./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi001_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/rfi001_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/rfi001_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/rfi001_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 19:13:04,132 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-21 19:13:04,209 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-21 19:13:04,215 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-21 19:13:04,216 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-21 19:13:04,247 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-21 19:13:04,247 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-21 19:13:04,266 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-21 19:13:04,267 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-21 19:13:04,270 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-21 19:13:04,271 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-21 19:13:04,271 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-21 19:13:04,272 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-21 19:13:04,273 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-21 19:13:04,273 INFO L153 SettingsManager]: * Use SBE=true [2024-06-21 19:13:04,274 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-21 19:13:04,274 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-21 19:13:04,274 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-21 19:13:04,274 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-21 19:13:04,275 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-21 19:13:04,275 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-21 19:13:04,275 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-21 19:13:04,276 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-21 19:13:04,276 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-21 19:13:04,276 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-21 19:13:04,276 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-21 19:13:04,277 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-21 19:13:04,277 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-21 19:13:04,277 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-21 19:13:04,278 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-21 19:13:04,279 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-21 19:13:04,279 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-21 19:13:04,279 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 19:13:04,279 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-21 19:13:04,279 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-21 19:13:04,280 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-21 19:13:04,280 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-21 19:13:04,280 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-21 19:13:04,280 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-21 19:13:04,281 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-21 19:13:04,281 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-21 19:13:04,281 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-21 19:13:04,281 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-21 19:13:04,281 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-21 19:13:04,564 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-21 19:13:04,592 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-21 19:13:04,594 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-21 19:13:04,595 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-21 19:13:04,596 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-21 19:13:04,597 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/rfi001_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.yml/witness.yml [2024-06-21 19:13:04,742 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-21 19:13:04,742 INFO L274 PluginConnector]: CDTParser initialized [2024-06-21 19:13:04,742 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi001_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-21 19:13:05,821 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-21 19:13:06,082 INFO L384 CDTParser]: Found 1 translation units. [2024-06-21 19:13:06,083 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi001_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-21 19:13:06,095 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/acfe38b64/abc1de9bb4004035bf3cb8376d69a322/FLAGadcfe1fd9 [2024-06-21 19:13:06,106 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/acfe38b64/abc1de9bb4004035bf3cb8376d69a322 [2024-06-21 19:13:06,106 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-21 19:13:06,108 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-21 19:13:06,109 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-21 19:13:06,109 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-21 19:13:06,113 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-21 19:13:06,114 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 07:13:04" (1/2) ... [2024-06-21 19:13:06,115 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a2e7753 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:13:06, skipping insertion in model container [2024-06-21 19:13:06,115 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 07:13:04" (1/2) ... [2024-06-21 19:13:06,116 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@747c2512 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:13:06, skipping insertion in model container [2024-06-21 19:13:06,116 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 07:13:06" (2/2) ... [2024-06-21 19:13:06,117 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a2e7753 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:13:06, skipping insertion in model container [2024-06-21 19:13:06,117 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 07:13:06" (2/2) ... [2024-06-21 19:13:06,117 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-21 19:13:06,137 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-21 19:13:06,139 INFO L97 edCorrectnessWitness]: Location invariant before [L805-L805] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EAX) + (long long )z >= 0LL && (0LL - (long long )__unbuffered_p1_EBX) + (long long )x >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )z >= 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 )y) + (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )y) + (long long )y$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 )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )x >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$w_buff1_used >= 0LL) && (long long )y$r_buff1_thd2 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0_used - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff1 - (long long )y$w_buff1_used >= 0LL) [2024-06-21 19:13:06,139 INFO L97 edCorrectnessWitness]: Location invariant before [L806-L806] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EAX) + (long long )z >= 0LL && (0LL - (long long )__unbuffered_p1_EBX) + (long long )x >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )z >= 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 )y) + (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )y) + (long long )y$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 )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )x >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$w_buff1_used >= 0LL) && (long long )y$r_buff1_thd2 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0_used - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff1 - (long long )y$w_buff1_used >= 0LL) [2024-06-21 19:13:06,139 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-21 19:13:06,139 INFO L106 edCorrectnessWitness]: ghost_update [L803-L803] multithreaded = 1; [2024-06-21 19:13:06,183 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-21 19:13:06,577 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 19:13:06,589 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-21 19:13:06,731 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 19:13:06,766 INFO L206 MainTranslator]: Completed translation [2024-06-21 19:13:06,767 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:13:06 WrapperNode [2024-06-21 19:13:06,767 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-21 19:13:06,768 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-21 19:13:06,768 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-21 19:13:06,768 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-21 19:13:06,774 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:13:06" (1/1) ... [2024-06-21 19:13:06,789 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:13:06" (1/1) ... [2024-06-21 19:13:06,836 INFO L138 Inliner]: procedures = 174, calls = 38, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 139 [2024-06-21 19:13:06,836 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-21 19:13:06,837 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-21 19:13:06,837 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-21 19:13:06,837 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-21 19:13:06,847 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:13:06" (1/1) ... [2024-06-21 19:13:06,859 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:13:06" (1/1) ... [2024-06-21 19:13:06,863 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:13:06" (1/1) ... [2024-06-21 19:13:06,879 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 19:13:06,879 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:13:06" (1/1) ... [2024-06-21 19:13:06,879 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:13:06" (1/1) ... [2024-06-21 19:13:06,888 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:13:06" (1/1) ... [2024-06-21 19:13:06,890 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:13:06" (1/1) ... [2024-06-21 19:13:06,893 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:13:06" (1/1) ... [2024-06-21 19:13:06,894 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:13:06" (1/1) ... [2024-06-21 19:13:06,899 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-21 19:13:06,899 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-21 19:13:06,900 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-21 19:13:06,900 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-21 19:13:06,900 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:13:06" (1/1) ... [2024-06-21 19:13:06,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 19:13:06,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-21 19:13:06,937 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 19:13:06,961 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 19:13:06,980 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-21 19:13:06,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-21 19:13:06,981 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-21 19:13:06,981 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-21 19:13:06,981 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-21 19:13:06,982 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-21 19:13:06,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-21 19:13:06,982 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-21 19:13:06,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-21 19:13:06,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-21 19:13:06,984 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 19:13:07,129 INFO L244 CfgBuilder]: Building ICFG [2024-06-21 19:13:07,131 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-21 19:13:07,500 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-21 19:13:07,502 INFO L293 CfgBuilder]: Performing block encoding [2024-06-21 19:13:07,699 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-21 19:13:07,699 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-21 19:13:07,701 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 07:13:07 BoogieIcfgContainer [2024-06-21 19:13:07,701 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-21 19:13:07,703 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-21 19:13:07,703 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-21 19:13:07,706 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-21 19:13:07,706 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 07:13:04" (1/4) ... [2024-06-21 19:13:07,707 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7665cce5 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 21.06 07:13:07, skipping insertion in model container [2024-06-21 19:13:07,707 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.06 07:13:06" (2/4) ... [2024-06-21 19:13:07,708 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7665cce5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 07:13:07, skipping insertion in model container [2024-06-21 19:13:07,708 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:13:06" (3/4) ... [2024-06-21 19:13:07,710 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7665cce5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 07:13:07, skipping insertion in model container [2024-06-21 19:13:07,710 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 07:13:07" (4/4) ... [2024-06-21 19:13:07,711 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi001_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-21 19:13:07,727 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-21 19:13:07,727 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-21 19:13:07,727 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-21 19:13:07,774 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-21 19:13:07,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 31 transitions, 70 flow [2024-06-21 19:13:07,844 INFO L124 PetriNetUnfolderBase]: 0/29 cut-off events. [2024-06-21 19:13:07,848 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 19:13:07,850 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 19:13:07,850 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 31 transitions, 70 flow [2024-06-21 19:13:07,854 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 23 transitions, 52 flow [2024-06-21 19:13:07,869 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-21 19:13:07,877 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;@3ddd5ade, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-21 19:13:07,877 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-21 19:13:07,882 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-21 19:13:07,882 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-21 19:13:07,882 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 19:13:07,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:13:07,883 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-21 19:13:07,883 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 19:13:07,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:13:07,911 INFO L85 PathProgramCache]: Analyzing trace with hash 330507394, now seen corresponding path program 1 times [2024-06-21 19:13:07,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:13:07,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081176007] [2024-06-21 19:13:07,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:13:07,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:13:08,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:13:09,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:13:09,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:13:09,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081176007] [2024-06-21 19:13:09,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081176007] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:13:09,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:13:09,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-21 19:13:09,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661156139] [2024-06-21 19:13:09,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:13:09,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-21 19:13:09,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:13:09,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-21 19:13:09,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-21 19:13:09,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-21 19:13:09,499 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 19:13:09,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:13:09,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-21 19:13:09,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:13:09,644 INFO L124 PetriNetUnfolderBase]: 162/316 cut-off events. [2024-06-21 19:13:09,644 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-21 19:13:09,647 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 19:13:09,650 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 21 selfloop transitions, 3 changer transitions 0/29 dead transitions. [2024-06-21 19:13:09,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 29 transitions, 115 flow [2024-06-21 19:13:09,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-21 19:13:09,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-21 19:13:09,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 53 transitions. [2024-06-21 19:13:09,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5698924731182796 [2024-06-21 19:13:09,664 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 52 flow. Second operand 3 states and 53 transitions. [2024-06-21 19:13:09,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 29 transitions, 115 flow [2024-06-21 19:13:09,666 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 19:13:09,669 INFO L231 Difference]: Finished difference. Result has 31 places, 25 transitions, 71 flow [2024-06-21 19:13:09,671 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 19:13:09,674 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2024-06-21 19:13:09,674 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 71 flow [2024-06-21 19:13:09,674 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 19:13:09,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:13:09,675 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:13:09,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-21 19:13:09,675 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 19:13:09,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:13:09,676 INFO L85 PathProgramCache]: Analyzing trace with hash -209632469, now seen corresponding path program 1 times [2024-06-21 19:13:09,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:13:09,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419090547] [2024-06-21 19:13:09,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:13:09,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:13:09,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:13:10,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:13:10,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:13:10,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419090547] [2024-06-21 19:13:10,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419090547] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:13:10,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:13:10,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-21 19:13:10,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644018928] [2024-06-21 19:13:10,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:13:10,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-21 19:13:10,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:13:10,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-21 19:13:10,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-21 19:13:10,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-21 19:13:10,848 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 19:13:10,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:13:10,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-21 19:13:10,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:13:10,980 INFO L124 PetriNetUnfolderBase]: 186/348 cut-off events. [2024-06-21 19:13:10,980 INFO L125 PetriNetUnfolderBase]: For 67/67 co-relation queries the response was YES. [2024-06-21 19:13:10,984 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 19:13:10,987 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 26 selfloop transitions, 5 changer transitions 0/35 dead transitions. [2024-06-21 19:13:10,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 35 transitions, 159 flow [2024-06-21 19:13:10,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-21 19:13:10,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-21 19:13:10,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 65 transitions. [2024-06-21 19:13:10,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5241935483870968 [2024-06-21 19:13:10,991 INFO L175 Difference]: Start difference. First operand has 31 places, 25 transitions, 71 flow. Second operand 4 states and 65 transitions. [2024-06-21 19:13:10,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 35 transitions, 159 flow [2024-06-21 19:13:10,994 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 19:13:10,996 INFO L231 Difference]: Finished difference. Result has 34 places, 27 transitions, 95 flow [2024-06-21 19:13:10,996 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 19:13:10,997 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 4 predicate places. [2024-06-21 19:13:10,997 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 27 transitions, 95 flow [2024-06-21 19:13:10,997 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 19:13:10,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:13:10,997 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:13:10,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-21 19:13:10,998 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 19:13:10,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:13:11,001 INFO L85 PathProgramCache]: Analyzing trace with hash 2091328885, now seen corresponding path program 1 times [2024-06-21 19:13:11,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:13:11,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750541700] [2024-06-21 19:13:11,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:13:11,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:13:11,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:13:12,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:13:12,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:13:12,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750541700] [2024-06-21 19:13:12,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750541700] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:13:12,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:13:12,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 19:13:12,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154172106] [2024-06-21 19:13:12,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:13:12,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 19:13:12,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:13:12,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 19:13:12,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-21 19:13:12,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-21 19:13:12,288 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 19:13:12,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:13:12,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-21 19:13:12,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:13:12,390 INFO L124 PetriNetUnfolderBase]: 180/340 cut-off events. [2024-06-21 19:13:12,391 INFO L125 PetriNetUnfolderBase]: For 195/195 co-relation queries the response was YES. [2024-06-21 19:13:12,392 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 19:13:12,393 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 31 selfloop transitions, 7 changer transitions 0/42 dead transitions. [2024-06-21 19:13:12,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 42 transitions, 211 flow [2024-06-21 19:13:12,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 19:13:12,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 19:13:12,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 80 transitions. [2024-06-21 19:13:12,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5161290322580645 [2024-06-21 19:13:12,395 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 95 flow. Second operand 5 states and 80 transitions. [2024-06-21 19:13:12,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 42 transitions, 211 flow [2024-06-21 19:13:12,396 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 19:13:12,397 INFO L231 Difference]: Finished difference. Result has 37 places, 29 transitions, 119 flow [2024-06-21 19:13:12,398 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 19:13:12,398 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 7 predicate places. [2024-06-21 19:13:12,398 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 29 transitions, 119 flow [2024-06-21 19:13:12,399 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 19:13:12,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:13:12,399 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:13:12,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-21 19:13:12,399 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 19:13:12,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:13:12,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1135293634, now seen corresponding path program 1 times [2024-06-21 19:13:12,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:13:12,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655189029] [2024-06-21 19:13:12,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:13:12,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:13:12,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:13:14,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:13:14,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:13:14,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655189029] [2024-06-21 19:13:14,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655189029] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:13:14,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:13:14,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:13:14,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482843565] [2024-06-21 19:13:14,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:13:14,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:13:14,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:13:14,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:13:14,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:13:14,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-21 19:13:14,668 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 19:13:14,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:13:14,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-21 19:13:14,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:13:14,859 INFO L124 PetriNetUnfolderBase]: 176/330 cut-off events. [2024-06-21 19:13:14,860 INFO L125 PetriNetUnfolderBase]: For 314/314 co-relation queries the response was YES. [2024-06-21 19:13:14,860 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 19:13:14,863 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 31 selfloop transitions, 8 changer transitions 0/43 dead transitions. [2024-06-21 19:13:14,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 43 transitions, 225 flow [2024-06-21 19:13:14,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 19:13:14,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 19:13:14,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 89 transitions. [2024-06-21 19:13:14,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.478494623655914 [2024-06-21 19:13:14,869 INFO L175 Difference]: Start difference. First operand has 37 places, 29 transitions, 119 flow. Second operand 6 states and 89 transitions. [2024-06-21 19:13:14,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 43 transitions, 225 flow [2024-06-21 19:13:14,871 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 19:13:14,872 INFO L231 Difference]: Finished difference. Result has 39 places, 28 transitions, 116 flow [2024-06-21 19:13:14,872 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 19:13:14,873 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 9 predicate places. [2024-06-21 19:13:14,874 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 28 transitions, 116 flow [2024-06-21 19:13:14,874 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 19:13:14,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:13:14,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:13:14,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-21 19:13:14,875 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 19:13:14,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:13:14,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1523058016, now seen corresponding path program 1 times [2024-06-21 19:13:14,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:13:14,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803304387] [2024-06-21 19:13:14,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:13:14,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:13:14,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:13:15,863 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 19:13:15,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:13:15,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803304387] [2024-06-21 19:13:15,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803304387] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:13:15,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:13:15,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 19:13:15,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053022719] [2024-06-21 19:13:15,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:13:15,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 19:13:15,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:13:15,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 19:13:15,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-21 19:13:15,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:13:15,909 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 19:13:15,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:13:15,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:13:15,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:13:16,084 INFO L124 PetriNetUnfolderBase]: 174/327 cut-off events. [2024-06-21 19:13:16,085 INFO L125 PetriNetUnfolderBase]: For 479/479 co-relation queries the response was YES. [2024-06-21 19:13:16,086 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 19:13:16,087 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 25 selfloop transitions, 8 changer transitions 0/36 dead transitions. [2024-06-21 19:13:16,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 36 transitions, 208 flow [2024-06-21 19:13:16,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 19:13:16,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 19:13:16,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 66 transitions. [2024-06-21 19:13:16,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-21 19:13:16,089 INFO L175 Difference]: Start difference. First operand has 39 places, 28 transitions, 116 flow. Second operand 6 states and 66 transitions. [2024-06-21 19:13:16,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 36 transitions, 208 flow [2024-06-21 19:13:16,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 36 transitions, 186 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-21 19:13:16,095 INFO L231 Difference]: Finished difference. Result has 42 places, 32 transitions, 140 flow [2024-06-21 19:13:16,096 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=6, PETRI_FLOW=140, PETRI_PLACES=42, PETRI_TRANSITIONS=32} [2024-06-21 19:13:16,100 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 12 predicate places. [2024-06-21 19:13:16,101 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 32 transitions, 140 flow [2024-06-21 19:13:16,101 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 19:13:16,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:13:16,101 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:13:16,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-21 19:13:16,103 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 19:13:16,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:13:16,103 INFO L85 PathProgramCache]: Analyzing trace with hash -542382381, now seen corresponding path program 1 times [2024-06-21 19:13:16,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:13:16,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319960132] [2024-06-21 19:13:16,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:13:16,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:13:16,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:13:16,994 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 19:13:16,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:13:16,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319960132] [2024-06-21 19:13:16,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319960132] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:13:16,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:13:16,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 19:13:16,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847579532] [2024-06-21 19:13:16,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:13:16,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 19:13:16,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:13:16,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 19:13:16,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-21 19:13:17,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:13:17,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 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 19:13:17,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:13:17,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:13:17,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:13:17,290 INFO L124 PetriNetUnfolderBase]: 181/340 cut-off events. [2024-06-21 19:13:17,291 INFO L125 PetriNetUnfolderBase]: For 629/629 co-relation queries the response was YES. [2024-06-21 19:13:17,293 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 1233 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 19:13:17,295 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 31 selfloop transitions, 12 changer transitions 0/46 dead transitions. [2024-06-21 19:13:17,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 46 transitions, 272 flow [2024-06-21 19:13:17,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 19:13:17,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 19:13:17,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 81 transitions. [2024-06-21 19:13:17,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37327188940092165 [2024-06-21 19:13:17,297 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 140 flow. Second operand 7 states and 81 transitions. [2024-06-21 19:13:17,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 46 transitions, 272 flow [2024-06-21 19:13:17,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 46 transitions, 259 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-21 19:13:17,300 INFO L231 Difference]: Finished difference. Result has 47 places, 37 transitions, 189 flow [2024-06-21 19:13:17,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=189, PETRI_PLACES=47, PETRI_TRANSITIONS=37} [2024-06-21 19:13:17,302 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 17 predicate places. [2024-06-21 19:13:17,303 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 37 transitions, 189 flow [2024-06-21 19:13:17,303 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 19:13:17,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:13:17,303 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:13:17,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-21 19:13:17,304 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 19:13:17,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:13:17,304 INFO L85 PathProgramCache]: Analyzing trace with hash 926712741, now seen corresponding path program 2 times [2024-06-21 19:13:17,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:13:17,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870115374] [2024-06-21 19:13:17,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:13:17,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:13:17,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:13:18,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:13:18,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:13:18,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870115374] [2024-06-21 19:13:18,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870115374] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:13:18,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:13:18,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 19:13:18,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383261193] [2024-06-21 19:13:18,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:13:18,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 19:13:18,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:13:18,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 19:13:18,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-21 19:13:18,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:13:18,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 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 19:13:18,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:13:18,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:13:18,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:13:18,443 INFO L124 PetriNetUnfolderBase]: 184/345 cut-off events. [2024-06-21 19:13:18,443 INFO L125 PetriNetUnfolderBase]: For 928/928 co-relation queries the response was YES. [2024-06-21 19:13:18,444 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 19:13:18,446 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 30 selfloop transitions, 13 changer transitions 0/46 dead transitions. [2024-06-21 19:13:18,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 46 transitions, 312 flow [2024-06-21 19:13:18,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 19:13:18,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 19:13:18,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2024-06-21 19:13:18,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35944700460829493 [2024-06-21 19:13:18,448 INFO L175 Difference]: Start difference. First operand has 47 places, 37 transitions, 189 flow. Second operand 7 states and 78 transitions. [2024-06-21 19:13:18,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 46 transitions, 312 flow [2024-06-21 19:13:18,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 46 transitions, 285 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-21 19:13:18,451 INFO L231 Difference]: Finished difference. Result has 50 places, 40 transitions, 218 flow [2024-06-21 19:13:18,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=164, 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=7, PETRI_FLOW=218, PETRI_PLACES=50, PETRI_TRANSITIONS=40} [2024-06-21 19:13:18,452 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 20 predicate places. [2024-06-21 19:13:18,452 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 40 transitions, 218 flow [2024-06-21 19:13:18,453 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 19:13:18,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:13:18,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:13:18,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-21 19:13:18,453 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 19:13:18,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:13:18,454 INFO L85 PathProgramCache]: Analyzing trace with hash 925132671, now seen corresponding path program 3 times [2024-06-21 19:13:18,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:13:18,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698992578] [2024-06-21 19:13:18,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:13:18,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:13:18,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:13:19,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:13:19,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:13:19,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698992578] [2024-06-21 19:13:19,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698992578] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:13:19,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:13:19,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 19:13:19,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622455327] [2024-06-21 19:13:19,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:13:19,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 19:13:19,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:13:19,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 19:13:19,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-21 19:13:19,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:13:19,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 40 transitions, 218 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 19:13:19,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:13:19,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:13:19,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:13:19,704 INFO L124 PetriNetUnfolderBase]: 182/342 cut-off events. [2024-06-21 19:13:19,704 INFO L125 PetriNetUnfolderBase]: For 1225/1225 co-relation queries the response was YES. [2024-06-21 19:13:19,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1197 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 1239 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 19:13:19,707 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 26 selfloop transitions, 18 changer transitions 0/47 dead transitions. [2024-06-21 19:13:19,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 47 transitions, 334 flow [2024-06-21 19:13:19,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 19:13:19,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 19:13:19,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2024-06-21 19:13:19,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35944700460829493 [2024-06-21 19:13:19,708 INFO L175 Difference]: Start difference. First operand has 50 places, 40 transitions, 218 flow. Second operand 7 states and 78 transitions. [2024-06-21 19:13:19,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 47 transitions, 334 flow [2024-06-21 19:13:19,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 47 transitions, 310 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-21 19:13:19,711 INFO L231 Difference]: Finished difference. Result has 54 places, 42 transitions, 255 flow [2024-06-21 19:13:19,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=194, 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=7, PETRI_FLOW=255, PETRI_PLACES=54, PETRI_TRANSITIONS=42} [2024-06-21 19:13:19,712 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 24 predicate places. [2024-06-21 19:13:19,712 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 42 transitions, 255 flow [2024-06-21 19:13:19,712 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 19:13:19,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:13:19,713 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:13:19,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-21 19:13:19,713 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 19:13:19,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:13:19,714 INFO L85 PathProgramCache]: Analyzing trace with hash 925140607, now seen corresponding path program 1 times [2024-06-21 19:13:19,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:13:19,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878406430] [2024-06-21 19:13:19,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:13:19,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:13:19,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:13:20,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:13:20,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:13:20,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878406430] [2024-06-21 19:13:20,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878406430] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:13:20,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:13:20,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:13:20,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595495052] [2024-06-21 19:13:20,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:13:20,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:13:20,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:13:20,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:13:20,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:13:21,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:13:21,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 42 transitions, 255 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 19:13:21,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:13:21,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:13:21,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:13:21,163 INFO L124 PetriNetUnfolderBase]: 182/349 cut-off events. [2024-06-21 19:13:21,163 INFO L125 PetriNetUnfolderBase]: For 1367/1367 co-relation queries the response was YES. [2024-06-21 19:13:21,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1256 conditions, 349 events. 182/349 cut-off events. For 1367/1367 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1252 event pairs, 100 based on Foata normal form. 1/350 useless extension candidates. Maximal degree in co-relation 1231. Up to 313 conditions per place. [2024-06-21 19:13:21,166 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 37 selfloop transitions, 12 changer transitions 0/52 dead transitions. [2024-06-21 19:13:21,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 52 transitions, 384 flow [2024-06-21 19:13:21,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 19:13:21,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 19:13:21,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2024-06-21 19:13:21,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35944700460829493 [2024-06-21 19:13:21,167 INFO L175 Difference]: Start difference. First operand has 54 places, 42 transitions, 255 flow. Second operand 7 states and 78 transitions. [2024-06-21 19:13:21,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 52 transitions, 384 flow [2024-06-21 19:13:21,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 52 transitions, 338 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-21 19:13:21,173 INFO L231 Difference]: Finished difference. Result has 57 places, 46 transitions, 264 flow [2024-06-21 19:13:21,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=210, 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=264, PETRI_PLACES=57, PETRI_TRANSITIONS=46} [2024-06-21 19:13:21,174 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 27 predicate places. [2024-06-21 19:13:21,174 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 46 transitions, 264 flow [2024-06-21 19:13:21,174 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 19:13:21,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:13:21,174 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:13:21,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-21 19:13:21,175 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 19:13:21,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:13:21,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1399700031, now seen corresponding path program 1 times [2024-06-21 19:13:21,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:13:21,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410954356] [2024-06-21 19:13:21,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:13:21,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:13:21,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:13:22,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:13:22,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:13:22,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410954356] [2024-06-21 19:13:22,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410954356] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:13:22,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:13:22,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:13:22,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836803018] [2024-06-21 19:13:22,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:13:22,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:13:22,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:13:22,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:13:22,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:13:22,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:13:22,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 46 transitions, 264 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 19:13:22,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:13:22,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:13:22,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:13:22,293 INFO L124 PetriNetUnfolderBase]: 190/361 cut-off events. [2024-06-21 19:13:22,293 INFO L125 PetriNetUnfolderBase]: For 1704/1704 co-relation queries the response was YES. [2024-06-21 19:13:22,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1362 conditions, 361 events. 190/361 cut-off events. For 1704/1704 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1318 event pairs, 47 based on Foata normal form. 1/362 useless extension candidates. Maximal degree in co-relation 1335. Up to 292 conditions per place. [2024-06-21 19:13:22,296 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 44 selfloop transitions, 18 changer transitions 0/66 dead transitions. [2024-06-21 19:13:22,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 66 transitions, 456 flow [2024-06-21 19:13:22,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 19:13:22,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 19:13:22,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 88 transitions. [2024-06-21 19:13:22,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4055299539170507 [2024-06-21 19:13:22,298 INFO L175 Difference]: Start difference. First operand has 57 places, 46 transitions, 264 flow. Second operand 7 states and 88 transitions. [2024-06-21 19:13:22,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 66 transitions, 456 flow [2024-06-21 19:13:22,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 66 transitions, 433 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-21 19:13:22,302 INFO L231 Difference]: Finished difference. Result has 61 places, 53 transitions, 324 flow [2024-06-21 19:13:22,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=241, 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=324, PETRI_PLACES=61, PETRI_TRANSITIONS=53} [2024-06-21 19:13:22,302 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 31 predicate places. [2024-06-21 19:13:22,302 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 53 transitions, 324 flow [2024-06-21 19:13:22,303 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 19:13:22,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:13:22,303 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:13:22,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-21 19:13:22,303 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 19:13:22,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:13:22,304 INFO L85 PathProgramCache]: Analyzing trace with hash 906233859, now seen corresponding path program 2 times [2024-06-21 19:13:22,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:13:22,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150847526] [2024-06-21 19:13:22,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:13:22,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:13:22,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:13:23,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:13:23,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:13:23,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150847526] [2024-06-21 19:13:23,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150847526] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:13:23,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:13:23,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:13:23,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498059399] [2024-06-21 19:13:23,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:13:23,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:13:23,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:13:23,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:13:23,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:13:23,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:13:23,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 53 transitions, 324 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 19:13:23,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:13:23,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:13:23,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:13:23,507 INFO L124 PetriNetUnfolderBase]: 198/377 cut-off events. [2024-06-21 19:13:23,508 INFO L125 PetriNetUnfolderBase]: For 2094/2094 co-relation queries the response was YES. [2024-06-21 19:13:23,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1528 conditions, 377 events. 198/377 cut-off events. For 2094/2094 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1409 event pairs, 44 based on Foata normal form. 1/378 useless extension candidates. Maximal degree in co-relation 1500. Up to 301 conditions per place. [2024-06-21 19:13:23,511 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 46 selfloop transitions, 21 changer transitions 0/71 dead transitions. [2024-06-21 19:13:23,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 71 transitions, 538 flow [2024-06-21 19:13:23,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:13:23,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:13:23,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 95 transitions. [2024-06-21 19:13:23,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38306451612903225 [2024-06-21 19:13:23,512 INFO L175 Difference]: Start difference. First operand has 61 places, 53 transitions, 324 flow. Second operand 8 states and 95 transitions. [2024-06-21 19:13:23,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 71 transitions, 538 flow [2024-06-21 19:13:23,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 71 transitions, 522 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-06-21 19:13:23,516 INFO L231 Difference]: Finished difference. Result has 70 places, 60 transitions, 425 flow [2024-06-21 19:13:23,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=425, PETRI_PLACES=70, PETRI_TRANSITIONS=60} [2024-06-21 19:13:23,517 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 40 predicate places. [2024-06-21 19:13:23,517 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 60 transitions, 425 flow [2024-06-21 19:13:23,517 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 19:13:23,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:13:23,518 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:13:23,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-21 19:13:23,518 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 19:13:23,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:13:23,519 INFO L85 PathProgramCache]: Analyzing trace with hash 899088669, now seen corresponding path program 3 times [2024-06-21 19:13:23,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:13:23,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078050925] [2024-06-21 19:13:23,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:13:23,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:13:23,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:13:24,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:13:24,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:13:24,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078050925] [2024-06-21 19:13:24,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078050925] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:13:24,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:13:24,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:13:24,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736077307] [2024-06-21 19:13:24,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:13:24,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:13:24,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:13:24,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:13:24,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:13:24,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:13:24,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 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 19:13:24,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:13:24,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:13:24,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:13:24,732 INFO L124 PetriNetUnfolderBase]: 206/394 cut-off events. [2024-06-21 19:13:24,732 INFO L125 PetriNetUnfolderBase]: For 2755/2755 co-relation queries the response was YES. [2024-06-21 19:13:24,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1739 conditions, 394 events. 206/394 cut-off events. For 2755/2755 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1516 event pairs, 45 based on Foata normal form. 1/395 useless extension candidates. Maximal degree in co-relation 1706. Up to 295 conditions per place. [2024-06-21 19:13:24,736 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 47 selfloop transitions, 24 changer transitions 0/75 dead transitions. [2024-06-21 19:13:24,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 75 transitions, 655 flow [2024-06-21 19:13:24,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 19:13:24,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 19:13:24,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 91 transitions. [2024-06-21 19:13:24,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-21 19:13:24,737 INFO L175 Difference]: Start difference. First operand has 70 places, 60 transitions, 425 flow. Second operand 7 states and 91 transitions. [2024-06-21 19:13:24,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 75 transitions, 655 flow [2024-06-21 19:13:24,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 75 transitions, 621 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-21 19:13:24,744 INFO L231 Difference]: Finished difference. Result has 75 places, 64 transitions, 499 flow [2024-06-21 19:13:24,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=499, PETRI_PLACES=75, PETRI_TRANSITIONS=64} [2024-06-21 19:13:24,744 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 45 predicate places. [2024-06-21 19:13:24,745 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 64 transitions, 499 flow [2024-06-21 19:13:24,745 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 19:13:24,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:13:24,745 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:13:24,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-21 19:13:24,745 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 19:13:24,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:13:24,746 INFO L85 PathProgramCache]: Analyzing trace with hash 10495419, now seen corresponding path program 4 times [2024-06-21 19:13:24,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:13:24,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674754477] [2024-06-21 19:13:24,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:13:24,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:13:24,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:13:25,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:13:25,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:13:25,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674754477] [2024-06-21 19:13:25,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674754477] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:13:25,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:13:25,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:13:25,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801162322] [2024-06-21 19:13:25,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:13:25,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:13:25,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:13:25,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:13:25,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:13:25,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:13:25,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 64 transitions, 499 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 19:13:25,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:13:25,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:13:25,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:13:25,943 INFO L124 PetriNetUnfolderBase]: 209/399 cut-off events. [2024-06-21 19:13:25,943 INFO L125 PetriNetUnfolderBase]: For 3480/3488 co-relation queries the response was YES. [2024-06-21 19:13:25,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1878 conditions, 399 events. 209/399 cut-off events. For 3480/3488 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1538 event pairs, 49 based on Foata normal form. 3/402 useless extension candidates. Maximal degree in co-relation 1844. Up to 319 conditions per place. [2024-06-21 19:13:25,947 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 50 selfloop transitions, 22 changer transitions 0/76 dead transitions. [2024-06-21 19:13:25,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 76 transitions, 708 flow [2024-06-21 19:13:25,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 19:13:25,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 19:13:25,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 87 transitions. [2024-06-21 19:13:25,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4009216589861751 [2024-06-21 19:13:25,949 INFO L175 Difference]: Start difference. First operand has 75 places, 64 transitions, 499 flow. Second operand 7 states and 87 transitions. [2024-06-21 19:13:25,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 76 transitions, 708 flow [2024-06-21 19:13:25,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 76 transitions, 670 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-21 19:13:25,955 INFO L231 Difference]: Finished difference. Result has 80 places, 68 transitions, 564 flow [2024-06-21 19:13:25,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=462, 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=564, PETRI_PLACES=80, PETRI_TRANSITIONS=68} [2024-06-21 19:13:25,956 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 50 predicate places. [2024-06-21 19:13:25,956 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 68 transitions, 564 flow [2024-06-21 19:13:25,957 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 19:13:25,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:13:25,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:13:25,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-21 19:13:25,957 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 19:13:25,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:13:25,958 INFO L85 PathProgramCache]: Analyzing trace with hash 10615389, now seen corresponding path program 5 times [2024-06-21 19:13:25,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:13:25,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653322091] [2024-06-21 19:13:25,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:13:25,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:13:25,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:13:26,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:13:26,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:13:26,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653322091] [2024-06-21 19:13:26,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653322091] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:13:26,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:13:26,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:13:26,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077175441] [2024-06-21 19:13:26,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:13:26,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:13:26,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:13:26,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:13:26,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:13:27,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:13:27,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 68 transitions, 564 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 19:13:27,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:13:27,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:13:27,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:13:27,324 INFO L124 PetriNetUnfolderBase]: 217/412 cut-off events. [2024-06-21 19:13:27,324 INFO L125 PetriNetUnfolderBase]: For 4102/4110 co-relation queries the response was YES. [2024-06-21 19:13:27,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2067 conditions, 412 events. 217/412 cut-off events. For 4102/4110 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1611 event pairs, 50 based on Foata normal form. 3/415 useless extension candidates. Maximal degree in co-relation 2028. Up to 318 conditions per place. [2024-06-21 19:13:27,328 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 51 selfloop transitions, 25 changer transitions 0/80 dead transitions. [2024-06-21 19:13:27,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 80 transitions, 814 flow [2024-06-21 19:13:27,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:13:27,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:13:27,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-21 19:13:27,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-21 19:13:27,329 INFO L175 Difference]: Start difference. First operand has 80 places, 68 transitions, 564 flow. Second operand 8 states and 96 transitions. [2024-06-21 19:13:27,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 80 transitions, 814 flow [2024-06-21 19:13:27,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 80 transitions, 768 flow, removed 11 selfloop flow, removed 2 redundant places. [2024-06-21 19:13:27,336 INFO L231 Difference]: Finished difference. Result has 87 places, 72 transitions, 640 flow [2024-06-21 19:13:27,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=518, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=640, PETRI_PLACES=87, PETRI_TRANSITIONS=72} [2024-06-21 19:13:27,337 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 57 predicate places. [2024-06-21 19:13:27,337 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 72 transitions, 640 flow [2024-06-21 19:13:27,337 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 19:13:27,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:13:27,337 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:13:27,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-21 19:13:27,337 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 19:13:27,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:13:27,338 INFO L85 PathProgramCache]: Analyzing trace with hash 333281333, now seen corresponding path program 6 times [2024-06-21 19:13:27,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:13:27,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666266461] [2024-06-21 19:13:27,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:13:27,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:13:27,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:13:28,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:13:28,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:13:28,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666266461] [2024-06-21 19:13:28,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666266461] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:13:28,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:13:28,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:13:28,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044729419] [2024-06-21 19:13:28,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:13:28,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:13:28,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:13:28,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:13:28,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:13:28,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:13:28,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 72 transitions, 640 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 19:13:28,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:13:28,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:13:28,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:13:28,762 INFO L124 PetriNetUnfolderBase]: 225/425 cut-off events. [2024-06-21 19:13:28,763 INFO L125 PetriNetUnfolderBase]: For 5027/5035 co-relation queries the response was YES. [2024-06-21 19:13:28,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2264 conditions, 425 events. 225/425 cut-off events. For 5027/5035 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1682 event pairs, 50 based on Foata normal form. 3/428 useless extension candidates. Maximal degree in co-relation 2221. Up to 308 conditions per place. [2024-06-21 19:13:28,766 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 41 selfloop transitions, 40 changer transitions 0/85 dead transitions. [2024-06-21 19:13:28,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 85 transitions, 932 flow [2024-06-21 19:13:28,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 19:13:28,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 19:13:28,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 88 transitions. [2024-06-21 19:13:28,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4055299539170507 [2024-06-21 19:13:28,768 INFO L175 Difference]: Start difference. First operand has 87 places, 72 transitions, 640 flow. Second operand 7 states and 88 transitions. [2024-06-21 19:13:28,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 85 transitions, 932 flow [2024-06-21 19:13:28,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 85 transitions, 881 flow, removed 16 selfloop flow, removed 3 redundant places. [2024-06-21 19:13:28,776 INFO L231 Difference]: Finished difference. Result has 92 places, 78 transitions, 799 flow [2024-06-21 19:13:28,776 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=593, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=799, PETRI_PLACES=92, PETRI_TRANSITIONS=78} [2024-06-21 19:13:28,776 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 62 predicate places. [2024-06-21 19:13:28,776 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 78 transitions, 799 flow [2024-06-21 19:13:28,777 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 19:13:28,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:13:28,784 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:13:28,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-21 19:13:28,785 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 19:13:28,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:13:28,786 INFO L85 PathProgramCache]: Analyzing trace with hash -322049008, now seen corresponding path program 1 times [2024-06-21 19:13:28,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:13:28,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052276908] [2024-06-21 19:13:28,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:13:28,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:13:28,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:13:29,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:13:29,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:13:29,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052276908] [2024-06-21 19:13:29,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052276908] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:13:29,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:13:29,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:13:29,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870274170] [2024-06-21 19:13:29,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:13:29,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:13:29,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:13:29,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:13:29,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:13:29,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-21 19:13:29,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 78 transitions, 799 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 19:13:29,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:13:29,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-21 19:13:29,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:13:29,968 INFO L124 PetriNetUnfolderBase]: 211/415 cut-off events. [2024-06-21 19:13:29,968 INFO L125 PetriNetUnfolderBase]: For 5747/5753 co-relation queries the response was YES. [2024-06-21 19:13:29,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2362 conditions, 415 events. 211/415 cut-off events. For 5747/5753 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1705 event pairs, 43 based on Foata normal form. 8/422 useless extension candidates. Maximal degree in co-relation 2316. Up to 312 conditions per place. [2024-06-21 19:13:29,972 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 50 selfloop transitions, 30 changer transitions 0/91 dead transitions. [2024-06-21 19:13:29,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 91 transitions, 1039 flow [2024-06-21 19:13:29,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 19:13:29,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 19:13:29,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 90 transitions. [2024-06-21 19:13:29,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147465437788018 [2024-06-21 19:13:29,973 INFO L175 Difference]: Start difference. First operand has 92 places, 78 transitions, 799 flow. Second operand 7 states and 90 transitions. [2024-06-21 19:13:29,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 91 transitions, 1039 flow [2024-06-21 19:13:29,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 91 transitions, 956 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-21 19:13:29,982 INFO L231 Difference]: Finished difference. Result has 95 places, 82 transitions, 850 flow [2024-06-21 19:13:29,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=721, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=850, PETRI_PLACES=95, PETRI_TRANSITIONS=82} [2024-06-21 19:13:29,983 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 65 predicate places. [2024-06-21 19:13:29,983 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 82 transitions, 850 flow [2024-06-21 19:13:29,983 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 19:13:29,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:13:29,984 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:13:29,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-21 19:13:29,984 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 19:13:29,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:13:29,984 INFO L85 PathProgramCache]: Analyzing trace with hash 865713304, now seen corresponding path program 2 times [2024-06-21 19:13:29,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:13:29,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764184653] [2024-06-21 19:13:29,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:13:29,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:13:30,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:13:31,172 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 19:13:31,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:13:31,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764184653] [2024-06-21 19:13:31,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764184653] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:13:31,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:13:31,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:13:31,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911502207] [2024-06-21 19:13:31,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:13:31,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:13:31,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:13:31,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:13:31,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:13:31,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:13:31,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 82 transitions, 850 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 19:13:31,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:13:31,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:13:31,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:13:31,550 INFO L124 PetriNetUnfolderBase]: 240/455 cut-off events. [2024-06-21 19:13:31,551 INFO L125 PetriNetUnfolderBase]: For 6758/6766 co-relation queries the response was YES. [2024-06-21 19:13:31,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2629 conditions, 455 events. 240/455 cut-off events. For 6758/6766 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1873 event pairs, 67 based on Foata normal form. 3/456 useless extension candidates. Maximal degree in co-relation 2582. Up to 358 conditions per place. [2024-06-21 19:13:31,555 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 65 selfloop transitions, 31 changer transitions 0/100 dead transitions. [2024-06-21 19:13:31,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 100 transitions, 1167 flow [2024-06-21 19:13:31,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:13:31,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:13:31,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-21 19:13:31,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-21 19:13:31,557 INFO L175 Difference]: Start difference. First operand has 95 places, 82 transitions, 850 flow. Second operand 8 states and 96 transitions. [2024-06-21 19:13:31,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 100 transitions, 1167 flow [2024-06-21 19:13:31,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 100 transitions, 1115 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-06-21 19:13:31,570 INFO L231 Difference]: Finished difference. Result has 100 places, 88 transitions, 973 flow [2024-06-21 19:13:31,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=810, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=973, PETRI_PLACES=100, PETRI_TRANSITIONS=88} [2024-06-21 19:13:31,571 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 70 predicate places. [2024-06-21 19:13:31,571 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 88 transitions, 973 flow [2024-06-21 19:13:31,571 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 19:13:31,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:13:31,571 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:13:31,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-21 19:13:31,572 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 19:13:31,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:13:31,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1771883120, now seen corresponding path program 3 times [2024-06-21 19:13:31,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:13:31,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015003417] [2024-06-21 19:13:31,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:13:31,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:13:31,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:13:32,772 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 19:13:32,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:13:32,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015003417] [2024-06-21 19:13:32,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015003417] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:13:32,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:13:32,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:13:32,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562693381] [2024-06-21 19:13:32,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:13:32,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:13:32,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:13:32,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:13:32,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:13:32,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:13:32,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 88 transitions, 973 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 19:13:32,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:13:32,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:13:32,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:13:33,170 INFO L124 PetriNetUnfolderBase]: 241/457 cut-off events. [2024-06-21 19:13:33,170 INFO L125 PetriNetUnfolderBase]: For 7043/7047 co-relation queries the response was YES. [2024-06-21 19:13:33,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2679 conditions, 457 events. 241/457 cut-off events. For 7043/7047 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1859 event pairs, 45 based on Foata normal form. 1/458 useless extension candidates. Maximal degree in co-relation 2631. Up to 363 conditions per place. [2024-06-21 19:13:33,175 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 70 selfloop transitions, 27 changer transitions 0/101 dead transitions. [2024-06-21 19:13:33,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 101 transitions, 1225 flow [2024-06-21 19:13:33,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 19:13:33,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 19:13:33,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 91 transitions. [2024-06-21 19:13:33,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-21 19:13:33,177 INFO L175 Difference]: Start difference. First operand has 100 places, 88 transitions, 973 flow. Second operand 7 states and 91 transitions. [2024-06-21 19:13:33,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 101 transitions, 1225 flow [2024-06-21 19:13:33,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 101 transitions, 1141 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-21 19:13:33,191 INFO L231 Difference]: Finished difference. Result has 101 places, 90 transitions, 984 flow [2024-06-21 19:13:33,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=889, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=984, PETRI_PLACES=101, PETRI_TRANSITIONS=90} [2024-06-21 19:13:33,192 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 71 predicate places. [2024-06-21 19:13:33,192 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 90 transitions, 984 flow [2024-06-21 19:13:33,193 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 19:13:33,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:13:33,193 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:13:33,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-21 19:13:33,193 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 19:13:33,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:13:33,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1971370058, now seen corresponding path program 1 times [2024-06-21 19:13:33,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:13:33,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602277763] [2024-06-21 19:13:33,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:13:33,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:13:33,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:13:34,235 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 19:13:34,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:13:34,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602277763] [2024-06-21 19:13:34,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602277763] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:13:34,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:13:34,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:13:34,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624794469] [2024-06-21 19:13:34,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:13:34,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:13:34,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:13:34,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:13:34,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:13:34,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:13:34,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 90 transitions, 984 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 19:13:34,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:13:34,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:13:34,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:13:34,497 INFO L124 PetriNetUnfolderBase]: 312/553 cut-off events. [2024-06-21 19:13:34,497 INFO L125 PetriNetUnfolderBase]: For 8382/8382 co-relation queries the response was YES. [2024-06-21 19:13:34,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3170 conditions, 553 events. 312/553 cut-off events. For 8382/8382 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2192 event pairs, 100 based on Foata normal form. 1/554 useless extension candidates. Maximal degree in co-relation 3123. Up to 520 conditions per place. [2024-06-21 19:13:34,503 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 86 selfloop transitions, 17 changer transitions 0/105 dead transitions. [2024-06-21 19:13:34,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 105 transitions, 1242 flow [2024-06-21 19:13:34,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:13:34,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:13:34,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 91 transitions. [2024-06-21 19:13:34,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32616487455197135 [2024-06-21 19:13:34,505 INFO L175 Difference]: Start difference. First operand has 101 places, 90 transitions, 984 flow. Second operand 9 states and 91 transitions. [2024-06-21 19:13:34,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 105 transitions, 1242 flow [2024-06-21 19:13:34,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 105 transitions, 1183 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-21 19:13:34,519 INFO L231 Difference]: Finished difference. Result has 107 places, 94 transitions, 997 flow [2024-06-21 19:13:34,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=925, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=997, PETRI_PLACES=107, PETRI_TRANSITIONS=94} [2024-06-21 19:13:34,520 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 77 predicate places. [2024-06-21 19:13:34,520 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 94 transitions, 997 flow [2024-06-21 19:13:34,520 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 19:13:34,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:13:34,520 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:13:34,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-21 19:13:34,521 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 19:13:34,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:13:34,521 INFO L85 PathProgramCache]: Analyzing trace with hash 541868910, now seen corresponding path program 4 times [2024-06-21 19:13:34,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:13:34,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251258959] [2024-06-21 19:13:34,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:13:34,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:13:34,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:13:35,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:13:35,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:13:35,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251258959] [2024-06-21 19:13:35,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251258959] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:13:35,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:13:35,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:13:35,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982699790] [2024-06-21 19:13:35,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:13:35,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:13:35,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:13:35,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:13:35,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:13:35,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:13:35,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 94 transitions, 997 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 19:13:35,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:13:35,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:13:35,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:13:36,075 INFO L124 PetriNetUnfolderBase]: 247/468 cut-off events. [2024-06-21 19:13:36,076 INFO L125 PetriNetUnfolderBase]: For 7965/7965 co-relation queries the response was YES. [2024-06-21 19:13:36,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2787 conditions, 468 events. 247/468 cut-off events. For 7965/7965 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1923 event pairs, 51 based on Foata normal form. 2/470 useless extension candidates. Maximal degree in co-relation 2737. Up to 372 conditions per place. [2024-06-21 19:13:36,081 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 71 selfloop transitions, 28 changer transitions 0/104 dead transitions. [2024-06-21 19:13:36,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 104 transitions, 1247 flow [2024-06-21 19:13:36,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:13:36,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:13:36,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-21 19:13:36,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3790322580645161 [2024-06-21 19:13:36,083 INFO L175 Difference]: Start difference. First operand has 107 places, 94 transitions, 997 flow. Second operand 8 states and 94 transitions. [2024-06-21 19:13:36,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 104 transitions, 1247 flow [2024-06-21 19:13:36,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 104 transitions, 1204 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-21 19:13:36,098 INFO L231 Difference]: Finished difference. Result has 109 places, 96 transitions, 1053 flow [2024-06-21 19:13:36,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=954, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1053, PETRI_PLACES=109, PETRI_TRANSITIONS=96} [2024-06-21 19:13:36,098 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 79 predicate places. [2024-06-21 19:13:36,099 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 96 transitions, 1053 flow [2024-06-21 19:13:36,101 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 19:13:36,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:13:36,101 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:13:36,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-21 19:13:36,101 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 19:13:36,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:13:36,102 INFO L85 PathProgramCache]: Analyzing trace with hash 329084294, now seen corresponding path program 2 times [2024-06-21 19:13:36,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:13:36,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101175534] [2024-06-21 19:13:36,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:13:36,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:13:36,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:13:37,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:13:37,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:13:37,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101175534] [2024-06-21 19:13:37,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101175534] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:13:37,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:13:37,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:13:37,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685192169] [2024-06-21 19:13:37,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:13:37,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:13:37,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:13:37,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:13:37,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:13:37,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:13:37,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 96 transitions, 1053 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 19:13:37,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:13:37,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:13:37,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:13:37,483 INFO L124 PetriNetUnfolderBase]: 317/562 cut-off events. [2024-06-21 19:13:37,483 INFO L125 PetriNetUnfolderBase]: For 9524/9524 co-relation queries the response was YES. [2024-06-21 19:13:37,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3340 conditions, 562 events. 317/562 cut-off events. For 9524/9524 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2249 event pairs, 97 based on Foata normal form. 1/563 useless extension candidates. Maximal degree in co-relation 3289. Up to 529 conditions per place. [2024-06-21 19:13:37,489 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 89 selfloop transitions, 17 changer transitions 0/108 dead transitions. [2024-06-21 19:13:37,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 108 transitions, 1315 flow [2024-06-21 19:13:37,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:13:37,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:13:37,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 83 transitions. [2024-06-21 19:13:37,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3346774193548387 [2024-06-21 19:13:37,491 INFO L175 Difference]: Start difference. First operand has 109 places, 96 transitions, 1053 flow. Second operand 8 states and 83 transitions. [2024-06-21 19:13:37,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 108 transitions, 1315 flow [2024-06-21 19:13:37,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 108 transitions, 1241 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-21 19:13:37,508 INFO L231 Difference]: Finished difference. Result has 112 places, 100 transitions, 1057 flow [2024-06-21 19:13:37,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=979, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1057, PETRI_PLACES=112, PETRI_TRANSITIONS=100} [2024-06-21 19:13:37,509 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 82 predicate places. [2024-06-21 19:13:37,509 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 100 transitions, 1057 flow [2024-06-21 19:13:37,509 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 19:13:37,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:13:37,510 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:13:37,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-21 19:13:37,510 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 19:13:37,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:13:37,510 INFO L85 PathProgramCache]: Analyzing trace with hash 545678190, now seen corresponding path program 5 times [2024-06-21 19:13:37,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:13:37,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697147483] [2024-06-21 19:13:37,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:13:37,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:13:37,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:13:38,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:13:38,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:13:38,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697147483] [2024-06-21 19:13:38,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697147483] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:13:38,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:13:38,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:13:38,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177063200] [2024-06-21 19:13:38,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:13:38,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:13:38,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:13:38,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:13:38,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:13:38,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:13:38,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 100 transitions, 1057 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 19:13:38,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:13:38,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:13:38,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:13:39,239 INFO L124 PetriNetUnfolderBase]: 250/474 cut-off events. [2024-06-21 19:13:39,239 INFO L125 PetriNetUnfolderBase]: For 8876/8884 co-relation queries the response was YES. [2024-06-21 19:13:39,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2898 conditions, 474 events. 250/474 cut-off events. For 8876/8884 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1955 event pairs, 51 based on Foata normal form. 3/477 useless extension candidates. Maximal degree in co-relation 2845. Up to 365 conditions per place. [2024-06-21 19:13:39,244 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 68 selfloop transitions, 33 changer transitions 0/107 dead transitions. [2024-06-21 19:13:39,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 107 transitions, 1277 flow [2024-06-21 19:13:39,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:13:39,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:13:39,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-21 19:13:39,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-21 19:13:39,245 INFO L175 Difference]: Start difference. First operand has 112 places, 100 transitions, 1057 flow. Second operand 8 states and 96 transitions. [2024-06-21 19:13:39,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 107 transitions, 1277 flow [2024-06-21 19:13:39,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 107 transitions, 1220 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-21 19:13:39,263 INFO L231 Difference]: Finished difference. Result has 115 places, 100 transitions, 1073 flow [2024-06-21 19:13:39,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1000, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1073, PETRI_PLACES=115, PETRI_TRANSITIONS=100} [2024-06-21 19:13:39,263 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 85 predicate places. [2024-06-21 19:13:39,264 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 100 transitions, 1073 flow [2024-06-21 19:13:39,264 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 19:13:39,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:13:39,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:13:39,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-21 19:13:39,264 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 19:13:39,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:13:39,265 INFO L85 PathProgramCache]: Analyzing trace with hash -5693346, now seen corresponding path program 6 times [2024-06-21 19:13:39,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:13:39,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927260503] [2024-06-21 19:13:39,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:13:39,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:13:39,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:13:40,708 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 19:13:40,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:13:40,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927260503] [2024-06-21 19:13:40,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927260503] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:13:40,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:13:40,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:13:40,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118285240] [2024-06-21 19:13:40,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:13:40,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:13:40,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:13:40,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:13:40,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:13:40,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:13:40,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 100 transitions, 1073 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 19:13:40,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:13:40,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:13:40,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:13:41,041 INFO L124 PetriNetUnfolderBase]: 248/472 cut-off events. [2024-06-21 19:13:41,041 INFO L125 PetriNetUnfolderBase]: For 9586/9594 co-relation queries the response was YES. [2024-06-21 19:13:41,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2904 conditions, 472 events. 248/472 cut-off events. For 9586/9594 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1960 event pairs, 57 based on Foata normal form. 9/481 useless extension candidates. Maximal degree in co-relation 2850. Up to 316 conditions per place. [2024-06-21 19:13:41,046 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 48 selfloop transitions, 54 changer transitions 0/108 dead transitions. [2024-06-21 19:13:41,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 108 transitions, 1321 flow [2024-06-21 19:13:41,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:13:41,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:13:41,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-21 19:13:41,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3790322580645161 [2024-06-21 19:13:41,048 INFO L175 Difference]: Start difference. First operand has 115 places, 100 transitions, 1073 flow. Second operand 8 states and 94 transitions. [2024-06-21 19:13:41,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 108 transitions, 1321 flow [2024-06-21 19:13:41,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 108 transitions, 1252 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-21 19:13:41,066 INFO L231 Difference]: Finished difference. Result has 117 places, 102 transitions, 1152 flow [2024-06-21 19:13:41,066 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1004, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1152, PETRI_PLACES=117, PETRI_TRANSITIONS=102} [2024-06-21 19:13:41,066 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 87 predicate places. [2024-06-21 19:13:41,066 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 102 transitions, 1152 flow [2024-06-21 19:13:41,067 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 19:13:41,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:13:41,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:13:41,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-21 19:13:41,067 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 19:13:41,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:13:41,068 INFO L85 PathProgramCache]: Analyzing trace with hash 689574672, now seen corresponding path program 3 times [2024-06-21 19:13:41,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:13:41,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296975373] [2024-06-21 19:13:41,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:13:41,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:13:41,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:13:42,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:13:42,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:13:42,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296975373] [2024-06-21 19:13:42,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296975373] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:13:42,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:13:42,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:13:42,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765443387] [2024-06-21 19:13:42,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:13:42,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:13:42,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:13:42,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:13:42,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:13:42,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:13:42,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 102 transitions, 1152 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 19:13:42,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:13:42,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:13:42,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:13:42,445 INFO L124 PetriNetUnfolderBase]: 315/560 cut-off events. [2024-06-21 19:13:42,445 INFO L125 PetriNetUnfolderBase]: For 11136/11136 co-relation queries the response was YES. [2024-06-21 19:13:42,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3472 conditions, 560 events. 315/560 cut-off events. For 11136/11136 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2241 event pairs, 96 based on Foata normal form. 1/561 useless extension candidates. Maximal degree in co-relation 3417. Up to 491 conditions per place. [2024-06-21 19:13:42,451 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 87 selfloop transitions, 30 changer transitions 0/119 dead transitions. [2024-06-21 19:13:42,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 119 transitions, 1523 flow [2024-06-21 19:13:42,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:13:42,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:13:42,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-21 19:13:42,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-21 19:13:42,453 INFO L175 Difference]: Start difference. First operand has 117 places, 102 transitions, 1152 flow. Second operand 8 states and 88 transitions. [2024-06-21 19:13:42,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 119 transitions, 1523 flow [2024-06-21 19:13:42,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 119 transitions, 1392 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-21 19:13:42,472 INFO L231 Difference]: Finished difference. Result has 122 places, 111 transitions, 1194 flow [2024-06-21 19:13:42,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1024, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1194, PETRI_PLACES=122, PETRI_TRANSITIONS=111} [2024-06-21 19:13:42,473 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 92 predicate places. [2024-06-21 19:13:42,473 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 111 transitions, 1194 flow [2024-06-21 19:13:42,473 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 19:13:42,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:13:42,474 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:13:42,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-21 19:13:42,474 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 19:13:42,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:13:42,474 INFO L85 PathProgramCache]: Analyzing trace with hash -5485584, now seen corresponding path program 4 times [2024-06-21 19:13:42,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:13:42,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789405574] [2024-06-21 19:13:42,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:13:42,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:13:42,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:13:43,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:13:43,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:13:43,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789405574] [2024-06-21 19:13:43,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789405574] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:13:43,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:13:43,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:13:43,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140562265] [2024-06-21 19:13:43,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:13:43,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:13:43,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:13:43,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:13:43,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:13:43,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:13:43,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 111 transitions, 1194 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 19:13:43,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:13:43,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:13:43,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:13:43,881 INFO L124 PetriNetUnfolderBase]: 318/565 cut-off events. [2024-06-21 19:13:43,881 INFO L125 PetriNetUnfolderBase]: For 11728/11728 co-relation queries the response was YES. [2024-06-21 19:13:43,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3558 conditions, 565 events. 318/565 cut-off events. For 11728/11728 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2253 event pairs, 92 based on Foata normal form. 1/566 useless extension candidates. Maximal degree in co-relation 3499. Up to 495 conditions per place. [2024-06-21 19:13:43,887 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 85 selfloop transitions, 35 changer transitions 0/122 dead transitions. [2024-06-21 19:13:43,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 122 transitions, 1537 flow [2024-06-21 19:13:43,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:13:43,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:13:43,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-21 19:13:43,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35080645161290325 [2024-06-21 19:13:43,889 INFO L175 Difference]: Start difference. First operand has 122 places, 111 transitions, 1194 flow. Second operand 8 states and 87 transitions. [2024-06-21 19:13:43,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 122 transitions, 1537 flow [2024-06-21 19:13:43,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 122 transitions, 1502 flow, removed 11 selfloop flow, removed 2 redundant places. [2024-06-21 19:13:43,911 INFO L231 Difference]: Finished difference. Result has 128 places, 114 transitions, 1271 flow [2024-06-21 19:13:43,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1159, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1271, PETRI_PLACES=128, PETRI_TRANSITIONS=114} [2024-06-21 19:13:43,912 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 98 predicate places. [2024-06-21 19:13:43,912 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 114 transitions, 1271 flow [2024-06-21 19:13:43,913 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 19:13:43,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:13:43,913 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:13:43,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-21 19:13:43,913 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 19:13:43,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:13:43,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1931166, now seen corresponding path program 5 times [2024-06-21 19:13:43,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:13:43,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318254712] [2024-06-21 19:13:43,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:13:43,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:13:43,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:13:45,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:13:45,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:13:45,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318254712] [2024-06-21 19:13:45,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318254712] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:13:45,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:13:45,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:13:45,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649646012] [2024-06-21 19:13:45,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:13:45,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:13:45,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:13:45,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:13:45,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:13:45,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:13:45,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 114 transitions, 1271 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 19:13:45,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:13:45,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:13:45,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:13:45,265 INFO L124 PetriNetUnfolderBase]: 316/562 cut-off events. [2024-06-21 19:13:45,265 INFO L125 PetriNetUnfolderBase]: For 12208/12208 co-relation queries the response was YES. [2024-06-21 19:13:45,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3595 conditions, 562 events. 316/562 cut-off events. For 12208/12208 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2253 event pairs, 94 based on Foata normal form. 1/563 useless extension candidates. Maximal degree in co-relation 3534. Up to 493 conditions per place. [2024-06-21 19:13:45,271 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 81 selfloop transitions, 38 changer transitions 0/121 dead transitions. [2024-06-21 19:13:45,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 121 transitions, 1525 flow [2024-06-21 19:13:45,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:13:45,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:13:45,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 85 transitions. [2024-06-21 19:13:45,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34274193548387094 [2024-06-21 19:13:45,272 INFO L175 Difference]: Start difference. First operand has 128 places, 114 transitions, 1271 flow. Second operand 8 states and 85 transitions. [2024-06-21 19:13:45,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 121 transitions, 1525 flow [2024-06-21 19:13:45,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 121 transitions, 1455 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-21 19:13:45,287 INFO L231 Difference]: Finished difference. Result has 132 places, 114 transitions, 1282 flow [2024-06-21 19:13:45,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1201, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1282, PETRI_PLACES=132, PETRI_TRANSITIONS=114} [2024-06-21 19:13:45,288 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 102 predicate places. [2024-06-21 19:13:45,288 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 114 transitions, 1282 flow [2024-06-21 19:13:45,288 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 19:13:45,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:13:45,288 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:13:45,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-21 19:13:45,288 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 19:13:45,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:13:45,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1749422446, now seen corresponding path program 1 times [2024-06-21 19:13:45,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:13:45,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712459290] [2024-06-21 19:13:45,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:13:45,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:13:45,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:13:46,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:13:46,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:13:46,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712459290] [2024-06-21 19:13:46,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712459290] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:13:46,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:13:46,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:13:46,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542310250] [2024-06-21 19:13:46,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:13:46,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:13:46,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:13:46,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:13:46,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:13:47,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:13:47,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 114 transitions, 1282 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 19:13:47,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:13:47,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:13:47,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:13:47,239 INFO L124 PetriNetUnfolderBase]: 314/559 cut-off events. [2024-06-21 19:13:47,239 INFO L125 PetriNetUnfolderBase]: For 12612/12612 co-relation queries the response was YES. [2024-06-21 19:13:47,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3585 conditions, 559 events. 314/559 cut-off events. For 12612/12612 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2257 event pairs, 111 based on Foata normal form. 1/560 useless extension candidates. Maximal degree in co-relation 3524. Up to 531 conditions per place. [2024-06-21 19:13:47,243 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 106 selfloop transitions, 16 changer transitions 0/124 dead transitions. [2024-06-21 19:13:47,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 124 transitions, 1554 flow [2024-06-21 19:13:47,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:13:47,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:13:47,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 93 transitions. [2024-06-21 19:13:47,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3 [2024-06-21 19:13:47,245 INFO L175 Difference]: Start difference. First operand has 132 places, 114 transitions, 1282 flow. Second operand 10 states and 93 transitions. [2024-06-21 19:13:47,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 124 transitions, 1554 flow [2024-06-21 19:13:47,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 124 transitions, 1507 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-21 19:13:47,262 INFO L231 Difference]: Finished difference. Result has 138 places, 116 transitions, 1286 flow [2024-06-21 19:13:47,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1235, PETRI_DIFFERENCE_MINUEND_PLACES=128, 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=1286, PETRI_PLACES=138, PETRI_TRANSITIONS=116} [2024-06-21 19:13:47,263 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 108 predicate places. [2024-06-21 19:13:47,263 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 116 transitions, 1286 flow [2024-06-21 19:13:47,263 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 19:13:47,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:13:47,263 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:13:47,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-21 19:13:47,264 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 19:13:47,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:13:47,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1387546912, now seen corresponding path program 1 times [2024-06-21 19:13:47,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:13:47,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762128630] [2024-06-21 19:13:47,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:13:47,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:13:47,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:13:48,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:13:48,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:13:48,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762128630] [2024-06-21 19:13:48,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762128630] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:13:48,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:13:48,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:13:48,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32062490] [2024-06-21 19:13:48,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:13:48,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:13:48,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:13:48,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:13:48,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:13:48,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-21 19:13:48,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 116 transitions, 1286 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 19:13:48,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:13:48,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-21 19:13:48,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:13:48,414 INFO L124 PetriNetUnfolderBase]: 230/479 cut-off events. [2024-06-21 19:13:48,414 INFO L125 PetriNetUnfolderBase]: For 12715/12725 co-relation queries the response was YES. [2024-06-21 19:13:48,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3061 conditions, 479 events. 230/479 cut-off events. For 12715/12725 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2238 event pairs, 20 based on Foata normal form. 6/484 useless extension candidates. Maximal degree in co-relation 2999. Up to 252 conditions per place. [2024-06-21 19:13:48,417 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 56 selfloop transitions, 31 changer transitions 0/128 dead transitions. [2024-06-21 19:13:48,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 128 transitions, 1512 flow [2024-06-21 19:13:48,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 19:13:48,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 19:13:48,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 98 transitions. [2024-06-21 19:13:48,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45161290322580644 [2024-06-21 19:13:48,419 INFO L175 Difference]: Start difference. First operand has 138 places, 116 transitions, 1286 flow. Second operand 7 states and 98 transitions. [2024-06-21 19:13:48,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 128 transitions, 1512 flow [2024-06-21 19:13:48,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 128 transitions, 1412 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-21 19:13:48,435 INFO L231 Difference]: Finished difference. Result has 134 places, 118 transitions, 1294 flow [2024-06-21 19:13:48,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1186, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1294, PETRI_PLACES=134, PETRI_TRANSITIONS=118} [2024-06-21 19:13:48,435 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 104 predicate places. [2024-06-21 19:13:48,435 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 118 transitions, 1294 flow [2024-06-21 19:13:48,436 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 19:13:48,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:13:48,436 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:13:48,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-21 19:13:48,436 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 19:13:48,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:13:48,437 INFO L85 PathProgramCache]: Analyzing trace with hash 842923282, now seen corresponding path program 2 times [2024-06-21 19:13:48,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:13:48,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556970991] [2024-06-21 19:13:48,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:13:48,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:13:48,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:13:49,695 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 19:13:49,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:13:49,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556970991] [2024-06-21 19:13:49,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556970991] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:13:49,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:13:49,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:13:49,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104735884] [2024-06-21 19:13:49,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:13:49,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:13:49,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:13:49,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:13:49,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:13:49,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:13:49,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 118 transitions, 1294 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 19:13:49,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:13:49,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:13:49,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:13:50,057 INFO L124 PetriNetUnfolderBase]: 297/571 cut-off events. [2024-06-21 19:13:50,057 INFO L125 PetriNetUnfolderBase]: For 16215/16221 co-relation queries the response was YES. [2024-06-21 19:13:50,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3746 conditions, 571 events. 297/571 cut-off events. For 16215/16221 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2615 event pairs, 69 based on Foata normal form. 3/569 useless extension candidates. Maximal degree in co-relation 3684. Up to 439 conditions per place. [2024-06-21 19:13:50,063 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 103 selfloop transitions, 28 changer transitions 0/138 dead transitions. [2024-06-21 19:13:50,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 138 transitions, 1664 flow [2024-06-21 19:13:50,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:13:50,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:13:50,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-21 19:13:50,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2024-06-21 19:13:50,064 INFO L175 Difference]: Start difference. First operand has 134 places, 118 transitions, 1294 flow. Second operand 9 states and 105 transitions. [2024-06-21 19:13:50,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 138 transitions, 1664 flow [2024-06-21 19:13:50,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 138 transitions, 1606 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-06-21 19:13:50,084 INFO L231 Difference]: Finished difference. Result has 140 places, 122 transitions, 1376 flow [2024-06-21 19:13:50,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1252, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1376, PETRI_PLACES=140, PETRI_TRANSITIONS=122} [2024-06-21 19:13:50,085 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 110 predicate places. [2024-06-21 19:13:50,086 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 122 transitions, 1376 flow [2024-06-21 19:13:50,086 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 19:13:50,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:13:50,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:13:50,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-21 19:13:50,086 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 19:13:50,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:13:50,087 INFO L85 PathProgramCache]: Analyzing trace with hash 988921192, now seen corresponding path program 3 times [2024-06-21 19:13:50,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:13:50,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108827420] [2024-06-21 19:13:50,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:13:50,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:13:50,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:13:51,377 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 19:13:51,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:13:51,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108827420] [2024-06-21 19:13:51,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108827420] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:13:51,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:13:51,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:13:51,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544499666] [2024-06-21 19:13:51,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:13:51,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:13:51,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:13:51,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:13:51,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:13:51,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:13:51,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 122 transitions, 1376 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 19:13:51,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:13:51,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:13:51,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:13:51,761 INFO L124 PetriNetUnfolderBase]: 298/581 cut-off events. [2024-06-21 19:13:51,762 INFO L125 PetriNetUnfolderBase]: For 16401/16409 co-relation queries the response was YES. [2024-06-21 19:13:51,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3758 conditions, 581 events. 298/581 cut-off events. For 16401/16409 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2726 event pairs, 75 based on Foata normal form. 4/583 useless extension candidates. Maximal degree in co-relation 3695. Up to 452 conditions per place. [2024-06-21 19:13:51,766 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 99 selfloop transitions, 32 changer transitions 0/138 dead transitions. [2024-06-21 19:13:51,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 138 transitions, 1716 flow [2024-06-21 19:13:51,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:13:51,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:13:51,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 99 transitions. [2024-06-21 19:13:51,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39919354838709675 [2024-06-21 19:13:51,767 INFO L175 Difference]: Start difference. First operand has 140 places, 122 transitions, 1376 flow. Second operand 8 states and 99 transitions. [2024-06-21 19:13:51,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 138 transitions, 1716 flow [2024-06-21 19:13:51,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 138 transitions, 1638 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-21 19:13:51,795 INFO L231 Difference]: Finished difference. Result has 142 places, 124 transitions, 1415 flow [2024-06-21 19:13:51,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1298, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1415, PETRI_PLACES=142, PETRI_TRANSITIONS=124} [2024-06-21 19:13:51,796 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 112 predicate places. [2024-06-21 19:13:51,796 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 124 transitions, 1415 flow [2024-06-21 19:13:51,796 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 19:13:51,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:13:51,796 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:13:51,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-21 19:13:51,797 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 19:13:51,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:13:51,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1075772342, now seen corresponding path program 1 times [2024-06-21 19:13:51,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:13:51,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333882749] [2024-06-21 19:13:51,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:13:51,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:13:51,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:13:52,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:13:52,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:13:52,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333882749] [2024-06-21 19:13:52,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333882749] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:13:52,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:13:52,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:13:52,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54240710] [2024-06-21 19:13:52,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:13:52,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:13:52,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:13:52,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:13:52,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:13:52,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:13:52,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 124 transitions, 1415 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 19:13:52,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:13:52,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:13:52,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:13:53,015 INFO L124 PetriNetUnfolderBase]: 372/679 cut-off events. [2024-06-21 19:13:53,016 INFO L125 PetriNetUnfolderBase]: For 17602/17602 co-relation queries the response was YES. [2024-06-21 19:13:53,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4278 conditions, 679 events. 372/679 cut-off events. For 17602/17602 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3063 event pairs, 81 based on Foata normal form. 1/680 useless extension candidates. Maximal degree in co-relation 4215. Up to 607 conditions per place. [2024-06-21 19:13:53,022 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 107 selfloop transitions, 33 changer transitions 0/142 dead transitions. [2024-06-21 19:13:53,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 142 transitions, 1770 flow [2024-06-21 19:13:53,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:13:53,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:13:53,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 103 transitions. [2024-06-21 19:13:53,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33225806451612905 [2024-06-21 19:13:53,024 INFO L175 Difference]: Start difference. First operand has 142 places, 124 transitions, 1415 flow. Second operand 10 states and 103 transitions. [2024-06-21 19:13:53,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 142 transitions, 1770 flow [2024-06-21 19:13:53,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 142 transitions, 1677 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-21 19:13:53,057 INFO L231 Difference]: Finished difference. Result has 147 places, 128 transitions, 1441 flow [2024-06-21 19:13:53,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1322, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1441, PETRI_PLACES=147, PETRI_TRANSITIONS=128} [2024-06-21 19:13:53,059 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 117 predicate places. [2024-06-21 19:13:53,059 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 128 transitions, 1441 flow [2024-06-21 19:13:53,060 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 19:13:53,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:13:53,060 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:13:53,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-21 19:13:53,060 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 19:13:53,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:13:53,061 INFO L85 PathProgramCache]: Analyzing trace with hash 234553584, now seen corresponding path program 4 times [2024-06-21 19:13:53,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:13:53,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948856569] [2024-06-21 19:13:53,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:13:53,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:13:53,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:13:54,174 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 19:13:54,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:13:54,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948856569] [2024-06-21 19:13:54,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948856569] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:13:54,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:13:54,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:13:54,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856060595] [2024-06-21 19:13:54,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:13:54,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:13:54,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:13:54,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:13:54,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:13:54,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:13:54,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 128 transitions, 1441 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 19:13:54,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:13:54,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:13:54,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:13:54,644 INFO L124 PetriNetUnfolderBase]: 326/633 cut-off events. [2024-06-21 19:13:54,644 INFO L125 PetriNetUnfolderBase]: For 19076/19076 co-relation queries the response was YES. [2024-06-21 19:13:54,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4170 conditions, 633 events. 326/633 cut-off events. For 19076/19076 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3036 event pairs, 49 based on Foata normal form. 2/633 useless extension candidates. Maximal degree in co-relation 4104. Up to 510 conditions per place. [2024-06-21 19:13:54,648 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 112 selfloop transitions, 25 changer transitions 0/145 dead transitions. [2024-06-21 19:13:54,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 145 transitions, 1792 flow [2024-06-21 19:13:54,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:13:54,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:13:54,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-21 19:13:54,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37992831541218636 [2024-06-21 19:13:54,650 INFO L175 Difference]: Start difference. First operand has 147 places, 128 transitions, 1441 flow. Second operand 9 states and 106 transitions. [2024-06-21 19:13:54,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 145 transitions, 1792 flow [2024-06-21 19:13:54,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 145 transitions, 1705 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-21 19:13:54,675 INFO L231 Difference]: Finished difference. Result has 150 places, 130 transitions, 1451 flow [2024-06-21 19:13:54,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1354, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1451, PETRI_PLACES=150, PETRI_TRANSITIONS=130} [2024-06-21 19:13:54,676 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 120 predicate places. [2024-06-21 19:13:54,676 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 130 transitions, 1451 flow [2024-06-21 19:13:54,676 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 19:13:54,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:13:54,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:13:54,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-21 19:13:54,677 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 19:13:54,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:13:54,677 INFO L85 PathProgramCache]: Analyzing trace with hash 617737820, now seen corresponding path program 5 times [2024-06-21 19:13:54,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:13:54,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139065155] [2024-06-21 19:13:54,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:13:54,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:13:54,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:13:55,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:13:55,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:13:55,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139065155] [2024-06-21 19:13:55,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139065155] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:13:55,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:13:55,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:13:55,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475813516] [2024-06-21 19:13:55,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:13:55,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:13:55,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:13:55,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:13:55,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:13:55,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:13:55,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 130 transitions, 1451 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 19:13:55,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:13:55,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:13:55,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:13:56,185 INFO L124 PetriNetUnfolderBase]: 327/640 cut-off events. [2024-06-21 19:13:56,185 INFO L125 PetriNetUnfolderBase]: For 19504/19504 co-relation queries the response was YES. [2024-06-21 19:13:56,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4150 conditions, 640 events. 327/640 cut-off events. For 19504/19504 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3111 event pairs, 52 based on Foata normal form. 2/640 useless extension candidates. Maximal degree in co-relation 4082. Up to 510 conditions per place. [2024-06-21 19:13:56,191 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 107 selfloop transitions, 30 changer transitions 0/145 dead transitions. [2024-06-21 19:13:56,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 145 transitions, 1807 flow [2024-06-21 19:13:56,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:13:56,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:13:56,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-21 19:13:56,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37992831541218636 [2024-06-21 19:13:56,193 INFO L175 Difference]: Start difference. First operand has 150 places, 130 transitions, 1451 flow. Second operand 9 states and 106 transitions. [2024-06-21 19:13:56,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 145 transitions, 1807 flow [2024-06-21 19:13:56,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 145 transitions, 1731 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-21 19:13:56,229 INFO L231 Difference]: Finished difference. Result has 153 places, 132 transitions, 1493 flow [2024-06-21 19:13:56,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1375, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1493, PETRI_PLACES=153, PETRI_TRANSITIONS=132} [2024-06-21 19:13:56,230 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 123 predicate places. [2024-06-21 19:13:56,230 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 132 transitions, 1493 flow [2024-06-21 19:13:56,231 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 19:13:56,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:13:56,231 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:13:56,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-21 19:13:56,231 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 19:13:56,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:13:56,232 INFO L85 PathProgramCache]: Analyzing trace with hash 620539290, now seen corresponding path program 2 times [2024-06-21 19:13:56,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:13:56,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581654452] [2024-06-21 19:13:56,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:13:56,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:13:56,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:13:57,293 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 19:13:57,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:13:57,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581654452] [2024-06-21 19:13:57,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581654452] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:13:57,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:13:57,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:13:57,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172632458] [2024-06-21 19:13:57,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:13:57,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:13:57,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:13:57,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:13:57,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:13:57,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:13:57,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 132 transitions, 1493 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 19:13:57,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:13:57,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:13:57,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:13:57,633 INFO L124 PetriNetUnfolderBase]: 404/741 cut-off events. [2024-06-21 19:13:57,634 INFO L125 PetriNetUnfolderBase]: For 21156/21156 co-relation queries the response was YES. [2024-06-21 19:13:57,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4724 conditions, 741 events. 404/741 cut-off events. For 21156/21156 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3465 event pairs, 85 based on Foata normal form. 1/742 useless extension candidates. Maximal degree in co-relation 4655. Up to 671 conditions per place. [2024-06-21 19:13:57,641 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 117 selfloop transitions, 30 changer transitions 0/149 dead transitions. [2024-06-21 19:13:57,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 149 transitions, 1865 flow [2024-06-21 19:13:57,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:13:57,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:13:57,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-21 19:13:57,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33548387096774196 [2024-06-21 19:13:57,643 INFO L175 Difference]: Start difference. First operand has 153 places, 132 transitions, 1493 flow. Second operand 10 states and 104 transitions. [2024-06-21 19:13:57,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 149 transitions, 1865 flow [2024-06-21 19:13:57,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 149 transitions, 1769 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-21 19:13:57,688 INFO L231 Difference]: Finished difference. Result has 157 places, 136 transitions, 1515 flow [2024-06-21 19:13:57,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1397, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1515, PETRI_PLACES=157, PETRI_TRANSITIONS=136} [2024-06-21 19:13:57,689 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 127 predicate places. [2024-06-21 19:13:57,689 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 136 transitions, 1515 flow [2024-06-21 19:13:57,689 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 19:13:57,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:13:57,689 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:13:57,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-21 19:13:57,690 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 19:13:57,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:13:57,690 INFO L85 PathProgramCache]: Analyzing trace with hash 735830460, now seen corresponding path program 3 times [2024-06-21 19:13:57,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:13:57,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54160803] [2024-06-21 19:13:57,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:13:57,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:13:57,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:13:58,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:13:58,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:13:58,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54160803] [2024-06-21 19:13:58,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54160803] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:13:58,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:13:58,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:13:58,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065760106] [2024-06-21 19:13:58,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:13:58,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:13:58,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:13:58,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:13:58,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:13:58,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:13:58,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 136 transitions, 1515 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 19:13:58,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:13:58,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:13:58,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:13:59,075 INFO L124 PetriNetUnfolderBase]: 420/767 cut-off events. [2024-06-21 19:13:59,075 INFO L125 PetriNetUnfolderBase]: For 23240/23240 co-relation queries the response was YES. [2024-06-21 19:13:59,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5006 conditions, 767 events. 420/767 cut-off events. For 23240/23240 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3605 event pairs, 78 based on Foata normal form. 1/768 useless extension candidates. Maximal degree in co-relation 4935. Up to 635 conditions per place. [2024-06-21 19:13:59,080 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 111 selfloop transitions, 47 changer transitions 0/160 dead transitions. [2024-06-21 19:13:59,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 160 transitions, 2130 flow [2024-06-21 19:13:59,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:13:59,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:13:59,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-21 19:13:59,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3580645161290323 [2024-06-21 19:13:59,094 INFO L175 Difference]: Start difference. First operand has 157 places, 136 transitions, 1515 flow. Second operand 10 states and 111 transitions. [2024-06-21 19:13:59,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 160 transitions, 2130 flow [2024-06-21 19:13:59,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 160 transitions, 2043 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-21 19:13:59,141 INFO L231 Difference]: Finished difference. Result has 163 places, 145 transitions, 1685 flow [2024-06-21 19:13:59,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1428, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1685, PETRI_PLACES=163, PETRI_TRANSITIONS=145} [2024-06-21 19:13:59,142 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 133 predicate places. [2024-06-21 19:13:59,142 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 145 transitions, 1685 flow [2024-06-21 19:13:59,142 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 19:13:59,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:13:59,143 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:13:59,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-21 19:13:59,143 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 19:13:59,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:13:59,143 INFO L85 PathProgramCache]: Analyzing trace with hash 736003440, now seen corresponding path program 4 times [2024-06-21 19:13:59,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:13:59,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10399365] [2024-06-21 19:13:59,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:13:59,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:13:59,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:00,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:00,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:00,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10399365] [2024-06-21 19:14:00,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10399365] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:00,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:00,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:14:00,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220711034] [2024-06-21 19:14:00,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:00,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:14:00,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:00,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:14:00,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:14:00,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:14:00,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 145 transitions, 1685 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 19:14:00,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:00,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:14:00,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:00,587 INFO L124 PetriNetUnfolderBase]: 423/772 cut-off events. [2024-06-21 19:14:00,588 INFO L125 PetriNetUnfolderBase]: For 25278/25278 co-relation queries the response was YES. [2024-06-21 19:14:00,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5272 conditions, 772 events. 423/772 cut-off events. For 25278/25278 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3642 event pairs, 78 based on Foata normal form. 1/773 useless extension candidates. Maximal degree in co-relation 5197. Up to 639 conditions per place. [2024-06-21 19:14:00,596 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 108 selfloop transitions, 56 changer transitions 0/166 dead transitions. [2024-06-21 19:14:00,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 166 transitions, 2298 flow [2024-06-21 19:14:00,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:14:00,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:14:00,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-21 19:14:00,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3580645161290323 [2024-06-21 19:14:00,598 INFO L175 Difference]: Start difference. First operand has 163 places, 145 transitions, 1685 flow. Second operand 10 states and 111 transitions. [2024-06-21 19:14:00,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 166 transitions, 2298 flow [2024-06-21 19:14:00,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 166 transitions, 2202 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-06-21 19:14:00,649 INFO L231 Difference]: Finished difference. Result has 169 places, 152 transitions, 1836 flow [2024-06-21 19:14:00,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1593, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1836, PETRI_PLACES=169, PETRI_TRANSITIONS=152} [2024-06-21 19:14:00,650 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 139 predicate places. [2024-06-21 19:14:00,650 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 152 transitions, 1836 flow [2024-06-21 19:14:00,650 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 19:14:00,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:00,651 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:00,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-21 19:14:00,651 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 19:14:00,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:00,651 INFO L85 PathProgramCache]: Analyzing trace with hash -982928402, now seen corresponding path program 5 times [2024-06-21 19:14:00,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:00,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983140566] [2024-06-21 19:14:00,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:00,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:00,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:01,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:01,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:01,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983140566] [2024-06-21 19:14:01,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983140566] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:01,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:01,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:14:01,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120413194] [2024-06-21 19:14:01,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:01,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:14:01,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:01,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:14:01,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:14:01,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:14:01,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 152 transitions, 1836 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 19:14:01,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:01,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:14:01,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:02,056 INFO L124 PetriNetUnfolderBase]: 421/769 cut-off events. [2024-06-21 19:14:02,056 INFO L125 PetriNetUnfolderBase]: For 26203/26203 co-relation queries the response was YES. [2024-06-21 19:14:02,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5341 conditions, 769 events. 421/769 cut-off events. For 26203/26203 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3625 event pairs, 82 based on Foata normal form. 1/770 useless extension candidates. Maximal degree in co-relation 5264. Up to 637 conditions per place. [2024-06-21 19:14:02,061 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 101 selfloop transitions, 62 changer transitions 0/165 dead transitions. [2024-06-21 19:14:02,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 165 transitions, 2266 flow [2024-06-21 19:14:02,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:14:02,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:14:02,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-21 19:14:02,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-21 19:14:02,070 INFO L175 Difference]: Start difference. First operand has 169 places, 152 transitions, 1836 flow. Second operand 10 states and 110 transitions. [2024-06-21 19:14:02,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 165 transitions, 2266 flow [2024-06-21 19:14:02,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 165 transitions, 2143 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-21 19:14:02,136 INFO L231 Difference]: Finished difference. Result has 173 places, 152 transitions, 1842 flow [2024-06-21 19:14:02,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1713, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1842, PETRI_PLACES=173, PETRI_TRANSITIONS=152} [2024-06-21 19:14:02,137 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 143 predicate places. [2024-06-21 19:14:02,137 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 152 transitions, 1842 flow [2024-06-21 19:14:02,137 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 19:14:02,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:02,138 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:02,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-21 19:14:02,138 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 19:14:02,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:02,138 INFO L85 PathProgramCache]: Analyzing trace with hash 736010198, now seen corresponding path program 1 times [2024-06-21 19:14:02,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:02,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125116735] [2024-06-21 19:14:02,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:02,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:02,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:03,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:03,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:03,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125116735] [2024-06-21 19:14:03,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125116735] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:03,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:03,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:14:03,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574563673] [2024-06-21 19:14:03,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:03,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:14:03,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:03,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:14:03,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:14:03,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:14:03,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 152 transitions, 1842 flow. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:03,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:03,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:14:03,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:03,554 INFO L124 PetriNetUnfolderBase]: 424/774 cut-off events. [2024-06-21 19:14:03,554 INFO L125 PetriNetUnfolderBase]: For 25545/25545 co-relation queries the response was YES. [2024-06-21 19:14:03,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5206 conditions, 774 events. 424/774 cut-off events. For 25545/25545 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3659 event pairs, 131 based on Foata normal form. 1/775 useless extension candidates. Maximal degree in co-relation 5129. Up to 727 conditions per place. [2024-06-21 19:14:03,559 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 139 selfloop transitions, 23 changer transitions 0/164 dead transitions. [2024-06-21 19:14:03,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 164 transitions, 2210 flow [2024-06-21 19:14:03,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:14:03,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:14:03,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2024-06-21 19:14:03,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-21 19:14:03,569 INFO L175 Difference]: Start difference. First operand has 173 places, 152 transitions, 1842 flow. Second operand 8 states and 93 transitions. [2024-06-21 19:14:03,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 164 transitions, 2210 flow [2024-06-21 19:14:03,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 164 transitions, 2125 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-21 19:14:03,636 INFO L231 Difference]: Finished difference. Result has 175 places, 154 transitions, 1833 flow [2024-06-21 19:14:03,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1757, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1833, PETRI_PLACES=175, PETRI_TRANSITIONS=154} [2024-06-21 19:14:03,636 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 145 predicate places. [2024-06-21 19:14:03,636 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 154 transitions, 1833 flow [2024-06-21 19:14:03,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:03,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:03,637 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:03,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-21 19:14:03,637 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 19:14:03,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:03,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1581865004, now seen corresponding path program 6 times [2024-06-21 19:14:03,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:03,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948645245] [2024-06-21 19:14:03,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:03,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:03,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:04,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:04,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:04,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948645245] [2024-06-21 19:14:04,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948645245] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:04,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:04,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:14:04,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495758204] [2024-06-21 19:14:04,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:04,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:14:04,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:04,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:14:04,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:14:04,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:14:04,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 154 transitions, 1833 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 19:14:04,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:04,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:14:04,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:05,186 INFO L124 PetriNetUnfolderBase]: 367/711 cut-off events. [2024-06-21 19:14:05,186 INFO L125 PetriNetUnfolderBase]: For 28391/28399 co-relation queries the response was YES. [2024-06-21 19:14:05,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5046 conditions, 711 events. 367/711 cut-off events. For 28391/28399 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3549 event pairs, 57 based on Foata normal form. 4/707 useless extension candidates. Maximal degree in co-relation 4969. Up to 574 conditions per place. [2024-06-21 19:14:05,191 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 131 selfloop transitions, 25 changer transitions 0/167 dead transitions. [2024-06-21 19:14:05,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 167 transitions, 2211 flow [2024-06-21 19:14:05,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:14:05,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:14:05,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-21 19:14:05,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36917562724014336 [2024-06-21 19:14:05,192 INFO L175 Difference]: Start difference. First operand has 175 places, 154 transitions, 1833 flow. Second operand 9 states and 103 transitions. [2024-06-21 19:14:05,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 167 transitions, 2211 flow [2024-06-21 19:14:05,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 167 transitions, 2153 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-21 19:14:05,240 INFO L231 Difference]: Finished difference. Result has 178 places, 155 transitions, 1865 flow [2024-06-21 19:14:05,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1775, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1865, PETRI_PLACES=178, PETRI_TRANSITIONS=155} [2024-06-21 19:14:05,241 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 148 predicate places. [2024-06-21 19:14:05,241 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 155 transitions, 1865 flow [2024-06-21 19:14:05,241 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 19:14:05,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:05,241 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:05,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-21 19:14:05,242 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 19:14:05,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:05,242 INFO L85 PathProgramCache]: Analyzing trace with hash -381931660, now seen corresponding path program 7 times [2024-06-21 19:14:05,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:05,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752544716] [2024-06-21 19:14:05,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:05,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:05,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:06,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:06,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:06,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752544716] [2024-06-21 19:14:06,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752544716] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:06,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:06,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:14:06,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111676133] [2024-06-21 19:14:06,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:06,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:14:06,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:06,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:14:06,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:14:06,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:14:06,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 155 transitions, 1865 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 19:14:06,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:06,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:14:06,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:06,874 INFO L124 PetriNetUnfolderBase]: 365/713 cut-off events. [2024-06-21 19:14:06,874 INFO L125 PetriNetUnfolderBase]: For 30078/30086 co-relation queries the response was YES. [2024-06-21 19:14:06,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5058 conditions, 713 events. 365/713 cut-off events. For 30078/30086 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3587 event pairs, 59 based on Foata normal form. 4/709 useless extension candidates. Maximal degree in co-relation 4979. Up to 577 conditions per place. [2024-06-21 19:14:06,879 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 126 selfloop transitions, 29 changer transitions 0/166 dead transitions. [2024-06-21 19:14:06,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 166 transitions, 2237 flow [2024-06-21 19:14:06,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:14:06,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:14:06,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-21 19:14:06,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36917562724014336 [2024-06-21 19:14:06,880 INFO L175 Difference]: Start difference. First operand has 178 places, 155 transitions, 1865 flow. Second operand 9 states and 103 transitions. [2024-06-21 19:14:06,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 166 transitions, 2237 flow [2024-06-21 19:14:06,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 166 transitions, 2156 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-21 19:14:06,932 INFO L231 Difference]: Finished difference. Result has 181 places, 156 transitions, 1885 flow [2024-06-21 19:14:06,932 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1784, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1885, PETRI_PLACES=181, PETRI_TRANSITIONS=156} [2024-06-21 19:14:06,933 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 151 predicate places. [2024-06-21 19:14:06,933 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 156 transitions, 1885 flow [2024-06-21 19:14:06,933 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 19:14:06,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:06,933 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:06,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-21 19:14:06,934 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 19:14:06,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:06,934 INFO L85 PathProgramCache]: Analyzing trace with hash -379130190, now seen corresponding path program 6 times [2024-06-21 19:14:06,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:06,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297954795] [2024-06-21 19:14:06,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:06,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:06,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:07,909 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 19:14:07,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:07,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297954795] [2024-06-21 19:14:07,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297954795] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:07,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:07,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:14:07,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012604432] [2024-06-21 19:14:07,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:07,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:14:07,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:07,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:14:07,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:14:07,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:14:07,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 156 transitions, 1885 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 19:14:07,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:07,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:14:07,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:08,242 INFO L124 PetriNetUnfolderBase]: 443/811 cut-off events. [2024-06-21 19:14:08,242 INFO L125 PetriNetUnfolderBase]: For 30314/30314 co-relation queries the response was YES. [2024-06-21 19:14:08,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5509 conditions, 811 events. 443/811 cut-off events. For 30314/30314 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3911 event pairs, 85 based on Foata normal form. 1/812 useless extension candidates. Maximal degree in co-relation 5430. Up to 741 conditions per place. [2024-06-21 19:14:08,247 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 138 selfloop transitions, 30 changer transitions 0/170 dead transitions. [2024-06-21 19:14:08,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 170 transitions, 2297 flow [2024-06-21 19:14:08,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:14:08,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:14:08,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-21 19:14:08,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32903225806451614 [2024-06-21 19:14:08,248 INFO L175 Difference]: Start difference. First operand has 181 places, 156 transitions, 1885 flow. Second operand 10 states and 102 transitions. [2024-06-21 19:14:08,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 170 transitions, 2297 flow [2024-06-21 19:14:08,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 170 transitions, 2208 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-21 19:14:08,297 INFO L231 Difference]: Finished difference. Result has 185 places, 160 transitions, 1920 flow [2024-06-21 19:14:08,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1796, PETRI_DIFFERENCE_MINUEND_PLACES=174, 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=10, PETRI_FLOW=1920, PETRI_PLACES=185, PETRI_TRANSITIONS=160} [2024-06-21 19:14:08,297 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 155 predicate places. [2024-06-21 19:14:08,297 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 160 transitions, 1920 flow [2024-06-21 19:14:08,298 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 19:14:08,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:08,298 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:08,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-21 19:14:08,298 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 19:14:08,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:08,298 INFO L85 PathProgramCache]: Analyzing trace with hash -2059696156, now seen corresponding path program 7 times [2024-06-21 19:14:08,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:08,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482167711] [2024-06-21 19:14:08,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:08,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:08,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:09,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:09,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:09,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482167711] [2024-06-21 19:14:09,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482167711] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:09,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:09,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:14:09,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597884185] [2024-06-21 19:14:09,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:09,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:14:09,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:09,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:14:09,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:14:09,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:14:09,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 160 transitions, 1920 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 19:14:09,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:09,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:14:09,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:09,691 INFO L124 PetriNetUnfolderBase]: 456/832 cut-off events. [2024-06-21 19:14:09,691 INFO L125 PetriNetUnfolderBase]: For 33202/33202 co-relation queries the response was YES. [2024-06-21 19:14:09,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5818 conditions, 832 events. 456/832 cut-off events. For 33202/33202 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 4028 event pairs, 81 based on Foata normal form. 1/833 useless extension candidates. Maximal degree in co-relation 5737. Up to 728 conditions per place. [2024-06-21 19:14:09,699 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 132 selfloop transitions, 44 changer transitions 0/178 dead transitions. [2024-06-21 19:14:09,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 178 transitions, 2495 flow [2024-06-21 19:14:09,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:14:09,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:14:09,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-21 19:14:09,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-21 19:14:09,701 INFO L175 Difference]: Start difference. First operand has 185 places, 160 transitions, 1920 flow. Second operand 10 states and 109 transitions. [2024-06-21 19:14:09,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 178 transitions, 2495 flow [2024-06-21 19:14:09,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 178 transitions, 2400 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-21 19:14:09,765 INFO L231 Difference]: Finished difference. Result has 190 places, 168 transitions, 2063 flow [2024-06-21 19:14:09,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1825, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2063, PETRI_PLACES=190, PETRI_TRANSITIONS=168} [2024-06-21 19:14:09,765 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 160 predicate places. [2024-06-21 19:14:09,765 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 168 transitions, 2063 flow [2024-06-21 19:14:09,766 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 19:14:09,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:09,766 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:09,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-21 19:14:09,766 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 19:14:09,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:09,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1611673264, now seen corresponding path program 8 times [2024-06-21 19:14:09,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:09,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862324964] [2024-06-21 19:14:09,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:09,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:09,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:11,012 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 19:14:11,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:11,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862324964] [2024-06-21 19:14:11,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862324964] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:11,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:11,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:14:11,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180991053] [2024-06-21 19:14:11,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:11,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:14:11,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:11,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:14:11,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:14:11,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:14:11,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 168 transitions, 2063 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 19:14:11,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:11,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:14:11,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:11,402 INFO L124 PetriNetUnfolderBase]: 462/842 cut-off events. [2024-06-21 19:14:11,402 INFO L125 PetriNetUnfolderBase]: For 35293/35293 co-relation queries the response was YES. [2024-06-21 19:14:11,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6071 conditions, 842 events. 462/842 cut-off events. For 35293/35293 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 4077 event pairs, 81 based on Foata normal form. 1/843 useless extension candidates. Maximal degree in co-relation 5988. Up to 734 conditions per place. [2024-06-21 19:14:11,409 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 135 selfloop transitions, 45 changer transitions 0/182 dead transitions. [2024-06-21 19:14:11,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 182 transitions, 2595 flow [2024-06-21 19:14:11,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:14:11,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:14:11,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-21 19:14:11,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-21 19:14:11,410 INFO L175 Difference]: Start difference. First operand has 190 places, 168 transitions, 2063 flow. Second operand 10 states and 109 transitions. [2024-06-21 19:14:11,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 182 transitions, 2595 flow [2024-06-21 19:14:11,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 182 transitions, 2463 flow, removed 29 selfloop flow, removed 5 redundant places. [2024-06-21 19:14:11,472 INFO L231 Difference]: Finished difference. Result has 196 places, 172 transitions, 2098 flow [2024-06-21 19:14:11,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1937, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2098, PETRI_PLACES=196, PETRI_TRANSITIONS=172} [2024-06-21 19:14:11,472 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 166 predicate places. [2024-06-21 19:14:11,473 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 172 transitions, 2098 flow [2024-06-21 19:14:11,473 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 19:14:11,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:11,473 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:11,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-21 19:14:11,473 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 19:14:11,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:11,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1463711914, now seen corresponding path program 9 times [2024-06-21 19:14:11,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:11,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230603059] [2024-06-21 19:14:11,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:11,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:11,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:12,567 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 19:14:12,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:12,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230603059] [2024-06-21 19:14:12,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230603059] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:12,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:12,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:14:12,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37508606] [2024-06-21 19:14:12,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:12,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:14:12,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:12,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:14:12,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:14:12,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:14:12,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 172 transitions, 2098 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 19:14:12,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:12,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:14:12,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:12,898 INFO L124 PetriNetUnfolderBase]: 460/839 cut-off events. [2024-06-21 19:14:12,899 INFO L125 PetriNetUnfolderBase]: For 34772/34772 co-relation queries the response was YES. [2024-06-21 19:14:12,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5930 conditions, 839 events. 460/839 cut-off events. For 34772/34772 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 4064 event pairs, 85 based on Foata normal form. 1/840 useless extension candidates. Maximal degree in co-relation 5844. Up to 732 conditions per place. [2024-06-21 19:14:12,905 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 137 selfloop transitions, 45 changer transitions 0/184 dead transitions. [2024-06-21 19:14:12,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 184 transitions, 2602 flow [2024-06-21 19:14:12,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:14:12,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:14:12,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-21 19:14:12,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-21 19:14:12,907 INFO L175 Difference]: Start difference. First operand has 196 places, 172 transitions, 2098 flow. Second operand 10 states and 109 transitions. [2024-06-21 19:14:12,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 184 transitions, 2602 flow [2024-06-21 19:14:12,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 184 transitions, 2505 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-21 19:14:12,974 INFO L231 Difference]: Finished difference. Result has 201 places, 174 transitions, 2138 flow [2024-06-21 19:14:12,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2003, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2138, PETRI_PLACES=201, PETRI_TRANSITIONS=174} [2024-06-21 19:14:12,974 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 171 predicate places. [2024-06-21 19:14:12,974 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 174 transitions, 2138 flow [2024-06-21 19:14:12,974 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 19:14:12,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:12,975 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:12,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-21 19:14:12,975 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 19:14:12,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:12,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1463716874, now seen corresponding path program 8 times [2024-06-21 19:14:12,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:12,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301216623] [2024-06-21 19:14:12,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:12,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:12,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:14,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:14,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:14,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301216623] [2024-06-21 19:14:14,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301216623] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:14,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:14,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:14:14,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576107393] [2024-06-21 19:14:14,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:14,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:14:14,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:14,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:14:14,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:14:14,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:14:14,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 174 transitions, 2138 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 19:14:14,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:14,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:14:14,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:14,673 INFO L124 PetriNetUnfolderBase]: 392/757 cut-off events. [2024-06-21 19:14:14,673 INFO L125 PetriNetUnfolderBase]: For 37789/37793 co-relation queries the response was YES. [2024-06-21 19:14:14,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5584 conditions, 757 events. 392/757 cut-off events. For 37789/37793 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 3839 event pairs, 58 based on Foata normal form. 4/751 useless extension candidates. Maximal degree in co-relation 5496. Up to 597 conditions per place. [2024-06-21 19:14:14,679 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 132 selfloop transitions, 39 changer transitions 0/185 dead transitions. [2024-06-21 19:14:14,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 185 transitions, 2542 flow [2024-06-21 19:14:14,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:14:14,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:14:14,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-21 19:14:14,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835125448028674 [2024-06-21 19:14:14,681 INFO L175 Difference]: Start difference. First operand has 201 places, 174 transitions, 2138 flow. Second operand 9 states and 107 transitions. [2024-06-21 19:14:14,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 185 transitions, 2542 flow [2024-06-21 19:14:14,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 185 transitions, 2443 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-21 19:14:14,761 INFO L231 Difference]: Finished difference. Result has 204 places, 175 transitions, 2161 flow [2024-06-21 19:14:14,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2039, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2161, PETRI_PLACES=204, PETRI_TRANSITIONS=175} [2024-06-21 19:14:14,762 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 174 predicate places. [2024-06-21 19:14:14,762 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 175 transitions, 2161 flow [2024-06-21 19:14:14,762 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 19:14:14,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:14,763 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:14,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-21 19:14:14,763 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 19:14:14,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:14,763 INFO L85 PathProgramCache]: Analyzing trace with hash -176492412, now seen corresponding path program 9 times [2024-06-21 19:14:14,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:14,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880800111] [2024-06-21 19:14:14,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:14,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:14,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:16,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:16,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:16,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880800111] [2024-06-21 19:14:16,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880800111] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:16,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:16,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:14:16,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105087189] [2024-06-21 19:14:16,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:16,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:14:16,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:16,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:14:16,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:14:16,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:14:16,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 175 transitions, 2161 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 19:14:16,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:16,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:14:16,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:16,404 INFO L124 PetriNetUnfolderBase]: 389/753 cut-off events. [2024-06-21 19:14:16,404 INFO L125 PetriNetUnfolderBase]: For 35503/35507 co-relation queries the response was YES. [2024-06-21 19:14:16,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5451 conditions, 753 events. 389/753 cut-off events. For 35503/35507 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 3816 event pairs, 63 based on Foata normal form. 2/745 useless extension candidates. Maximal degree in co-relation 5363. Up to 531 conditions per place. [2024-06-21 19:14:16,410 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 105 selfloop transitions, 64 changer transitions 0/183 dead transitions. [2024-06-21 19:14:16,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 183 transitions, 2517 flow [2024-06-21 19:14:16,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:14:16,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:14:16,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-21 19:14:16,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36917562724014336 [2024-06-21 19:14:16,411 INFO L175 Difference]: Start difference. First operand has 204 places, 175 transitions, 2161 flow. Second operand 9 states and 103 transitions. [2024-06-21 19:14:16,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 183 transitions, 2517 flow [2024-06-21 19:14:16,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 183 transitions, 2395 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-21 19:14:16,488 INFO L231 Difference]: Finished difference. Result has 206 places, 175 transitions, 2171 flow [2024-06-21 19:14:16,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2039, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2171, PETRI_PLACES=206, PETRI_TRANSITIONS=175} [2024-06-21 19:14:16,488 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 176 predicate places. [2024-06-21 19:14:16,488 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 175 transitions, 2171 flow [2024-06-21 19:14:16,488 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 19:14:16,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:16,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:16,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-21 19:14:16,489 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 19:14:16,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:16,489 INFO L85 PathProgramCache]: Analyzing trace with hash -176487452, now seen corresponding path program 10 times [2024-06-21 19:14:16,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:16,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455061497] [2024-06-21 19:14:16,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:16,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:16,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:17,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:17,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:17,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455061497] [2024-06-21 19:14:17,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455061497] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:17,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:17,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:14:17,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149412045] [2024-06-21 19:14:17,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:17,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:14:17,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:17,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:14:17,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:14:17,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:14:17,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 175 transitions, 2171 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 19:14:17,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:17,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:14:17,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:17,989 INFO L124 PetriNetUnfolderBase]: 468/855 cut-off events. [2024-06-21 19:14:17,990 INFO L125 PetriNetUnfolderBase]: For 35394/35394 co-relation queries the response was YES. [2024-06-21 19:14:17,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5926 conditions, 855 events. 468/855 cut-off events. For 35394/35394 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4193 event pairs, 82 based on Foata normal form. 1/856 useless extension candidates. Maximal degree in co-relation 5837. Up to 626 conditions per place. [2024-06-21 19:14:17,996 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 104 selfloop transitions, 86 changer transitions 0/192 dead transitions. [2024-06-21 19:14:17,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 192 transitions, 2861 flow [2024-06-21 19:14:17,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:14:17,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:14:17,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-21 19:14:17,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-21 19:14:17,998 INFO L175 Difference]: Start difference. First operand has 206 places, 175 transitions, 2171 flow. Second operand 10 states and 110 transitions. [2024-06-21 19:14:17,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 192 transitions, 2861 flow [2024-06-21 19:14:18,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 192 transitions, 2671 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-21 19:14:18,085 INFO L231 Difference]: Finished difference. Result has 210 places, 182 transitions, 2283 flow [2024-06-21 19:14:18,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1983, PETRI_DIFFERENCE_MINUEND_PLACES=198, 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=10, PETRI_FLOW=2283, PETRI_PLACES=210, PETRI_TRANSITIONS=182} [2024-06-21 19:14:18,085 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 180 predicate places. [2024-06-21 19:14:18,085 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 182 transitions, 2283 flow [2024-06-21 19:14:18,086 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 19:14:18,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:18,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:18,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-21 19:14:18,086 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 19:14:18,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:18,087 INFO L85 PathProgramCache]: Analyzing trace with hash -176314472, now seen corresponding path program 11 times [2024-06-21 19:14:18,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:18,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066530593] [2024-06-21 19:14:18,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:18,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:18,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:19,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:19,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:19,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066530593] [2024-06-21 19:14:19,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066530593] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:19,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:19,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:14:19,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775469779] [2024-06-21 19:14:19,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:19,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:14:19,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:19,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:14:19,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:14:19,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:14:19,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 182 transitions, 2283 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 19:14:19,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:19,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:14:19,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:19,591 INFO L124 PetriNetUnfolderBase]: 479/873 cut-off events. [2024-06-21 19:14:19,591 INFO L125 PetriNetUnfolderBase]: For 37929/37929 co-relation queries the response was YES. [2024-06-21 19:14:19,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6174 conditions, 873 events. 479/873 cut-off events. For 37929/37929 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4302 event pairs, 82 based on Foata normal form. 1/874 useless extension candidates. Maximal degree in co-relation 6083. Up to 638 conditions per place. [2024-06-21 19:14:19,598 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 109 selfloop transitions, 88 changer transitions 0/199 dead transitions. [2024-06-21 19:14:19,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 199 transitions, 3090 flow [2024-06-21 19:14:19,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:14:19,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:14:19,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-21 19:14:19,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36451612903225805 [2024-06-21 19:14:19,599 INFO L175 Difference]: Start difference. First operand has 210 places, 182 transitions, 2283 flow. Second operand 10 states and 113 transitions. [2024-06-21 19:14:19,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 199 transitions, 3090 flow [2024-06-21 19:14:19,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 199 transitions, 2843 flow, removed 42 selfloop flow, removed 7 redundant places. [2024-06-21 19:14:19,698 INFO L231 Difference]: Finished difference. Result has 214 places, 188 transitions, 2332 flow [2024-06-21 19:14:19,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2056, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2332, PETRI_PLACES=214, PETRI_TRANSITIONS=188} [2024-06-21 19:14:19,699 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 184 predicate places. [2024-06-21 19:14:19,699 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 188 transitions, 2332 flow [2024-06-21 19:14:19,699 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 19:14:19,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:19,699 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:19,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-21 19:14:19,699 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 19:14:19,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:19,700 INFO L85 PathProgramCache]: Analyzing trace with hash -176307714, now seen corresponding path program 2 times [2024-06-21 19:14:19,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:19,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788491114] [2024-06-21 19:14:19,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:19,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:19,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:21,286 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 19:14:21,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:21,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788491114] [2024-06-21 19:14:21,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788491114] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:21,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:21,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:14:21,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870588815] [2024-06-21 19:14:21,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:21,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:14:21,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:21,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:14:21,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:14:21,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:14:21,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 188 transitions, 2332 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 19:14:21,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:21,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:14:21,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:21,564 INFO L124 PetriNetUnfolderBase]: 482/878 cut-off events. [2024-06-21 19:14:21,564 INFO L125 PetriNetUnfolderBase]: For 38377/38377 co-relation queries the response was YES. [2024-06-21 19:14:21,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6132 conditions, 878 events. 482/878 cut-off events. For 38377/38377 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4361 event pairs, 122 based on Foata normal form. 1/879 useless extension candidates. Maximal degree in co-relation 6040. Up to 790 conditions per place. [2024-06-21 19:14:21,570 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 166 selfloop transitions, 33 changer transitions 0/201 dead transitions. [2024-06-21 19:14:21,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 201 transitions, 2894 flow [2024-06-21 19:14:21,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:14:21,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:14:21,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 99 transitions. [2024-06-21 19:14:21,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39919354838709675 [2024-06-21 19:14:21,573 INFO L175 Difference]: Start difference. First operand has 214 places, 188 transitions, 2332 flow. Second operand 8 states and 99 transitions. [2024-06-21 19:14:21,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 201 transitions, 2894 flow [2024-06-21 19:14:21,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 201 transitions, 2709 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-21 19:14:21,672 INFO L231 Difference]: Finished difference. Result has 216 places, 192 transitions, 2270 flow [2024-06-21 19:14:21,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2147, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2270, PETRI_PLACES=216, PETRI_TRANSITIONS=192} [2024-06-21 19:14:21,673 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 186 predicate places. [2024-06-21 19:14:21,673 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 192 transitions, 2270 flow [2024-06-21 19:14:21,673 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 19:14:21,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:21,673 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:21,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-21 19:14:21,673 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 19:14:21,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:21,674 INFO L85 PathProgramCache]: Analyzing trace with hash -176307962, now seen corresponding path program 12 times [2024-06-21 19:14:21,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:21,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549513127] [2024-06-21 19:14:21,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:21,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:21,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:22,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:22,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:22,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549513127] [2024-06-21 19:14:22,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549513127] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:22,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:22,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:14:22,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078403306] [2024-06-21 19:14:22,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:22,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:14:22,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:22,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:14:22,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:14:22,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:14:22,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 192 transitions, 2270 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 19:14:22,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:22,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:14:22,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:23,164 INFO L124 PetriNetUnfolderBase]: 480/875 cut-off events. [2024-06-21 19:14:23,164 INFO L125 PetriNetUnfolderBase]: For 38541/38541 co-relation queries the response was YES. [2024-06-21 19:14:23,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5982 conditions, 875 events. 480/875 cut-off events. For 38541/38541 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4320 event pairs, 78 based on Foata normal form. 1/876 useless extension candidates. Maximal degree in co-relation 5890. Up to 641 conditions per place. [2024-06-21 19:14:23,170 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 111 selfloop transitions, 89 changer transitions 0/202 dead transitions. [2024-06-21 19:14:23,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 202 transitions, 2888 flow [2024-06-21 19:14:23,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:14:23,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:14:23,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-21 19:14:23,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3580645161290323 [2024-06-21 19:14:23,171 INFO L175 Difference]: Start difference. First operand has 216 places, 192 transitions, 2270 flow. Second operand 10 states and 111 transitions. [2024-06-21 19:14:23,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 202 transitions, 2888 flow [2024-06-21 19:14:23,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 202 transitions, 2815 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-06-21 19:14:23,270 INFO L231 Difference]: Finished difference. Result has 222 places, 192 transitions, 2380 flow [2024-06-21 19:14:23,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2197, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2380, PETRI_PLACES=222, PETRI_TRANSITIONS=192} [2024-06-21 19:14:23,271 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 192 predicate places. [2024-06-21 19:14:23,271 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 192 transitions, 2380 flow [2024-06-21 19:14:23,271 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 19:14:23,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:23,271 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:23,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-21 19:14:23,271 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 19:14:23,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:23,271 INFO L85 PathProgramCache]: Analyzing trace with hash 51586678, now seen corresponding path program 13 times [2024-06-21 19:14:23,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:23,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690938304] [2024-06-21 19:14:23,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:23,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:23,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:24,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:24,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:24,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690938304] [2024-06-21 19:14:24,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690938304] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:24,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:24,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:14:24,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320625480] [2024-06-21 19:14:24,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:24,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:14:24,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:24,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:14:24,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:14:24,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:14:24,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 192 transitions, 2380 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 19:14:24,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:24,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:14:24,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:24,815 INFO L124 PetriNetUnfolderBase]: 483/880 cut-off events. [2024-06-21 19:14:24,815 INFO L125 PetriNetUnfolderBase]: For 40396/40396 co-relation queries the response was YES. [2024-06-21 19:14:24,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6193 conditions, 880 events. 483/880 cut-off events. For 40396/40396 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 4363 event pairs, 82 based on Foata normal form. 1/881 useless extension candidates. Maximal degree in co-relation 6098. Up to 645 conditions per place. [2024-06-21 19:14:24,822 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 102 selfloop transitions, 101 changer transitions 0/205 dead transitions. [2024-06-21 19:14:24,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 205 transitions, 3060 flow [2024-06-21 19:14:24,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:14:24,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:14:24,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-21 19:14:24,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-21 19:14:24,823 INFO L175 Difference]: Start difference. First operand has 222 places, 192 transitions, 2380 flow. Second operand 10 states and 110 transitions. [2024-06-21 19:14:24,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 205 transitions, 3060 flow [2024-06-21 19:14:24,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 205 transitions, 2884 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-21 19:14:24,928 INFO L231 Difference]: Finished difference. Result has 225 places, 195 transitions, 2463 flow [2024-06-21 19:14:24,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2210, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2463, PETRI_PLACES=225, PETRI_TRANSITIONS=195} [2024-06-21 19:14:24,928 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 195 predicate places. [2024-06-21 19:14:24,929 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 195 transitions, 2463 flow [2024-06-21 19:14:24,929 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 19:14:24,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:24,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:24,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-21 19:14:24,929 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 19:14:24,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:24,929 INFO L85 PathProgramCache]: Analyzing trace with hash 59867398, now seen corresponding path program 14 times [2024-06-21 19:14:24,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:24,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836364084] [2024-06-21 19:14:24,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:24,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:24,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:26,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:26,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:26,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836364084] [2024-06-21 19:14:26,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836364084] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:26,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:26,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:14:26,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645337390] [2024-06-21 19:14:26,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:26,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:14:26,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:26,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:14:26,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:14:26,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:14:26,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 195 transitions, 2463 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 19:14:26,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:26,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:14:26,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:26,426 INFO L124 PetriNetUnfolderBase]: 486/885 cut-off events. [2024-06-21 19:14:26,426 INFO L125 PetriNetUnfolderBase]: For 41930/41930 co-relation queries the response was YES. [2024-06-21 19:14:26,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6300 conditions, 885 events. 486/885 cut-off events. For 41930/41930 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4378 event pairs, 80 based on Foata normal form. 1/886 useless extension candidates. Maximal degree in co-relation 6204. Up to 649 conditions per place. [2024-06-21 19:14:26,436 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 86 selfloop transitions, 118 changer transitions 0/206 dead transitions. [2024-06-21 19:14:26,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 206 transitions, 3035 flow [2024-06-21 19:14:26,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:14:26,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:14:26,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-21 19:14:26,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-21 19:14:26,438 INFO L175 Difference]: Start difference. First operand has 225 places, 195 transitions, 2463 flow. Second operand 10 states and 109 transitions. [2024-06-21 19:14:26,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 206 transitions, 3035 flow [2024-06-21 19:14:26,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 206 transitions, 2834 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-21 19:14:26,547 INFO L231 Difference]: Finished difference. Result has 227 places, 197 transitions, 2545 flow [2024-06-21 19:14:26,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2264, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2545, PETRI_PLACES=227, PETRI_TRANSITIONS=197} [2024-06-21 19:14:26,547 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 197 predicate places. [2024-06-21 19:14:26,547 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 197 transitions, 2545 flow [2024-06-21 19:14:26,547 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 19:14:26,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:26,548 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:26,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-21 19:14:26,548 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 19:14:26,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:26,548 INFO L85 PathProgramCache]: Analyzing trace with hash 59876016, now seen corresponding path program 3 times [2024-06-21 19:14:26,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:26,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836464174] [2024-06-21 19:14:26,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:26,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:26,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:27,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:27,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:27,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836464174] [2024-06-21 19:14:27,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836464174] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:27,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:27,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:14:27,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096535964] [2024-06-21 19:14:27,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:27,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:14:27,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:27,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:14:27,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:14:27,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:14:27,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 197 transitions, 2545 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 19:14:27,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:27,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:14:27,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:28,100 INFO L124 PetriNetUnfolderBase]: 489/890 cut-off events. [2024-06-21 19:14:28,100 INFO L125 PetriNetUnfolderBase]: For 42822/42822 co-relation queries the response was YES. [2024-06-21 19:14:28,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6381 conditions, 890 events. 489/890 cut-off events. For 42822/42822 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4423 event pairs, 167 based on Foata normal form. 1/891 useless extension candidates. Maximal degree in co-relation 6286. Up to 862 conditions per place. [2024-06-21 19:14:28,107 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 189 selfloop transitions, 16 changer transitions 0/207 dead transitions. [2024-06-21 19:14:28,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 207 transitions, 3001 flow [2024-06-21 19:14:28,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:14:28,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:14:28,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 88 transitions. [2024-06-21 19:14:28,108 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3154121863799283 [2024-06-21 19:14:28,108 INFO L175 Difference]: Start difference. First operand has 227 places, 197 transitions, 2545 flow. Second operand 9 states and 88 transitions. [2024-06-21 19:14:28,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 207 transitions, 3001 flow [2024-06-21 19:14:28,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 207 transitions, 2844 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-21 19:14:28,217 INFO L231 Difference]: Finished difference. Result has 230 places, 199 transitions, 2457 flow [2024-06-21 19:14:28,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2388, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2457, PETRI_PLACES=230, PETRI_TRANSITIONS=199} [2024-06-21 19:14:28,217 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 200 predicate places. [2024-06-21 19:14:28,217 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 199 transitions, 2457 flow [2024-06-21 19:14:28,218 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 19:14:28,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:28,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:28,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-21 19:14:28,218 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 19:14:28,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:28,218 INFO L85 PathProgramCache]: Analyzing trace with hash 59867646, now seen corresponding path program 4 times [2024-06-21 19:14:28,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:28,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619967153] [2024-06-21 19:14:28,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:28,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:28,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:29,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:29,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:29,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619967153] [2024-06-21 19:14:29,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619967153] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:29,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:29,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:14:29,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564832623] [2024-06-21 19:14:29,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:29,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:14:29,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:29,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:14:29,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:14:29,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:14:29,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 199 transitions, 2457 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 19:14:29,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:29,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:14:29,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:29,808 INFO L124 PetriNetUnfolderBase]: 492/895 cut-off events. [2024-06-21 19:14:29,808 INFO L125 PetriNetUnfolderBase]: For 44123/44123 co-relation queries the response was YES. [2024-06-21 19:14:29,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6286 conditions, 895 events. 492/895 cut-off events. For 44123/44123 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4453 event pairs, 128 based on Foata normal form. 1/896 useless extension candidates. Maximal degree in co-relation 6190. Up to 805 conditions per place. [2024-06-21 19:14:29,815 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 166 selfloop transitions, 42 changer transitions 0/210 dead transitions. [2024-06-21 19:14:29,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 210 transitions, 3031 flow [2024-06-21 19:14:29,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:14:29,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:14:29,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-21 19:14:29,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3911290322580645 [2024-06-21 19:14:29,817 INFO L175 Difference]: Start difference. First operand has 230 places, 199 transitions, 2457 flow. Second operand 8 states and 97 transitions. [2024-06-21 19:14:29,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 210 transitions, 3031 flow [2024-06-21 19:14:29,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 210 transitions, 2982 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-21 19:14:29,934 INFO L231 Difference]: Finished difference. Result has 231 places, 201 transitions, 2529 flow [2024-06-21 19:14:29,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2408, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2529, PETRI_PLACES=231, PETRI_TRANSITIONS=201} [2024-06-21 19:14:29,934 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 201 predicate places. [2024-06-21 19:14:29,935 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 201 transitions, 2529 flow [2024-06-21 19:14:29,935 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 19:14:29,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:29,935 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:29,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-21 19:14:29,935 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 19:14:29,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:29,936 INFO L85 PathProgramCache]: Analyzing trace with hash 36093658, now seen corresponding path program 15 times [2024-06-21 19:14:29,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:29,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881694746] [2024-06-21 19:14:29,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:29,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:29,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:31,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:31,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:31,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881694746] [2024-06-21 19:14:31,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881694746] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:31,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:31,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:14:31,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147972515] [2024-06-21 19:14:31,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:31,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:14:31,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:31,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:14:31,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:14:31,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:14:31,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 201 transitions, 2529 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 19:14:31,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:31,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:14:31,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:31,712 INFO L124 PetriNetUnfolderBase]: 490/892 cut-off events. [2024-06-21 19:14:31,712 INFO L125 PetriNetUnfolderBase]: For 44658/44658 co-relation queries the response was YES. [2024-06-21 19:14:31,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6281 conditions, 892 events. 490/892 cut-off events. For 44658/44658 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4418 event pairs, 80 based on Foata normal form. 1/893 useless extension candidates. Maximal degree in co-relation 6185. Up to 657 conditions per place. [2024-06-21 19:14:31,718 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 106 selfloop transitions, 102 changer transitions 0/210 dead transitions. [2024-06-21 19:14:31,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 210 transitions, 3073 flow [2024-06-21 19:14:31,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:14:31,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:14:31,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-21 19:14:31,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-21 19:14:31,720 INFO L175 Difference]: Start difference. First operand has 231 places, 201 transitions, 2529 flow. Second operand 10 states and 110 transitions. [2024-06-21 19:14:31,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 210 transitions, 3073 flow [2024-06-21 19:14:31,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 210 transitions, 2962 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-21 19:14:31,838 INFO L231 Difference]: Finished difference. Result has 236 places, 201 transitions, 2627 flow [2024-06-21 19:14:31,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2418, PETRI_DIFFERENCE_MINUEND_PLACES=226, 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=10, PETRI_FLOW=2627, PETRI_PLACES=236, PETRI_TRANSITIONS=201} [2024-06-21 19:14:31,838 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 206 predicate places. [2024-06-21 19:14:31,838 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 201 transitions, 2627 flow [2024-06-21 19:14:31,839 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 19:14:31,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:31,839 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:31,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-21 19:14:31,839 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 19:14:31,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:31,839 INFO L85 PathProgramCache]: Analyzing trace with hash 51593436, now seen corresponding path program 5 times [2024-06-21 19:14:31,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:31,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475031744] [2024-06-21 19:14:31,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:31,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:31,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:33,188 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 19:14:33,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:33,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475031744] [2024-06-21 19:14:33,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475031744] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:33,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:33,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:14:33,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287674565] [2024-06-21 19:14:33,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:33,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:14:33,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:33,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:14:33,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:14:33,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:14:33,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 201 transitions, 2627 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 19:14:33,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:33,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:14:33,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:33,478 INFO L124 PetriNetUnfolderBase]: 488/889 cut-off events. [2024-06-21 19:14:33,478 INFO L125 PetriNetUnfolderBase]: For 44342/44342 co-relation queries the response was YES. [2024-06-21 19:14:33,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6325 conditions, 889 events. 488/889 cut-off events. For 44342/44342 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4425 event pairs, 122 based on Foata normal form. 1/890 useless extension candidates. Maximal degree in co-relation 6227. Up to 800 conditions per place. [2024-06-21 19:14:33,485 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 168 selfloop transitions, 39 changer transitions 0/209 dead transitions. [2024-06-21 19:14:33,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 209 transitions, 3059 flow [2024-06-21 19:14:33,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:14:33,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:14:33,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-21 19:14:33,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3911290322580645 [2024-06-21 19:14:33,485 INFO L175 Difference]: Start difference. First operand has 236 places, 201 transitions, 2627 flow. Second operand 8 states and 97 transitions. [2024-06-21 19:14:33,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 209 transitions, 3059 flow [2024-06-21 19:14:33,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 209 transitions, 2785 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-21 19:14:33,600 INFO L231 Difference]: Finished difference. Result has 236 places, 201 transitions, 2436 flow [2024-06-21 19:14:33,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2353, PETRI_DIFFERENCE_MINUEND_PLACES=228, 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=2436, PETRI_PLACES=236, PETRI_TRANSITIONS=201} [2024-06-21 19:14:33,601 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 206 predicate places. [2024-06-21 19:14:33,601 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 201 transitions, 2436 flow [2024-06-21 19:14:33,602 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 19:14:33,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:33,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:33,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-21 19:14:33,602 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 19:14:33,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:33,602 INFO L85 PathProgramCache]: Analyzing trace with hash 60175228, now seen corresponding path program 1 times [2024-06-21 19:14:33,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:33,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933771865] [2024-06-21 19:14:33,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:33,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:33,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:35,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:35,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:35,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933771865] [2024-06-21 19:14:35,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933771865] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:35,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:35,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:14:35,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765054750] [2024-06-21 19:14:35,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:35,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:14:35,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:35,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:14:35,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:14:35,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:14:35,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 201 transitions, 2436 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 19:14:35,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:35,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:14:35,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:35,669 INFO L124 PetriNetUnfolderBase]: 485/885 cut-off events. [2024-06-21 19:14:35,669 INFO L125 PetriNetUnfolderBase]: For 43958/43958 co-relation queries the response was YES. [2024-06-21 19:14:35,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6040 conditions, 885 events. 485/885 cut-off events. For 43958/43958 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4398 event pairs, 160 based on Foata normal form. 2/887 useless extension candidates. Maximal degree in co-relation 5942. Up to 850 conditions per place. [2024-06-21 19:14:35,676 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 192 selfloop transitions, 17 changer transitions 0/211 dead transitions. [2024-06-21 19:14:35,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 211 transitions, 2876 flow [2024-06-21 19:14:35,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:14:35,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:14:35,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 100 transitions. [2024-06-21 19:14:35,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2932551319648094 [2024-06-21 19:14:35,677 INFO L175 Difference]: Start difference. First operand has 236 places, 201 transitions, 2436 flow. Second operand 11 states and 100 transitions. [2024-06-21 19:14:35,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 211 transitions, 2876 flow [2024-06-21 19:14:35,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 211 transitions, 2766 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-21 19:14:35,779 INFO L231 Difference]: Finished difference. Result has 239 places, 201 transitions, 2364 flow [2024-06-21 19:14:35,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2326, PETRI_DIFFERENCE_MINUEND_PLACES=228, 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=2364, PETRI_PLACES=239, PETRI_TRANSITIONS=201} [2024-06-21 19:14:35,779 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 209 predicate places. [2024-06-21 19:14:35,780 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 201 transitions, 2364 flow [2024-06-21 19:14:35,780 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 19:14:35,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:35,780 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:35,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-21 19:14:35,780 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 19:14:35,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:35,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1659289175, now seen corresponding path program 1 times [2024-06-21 19:14:35,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:35,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585211815] [2024-06-21 19:14:35,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:35,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:35,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:36,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:36,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:36,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585211815] [2024-06-21 19:14:36,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585211815] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:36,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:36,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:14:36,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451006270] [2024-06-21 19:14:36,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:36,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:14:36,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:36,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:14:36,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:14:36,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:14:36,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 201 transitions, 2364 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 19:14:36,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:36,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:14:36,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:37,277 INFO L124 PetriNetUnfolderBase]: 491/894 cut-off events. [2024-06-21 19:14:37,277 INFO L125 PetriNetUnfolderBase]: For 44873/44873 co-relation queries the response was YES. [2024-06-21 19:14:37,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6073 conditions, 894 events. 491/894 cut-off events. For 44873/44873 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4433 event pairs, 101 based on Foata normal form. 2/896 useless extension candidates. Maximal degree in co-relation 5973. Up to 794 conditions per place. [2024-06-21 19:14:37,284 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 178 selfloop transitions, 42 changer transitions 0/222 dead transitions. [2024-06-21 19:14:37,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 222 transitions, 2941 flow [2024-06-21 19:14:37,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:14:37,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:14:37,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-21 19:14:37,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34516129032258064 [2024-06-21 19:14:37,285 INFO L175 Difference]: Start difference. First operand has 239 places, 201 transitions, 2364 flow. Second operand 10 states and 107 transitions. [2024-06-21 19:14:37,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 222 transitions, 2941 flow [2024-06-21 19:14:37,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 222 transitions, 2901 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-21 19:14:37,428 INFO L231 Difference]: Finished difference. Result has 241 places, 208 transitions, 2541 flow [2024-06-21 19:14:37,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2324, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2541, PETRI_PLACES=241, PETRI_TRANSITIONS=208} [2024-06-21 19:14:37,429 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 211 predicate places. [2024-06-21 19:14:37,429 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 208 transitions, 2541 flow [2024-06-21 19:14:37,429 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 19:14:37,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:37,429 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:37,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-21 19:14:37,430 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 19:14:37,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:37,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1363158796, now seen corresponding path program 1 times [2024-06-21 19:14:37,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:37,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167270622] [2024-06-21 19:14:37,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:37,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:37,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:38,712 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 19:14:38,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:38,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167270622] [2024-06-21 19:14:38,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167270622] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:38,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:38,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:14:38,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012356724] [2024-06-21 19:14:38,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:38,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:14:38,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:38,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:14:38,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:14:38,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:14:38,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 208 transitions, 2541 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:38,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:38,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:14:38,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:39,009 INFO L124 PetriNetUnfolderBase]: 503/915 cut-off events. [2024-06-21 19:14:39,009 INFO L125 PetriNetUnfolderBase]: For 49049/49049 co-relation queries the response was YES. [2024-06-21 19:14:39,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6452 conditions, 915 events. 503/915 cut-off events. For 49049/49049 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4572 event pairs, 67 based on Foata normal form. 2/917 useless extension candidates. Maximal degree in co-relation 6350. Up to 772 conditions per place. [2024-06-21 19:14:39,016 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 177 selfloop transitions, 51 changer transitions 0/230 dead transitions. [2024-06-21 19:14:39,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 230 transitions, 3263 flow [2024-06-21 19:14:39,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:14:39,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:14:39,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-21 19:14:39,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3978494623655914 [2024-06-21 19:14:39,017 INFO L175 Difference]: Start difference. First operand has 241 places, 208 transitions, 2541 flow. Second operand 9 states and 111 transitions. [2024-06-21 19:14:39,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 230 transitions, 3263 flow [2024-06-21 19:14:39,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 230 transitions, 3151 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-21 19:14:39,140 INFO L231 Difference]: Finished difference. Result has 246 places, 215 transitions, 2668 flow [2024-06-21 19:14:39,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2429, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2668, PETRI_PLACES=246, PETRI_TRANSITIONS=215} [2024-06-21 19:14:39,140 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 216 predicate places. [2024-06-21 19:14:39,141 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 215 transitions, 2668 flow [2024-06-21 19:14:39,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:39,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:39,141 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:39,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-21 19:14:39,141 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 19:14:39,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:39,141 INFO L85 PathProgramCache]: Analyzing trace with hash -401025443, now seen corresponding path program 2 times [2024-06-21 19:14:39,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:39,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58201174] [2024-06-21 19:14:39,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:39,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:39,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:40,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:40,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:40,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58201174] [2024-06-21 19:14:40,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58201174] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:40,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:40,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:14:40,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060022617] [2024-06-21 19:14:40,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:40,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:14:40,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:40,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:14:40,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:14:40,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:14:40,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 215 transitions, 2668 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 19:14:40,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:40,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:14:40,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:40,629 INFO L124 PetriNetUnfolderBase]: 504/916 cut-off events. [2024-06-21 19:14:40,629 INFO L125 PetriNetUnfolderBase]: For 49600/49600 co-relation queries the response was YES. [2024-06-21 19:14:40,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6573 conditions, 916 events. 504/916 cut-off events. For 49600/49600 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4571 event pairs, 65 based on Foata normal form. 2/918 useless extension candidates. Maximal degree in co-relation 6469. Up to 824 conditions per place. [2024-06-21 19:14:40,636 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 192 selfloop transitions, 37 changer transitions 0/231 dead transitions. [2024-06-21 19:14:40,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 231 transitions, 3220 flow [2024-06-21 19:14:40,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:14:40,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:14:40,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-21 19:14:40,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36917562724014336 [2024-06-21 19:14:40,637 INFO L175 Difference]: Start difference. First operand has 246 places, 215 transitions, 2668 flow. Second operand 9 states and 103 transitions. [2024-06-21 19:14:40,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 231 transitions, 3220 flow [2024-06-21 19:14:40,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 231 transitions, 3152 flow, removed 27 selfloop flow, removed 2 redundant places. [2024-06-21 19:14:40,768 INFO L231 Difference]: Finished difference. Result has 254 places, 218 transitions, 2757 flow [2024-06-21 19:14:40,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2614, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2757, PETRI_PLACES=254, PETRI_TRANSITIONS=218} [2024-06-21 19:14:40,768 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 224 predicate places. [2024-06-21 19:14:40,768 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 218 transitions, 2757 flow [2024-06-21 19:14:40,769 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 19:14:40,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:40,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:40,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-21 19:14:40,769 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 19:14:40,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:40,770 INFO L85 PathProgramCache]: Analyzing trace with hash -411722027, now seen corresponding path program 3 times [2024-06-21 19:14:40,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:40,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282103964] [2024-06-21 19:14:40,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:40,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:40,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:42,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:42,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:42,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282103964] [2024-06-21 19:14:42,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282103964] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:42,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:42,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:14:42,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843676345] [2024-06-21 19:14:42,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:42,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:14:42,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:42,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:14:42,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:14:42,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:14:42,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 218 transitions, 2757 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 19:14:42,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:42,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:14:42,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:42,722 INFO L124 PetriNetUnfolderBase]: 515/934 cut-off events. [2024-06-21 19:14:42,723 INFO L125 PetriNetUnfolderBase]: For 52048/52048 co-relation queries the response was YES. [2024-06-21 19:14:42,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6835 conditions, 934 events. 515/934 cut-off events. For 52048/52048 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4664 event pairs, 69 based on Foata normal form. 1/935 useless extension candidates. Maximal degree in co-relation 6728. Up to 752 conditions per place. [2024-06-21 19:14:42,730 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 177 selfloop transitions, 59 changer transitions 0/238 dead transitions. [2024-06-21 19:14:42,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 238 transitions, 3509 flow [2024-06-21 19:14:42,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:14:42,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:14:42,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-21 19:14:42,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36451612903225805 [2024-06-21 19:14:42,731 INFO L175 Difference]: Start difference. First operand has 254 places, 218 transitions, 2757 flow. Second operand 10 states and 113 transitions. [2024-06-21 19:14:42,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 238 transitions, 3509 flow [2024-06-21 19:14:42,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 238 transitions, 3412 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-21 19:14:42,872 INFO L231 Difference]: Finished difference. Result has 260 places, 225 transitions, 2936 flow [2024-06-21 19:14:42,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2660, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2936, PETRI_PLACES=260, PETRI_TRANSITIONS=225} [2024-06-21 19:14:42,873 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 230 predicate places. [2024-06-21 19:14:42,873 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 225 transitions, 2936 flow [2024-06-21 19:14:42,873 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 19:14:42,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:42,873 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:42,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-21 19:14:42,873 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 19:14:42,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:42,874 INFO L85 PathProgramCache]: Analyzing trace with hash -411572080, now seen corresponding path program 2 times [2024-06-21 19:14:42,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:42,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430042452] [2024-06-21 19:14:42,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:42,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:42,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:44,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:44,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:44,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430042452] [2024-06-21 19:14:44,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430042452] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:44,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:44,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:14:44,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138328913] [2024-06-21 19:14:44,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:44,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:14:44,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:44,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:14:44,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:14:44,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:14:44,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 225 transitions, 2936 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 19:14:44,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:44,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:14:44,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:44,660 INFO L124 PetriNetUnfolderBase]: 550/991 cut-off events. [2024-06-21 19:14:44,660 INFO L125 PetriNetUnfolderBase]: For 65469/65469 co-relation queries the response was YES. [2024-06-21 19:14:44,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7714 conditions, 991 events. 550/991 cut-off events. For 65469/65469 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 4980 event pairs, 68 based on Foata normal form. 2/993 useless extension candidates. Maximal degree in co-relation 7604. Up to 657 conditions per place. [2024-06-21 19:14:44,668 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 179 selfloop transitions, 73 changer transitions 0/254 dead transitions. [2024-06-21 19:14:44,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 254 transitions, 4084 flow [2024-06-21 19:14:44,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:14:44,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:14:44,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-21 19:14:44,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4265232974910394 [2024-06-21 19:14:44,670 INFO L175 Difference]: Start difference. First operand has 260 places, 225 transitions, 2936 flow. Second operand 9 states and 119 transitions. [2024-06-21 19:14:44,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 254 transitions, 4084 flow [2024-06-21 19:14:44,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 254 transitions, 3931 flow, removed 46 selfloop flow, removed 6 redundant places. [2024-06-21 19:14:44,839 INFO L231 Difference]: Finished difference. Result has 266 places, 236 transitions, 3153 flow [2024-06-21 19:14:44,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2799, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3153, PETRI_PLACES=266, PETRI_TRANSITIONS=236} [2024-06-21 19:14:44,839 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 236 predicate places. [2024-06-21 19:14:44,839 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 236 transitions, 3153 flow [2024-06-21 19:14:44,839 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 19:14:44,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:44,840 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:44,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-21 19:14:44,840 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 19:14:44,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:44,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1693647133, now seen corresponding path program 4 times [2024-06-21 19:14:44,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:44,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189426531] [2024-06-21 19:14:44,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:44,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:44,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:46,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:46,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:46,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189426531] [2024-06-21 19:14:46,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189426531] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:46,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:46,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:14:46,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383395334] [2024-06-21 19:14:46,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:46,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:14:46,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:46,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:14:46,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:14:46,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:14:46,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 236 transitions, 3153 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 19:14:46,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:46,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:14:46,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:46,641 INFO L124 PetriNetUnfolderBase]: 553/996 cut-off events. [2024-06-21 19:14:46,641 INFO L125 PetriNetUnfolderBase]: For 63760/63760 co-relation queries the response was YES. [2024-06-21 19:14:46,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7911 conditions, 996 events. 553/996 cut-off events. For 63760/63760 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 5014 event pairs, 66 based on Foata normal form. 1/997 useless extension candidates. Maximal degree in co-relation 7798. Up to 861 conditions per place. [2024-06-21 19:14:46,651 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 189 selfloop transitions, 60 changer transitions 0/251 dead transitions. [2024-06-21 19:14:46,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 251 transitions, 3718 flow [2024-06-21 19:14:46,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:14:46,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:14:46,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-21 19:14:46,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36129032258064514 [2024-06-21 19:14:46,652 INFO L175 Difference]: Start difference. First operand has 266 places, 236 transitions, 3153 flow. Second operand 10 states and 112 transitions. [2024-06-21 19:14:46,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 251 transitions, 3718 flow [2024-06-21 19:14:46,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 251 transitions, 3638 flow, removed 30 selfloop flow, removed 2 redundant places. [2024-06-21 19:14:46,847 INFO L231 Difference]: Finished difference. Result has 274 places, 238 transitions, 3237 flow [2024-06-21 19:14:46,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3073, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3237, PETRI_PLACES=274, PETRI_TRANSITIONS=238} [2024-06-21 19:14:46,847 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 244 predicate places. [2024-06-21 19:14:46,848 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 238 transitions, 3237 flow [2024-06-21 19:14:46,848 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 19:14:46,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:46,848 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:46,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-21 19:14:46,848 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 19:14:46,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:46,848 INFO L85 PathProgramCache]: Analyzing trace with hash -406209700, now seen corresponding path program 3 times [2024-06-21 19:14:46,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:46,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768372785] [2024-06-21 19:14:46,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:46,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:46,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:48,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:48,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:48,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768372785] [2024-06-21 19:14:48,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768372785] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:48,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:48,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:14:48,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695902846] [2024-06-21 19:14:48,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:48,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:14:48,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:48,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:14:48,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:14:48,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:14:48,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 238 transitions, 3237 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 19:14:48,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:48,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:14:48,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:48,655 INFO L124 PetriNetUnfolderBase]: 570/1024 cut-off events. [2024-06-21 19:14:48,655 INFO L125 PetriNetUnfolderBase]: For 70316/70316 co-relation queries the response was YES. [2024-06-21 19:14:48,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8234 conditions, 1024 events. 570/1024 cut-off events. For 70316/70316 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 5171 event pairs, 66 based on Foata normal form. 2/1026 useless extension candidates. Maximal degree in co-relation 8119. Up to 673 conditions per place. [2024-06-21 19:14:48,665 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 172 selfloop transitions, 90 changer transitions 0/264 dead transitions. [2024-06-21 19:14:48,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 264 transitions, 4386 flow [2024-06-21 19:14:48,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:14:48,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:14:48,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-21 19:14:48,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4229390681003584 [2024-06-21 19:14:48,666 INFO L175 Difference]: Start difference. First operand has 274 places, 238 transitions, 3237 flow. Second operand 9 states and 118 transitions. [2024-06-21 19:14:48,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 264 transitions, 4386 flow [2024-06-21 19:14:48,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 264 transitions, 4247 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-21 19:14:48,872 INFO L231 Difference]: Finished difference. Result has 276 places, 246 transitions, 3440 flow [2024-06-21 19:14:48,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3098, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3440, PETRI_PLACES=276, PETRI_TRANSITIONS=246} [2024-06-21 19:14:48,873 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 246 predicate places. [2024-06-21 19:14:48,873 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 246 transitions, 3440 flow [2024-06-21 19:14:48,873 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 19:14:48,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:48,873 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:48,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-21 19:14:48,874 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 19:14:48,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:48,874 INFO L85 PathProgramCache]: Analyzing trace with hash -406215497, now seen corresponding path program 5 times [2024-06-21 19:14:48,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:48,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233732237] [2024-06-21 19:14:48,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:48,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:48,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:50,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:50,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:50,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233732237] [2024-06-21 19:14:50,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233732237] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:50,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:50,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:14:50,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652695543] [2024-06-21 19:14:50,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:50,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:14:50,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:50,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:14:50,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:14:50,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:14:50,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 246 transitions, 3440 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 19:14:50,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:50,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:14:50,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:50,818 INFO L124 PetriNetUnfolderBase]: 568/1021 cut-off events. [2024-06-21 19:14:50,818 INFO L125 PetriNetUnfolderBase]: For 69344/69344 co-relation queries the response was YES. [2024-06-21 19:14:50,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8292 conditions, 1021 events. 568/1021 cut-off events. For 69344/69344 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 5155 event pairs, 69 based on Foata normal form. 1/1022 useless extension candidates. Maximal degree in co-relation 8175. Up to 876 conditions per place. [2024-06-21 19:14:50,827 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 193 selfloop transitions, 66 changer transitions 0/261 dead transitions. [2024-06-21 19:14:50,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 261 transitions, 4120 flow [2024-06-21 19:14:50,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:14:50,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:14:50,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-21 19:14:50,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35777126099706746 [2024-06-21 19:14:50,828 INFO L175 Difference]: Start difference. First operand has 276 places, 246 transitions, 3440 flow. Second operand 11 states and 122 transitions. [2024-06-21 19:14:50,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 261 transitions, 4120 flow [2024-06-21 19:14:51,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 261 transitions, 4001 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-21 19:14:51,035 INFO L231 Difference]: Finished difference. Result has 282 places, 246 transitions, 3461 flow [2024-06-21 19:14:51,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3321, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3461, PETRI_PLACES=282, PETRI_TRANSITIONS=246} [2024-06-21 19:14:51,036 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 252 predicate places. [2024-06-21 19:14:51,036 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 246 transitions, 3461 flow [2024-06-21 19:14:51,036 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 19:14:51,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:51,036 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:51,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-21 19:14:51,037 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 19:14:51,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:51,037 INFO L85 PathProgramCache]: Analyzing trace with hash -406007890, now seen corresponding path program 4 times [2024-06-21 19:14:51,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:51,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531236502] [2024-06-21 19:14:51,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:51,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:51,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:52,448 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 19:14:52,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:52,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531236502] [2024-06-21 19:14:52,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531236502] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:52,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:52,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:14:52,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883670696] [2024-06-21 19:14:52,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:52,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:14:52,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:52,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:14:52,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:14:52,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:14:52,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 246 transitions, 3461 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 19:14:52,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:52,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:14:52,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:52,802 INFO L124 PetriNetUnfolderBase]: 575/1033 cut-off events. [2024-06-21 19:14:52,802 INFO L125 PetriNetUnfolderBase]: For 73338/73338 co-relation queries the response was YES. [2024-06-21 19:14:52,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8345 conditions, 1033 events. 575/1033 cut-off events. For 73338/73338 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 5240 event pairs, 66 based on Foata normal form. 2/1035 useless extension candidates. Maximal degree in co-relation 8229. Up to 680 conditions per place. [2024-06-21 19:14:52,811 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 158 selfloop transitions, 105 changer transitions 0/265 dead transitions. [2024-06-21 19:14:52,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 265 transitions, 4387 flow [2024-06-21 19:14:52,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:14:52,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:14:52,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-21 19:14:52,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4157706093189964 [2024-06-21 19:14:52,813 INFO L175 Difference]: Start difference. First operand has 282 places, 246 transitions, 3461 flow. Second operand 9 states and 116 transitions. [2024-06-21 19:14:52,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 265 transitions, 4387 flow [2024-06-21 19:14:53,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 265 transitions, 4239 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-21 19:14:53,033 INFO L231 Difference]: Finished difference. Result has 284 places, 249 transitions, 3597 flow [2024-06-21 19:14:53,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3313, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3597, PETRI_PLACES=284, PETRI_TRANSITIONS=249} [2024-06-21 19:14:53,033 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 254 predicate places. [2024-06-21 19:14:53,034 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 249 transitions, 3597 flow [2024-06-21 19:14:53,034 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 19:14:53,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:53,034 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:53,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-21 19:14:53,034 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 19:14:53,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:53,034 INFO L85 PathProgramCache]: Analyzing trace with hash -406008107, now seen corresponding path program 6 times [2024-06-21 19:14:53,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:53,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061818285] [2024-06-21 19:14:53,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:53,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:53,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:54,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:54,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:54,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061818285] [2024-06-21 19:14:54,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061818285] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:54,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:54,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:14:54,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471185010] [2024-06-21 19:14:54,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:54,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:14:54,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:54,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:14:54,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:14:54,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:14:54,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 249 transitions, 3597 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 19:14:54,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:54,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:14:54,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:54,963 INFO L124 PetriNetUnfolderBase]: 573/1030 cut-off events. [2024-06-21 19:14:54,963 INFO L125 PetriNetUnfolderBase]: For 72069/72069 co-relation queries the response was YES. [2024-06-21 19:14:54,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8417 conditions, 1030 events. 573/1030 cut-off events. For 72069/72069 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 5236 event pairs, 65 based on Foata normal form. 1/1031 useless extension candidates. Maximal degree in co-relation 8299. Up to 895 conditions per place. [2024-06-21 19:14:54,973 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 194 selfloop transitions, 66 changer transitions 0/262 dead transitions. [2024-06-21 19:14:54,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 262 transitions, 4149 flow [2024-06-21 19:14:54,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:14:54,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:14:54,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-21 19:14:54,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36129032258064514 [2024-06-21 19:14:54,974 INFO L175 Difference]: Start difference. First operand has 284 places, 249 transitions, 3597 flow. Second operand 10 states and 112 transitions. [2024-06-21 19:14:54,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 262 transitions, 4149 flow [2024-06-21 19:14:55,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 262 transitions, 3923 flow, removed 33 selfloop flow, removed 6 redundant places. [2024-06-21 19:14:55,191 INFO L231 Difference]: Finished difference. Result has 288 places, 249 transitions, 3508 flow [2024-06-21 19:14:55,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3371, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3508, PETRI_PLACES=288, PETRI_TRANSITIONS=249} [2024-06-21 19:14:55,192 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 258 predicate places. [2024-06-21 19:14:55,192 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 249 transitions, 3508 flow [2024-06-21 19:14:55,192 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 19:14:55,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:55,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:55,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-21 19:14:55,192 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 19:14:55,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:55,193 INFO L85 PathProgramCache]: Analyzing trace with hash -406000450, now seen corresponding path program 5 times [2024-06-21 19:14:55,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:55,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603184937] [2024-06-21 19:14:55,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:55,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:55,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:56,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:56,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:56,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603184937] [2024-06-21 19:14:56,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603184937] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:56,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:56,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:14:56,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980375435] [2024-06-21 19:14:56,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:56,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:14:56,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:56,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:14:56,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:14:56,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:14:56,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 249 transitions, 3508 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 19:14:56,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:56,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:14:56,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:56,925 INFO L124 PetriNetUnfolderBase]: 569/1024 cut-off events. [2024-06-21 19:14:56,925 INFO L125 PetriNetUnfolderBase]: For 71098/71098 co-relation queries the response was YES. [2024-06-21 19:14:56,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8084 conditions, 1024 events. 569/1024 cut-off events. For 71098/71098 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 5192 event pairs, 65 based on Foata normal form. 2/1026 useless extension candidates. Maximal degree in co-relation 7967. Up to 676 conditions per place. [2024-06-21 19:14:56,934 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 139 selfloop transitions, 124 changer transitions 0/265 dead transitions. [2024-06-21 19:14:56,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 265 transitions, 4384 flow [2024-06-21 19:14:56,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:14:56,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:14:56,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-21 19:14:56,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4121863799283154 [2024-06-21 19:14:56,936 INFO L175 Difference]: Start difference. First operand has 288 places, 249 transitions, 3508 flow. Second operand 9 states and 115 transitions. [2024-06-21 19:14:56,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 265 transitions, 4384 flow [2024-06-21 19:14:57,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 265 transitions, 4245 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-21 19:14:57,157 INFO L231 Difference]: Finished difference. Result has 289 places, 250 transitions, 3642 flow [2024-06-21 19:14:57,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3373, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3642, PETRI_PLACES=289, PETRI_TRANSITIONS=250} [2024-06-21 19:14:57,157 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 259 predicate places. [2024-06-21 19:14:57,157 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 250 transitions, 3642 flow [2024-06-21 19:14:57,157 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 19:14:57,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:57,158 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:57,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-21 19:14:57,158 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 19:14:57,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:57,158 INFO L85 PathProgramCache]: Analyzing trace with hash -406000171, now seen corresponding path program 1 times [2024-06-21 19:14:57,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:57,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570378238] [2024-06-21 19:14:57,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:57,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:57,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:58,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:58,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:58,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570378238] [2024-06-21 19:14:58,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570378238] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:58,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:58,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:14:58,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540667090] [2024-06-21 19:14:58,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:58,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:14:58,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:58,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:14:58,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:14:59,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:14:59,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 250 transitions, 3642 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 19:14:59,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:59,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:14:59,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:59,362 INFO L124 PetriNetUnfolderBase]: 572/1029 cut-off events. [2024-06-21 19:14:59,362 INFO L125 PetriNetUnfolderBase]: For 69446/69446 co-relation queries the response was YES. [2024-06-21 19:14:59,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8268 conditions, 1029 events. 572/1029 cut-off events. For 69446/69446 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5240 event pairs, 117 based on Foata normal form. 1/1030 useless extension candidates. Maximal degree in co-relation 8150. Up to 979 conditions per place. [2024-06-21 19:14:59,372 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 235 selfloop transitions, 26 changer transitions 0/263 dead transitions. [2024-06-21 19:14:59,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 263 transitions, 4214 flow [2024-06-21 19:14:59,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:14:59,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:14:59,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-21 19:14:59,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-21 19:14:59,373 INFO L175 Difference]: Start difference. First operand has 289 places, 250 transitions, 3642 flow. Second operand 10 states and 108 transitions. [2024-06-21 19:14:59,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 263 transitions, 4214 flow [2024-06-21 19:14:59,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 263 transitions, 4042 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-21 19:14:59,596 INFO L231 Difference]: Finished difference. Result has 294 places, 252 transitions, 3555 flow [2024-06-21 19:14:59,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3470, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3555, PETRI_PLACES=294, PETRI_TRANSITIONS=252} [2024-06-21 19:14:59,597 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 264 predicate places. [2024-06-21 19:14:59,597 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 252 transitions, 3555 flow [2024-06-21 19:14:59,597 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 19:14:59,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:59,597 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:59,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-21 19:14:59,597 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 19:14:59,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:59,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1045025741, now seen corresponding path program 7 times [2024-06-21 19:14:59,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:59,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548848671] [2024-06-21 19:14:59,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:59,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:59,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:15:00,796 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 19:15:00,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:15:00,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548848671] [2024-06-21 19:15:00,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548848671] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:15:00,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:15:00,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:15:00,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156791048] [2024-06-21 19:15:00,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:15:00,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:15:00,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:15:00,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:15:00,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:15:00,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:15:00,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 252 transitions, 3555 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 19:15:00,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:15:00,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:15:00,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:15:01,325 INFO L124 PetriNetUnfolderBase]: 567/1021 cut-off events. [2024-06-21 19:15:01,325 INFO L125 PetriNetUnfolderBase]: For 68555/68555 co-relation queries the response was YES. [2024-06-21 19:15:01,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7970 conditions, 1021 events. 567/1021 cut-off events. For 68555/68555 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5198 event pairs, 66 based on Foata normal form. 2/1023 useless extension candidates. Maximal degree in co-relation 7850. Up to 929 conditions per place. [2024-06-21 19:15:01,333 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 222 selfloop transitions, 38 changer transitions 0/262 dead transitions. [2024-06-21 19:15:01,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 262 transitions, 4101 flow [2024-06-21 19:15:01,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:15:01,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:15:01,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-21 19:15:01,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-21 19:15:01,334 INFO L175 Difference]: Start difference. First operand has 294 places, 252 transitions, 3555 flow. Second operand 10 states and 105 transitions. [2024-06-21 19:15:01,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 262 transitions, 4101 flow [2024-06-21 19:15:01,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 262 transitions, 4014 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-21 19:15:01,566 INFO L231 Difference]: Finished difference. Result has 296 places, 252 transitions, 3554 flow [2024-06-21 19:15:01,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3468, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3554, PETRI_PLACES=296, PETRI_TRANSITIONS=252} [2024-06-21 19:15:01,567 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 266 predicate places. [2024-06-21 19:15:01,567 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 252 transitions, 3554 flow [2024-06-21 19:15:01,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:01,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:15:01,567 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:15:01,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-21 19:15:01,567 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 19:15:01,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:15:01,568 INFO L85 PathProgramCache]: Analyzing trace with hash 416490445, now seen corresponding path program 8 times [2024-06-21 19:15:01,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:15:01,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380518962] [2024-06-21 19:15:01,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:15:01,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:15:01,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:15:02,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:15:02,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:15:02,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380518962] [2024-06-21 19:15:02,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380518962] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:15:02,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:15:02,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:15:02,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411706445] [2024-06-21 19:15:02,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:15:02,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:15:02,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:15:02,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:15:02,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:15:03,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:15:03,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 252 transitions, 3554 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 19:15:03,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:15:03,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:15:03,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:15:03,368 INFO L124 PetriNetUnfolderBase]: 564/1016 cut-off events. [2024-06-21 19:15:03,368 INFO L125 PetriNetUnfolderBase]: For 66073/66073 co-relation queries the response was YES. [2024-06-21 19:15:03,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7892 conditions, 1016 events. 564/1016 cut-off events. For 66073/66073 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5185 event pairs, 66 based on Foata normal form. 1/1017 useless extension candidates. Maximal degree in co-relation 7771. Up to 871 conditions per place. [2024-06-21 19:15:03,376 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 201 selfloop transitions, 59 changer transitions 0/262 dead transitions. [2024-06-21 19:15:03,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 262 transitions, 4234 flow [2024-06-21 19:15:03,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:15:03,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:15:03,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-21 19:15:03,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-21 19:15:03,377 INFO L175 Difference]: Start difference. First operand has 296 places, 252 transitions, 3554 flow. Second operand 10 states and 110 transitions. [2024-06-21 19:15:03,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 262 transitions, 4234 flow [2024-06-21 19:15:03,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 262 transitions, 4116 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-21 19:15:03,596 INFO L231 Difference]: Finished difference. Result has 297 places, 252 transitions, 3560 flow [2024-06-21 19:15:03,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3436, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3560, PETRI_PLACES=297, PETRI_TRANSITIONS=252} [2024-06-21 19:15:03,596 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 267 predicate places. [2024-06-21 19:15:03,596 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 252 transitions, 3560 flow [2024-06-21 19:15:03,597 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 19:15:03,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:15:03,597 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:15:03,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-21 19:15:03,597 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 19:15:03,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:15:03,597 INFO L85 PathProgramCache]: Analyzing trace with hash 416288635, now seen corresponding path program 9 times [2024-06-21 19:15:03,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:15:03,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943344674] [2024-06-21 19:15:03,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:15:03,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:15:03,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:15:04,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:15:04,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:15:04,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943344674] [2024-06-21 19:15:04,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943344674] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:15:04,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:15:04,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:15:04,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268183456] [2024-06-21 19:15:04,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:15:04,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:15:04,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:15:04,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:15:04,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:15:04,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:15:04,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 252 transitions, 3560 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 19:15:04,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:15:04,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:15:04,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:15:05,298 INFO L124 PetriNetUnfolderBase]: 561/1011 cut-off events. [2024-06-21 19:15:05,298 INFO L125 PetriNetUnfolderBase]: For 65263/65263 co-relation queries the response was YES. [2024-06-21 19:15:05,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7807 conditions, 1011 events. 561/1011 cut-off events. For 65263/65263 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5142 event pairs, 68 based on Foata normal form. 1/1012 useless extension candidates. Maximal degree in co-relation 7688. Up to 867 conditions per place. [2024-06-21 19:15:05,305 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 206 selfloop transitions, 54 changer transitions 0/262 dead transitions. [2024-06-21 19:15:05,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 262 transitions, 4242 flow [2024-06-21 19:15:05,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:15:05,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:15:05,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-21 19:15:05,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3580645161290323 [2024-06-21 19:15:05,306 INFO L175 Difference]: Start difference. First operand has 297 places, 252 transitions, 3560 flow. Second operand 10 states and 111 transitions. [2024-06-21 19:15:05,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 262 transitions, 4242 flow [2024-06-21 19:15:05,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 262 transitions, 4049 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-21 19:15:05,538 INFO L231 Difference]: Finished difference. Result has 298 places, 252 transitions, 3484 flow [2024-06-21 19:15:05,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3369, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3484, PETRI_PLACES=298, PETRI_TRANSITIONS=252} [2024-06-21 19:15:05,539 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 268 predicate places. [2024-06-21 19:15:05,539 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 252 transitions, 3484 flow [2024-06-21 19:15:05,539 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 19:15:05,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:15:05,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:15:05,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-21 19:15:05,539 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 19:15:05,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:15:05,539 INFO L85 PathProgramCache]: Analyzing trace with hash 568215967, now seen corresponding path program 10 times [2024-06-21 19:15:05,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:15:05,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479159774] [2024-06-21 19:15:05,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:15:05,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:15:05,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:15:07,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:15:07,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:15:07,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479159774] [2024-06-21 19:15:07,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479159774] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:15:07,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:15:07,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:15:07,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46716109] [2024-06-21 19:15:07,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:15:07,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:15:07,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:15:07,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:15:07,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:15:07,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:15:07,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 252 transitions, 3484 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 19:15:07,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:15:07,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:15:07,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:15:07,613 INFO L124 PetriNetUnfolderBase]: 558/1006 cut-off events. [2024-06-21 19:15:07,613 INFO L125 PetriNetUnfolderBase]: For 62694/62694 co-relation queries the response was YES. [2024-06-21 19:15:07,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7621 conditions, 1006 events. 558/1006 cut-off events. For 62694/62694 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5110 event pairs, 66 based on Foata normal form. 1/1007 useless extension candidates. Maximal degree in co-relation 7503. Up to 863 conditions per place. [2024-06-21 19:15:07,622 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 208 selfloop transitions, 51 changer transitions 0/261 dead transitions. [2024-06-21 19:15:07,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 261 transitions, 4024 flow [2024-06-21 19:15:07,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:15:07,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:15:07,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-21 19:15:07,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3580645161290323 [2024-06-21 19:15:07,623 INFO L175 Difference]: Start difference. First operand has 298 places, 252 transitions, 3484 flow. Second operand 10 states and 111 transitions. [2024-06-21 19:15:07,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 261 transitions, 4024 flow [2024-06-21 19:15:07,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 261 transitions, 3897 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-21 19:15:07,826 INFO L231 Difference]: Finished difference. Result has 299 places, 252 transitions, 3466 flow [2024-06-21 19:15:07,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3357, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3466, PETRI_PLACES=299, PETRI_TRANSITIONS=252} [2024-06-21 19:15:07,826 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 269 predicate places. [2024-06-21 19:15:07,826 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 252 transitions, 3466 flow [2024-06-21 19:15:07,826 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 19:15:07,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:15:07,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:15:07,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-21 19:15:07,826 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 19:15:07,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:15:07,827 INFO L85 PathProgramCache]: Analyzing trace with hash -743251607, now seen corresponding path program 11 times [2024-06-21 19:15:07,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:15:07,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309426038] [2024-06-21 19:15:07,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:15:07,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:15:07,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:15:09,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:15:09,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:15:09,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309426038] [2024-06-21 19:15:09,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309426038] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:15:09,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:15:09,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:15:09,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736808160] [2024-06-21 19:15:09,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:15:09,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:15:09,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:15:09,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:15:09,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:15:09,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:15:09,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 252 transitions, 3466 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 19:15:09,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:15:09,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:15:09,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:15:09,658 INFO L124 PetriNetUnfolderBase]: 564/1016 cut-off events. [2024-06-21 19:15:09,658 INFO L125 PetriNetUnfolderBase]: For 63023/63023 co-relation queries the response was YES. [2024-06-21 19:15:09,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7665 conditions, 1016 events. 564/1016 cut-off events. For 63023/63023 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 5179 event pairs, 71 based on Foata normal form. 1/1017 useless extension candidates. Maximal degree in co-relation 7547. Up to 662 conditions per place. [2024-06-21 19:15:09,668 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 159 selfloop transitions, 107 changer transitions 0/268 dead transitions. [2024-06-21 19:15:09,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 268 transitions, 4266 flow [2024-06-21 19:15:09,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:15:09,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:15:09,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-21 19:15:09,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36129032258064514 [2024-06-21 19:15:09,669 INFO L175 Difference]: Start difference. First operand has 299 places, 252 transitions, 3466 flow. Second operand 10 states and 112 transitions. [2024-06-21 19:15:09,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 268 transitions, 4266 flow [2024-06-21 19:15:09,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 268 transitions, 4093 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-21 19:15:09,880 INFO L231 Difference]: Finished difference. Result has 299 places, 259 transitions, 3655 flow [2024-06-21 19:15:09,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3295, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3655, PETRI_PLACES=299, PETRI_TRANSITIONS=259} [2024-06-21 19:15:09,881 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 269 predicate places. [2024-06-21 19:15:09,881 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 259 transitions, 3655 flow [2024-06-21 19:15:09,881 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 19:15:09,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:15:09,881 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:15:09,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-21 19:15:09,882 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 19:15:09,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:15:09,882 INFO L85 PathProgramCache]: Analyzing trace with hash -743251390, now seen corresponding path program 6 times [2024-06-21 19:15:09,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:15:09,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263084103] [2024-06-21 19:15:09,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:15:09,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:15:09,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:15:11,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:15:11,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:15:11,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263084103] [2024-06-21 19:15:11,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263084103] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:15:11,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:15:11,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:15:11,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839557550] [2024-06-21 19:15:11,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:15:11,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:15:11,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:15:11,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:15:11,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:15:11,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:15:11,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 259 transitions, 3655 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 19:15:11,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:15:11,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:15:11,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:15:11,883 INFO L124 PetriNetUnfolderBase]: 570/1026 cut-off events. [2024-06-21 19:15:11,884 INFO L125 PetriNetUnfolderBase]: For 65622/65622 co-relation queries the response was YES. [2024-06-21 19:15:11,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7908 conditions, 1026 events. 570/1026 cut-off events. For 65622/65622 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 5216 event pairs, 71 based on Foata normal form. 2/1028 useless extension candidates. Maximal degree in co-relation 7788. Up to 548 conditions per place. [2024-06-21 19:15:11,892 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 180 selfloop transitions, 95 changer transitions 0/277 dead transitions. [2024-06-21 19:15:11,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 277 transitions, 4617 flow [2024-06-21 19:15:11,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:15:11,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:15:11,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-21 19:15:11,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43010752688172044 [2024-06-21 19:15:11,893 INFO L175 Difference]: Start difference. First operand has 299 places, 259 transitions, 3655 flow. Second operand 9 states and 120 transitions. [2024-06-21 19:15:11,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 277 transitions, 4617 flow [2024-06-21 19:15:12,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 277 transitions, 4337 flow, removed 43 selfloop flow, removed 10 redundant places. [2024-06-21 19:15:12,088 INFO L231 Difference]: Finished difference. Result has 298 places, 263 transitions, 3631 flow [2024-06-21 19:15:12,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3383, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3631, PETRI_PLACES=298, PETRI_TRANSITIONS=263} [2024-06-21 19:15:12,088 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 268 predicate places. [2024-06-21 19:15:12,088 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 263 transitions, 3631 flow [2024-06-21 19:15:12,088 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 19:15:12,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:15:12,089 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:15:12,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-21 19:15:12,092 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 19:15:12,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:15:12,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1855898278, now seen corresponding path program 7 times [2024-06-21 19:15:12,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:15:12,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823025383] [2024-06-21 19:15:12,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:15:12,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:15:12,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:15:13,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:15:13,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:15:13,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823025383] [2024-06-21 19:15:13,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823025383] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:15:13,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:15:13,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:15:13,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071923181] [2024-06-21 19:15:13,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:15:13,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:15:13,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:15:13,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:15:13,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:15:13,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:15:13,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 263 transitions, 3631 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:13,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:15:13,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:15:13,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:15:14,012 INFO L124 PetriNetUnfolderBase]: 583/1047 cut-off events. [2024-06-21 19:15:14,013 INFO L125 PetriNetUnfolderBase]: For 67624/67624 co-relation queries the response was YES. [2024-06-21 19:15:14,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8109 conditions, 1047 events. 583/1047 cut-off events. For 67624/67624 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 5355 event pairs, 74 based on Foata normal form. 1/1048 useless extension candidates. Maximal degree in co-relation 7993. Up to 732 conditions per place. [2024-06-21 19:15:14,022 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 170 selfloop transitions, 117 changer transitions 0/289 dead transitions. [2024-06-21 19:15:14,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 289 transitions, 4846 flow [2024-06-21 19:15:14,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:15:14,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:15:14,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-21 19:15:14,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4229390681003584 [2024-06-21 19:15:14,023 INFO L175 Difference]: Start difference. First operand has 298 places, 263 transitions, 3631 flow. Second operand 9 states and 118 transitions. [2024-06-21 19:15:14,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 289 transitions, 4846 flow [2024-06-21 19:15:14,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 289 transitions, 4622 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-21 19:15:14,200 INFO L231 Difference]: Finished difference. Result has 302 places, 277 transitions, 3915 flow [2024-06-21 19:15:14,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3443, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3915, PETRI_PLACES=302, PETRI_TRANSITIONS=277} [2024-06-21 19:15:14,201 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 272 predicate places. [2024-06-21 19:15:14,201 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 277 transitions, 3915 flow [2024-06-21 19:15:14,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:14,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:15:14,201 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:15:14,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-21 19:15:14,201 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 19:15:14,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:15:14,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1126054738, now seen corresponding path program 8 times [2024-06-21 19:15:14,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:15:14,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944157443] [2024-06-21 19:15:14,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:15:14,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:15:14,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:15:15,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:15:15,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:15:15,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944157443] [2024-06-21 19:15:15,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944157443] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:15:15,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:15:15,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:15:15,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821005588] [2024-06-21 19:15:15,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:15:15,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:15:15,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:15:15,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:15:15,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:15:15,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:15:15,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 277 transitions, 3915 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 19:15:15,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:15:15,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:15:15,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:15:16,112 INFO L124 PetriNetUnfolderBase]: 595/1067 cut-off events. [2024-06-21 19:15:16,112 INFO L125 PetriNetUnfolderBase]: For 73376/73376 co-relation queries the response was YES. [2024-06-21 19:15:16,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8472 conditions, 1067 events. 595/1067 cut-off events. For 73376/73376 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 5465 event pairs, 73 based on Foata normal form. 2/1069 useless extension candidates. Maximal degree in co-relation 8354. Up to 570 conditions per place. [2024-06-21 19:15:16,121 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 148 selfloop transitions, 145 changer transitions 0/295 dead transitions. [2024-06-21 19:15:16,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 295 transitions, 4896 flow [2024-06-21 19:15:16,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:15:16,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:15:16,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-21 19:15:16,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4229390681003584 [2024-06-21 19:15:16,122 INFO L175 Difference]: Start difference. First operand has 302 places, 277 transitions, 3915 flow. Second operand 9 states and 118 transitions. [2024-06-21 19:15:16,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 295 transitions, 4896 flow [2024-06-21 19:15:16,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 295 transitions, 4753 flow, removed 24 selfloop flow, removed 3 redundant places. [2024-06-21 19:15:16,329 INFO L231 Difference]: Finished difference. Result has 309 places, 284 transitions, 4172 flow [2024-06-21 19:15:16,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3772, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4172, PETRI_PLACES=309, PETRI_TRANSITIONS=284} [2024-06-21 19:15:16,329 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 279 predicate places. [2024-06-21 19:15:16,330 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 284 transitions, 4172 flow [2024-06-21 19:15:16,330 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 19:15:16,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:15:16,330 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:15:16,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-21 19:15:16,330 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 19:15:16,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:15:16,330 INFO L85 PathProgramCache]: Analyzing trace with hash -536590231, now seen corresponding path program 2 times [2024-06-21 19:15:16,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:15:16,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628632638] [2024-06-21 19:15:16,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:15:16,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:15:16,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:15:17,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:15:17,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:15:17,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628632638] [2024-06-21 19:15:17,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628632638] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:15:17,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:15:17,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:15:17,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165267470] [2024-06-21 19:15:17,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:15:17,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:15:17,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:15:17,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:15:17,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:15:18,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:15:18,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 284 transitions, 4172 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 19:15:18,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:15:18,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:15:18,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:15:18,535 INFO L124 PetriNetUnfolderBase]: 610/1092 cut-off events. [2024-06-21 19:15:18,535 INFO L125 PetriNetUnfolderBase]: For 81207/81207 co-relation queries the response was YES. [2024-06-21 19:15:18,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8974 conditions, 1092 events. 610/1092 cut-off events. For 81207/81207 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 5595 event pairs, 72 based on Foata normal form. 3/1095 useless extension candidates. Maximal degree in co-relation 8853. Up to 576 conditions per place. [2024-06-21 19:15:18,544 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 151 selfloop transitions, 149 changer transitions 0/302 dead transitions. [2024-06-21 19:15:18,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 302 transitions, 5316 flow [2024-06-21 19:15:18,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:15:18,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:15:18,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-21 19:15:18,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4129032258064516 [2024-06-21 19:15:18,545 INFO L175 Difference]: Start difference. First operand has 309 places, 284 transitions, 4172 flow. Second operand 10 states and 128 transitions. [2024-06-21 19:15:18,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 302 transitions, 5316 flow [2024-06-21 19:15:18,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 302 transitions, 5196 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-21 19:15:18,907 INFO L231 Difference]: Finished difference. Result has 316 places, 289 transitions, 4436 flow [2024-06-21 19:15:18,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4054, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4436, PETRI_PLACES=316, PETRI_TRANSITIONS=289} [2024-06-21 19:15:18,908 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 286 predicate places. [2024-06-21 19:15:18,908 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 289 transitions, 4436 flow [2024-06-21 19:15:18,908 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 19:15:18,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:15:18,909 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:15:18,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-21 19:15:18,909 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 19:15:18,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:15:18,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1170578026, now seen corresponding path program 9 times [2024-06-21 19:15:18,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:15:18,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401737284] [2024-06-21 19:15:18,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:15:18,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:15:18,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:15:20,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:15:20,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:15:20,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401737284] [2024-06-21 19:15:20,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401737284] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:15:20,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:15:20,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:15:20,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90052048] [2024-06-21 19:15:20,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:15:20,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:15:20,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:15:20,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:15:20,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:15:20,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:15:20,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 289 transitions, 4436 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 19:15:20,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:15:20,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:15:20,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:15:20,925 INFO L124 PetriNetUnfolderBase]: 650/1157 cut-off events. [2024-06-21 19:15:20,925 INFO L125 PetriNetUnfolderBase]: For 96490/96490 co-relation queries the response was YES. [2024-06-21 19:15:20,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10100 conditions, 1157 events. 650/1157 cut-off events. For 96490/96490 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 5970 event pairs, 78 based on Foata normal form. 2/1159 useless extension candidates. Maximal degree in co-relation 9977. Up to 627 conditions per place. [2024-06-21 19:15:20,936 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 198 selfloop transitions, 121 changer transitions 0/321 dead transitions. [2024-06-21 19:15:20,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 321 transitions, 6008 flow [2024-06-21 19:15:20,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:15:20,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:15:20,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 125 transitions. [2024-06-21 19:15:20,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44802867383512546 [2024-06-21 19:15:20,937 INFO L175 Difference]: Start difference. First operand has 316 places, 289 transitions, 4436 flow. Second operand 9 states and 125 transitions. [2024-06-21 19:15:20,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 321 transitions, 6008 flow [2024-06-21 19:15:21,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 321 transitions, 5676 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-21 19:15:21,255 INFO L231 Difference]: Finished difference. Result has 321 places, 303 transitions, 4592 flow [2024-06-21 19:15:21,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4130, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4592, PETRI_PLACES=321, PETRI_TRANSITIONS=303} [2024-06-21 19:15:21,255 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 291 predicate places. [2024-06-21 19:15:21,255 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 303 transitions, 4592 flow [2024-06-21 19:15:21,255 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 19:15:21,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:15:21,255 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:15:21,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-21 19:15:21,256 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 19:15:21,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:15:21,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1170578243, now seen corresponding path program 12 times [2024-06-21 19:15:21,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:15:21,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449749671] [2024-06-21 19:15:21,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:15:21,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:15:21,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:15:22,512 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 19:15:22,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:15:22,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449749671] [2024-06-21 19:15:22,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449749671] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:15:22,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:15:22,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:15:22,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384956804] [2024-06-21 19:15:22,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:15:22,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:15:22,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:15:22,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:15:22,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:15:22,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:15:22,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 303 transitions, 4592 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 19:15:22,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:15:22,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:15:22,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:15:22,934 INFO L124 PetriNetUnfolderBase]: 647/1152 cut-off events. [2024-06-21 19:15:22,934 INFO L125 PetriNetUnfolderBase]: For 94230/94230 co-relation queries the response was YES. [2024-06-21 19:15:22,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9948 conditions, 1152 events. 647/1152 cut-off events. For 94230/94230 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 5959 event pairs, 76 based on Foata normal form. 1/1153 useless extension candidates. Maximal degree in co-relation 9823. Up to 790 conditions per place. [2024-06-21 19:15:22,946 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 198 selfloop transitions, 114 changer transitions 0/314 dead transitions. [2024-06-21 19:15:22,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 314 transitions, 5553 flow [2024-06-21 19:15:22,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:15:22,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:15:22,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-21 19:15:22,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-21 19:15:22,947 INFO L175 Difference]: Start difference. First operand has 321 places, 303 transitions, 4592 flow. Second operand 10 states and 115 transitions. [2024-06-21 19:15:22,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 314 transitions, 5553 flow [2024-06-21 19:15:23,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 314 transitions, 5352 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-06-21 19:15:23,242 INFO L231 Difference]: Finished difference. Result has 328 places, 304 transitions, 4648 flow [2024-06-21 19:15:23,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4391, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4648, PETRI_PLACES=328, PETRI_TRANSITIONS=304} [2024-06-21 19:15:23,242 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 298 predicate places. [2024-06-21 19:15:23,242 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 304 transitions, 4648 flow [2024-06-21 19:15:23,242 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 19:15:23,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:15:23,242 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:15:23,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-21 19:15:23,242 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 19:15:23,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:15:23,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1599397768, now seen corresponding path program 10 times [2024-06-21 19:15:23,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:15:23,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012506802] [2024-06-21 19:15:23,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:15:23,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:15:23,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:15:24,689 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 19:15:24,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:15:24,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012506802] [2024-06-21 19:15:24,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012506802] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:15:24,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:15:24,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:15:24,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271954565] [2024-06-21 19:15:24,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:15:24,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:15:24,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:15:24,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:15:24,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:15:24,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:15:24,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 304 transitions, 4648 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:24,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:15:24,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:15:24,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:15:25,057 INFO L124 PetriNetUnfolderBase]: 650/1157 cut-off events. [2024-06-21 19:15:25,057 INFO L125 PetriNetUnfolderBase]: For 96796/96796 co-relation queries the response was YES. [2024-06-21 19:15:25,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10005 conditions, 1157 events. 650/1157 cut-off events. For 96796/96796 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 5979 event pairs, 73 based on Foata normal form. 1/1158 useless extension candidates. Maximal degree in co-relation 9878. Up to 837 conditions per place. [2024-06-21 19:15:25,069 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 209 selfloop transitions, 108 changer transitions 0/319 dead transitions. [2024-06-21 19:15:25,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 319 transitions, 5813 flow [2024-06-21 19:15:25,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:15:25,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:15:25,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-21 19:15:25,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4229390681003584 [2024-06-21 19:15:25,071 INFO L175 Difference]: Start difference. First operand has 328 places, 304 transitions, 4648 flow. Second operand 9 states and 118 transitions. [2024-06-21 19:15:25,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 319 transitions, 5813 flow [2024-06-21 19:15:25,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 319 transitions, 5576 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-21 19:15:25,500 INFO L231 Difference]: Finished difference. Result has 329 places, 307 transitions, 4699 flow [2024-06-21 19:15:25,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4417, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4699, PETRI_PLACES=329, PETRI_TRANSITIONS=307} [2024-06-21 19:15:25,501 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 299 predicate places. [2024-06-21 19:15:25,501 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 307 transitions, 4699 flow [2024-06-21 19:15:25,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:25,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:15:25,501 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:15:25,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-21 19:15:25,501 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 19:15:25,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:15:25,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1599398047, now seen corresponding path program 3 times [2024-06-21 19:15:25,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:15:25,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018009802] [2024-06-21 19:15:25,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:15:25,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:15:25,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:15:27,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:15:27,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:15:27,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018009802] [2024-06-21 19:15:27,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018009802] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:15:27,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:15:27,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:15:27,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155630558] [2024-06-21 19:15:27,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:15:27,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:15:27,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:15:27,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:15:27,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:15:27,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:15:27,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 307 transitions, 4699 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 19:15:27,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:15:27,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:15:27,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:15:27,505 INFO L124 PetriNetUnfolderBase]: 661/1176 cut-off events. [2024-06-21 19:15:27,505 INFO L125 PetriNetUnfolderBase]: For 101750/101750 co-relation queries the response was YES. [2024-06-21 19:15:27,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10127 conditions, 1176 events. 661/1176 cut-off events. For 101750/101750 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 6095 event pairs, 76 based on Foata normal form. 3/1179 useless extension candidates. Maximal degree in co-relation 10002. Up to 843 conditions per place. [2024-06-21 19:15:27,516 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 211 selfloop transitions, 110 changer transitions 0/323 dead transitions. [2024-06-21 19:15:27,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 323 transitions, 5879 flow [2024-06-21 19:15:27,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:15:27,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:15:27,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-21 19:15:27,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43010752688172044 [2024-06-21 19:15:27,517 INFO L175 Difference]: Start difference. First operand has 329 places, 307 transitions, 4699 flow. Second operand 9 states and 120 transitions. [2024-06-21 19:15:27,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 323 transitions, 5879 flow [2024-06-21 19:15:27,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 323 transitions, 5706 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-21 19:15:27,825 INFO L231 Difference]: Finished difference. Result has 333 places, 310 transitions, 4806 flow [2024-06-21 19:15:27,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4526, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4806, PETRI_PLACES=333, PETRI_TRANSITIONS=310} [2024-06-21 19:15:27,825 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 303 predicate places. [2024-06-21 19:15:27,825 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 310 transitions, 4806 flow [2024-06-21 19:15:27,826 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 19:15:27,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:15:27,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:15:27,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-21 19:15:27,826 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 19:15:27,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:15:27,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1170570307, now seen corresponding path program 4 times [2024-06-21 19:15:27,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:15:27,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325931830] [2024-06-21 19:15:27,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:15:27,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:15:27,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:15:29,411 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 19:15:29,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:15:29,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325931830] [2024-06-21 19:15:29,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325931830] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:15:29,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:15:29,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:15:29,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388299460] [2024-06-21 19:15:29,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:15:29,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:15:29,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:15:29,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:15:29,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:15:29,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:15:29,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 310 transitions, 4806 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 19:15:29,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:15:29,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:15:29,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:15:29,860 INFO L124 PetriNetUnfolderBase]: 672/1195 cut-off events. [2024-06-21 19:15:29,861 INFO L125 PetriNetUnfolderBase]: For 105674/105674 co-relation queries the response was YES. [2024-06-21 19:15:29,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10371 conditions, 1195 events. 672/1195 cut-off events. For 105674/105674 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 6213 event pairs, 71 based on Foata normal form. 3/1198 useless extension candidates. Maximal degree in co-relation 10245. Up to 857 conditions per place. [2024-06-21 19:15:29,873 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 222 selfloop transitions, 103 changer transitions 0/327 dead transitions. [2024-06-21 19:15:29,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 327 transitions, 6032 flow [2024-06-21 19:15:29,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:15:29,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:15:29,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-21 19:15:29,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43010752688172044 [2024-06-21 19:15:29,874 INFO L175 Difference]: Start difference. First operand has 333 places, 310 transitions, 4806 flow. Second operand 9 states and 120 transitions. [2024-06-21 19:15:29,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 327 transitions, 6032 flow [2024-06-21 19:15:30,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 327 transitions, 5836 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-21 19:15:30,198 INFO L231 Difference]: Finished difference. Result has 336 places, 314 transitions, 4910 flow [2024-06-21 19:15:30,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4611, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4910, PETRI_PLACES=336, PETRI_TRANSITIONS=314} [2024-06-21 19:15:30,199 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 306 predicate places. [2024-06-21 19:15:30,199 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 314 transitions, 4910 flow [2024-06-21 19:15:30,199 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 19:15:30,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:15:30,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:15:30,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-21 19:15:30,199 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 19:15:30,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:15:30,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1170570586, now seen corresponding path program 11 times [2024-06-21 19:15:30,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:15:30,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128739045] [2024-06-21 19:15:30,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:15:30,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:15:30,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:15:31,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:15:31,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:15:31,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128739045] [2024-06-21 19:15:31,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128739045] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:15:31,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:15:31,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:15:31,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459035725] [2024-06-21 19:15:31,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:15:31,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:15:31,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:15:31,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:15:31,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:15:31,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:15:31,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 314 transitions, 4910 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:31,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:15:31,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:15:31,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:15:31,989 INFO L124 PetriNetUnfolderBase]: 670/1192 cut-off events. [2024-06-21 19:15:31,989 INFO L125 PetriNetUnfolderBase]: For 100262/100262 co-relation queries the response was YES. [2024-06-21 19:15:31,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10302 conditions, 1192 events. 670/1192 cut-off events. For 100262/100262 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 6178 event pairs, 73 based on Foata normal form. 1/1193 useless extension candidates. Maximal degree in co-relation 10175. Up to 873 conditions per place. [2024-06-21 19:15:32,001 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 223 selfloop transitions, 102 changer transitions 0/327 dead transitions. [2024-06-21 19:15:32,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 327 transitions, 6069 flow [2024-06-21 19:15:32,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:15:32,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:15:32,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-21 19:15:32,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4229390681003584 [2024-06-21 19:15:32,002 INFO L175 Difference]: Start difference. First operand has 336 places, 314 transitions, 4910 flow. Second operand 9 states and 118 transitions. [2024-06-21 19:15:32,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 327 transitions, 6069 flow [2024-06-21 19:15:32,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 327 transitions, 5886 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-06-21 19:15:32,346 INFO L231 Difference]: Finished difference. Result has 340 places, 315 transitions, 4963 flow [2024-06-21 19:15:32,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4730, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4963, PETRI_PLACES=340, PETRI_TRANSITIONS=315} [2024-06-21 19:15:32,346 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 310 predicate places. [2024-06-21 19:15:32,346 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 315 transitions, 4963 flow [2024-06-21 19:15:32,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:32,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:15:32,346 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:15:32,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-21 19:15:32,347 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 19:15:32,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:15:32,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1855890621, now seen corresponding path program 13 times [2024-06-21 19:15:32,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:15:32,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576624646] [2024-06-21 19:15:32,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:15:32,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:15:32,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:15:33,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:15:33,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:15:33,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576624646] [2024-06-21 19:15:33,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576624646] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:15:33,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:15:33,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:15:33,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895912366] [2024-06-21 19:15:33,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:15:33,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:15:33,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:15:33,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:15:33,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:15:33,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:15:33,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 315 transitions, 4963 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 19:15:33,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:15:33,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:15:33,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:15:34,046 INFO L124 PetriNetUnfolderBase]: 667/1187 cut-off events. [2024-06-21 19:15:34,046 INFO L125 PetriNetUnfolderBase]: For 100220/100220 co-relation queries the response was YES. [2024-06-21 19:15:34,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10168 conditions, 1187 events. 667/1187 cut-off events. For 100220/100220 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 6159 event pairs, 74 based on Foata normal form. 1/1188 useless extension candidates. Maximal degree in co-relation 10040. Up to 826 conditions per place. [2024-06-21 19:15:34,059 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 170 selfloop transitions, 152 changer transitions 0/324 dead transitions. [2024-06-21 19:15:34,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 324 transitions, 5781 flow [2024-06-21 19:15:34,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:15:34,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:15:34,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-21 19:15:34,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-21 19:15:34,060 INFO L175 Difference]: Start difference. First operand has 340 places, 315 transitions, 4963 flow. Second operand 10 states and 110 transitions. [2024-06-21 19:15:34,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 324 transitions, 5781 flow [2024-06-21 19:15:34,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 324 transitions, 5557 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-21 19:15:34,425 INFO L231 Difference]: Finished difference. Result has 343 places, 315 transitions, 5049 flow [2024-06-21 19:15:34,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4739, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5049, PETRI_PLACES=343, PETRI_TRANSITIONS=315} [2024-06-21 19:15:34,425 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 313 predicate places. [2024-06-21 19:15:34,426 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 315 transitions, 5049 flow [2024-06-21 19:15:34,426 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 19:15:34,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:15:34,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:15:34,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-21 19:15:34,426 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 19:15:34,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:15:34,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1118904681, now seen corresponding path program 14 times [2024-06-21 19:15:34,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:15:34,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740613197] [2024-06-21 19:15:34,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:15:34,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:15:34,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:15:35,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:15:35,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:15:35,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740613197] [2024-06-21 19:15:35,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740613197] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:15:35,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:15:35,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:15:35,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693426999] [2024-06-21 19:15:35,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:15:35,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:15:35,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:15:35,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:15:35,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:15:35,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:15:35,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 315 transitions, 5049 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 19:15:35,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:15:35,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:15:35,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:15:36,329 INFO L124 PetriNetUnfolderBase]: 670/1192 cut-off events. [2024-06-21 19:15:36,329 INFO L125 PetriNetUnfolderBase]: For 102407/102407 co-relation queries the response was YES. [2024-06-21 19:15:36,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10312 conditions, 1192 events. 670/1192 cut-off events. For 102407/102407 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 6196 event pairs, 75 based on Foata normal form. 1/1193 useless extension candidates. Maximal degree in co-relation 10182. Up to 830 conditions per place. [2024-06-21 19:15:36,341 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 196 selfloop transitions, 129 changer transitions 0/327 dead transitions. [2024-06-21 19:15:36,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 327 transitions, 6075 flow [2024-06-21 19:15:36,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:15:36,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:15:36,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-21 19:15:36,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36774193548387096 [2024-06-21 19:15:36,343 INFO L175 Difference]: Start difference. First operand has 343 places, 315 transitions, 5049 flow. Second operand 10 states and 114 transitions. [2024-06-21 19:15:36,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 327 transitions, 6075 flow [2024-06-21 19:15:36,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 327 transitions, 5813 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-21 19:15:36,832 INFO L231 Difference]: Finished difference. Result has 344 places, 317 transitions, 5097 flow [2024-06-21 19:15:36,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4795, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5097, PETRI_PLACES=344, PETRI_TRANSITIONS=317} [2024-06-21 19:15:36,832 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 314 predicate places. [2024-06-21 19:15:36,832 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 317 transitions, 5097 flow [2024-06-21 19:15:36,832 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 19:15:36,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:15:36,832 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:15:36,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-21 19:15:36,833 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 19:15:36,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:15:36,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1865095327, now seen corresponding path program 5 times [2024-06-21 19:15:36,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:15:36,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378122370] [2024-06-21 19:15:36,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:15:36,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:15:36,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:15:38,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:15:38,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:15:38,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378122370] [2024-06-21 19:15:38,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378122370] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:15:38,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:15:38,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:15:38,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390190947] [2024-06-21 19:15:38,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:15:38,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:15:38,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:15:38,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:15:38,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:15:38,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:15:38,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 317 transitions, 5097 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 19:15:38,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:15:38,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:15:38,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:15:38,678 INFO L124 PetriNetUnfolderBase]: 681/1211 cut-off events. [2024-06-21 19:15:38,678 INFO L125 PetriNetUnfolderBase]: For 108237/108237 co-relation queries the response was YES. [2024-06-21 19:15:38,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10435 conditions, 1211 events. 681/1211 cut-off events. For 108237/108237 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 6301 event pairs, 172 based on Foata normal form. 3/1214 useless extension candidates. Maximal degree in co-relation 10306. Up to 1168 conditions per place. [2024-06-21 19:15:38,691 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 309 selfloop transitions, 20 changer transitions 0/331 dead transitions. [2024-06-21 19:15:38,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 331 transitions, 6013 flow [2024-06-21 19:15:38,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:15:38,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:15:38,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 100 transitions. [2024-06-21 19:15:38,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-21 19:15:38,692 INFO L175 Difference]: Start difference. First operand has 344 places, 317 transitions, 5097 flow. Second operand 10 states and 100 transitions. [2024-06-21 19:15:38,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 331 transitions, 6013 flow [2024-06-21 19:15:39,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 331 transitions, 5655 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-21 19:15:39,045 INFO L231 Difference]: Finished difference. Result has 345 places, 320 transitions, 4852 flow [2024-06-21 19:15:39,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4741, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4852, PETRI_PLACES=345, PETRI_TRANSITIONS=320} [2024-06-21 19:15:39,045 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 315 predicate places. [2024-06-21 19:15:39,045 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 320 transitions, 4852 flow [2024-06-21 19:15:39,045 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 19:15:39,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:15:39,045 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:15:39,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-21 19:15:39,045 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 19:15:39,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:15:39,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1599390328, now seen corresponding path program 12 times [2024-06-21 19:15:39,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:15:39,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484738577] [2024-06-21 19:15:39,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:15:39,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:15:39,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:15:40,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:15:40,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:15:40,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484738577] [2024-06-21 19:15:40,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484738577] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:15:40,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:15:40,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:15:40,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753085099] [2024-06-21 19:15:40,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:15:40,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:15:40,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:15:40,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:15:40,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:15:40,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:15:40,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 320 transitions, 4852 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 19:15:40,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:15:40,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:15:40,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:15:41,024 INFO L124 PetriNetUnfolderBase]: 692/1229 cut-off events. [2024-06-21 19:15:41,024 INFO L125 PetriNetUnfolderBase]: For 107646/107646 co-relation queries the response was YES. [2024-06-21 19:15:41,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10379 conditions, 1229 events. 692/1229 cut-off events. For 107646/107646 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 6380 event pairs, 75 based on Foata normal form. 2/1231 useless extension candidates. Maximal degree in co-relation 10251. Up to 693 conditions per place. [2024-06-21 19:15:41,037 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 196 selfloop transitions, 141 changer transitions 0/339 dead transitions. [2024-06-21 19:15:41,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 339 transitions, 6274 flow [2024-06-21 19:15:41,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:15:41,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:15:41,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 124 transitions. [2024-06-21 19:15:41,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-21 19:15:41,038 INFO L175 Difference]: Start difference. First operand has 345 places, 320 transitions, 4852 flow. Second operand 9 states and 124 transitions. [2024-06-21 19:15:41,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 339 transitions, 6274 flow [2024-06-21 19:15:41,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 339 transitions, 6181 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-21 19:15:41,403 INFO L231 Difference]: Finished difference. Result has 346 places, 325 transitions, 5122 flow [2024-06-21 19:15:41,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4759, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5122, PETRI_PLACES=346, PETRI_TRANSITIONS=325} [2024-06-21 19:15:41,404 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 316 predicate places. [2024-06-21 19:15:41,404 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 325 transitions, 5122 flow [2024-06-21 19:15:41,404 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 19:15:41,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:15:41,404 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:15:41,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-21 19:15:41,404 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 19:15:41,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:15:41,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1118697291, now seen corresponding path program 15 times [2024-06-21 19:15:41,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:15:41,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868861335] [2024-06-21 19:15:41,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:15:41,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:15:41,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:15:43,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:15:43,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:15:43,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868861335] [2024-06-21 19:15:43,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868861335] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:15:43,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:15:43,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:15:43,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414565787] [2024-06-21 19:15:43,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:15:43,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:15:43,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:15:43,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:15:43,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:15:43,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:15:43,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 325 transitions, 5122 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 19:15:43,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:15:43,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:15:43,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:15:43,644 INFO L124 PetriNetUnfolderBase]: 690/1226 cut-off events. [2024-06-21 19:15:43,644 INFO L125 PetriNetUnfolderBase]: For 105559/105559 co-relation queries the response was YES. [2024-06-21 19:15:43,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10485 conditions, 1226 events. 690/1226 cut-off events. For 105559/105559 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 6392 event pairs, 77 based on Foata normal form. 1/1227 useless extension candidates. Maximal degree in co-relation 10357. Up to 978 conditions per place. [2024-06-21 19:15:43,656 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 219 selfloop transitions, 114 changer transitions 0/335 dead transitions. [2024-06-21 19:15:43,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 335 transitions, 5810 flow [2024-06-21 19:15:43,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:15:43,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:15:43,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-21 19:15:43,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3519061583577713 [2024-06-21 19:15:43,657 INFO L175 Difference]: Start difference. First operand has 346 places, 325 transitions, 5122 flow. Second operand 11 states and 120 transitions. [2024-06-21 19:15:43,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 335 transitions, 5810 flow [2024-06-21 19:15:44,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 335 transitions, 5389 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-21 19:15:44,064 INFO L231 Difference]: Finished difference. Result has 350 places, 325 transitions, 4935 flow [2024-06-21 19:15:44,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4701, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4935, PETRI_PLACES=350, PETRI_TRANSITIONS=325} [2024-06-21 19:15:44,064 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 320 predicate places. [2024-06-21 19:15:44,064 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 325 transitions, 4935 flow [2024-06-21 19:15:44,064 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 19:15:44,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:15:44,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:15:44,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-21 19:15:44,065 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 19:15:44,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:15:44,065 INFO L85 PathProgramCache]: Analyzing trace with hash -976840426, now seen corresponding path program 13 times [2024-06-21 19:15:44,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:15:44,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777844650] [2024-06-21 19:15:44,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:15:44,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:15:44,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:15:45,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:15:45,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:15:45,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777844650] [2024-06-21 19:15:45,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777844650] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:15:45,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:15:45,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:15:45,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036034064] [2024-06-21 19:15:45,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:15:45,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:15:45,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:15:45,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:15:45,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:15:45,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:15:45,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 325 transitions, 4935 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 19:15:45,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:15:45,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:15:45,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:15:46,140 INFO L124 PetriNetUnfolderBase]: 684/1216 cut-off events. [2024-06-21 19:15:46,141 INFO L125 PetriNetUnfolderBase]: For 102897/102897 co-relation queries the response was YES. [2024-06-21 19:15:46,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10133 conditions, 1216 events. 684/1216 cut-off events. For 102897/102897 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 6353 event pairs, 74 based on Foata normal form. 2/1218 useless extension candidates. Maximal degree in co-relation 10003. Up to 685 conditions per place. [2024-06-21 19:15:46,152 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 191 selfloop transitions, 144 changer transitions 0/337 dead transitions. [2024-06-21 19:15:46,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 337 transitions, 5971 flow [2024-06-21 19:15:46,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:15:46,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:15:46,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-21 19:15:46,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4265232974910394 [2024-06-21 19:15:46,153 INFO L175 Difference]: Start difference. First operand has 350 places, 325 transitions, 4935 flow. Second operand 9 states and 119 transitions. [2024-06-21 19:15:46,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 337 transitions, 5971 flow [2024-06-21 19:15:46,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 337 transitions, 5690 flow, removed 29 selfloop flow, removed 9 redundant places. [2024-06-21 19:15:46,496 INFO L231 Difference]: Finished difference. Result has 350 places, 325 transitions, 4965 flow [2024-06-21 19:15:46,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4670, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4965, PETRI_PLACES=350, PETRI_TRANSITIONS=325} [2024-06-21 19:15:46,497 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 320 predicate places. [2024-06-21 19:15:46,497 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 325 transitions, 4965 flow [2024-06-21 19:15:46,497 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 19:15:46,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:15:46,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:15:46,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-21 19:15:46,498 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 19:15:46,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:15:46,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1170780053, now seen corresponding path program 16 times [2024-06-21 19:15:46,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:15:46,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129527671] [2024-06-21 19:15:46,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:15:46,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:15:46,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:15:47,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:15:47,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:15:47,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129527671] [2024-06-21 19:15:47,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129527671] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:15:47,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:15:47,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:15:47,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237781587] [2024-06-21 19:15:47,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:15:47,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:15:47,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:15:47,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:15:47,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:15:47,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:15:47,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 325 transitions, 4965 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 19:15:47,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:15:47,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:15:47,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:15:48,240 INFO L124 PetriNetUnfolderBase]: 682/1213 cut-off events. [2024-06-21 19:15:48,240 INFO L125 PetriNetUnfolderBase]: For 99618/99618 co-relation queries the response was YES. [2024-06-21 19:15:48,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10091 conditions, 1213 events. 682/1213 cut-off events. For 99618/99618 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 6313 event pairs, 79 based on Foata normal form. 1/1214 useless extension candidates. Maximal degree in co-relation 9961. Up to 853 conditions per place. [2024-06-21 19:15:48,253 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 217 selfloop transitions, 114 changer transitions 0/333 dead transitions. [2024-06-21 19:15:48,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 333 transitions, 5645 flow [2024-06-21 19:15:48,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:15:48,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:15:48,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-21 19:15:48,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36774193548387096 [2024-06-21 19:15:48,255 INFO L175 Difference]: Start difference. First operand has 350 places, 325 transitions, 4965 flow. Second operand 10 states and 114 transitions. [2024-06-21 19:15:48,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 333 transitions, 5645 flow [2024-06-21 19:15:48,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 333 transitions, 5332 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-21 19:15:48,628 INFO L231 Difference]: Finished difference. Result has 352 places, 325 transitions, 4887 flow [2024-06-21 19:15:48,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4652, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4887, PETRI_PLACES=352, PETRI_TRANSITIONS=325} [2024-06-21 19:15:48,629 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 322 predicate places. [2024-06-21 19:15:48,629 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 325 transitions, 4887 flow [2024-06-21 19:15:48,629 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 19:15:48,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:15:48,629 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:15:48,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-21 19:15:48,629 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 19:15:48,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:15:48,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1126321648, now seen corresponding path program 14 times [2024-06-21 19:15:48,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:15:48,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695160558] [2024-06-21 19:15:48,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:15:48,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:15:48,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:15:49,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:15:49,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:15:49,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695160558] [2024-06-21 19:15:49,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695160558] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:15:49,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:15:49,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:15:49,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825551878] [2024-06-21 19:15:49,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:15:49,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:15:49,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:15:49,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:15:49,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:15:50,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:15:50,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 325 transitions, 4887 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 19:15:50,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:15:50,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:15:50,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:15:50,403 INFO L124 PetriNetUnfolderBase]: 678/1206 cut-off events. [2024-06-21 19:15:50,403 INFO L125 PetriNetUnfolderBase]: For 97963/97963 co-relation queries the response was YES. [2024-06-21 19:15:50,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9898 conditions, 1206 events. 678/1206 cut-off events. For 97963/97963 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 6292 event pairs, 173 based on Foata normal form. 1/1207 useless extension candidates. Maximal degree in co-relation 9766. Up to 1175 conditions per place. [2024-06-21 19:15:50,416 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 314 selfloop transitions, 18 changer transitions 0/334 dead transitions. [2024-06-21 19:15:50,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 334 transitions, 5571 flow [2024-06-21 19:15:50,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:15:50,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:15:50,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 96 transitions. [2024-06-21 19:15:50,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3096774193548387 [2024-06-21 19:15:50,418 INFO L175 Difference]: Start difference. First operand has 352 places, 325 transitions, 4887 flow. Second operand 10 states and 96 transitions. [2024-06-21 19:15:50,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 334 transitions, 5571 flow [2024-06-21 19:15:50,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 334 transitions, 5309 flow, removed 13 selfloop flow, removed 10 redundant places. [2024-06-21 19:15:50,830 INFO L231 Difference]: Finished difference. Result has 352 places, 325 transitions, 4666 flow [2024-06-21 19:15:50,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4625, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4666, PETRI_PLACES=352, PETRI_TRANSITIONS=325} [2024-06-21 19:15:50,831 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 322 predicate places. [2024-06-21 19:15:50,831 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 325 transitions, 4666 flow [2024-06-21 19:15:50,831 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 19:15:50,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:15:50,831 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:15:50,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-21 19:15:50,831 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 19:15:50,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:15:50,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1862795981, now seen corresponding path program 6 times [2024-06-21 19:15:50,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:15:50,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720307565] [2024-06-21 19:15:50,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:15:50,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:15:50,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:15:52,266 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 19:15:52,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:15:52,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720307565] [2024-06-21 19:15:52,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720307565] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:15:52,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:15:52,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:15:52,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864942422] [2024-06-21 19:15:52,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:15:52,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:15:52,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:15:52,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:15:52,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:15:52,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:15:52,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 325 transitions, 4666 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 19:15:52,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:15:52,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:15:52,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:15:52,746 INFO L124 PetriNetUnfolderBase]: 676/1203 cut-off events. [2024-06-21 19:15:52,746 INFO L125 PetriNetUnfolderBase]: For 93612/93612 co-relation queries the response was YES. [2024-06-21 19:15:52,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9565 conditions, 1203 events. 676/1203 cut-off events. For 93612/93612 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 6293 event pairs, 172 based on Foata normal form. 1/1204 useless extension candidates. Maximal degree in co-relation 9434. Up to 1157 conditions per place. [2024-06-21 19:15:52,759 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 312 selfloop transitions, 24 changer transitions 0/338 dead transitions. [2024-06-21 19:15:52,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 338 transitions, 5426 flow [2024-06-21 19:15:52,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:15:52,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:15:52,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 113 transitions. [2024-06-21 19:15:52,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30376344086021506 [2024-06-21 19:15:52,760 INFO L175 Difference]: Start difference. First operand has 352 places, 325 transitions, 4666 flow. Second operand 12 states and 113 transitions. [2024-06-21 19:15:52,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 338 transitions, 5426 flow [2024-06-21 19:15:53,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 338 transitions, 5389 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-21 19:15:53,101 INFO L231 Difference]: Finished difference. Result has 355 places, 327 transitions, 4730 flow [2024-06-21 19:15:53,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4629, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4730, PETRI_PLACES=355, PETRI_TRANSITIONS=327} [2024-06-21 19:15:53,101 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 325 predicate places. [2024-06-21 19:15:53,101 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 327 transitions, 4730 flow [2024-06-21 19:15:53,102 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 19:15:53,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:15:53,102 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:15:53,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-21 19:15:53,102 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 19:15:53,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:15:53,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1173405612, now seen corresponding path program 15 times [2024-06-21 19:15:53,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:15:53,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422120662] [2024-06-21 19:15:53,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:15:53,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:15:53,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:15:54,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:15:54,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:15:54,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422120662] [2024-06-21 19:15:54,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422120662] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:15:54,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:15:54,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:15:54,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542351859] [2024-06-21 19:15:54,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:15:54,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:15:54,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:15:54,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:15:54,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:15:54,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:15:54,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 327 transitions, 4730 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 19:15:54,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:15:54,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:15:54,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:15:55,144 INFO L124 PetriNetUnfolderBase]: 670/1193 cut-off events. [2024-06-21 19:15:55,144 INFO L125 PetriNetUnfolderBase]: For 92626/92626 co-relation queries the response was YES. [2024-06-21 19:15:55,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9403 conditions, 1193 events. 670/1193 cut-off events. For 92626/92626 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 6227 event pairs, 72 based on Foata normal form. 2/1195 useless extension candidates. Maximal degree in co-relation 9271. Up to 669 conditions per place. [2024-06-21 19:15:55,156 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 213 selfloop transitions, 126 changer transitions 0/341 dead transitions. [2024-06-21 19:15:55,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 341 transitions, 5980 flow [2024-06-21 19:15:55,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:15:55,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:15:55,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 125 transitions. [2024-06-21 19:15:55,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44802867383512546 [2024-06-21 19:15:55,157 INFO L175 Difference]: Start difference. First operand has 355 places, 327 transitions, 4730 flow. Second operand 9 states and 125 transitions. [2024-06-21 19:15:55,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 341 transitions, 5980 flow [2024-06-21 19:15:55,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 341 transitions, 5829 flow, removed 53 selfloop flow, removed 10 redundant places. [2024-06-21 19:15:55,510 INFO L231 Difference]: Finished difference. Result has 354 places, 327 transitions, 4870 flow [2024-06-21 19:15:55,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4611, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4870, PETRI_PLACES=354, PETRI_TRANSITIONS=327} [2024-06-21 19:15:55,510 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 324 predicate places. [2024-06-21 19:15:55,510 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 327 transitions, 4870 flow [2024-06-21 19:15:55,510 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 19:15:55,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:15:55,511 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 19:15:55,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-21 19:15:55,511 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 19:15:55,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:15:55,511 INFO L85 PathProgramCache]: Analyzing trace with hash 738158287, now seen corresponding path program 1 times [2024-06-21 19:15:55,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:15:55,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189398846] [2024-06-21 19:15:55,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:15:55,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:15:55,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:15:56,823 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 19:15:56,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:15:56,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189398846] [2024-06-21 19:15:56,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189398846] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:15:56,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:15:56,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:15:56,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215880563] [2024-06-21 19:15:56,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:15:56,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:15:56,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:15:56,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:15:56,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:15:56,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:15:56,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 327 transitions, 4870 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 19:15:56,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:15:56,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:15:56,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:15:57,373 INFO L124 PetriNetUnfolderBase]: 674/1201 cut-off events. [2024-06-21 19:15:57,373 INFO L125 PetriNetUnfolderBase]: For 95101/95101 co-relation queries the response was YES. [2024-06-21 19:15:57,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9600 conditions, 1201 events. 674/1201 cut-off events. For 95101/95101 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 6323 event pairs, 87 based on Foata normal form. 2/1203 useless extension candidates. Maximal degree in co-relation 9468. Up to 1076 conditions per place. [2024-06-21 19:15:57,386 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 317 selfloop transitions, 30 changer transitions 0/349 dead transitions. [2024-06-21 19:15:57,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 349 transitions, 5654 flow [2024-06-21 19:15:57,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:15:57,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:15:57,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-06-21 19:15:57,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3313782991202346 [2024-06-21 19:15:57,387 INFO L175 Difference]: Start difference. First operand has 354 places, 327 transitions, 4870 flow. Second operand 11 states and 113 transitions. [2024-06-21 19:15:57,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 349 transitions, 5654 flow [2024-06-21 19:15:57,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 349 transitions, 5342 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-21 19:15:57,778 INFO L231 Difference]: Finished difference. Result has 357 places, 329 transitions, 4670 flow [2024-06-21 19:15:57,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4558, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4670, PETRI_PLACES=357, PETRI_TRANSITIONS=329} [2024-06-21 19:15:57,779 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 327 predicate places. [2024-06-21 19:15:57,779 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 329 transitions, 4670 flow [2024-06-21 19:15:57,779 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 19:15:57,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:15:57,779 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 19:15:57,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-21 19:15:57,779 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 19:15:57,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:15:57,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1992674625, now seen corresponding path program 2 times [2024-06-21 19:15:57,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:15:57,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805080728] [2024-06-21 19:15:57,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:15:57,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:15:57,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:15:58,708 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 19:15:58,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:15:58,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805080728] [2024-06-21 19:15:58,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805080728] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:15:58,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:15:58,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:15:58,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015905168] [2024-06-21 19:15:58,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:15:58,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:15:58,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:15:58,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:15:58,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:15:58,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-21 19:15:58,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 329 transitions, 4670 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 19:15:58,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:15:58,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-21 19:15:58,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:15:59,131 INFO L124 PetriNetUnfolderBase]: 620/1154 cut-off events. [2024-06-21 19:15:59,132 INFO L125 PetriNetUnfolderBase]: For 99608/99613 co-relation queries the response was YES. [2024-06-21 19:15:59,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9122 conditions, 1154 events. 620/1154 cut-off events. For 99608/99613 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 6333 event pairs, 17 based on Foata normal form. 7/1159 useless extension candidates. Maximal degree in co-relation 8987. Up to 655 conditions per place. [2024-06-21 19:15:59,145 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 179 selfloop transitions, 64 changer transitions 0/349 dead transitions. [2024-06-21 19:15:59,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 349 transitions, 5311 flow [2024-06-21 19:15:59,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:15:59,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:15:59,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-21 19:15:59,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4157706093189964 [2024-06-21 19:15:59,146 INFO L175 Difference]: Start difference. First operand has 357 places, 329 transitions, 4670 flow. Second operand 9 states and 116 transitions. [2024-06-21 19:15:59,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 349 transitions, 5311 flow [2024-06-21 19:15:59,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 349 transitions, 5176 flow, removed 36 selfloop flow, removed 9 redundant places. [2024-06-21 19:15:59,589 INFO L231 Difference]: Finished difference. Result has 358 places, 335 transitions, 4845 flow [2024-06-21 19:15:59,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4572, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4845, PETRI_PLACES=358, PETRI_TRANSITIONS=335} [2024-06-21 19:15:59,590 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 328 predicate places. [2024-06-21 19:15:59,590 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 335 transitions, 4845 flow [2024-06-21 19:15:59,591 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 19:15:59,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:15:59,591 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 19:15:59,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-21 19:15:59,591 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 19:15:59,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:15:59,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1571232309, now seen corresponding path program 1 times [2024-06-21 19:15:59,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:15:59,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973442127] [2024-06-21 19:15:59,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:15:59,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:15:59,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:16:01,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:16:01,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:16:01,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973442127] [2024-06-21 19:16:01,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973442127] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:16:01,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:16:01,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:16:01,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102340793] [2024-06-21 19:16:01,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:16:01,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:16:01,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:16:01,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:16:01,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:16:01,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:16:01,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 335 transitions, 4845 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 19:16:01,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:16:01,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:16:01,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:16:01,594 INFO L124 PetriNetUnfolderBase]: 683/1220 cut-off events. [2024-06-21 19:16:01,594 INFO L125 PetriNetUnfolderBase]: For 92611/92611 co-relation queries the response was YES. [2024-06-21 19:16:01,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9608 conditions, 1220 events. 683/1220 cut-off events. For 92611/92611 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 6459 event pairs, 94 based on Foata normal form. 1/1221 useless extension candidates. Maximal degree in co-relation 9471. Up to 1031 conditions per place. [2024-06-21 19:16:01,608 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 271 selfloop transitions, 76 changer transitions 0/349 dead transitions. [2024-06-21 19:16:01,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 349 transitions, 5597 flow [2024-06-21 19:16:01,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:16:01,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:16:01,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-21 19:16:01,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36200716845878134 [2024-06-21 19:16:01,610 INFO L175 Difference]: Start difference. First operand has 358 places, 335 transitions, 4845 flow. Second operand 9 states and 101 transitions. [2024-06-21 19:16:01,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 349 transitions, 5597 flow [2024-06-21 19:16:02,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 349 transitions, 5446 flow, removed 26 selfloop flow, removed 11 redundant places. [2024-06-21 19:16:02,032 INFO L231 Difference]: Finished difference. Result has 356 places, 335 transitions, 4873 flow [2024-06-21 19:16:02,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4704, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4873, PETRI_PLACES=356, PETRI_TRANSITIONS=335} [2024-06-21 19:16:02,033 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 326 predicate places. [2024-06-21 19:16:02,033 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 335 transitions, 4873 flow [2024-06-21 19:16:02,033 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 19:16:02,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:16:02,033 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 19:16:02,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-21 19:16:02,033 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 19:16:02,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:16:02,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1505288059, now seen corresponding path program 3 times [2024-06-21 19:16:02,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:16:02,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704268703] [2024-06-21 19:16:02,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:16:02,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:16:02,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:16:03,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:16:03,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:16:03,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704268703] [2024-06-21 19:16:03,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704268703] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:16:03,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:16:03,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:16:03,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289317466] [2024-06-21 19:16:03,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:16:03,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:16:03,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:16:03,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:16:03,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:16:03,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:16:03,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 335 transitions, 4873 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 19:16:03,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:16:03,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:16:03,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:16:04,032 INFO L124 PetriNetUnfolderBase]: 691/1236 cut-off events. [2024-06-21 19:16:04,032 INFO L125 PetriNetUnfolderBase]: For 88519/88519 co-relation queries the response was YES. [2024-06-21 19:16:04,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9572 conditions, 1236 events. 691/1236 cut-off events. For 88519/88519 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 6540 event pairs, 76 based on Foata normal form. 2/1238 useless extension candidates. Maximal degree in co-relation 9440. Up to 1131 conditions per place. [2024-06-21 19:16:04,043 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 310 selfloop transitions, 44 changer transitions 0/356 dead transitions. [2024-06-21 19:16:04,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 356 transitions, 5697 flow [2024-06-21 19:16:04,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:16:04,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:16:04,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 123 transitions. [2024-06-21 19:16:04,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33064516129032256 [2024-06-21 19:16:04,045 INFO L175 Difference]: Start difference. First operand has 356 places, 335 transitions, 4873 flow. Second operand 12 states and 123 transitions. [2024-06-21 19:16:04,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 356 transitions, 5697 flow [2024-06-21 19:16:04,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 356 transitions, 5375 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-21 19:16:04,411 INFO L231 Difference]: Finished difference. Result has 358 places, 338 transitions, 4729 flow [2024-06-21 19:16:04,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4556, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4729, PETRI_PLACES=358, PETRI_TRANSITIONS=338} [2024-06-21 19:16:04,412 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 328 predicate places. [2024-06-21 19:16:04,412 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 338 transitions, 4729 flow [2024-06-21 19:16:04,412 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 19:16:04,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:16:04,412 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 19:16:04,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-21 19:16:04,412 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 19:16:04,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:16:04,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1406972907, now seen corresponding path program 4 times [2024-06-21 19:16:04,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:16:04,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488853656] [2024-06-21 19:16:04,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:16:04,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:16:04,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:16:05,658 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 19:16:05,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:16:05,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488853656] [2024-06-21 19:16:05,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488853656] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:16:05,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:16:05,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:16:05,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502496281] [2024-06-21 19:16:05,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:16:05,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:16:05,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:16:05,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:16:05,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:16:05,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:16:05,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 338 transitions, 4729 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 19:16:05,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:16:05,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:16:05,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:16:06,178 INFO L124 PetriNetUnfolderBase]: 711/1275 cut-off events. [2024-06-21 19:16:06,179 INFO L125 PetriNetUnfolderBase]: For 89305/89305 co-relation queries the response was YES. [2024-06-21 19:16:06,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9680 conditions, 1275 events. 711/1275 cut-off events. For 89305/89305 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 6837 event pairs, 107 based on Foata normal form. 2/1277 useless extension candidates. Maximal degree in co-relation 9545. Up to 1126 conditions per place. [2024-06-21 19:16:06,193 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 310 selfloop transitions, 48 changer transitions 0/360 dead transitions. [2024-06-21 19:16:06,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 360 transitions, 5577 flow [2024-06-21 19:16:06,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:16:06,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:16:06,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-21 19:16:06,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34017595307917886 [2024-06-21 19:16:06,194 INFO L175 Difference]: Start difference. First operand has 358 places, 338 transitions, 4729 flow. Second operand 11 states and 116 transitions. [2024-06-21 19:16:06,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 360 transitions, 5577 flow [2024-06-21 19:16:06,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 360 transitions, 5393 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-21 19:16:06,611 INFO L231 Difference]: Finished difference. Result has 362 places, 343 transitions, 4756 flow [2024-06-21 19:16:06,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4545, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4756, PETRI_PLACES=362, PETRI_TRANSITIONS=343} [2024-06-21 19:16:06,611 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 332 predicate places. [2024-06-21 19:16:06,611 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 343 transitions, 4756 flow [2024-06-21 19:16:06,611 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 19:16:06,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:16:06,612 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 19:16:06,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-21 19:16:06,612 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 19:16:06,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:16:06,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1162810275, now seen corresponding path program 5 times [2024-06-21 19:16:06,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:16:06,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049814599] [2024-06-21 19:16:06,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:16:06,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:16:06,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:16:07,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:16:07,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:16:07,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049814599] [2024-06-21 19:16:07,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049814599] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:16:07,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:16:07,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:16:07,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213537022] [2024-06-21 19:16:07,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:16:07,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:16:07,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:16:07,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:16:07,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:16:07,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:16:07,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 343 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 19:16:07,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:16:07,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:16:07,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:16:08,408 INFO L124 PetriNetUnfolderBase]: 719/1291 cut-off events. [2024-06-21 19:16:08,409 INFO L125 PetriNetUnfolderBase]: For 91625/91625 co-relation queries the response was YES. [2024-06-21 19:16:08,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9796 conditions, 1291 events. 719/1291 cut-off events. For 91625/91625 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 6950 event pairs, 99 based on Foata normal form. 2/1293 useless extension candidates. Maximal degree in co-relation 9659. Up to 1096 conditions per place. [2024-06-21 19:16:08,430 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 316 selfloop transitions, 47 changer transitions 0/365 dead transitions. [2024-06-21 19:16:08,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 365 transitions, 5619 flow [2024-06-21 19:16:08,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:16:08,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:16:08,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-21 19:16:08,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36129032258064514 [2024-06-21 19:16:08,431 INFO L175 Difference]: Start difference. First operand has 362 places, 343 transitions, 4756 flow. Second operand 10 states and 112 transitions. [2024-06-21 19:16:08,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 365 transitions, 5619 flow [2024-06-21 19:16:08,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 365 transitions, 5501 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-06-21 19:16:08,918 INFO L231 Difference]: Finished difference. Result has 366 places, 347 transitions, 4855 flow [2024-06-21 19:16:08,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4638, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4855, PETRI_PLACES=366, PETRI_TRANSITIONS=347} [2024-06-21 19:16:08,919 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 336 predicate places. [2024-06-21 19:16:08,919 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 347 transitions, 4855 flow [2024-06-21 19:16:08,919 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 19:16:08,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:16:08,919 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 19:16:08,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-21 19:16:08,919 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 19:16:08,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:16:08,920 INFO L85 PathProgramCache]: Analyzing trace with hash 691751815, now seen corresponding path program 1 times [2024-06-21 19:16:08,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:16:08,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099580857] [2024-06-21 19:16:08,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:16:08,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:16:08,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:16:10,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:16:10,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:16:10,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099580857] [2024-06-21 19:16:10,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099580857] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:16:10,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:16:10,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:16:10,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790491261] [2024-06-21 19:16:10,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:16:10,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:16:10,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:16:10,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:16:10,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:16:10,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:16:10,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 347 transitions, 4855 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:16:10,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:16:10,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:16:10,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:16:11,148 INFO L124 PetriNetUnfolderBase]: 725/1302 cut-off events. [2024-06-21 19:16:11,148 INFO L125 PetriNetUnfolderBase]: For 95206/95206 co-relation queries the response was YES. [2024-06-21 19:16:11,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9951 conditions, 1302 events. 725/1302 cut-off events. For 95206/95206 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 7021 event pairs, 80 based on Foata normal form. 2/1304 useless extension candidates. Maximal degree in co-relation 9812. Up to 1150 conditions per place. [2024-06-21 19:16:11,164 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 305 selfloop transitions, 58 changer transitions 0/365 dead transitions. [2024-06-21 19:16:11,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 365 transitions, 5688 flow [2024-06-21 19:16:11,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:16:11,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:16:11,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-21 19:16:11,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36950146627565983 [2024-06-21 19:16:11,167 INFO L175 Difference]: Start difference. First operand has 366 places, 347 transitions, 4855 flow. Second operand 11 states and 126 transitions. [2024-06-21 19:16:11,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 365 transitions, 5688 flow [2024-06-21 19:16:11,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 365 transitions, 5527 flow, removed 40 selfloop flow, removed 7 redundant places. [2024-06-21 19:16:11,642 INFO L231 Difference]: Finished difference. Result has 370 places, 349 transitions, 4856 flow [2024-06-21 19:16:11,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4694, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4856, PETRI_PLACES=370, PETRI_TRANSITIONS=349} [2024-06-21 19:16:11,642 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 340 predicate places. [2024-06-21 19:16:11,642 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 349 transitions, 4856 flow [2024-06-21 19:16:11,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:16:11,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:16:11,643 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 19:16:11,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-21 19:16:11,643 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 19:16:11,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:16:11,643 INFO L85 PathProgramCache]: Analyzing trace with hash -452079561, now seen corresponding path program 6 times [2024-06-21 19:16:11,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:16:11,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819389253] [2024-06-21 19:16:11,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:16:11,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:16:11,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:16:12,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:16:12,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:16:12,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819389253] [2024-06-21 19:16:12,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819389253] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:16:12,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:16:12,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:16:12,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768989006] [2024-06-21 19:16:12,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:16:12,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:16:12,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:16:12,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:16:12,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:16:12,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:16:12,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 349 transitions, 4856 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 19:16:12,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:16:12,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:16:12,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:16:13,423 INFO L124 PetriNetUnfolderBase]: 729/1309 cut-off events. [2024-06-21 19:16:13,423 INFO L125 PetriNetUnfolderBase]: For 95839/95839 co-relation queries the response was YES. [2024-06-21 19:16:13,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9935 conditions, 1309 events. 729/1309 cut-off events. For 95839/95839 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 7052 event pairs, 74 based on Foata normal form. 2/1311 useless extension candidates. Maximal degree in co-relation 9795. Up to 1214 conditions per place. [2024-06-21 19:16:13,436 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 341 selfloop transitions, 27 changer transitions 0/370 dead transitions. [2024-06-21 19:16:13,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 370 transitions, 5696 flow [2024-06-21 19:16:13,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:16:13,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:16:13,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-21 19:16:13,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3343108504398827 [2024-06-21 19:16:13,437 INFO L175 Difference]: Start difference. First operand has 370 places, 349 transitions, 4856 flow. Second operand 11 states and 114 transitions. [2024-06-21 19:16:13,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 370 transitions, 5696 flow [2024-06-21 19:16:13,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 370 transitions, 5552 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-21 19:16:13,916 INFO L231 Difference]: Finished difference. Result has 373 places, 351 transitions, 4832 flow [2024-06-21 19:16:13,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4712, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4832, PETRI_PLACES=373, PETRI_TRANSITIONS=351} [2024-06-21 19:16:13,917 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 343 predicate places. [2024-06-21 19:16:13,917 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 351 transitions, 4832 flow [2024-06-21 19:16:13,918 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 19:16:13,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:16:13,918 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 19:16:13,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-21 19:16:13,918 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 19:16:13,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:16:13,918 INFO L85 PathProgramCache]: Analyzing trace with hash 940604219, now seen corresponding path program 7 times [2024-06-21 19:16:13,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:16:13,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399906466] [2024-06-21 19:16:13,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:16:13,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:16:13,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:16:15,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:16:15,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:16:15,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399906466] [2024-06-21 19:16:15,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399906466] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:16:15,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:16:15,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:16:15,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103757326] [2024-06-21 19:16:15,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:16:15,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:16:15,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:16:15,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:16:15,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:16:15,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:16:15,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 351 transitions, 4832 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 19:16:15,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:16:15,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:16:15,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:16:16,017 INFO L124 PetriNetUnfolderBase]: 756/1362 cut-off events. [2024-06-21 19:16:16,018 INFO L125 PetriNetUnfolderBase]: For 107572/107572 co-relation queries the response was YES. [2024-06-21 19:16:16,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10452 conditions, 1362 events. 756/1362 cut-off events. For 107572/107572 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 7455 event pairs, 79 based on Foata normal form. 2/1364 useless extension candidates. Maximal degree in co-relation 10310. Up to 1191 conditions per place. [2024-06-21 19:16:16,032 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 335 selfloop transitions, 40 changer transitions 0/377 dead transitions. [2024-06-21 19:16:16,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 377 transitions, 5981 flow [2024-06-21 19:16:16,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:16:16,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:16:16,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-21 19:16:16,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489736070381232 [2024-06-21 19:16:16,033 INFO L175 Difference]: Start difference. First operand has 373 places, 351 transitions, 4832 flow. Second operand 11 states and 119 transitions. [2024-06-21 19:16:16,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 377 transitions, 5981 flow [2024-06-21 19:16:16,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 377 transitions, 5875 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-21 19:16:16,554 INFO L231 Difference]: Finished difference. Result has 377 places, 359 transitions, 5019 flow [2024-06-21 19:16:16,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4726, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5019, PETRI_PLACES=377, PETRI_TRANSITIONS=359} [2024-06-21 19:16:16,554 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 347 predicate places. [2024-06-21 19:16:16,554 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 359 transitions, 5019 flow [2024-06-21 19:16:16,554 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 19:16:16,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:16:16,555 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 19:16:16,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-21 19:16:16,555 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 19:16:16,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:16:16,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1556092281, now seen corresponding path program 8 times [2024-06-21 19:16:16,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:16:16,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874562273] [2024-06-21 19:16:16,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:16:16,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:16:16,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:16:17,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:16:17,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:16:17,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874562273] [2024-06-21 19:16:17,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874562273] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:16:17,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:16:17,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:16:17,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900071583] [2024-06-21 19:16:17,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:16:17,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:16:17,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:16:17,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:16:17,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:16:17,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:16:17,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 359 transitions, 5019 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 19:16:17,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:16:17,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:16:17,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:16:18,458 INFO L124 PetriNetUnfolderBase]: 764/1378 cut-off events. [2024-06-21 19:16:18,458 INFO L125 PetriNetUnfolderBase]: For 110708/110708 co-relation queries the response was YES. [2024-06-21 19:16:18,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10652 conditions, 1378 events. 764/1378 cut-off events. For 110708/110708 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 7580 event pairs, 91 based on Foata normal form. 2/1380 useless extension candidates. Maximal degree in co-relation 10507. Up to 1274 conditions per place. [2024-06-21 19:16:18,473 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 334 selfloop transitions, 40 changer transitions 0/376 dead transitions. [2024-06-21 19:16:18,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 376 transitions, 5873 flow [2024-06-21 19:16:18,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:16:18,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:16:18,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-21 19:16:18,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34017595307917886 [2024-06-21 19:16:18,474 INFO L175 Difference]: Start difference. First operand has 377 places, 359 transitions, 5019 flow. Second operand 11 states and 116 transitions. [2024-06-21 19:16:18,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 376 transitions, 5873 flow [2024-06-21 19:16:18,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 376 transitions, 5708 flow, removed 62 selfloop flow, removed 6 redundant places. [2024-06-21 19:16:18,991 INFO L231 Difference]: Finished difference. Result has 382 places, 361 transitions, 5012 flow [2024-06-21 19:16:18,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4872, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5012, PETRI_PLACES=382, PETRI_TRANSITIONS=361} [2024-06-21 19:16:18,992 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 352 predicate places. [2024-06-21 19:16:18,992 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 361 transitions, 5012 flow [2024-06-21 19:16:18,992 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 19:16:18,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:16:18,992 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 19:16:18,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-21 19:16:18,992 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 19:16:18,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:16:18,993 INFO L85 PathProgramCache]: Analyzing trace with hash -777624167, now seen corresponding path program 9 times [2024-06-21 19:16:18,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:16:18,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489576828] [2024-06-21 19:16:18,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:16:18,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:16:19,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:16:20,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:16:20,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:16:20,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489576828] [2024-06-21 19:16:20,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489576828] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:16:20,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:16:20,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:16:20,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043671315] [2024-06-21 19:16:20,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:16:20,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:16:20,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:16:20,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:16:20,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:16:20,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:16:20,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 361 transitions, 5012 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 19:16:20,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:16:20,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:16:20,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:16:20,907 INFO L124 PetriNetUnfolderBase]: 761/1373 cut-off events. [2024-06-21 19:16:20,907 INFO L125 PetriNetUnfolderBase]: For 103081/103081 co-relation queries the response was YES. [2024-06-21 19:16:20,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10290 conditions, 1373 events. 761/1373 cut-off events. For 103081/103081 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 7553 event pairs, 86 based on Foata normal form. 2/1375 useless extension candidates. Maximal degree in co-relation 10143. Up to 1241 conditions per place. [2024-06-21 19:16:20,923 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 334 selfloop transitions, 41 changer transitions 0/377 dead transitions. [2024-06-21 19:16:20,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 377 transitions, 5802 flow [2024-06-21 19:16:20,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:16:20,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:16:20,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-21 19:16:20,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34310850439882695 [2024-06-21 19:16:20,924 INFO L175 Difference]: Start difference. First operand has 382 places, 361 transitions, 5012 flow. Second operand 11 states and 117 transitions. [2024-06-21 19:16:20,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 377 transitions, 5802 flow [2024-06-21 19:16:21,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 377 transitions, 5669 flow, removed 36 selfloop flow, removed 7 redundant places. [2024-06-21 19:16:21,450 INFO L231 Difference]: Finished difference. Result has 386 places, 361 transitions, 4967 flow [2024-06-21 19:16:21,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4879, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4967, PETRI_PLACES=386, PETRI_TRANSITIONS=361} [2024-06-21 19:16:21,450 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 356 predicate places. [2024-06-21 19:16:21,450 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 361 transitions, 4967 flow [2024-06-21 19:16:21,451 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 19:16:21,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:16:21,451 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 19:16:21,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-21 19:16:21,451 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 19:16:21,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:16:21,451 INFO L85 PathProgramCache]: Analyzing trace with hash 292402719, now seen corresponding path program 2 times [2024-06-21 19:16:21,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:16:21,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836088188] [2024-06-21 19:16:21,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:16:21,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:16:21,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:16:23,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:16:23,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:16:23,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836088188] [2024-06-21 19:16:23,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836088188] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:16:23,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:16:23,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:16:23,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895530918] [2024-06-21 19:16:23,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:16:23,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:16:23,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:16:23,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:16:23,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:16:23,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:16:23,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 361 transitions, 4967 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 19:16:23,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:16:23,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:16:23,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:16:23,654 INFO L124 PetriNetUnfolderBase]: 770/1388 cut-off events. [2024-06-21 19:16:23,654 INFO L125 PetriNetUnfolderBase]: For 105024/105024 co-relation queries the response was YES. [2024-06-21 19:16:23,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10307 conditions, 1388 events. 770/1388 cut-off events. For 105024/105024 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 7647 event pairs, 93 based on Foata normal form. 2/1390 useless extension candidates. Maximal degree in co-relation 10159. Up to 1148 conditions per place. [2024-06-21 19:16:23,666 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 269 selfloop transitions, 106 changer transitions 0/377 dead transitions. [2024-06-21 19:16:23,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 377 transitions, 5813 flow [2024-06-21 19:16:23,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:16:23,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:16:23,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-21 19:16:23,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-21 19:16:23,667 INFO L175 Difference]: Start difference. First operand has 386 places, 361 transitions, 4967 flow. Second operand 10 states and 120 transitions. [2024-06-21 19:16:23,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 377 transitions, 5813 flow [2024-06-21 19:16:24,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 377 transitions, 5731 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-21 19:16:24,204 INFO L231 Difference]: Finished difference. Result has 387 places, 365 transitions, 5168 flow [2024-06-21 19:16:24,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4885, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5168, PETRI_PLACES=387, PETRI_TRANSITIONS=365} [2024-06-21 19:16:24,205 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 357 predicate places. [2024-06-21 19:16:24,205 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 365 transitions, 5168 flow [2024-06-21 19:16:24,205 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 19:16:24,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:16:24,205 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 19:16:24,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-21 19:16:24,205 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 19:16:24,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:16:24,206 INFO L85 PathProgramCache]: Analyzing trace with hash 298898149, now seen corresponding path program 1 times [2024-06-21 19:16:24,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:16:24,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637955201] [2024-06-21 19:16:24,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:16:24,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:16:24,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:16:25,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:16:25,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:16:25,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637955201] [2024-06-21 19:16:25,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637955201] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:16:25,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:16:25,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:16:25,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074396652] [2024-06-21 19:16:25,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:16:25,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:16:25,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:16:25,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:16:25,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:16:26,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:16:26,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 365 transitions, 5168 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 19:16:26,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:16:26,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:16:26,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:16:26,460 INFO L124 PetriNetUnfolderBase]: 793/1437 cut-off events. [2024-06-21 19:16:26,460 INFO L125 PetriNetUnfolderBase]: For 146596/146596 co-relation queries the response was YES. [2024-06-21 19:16:26,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10816 conditions, 1437 events. 793/1437 cut-off events. For 146596/146596 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 7933 event pairs, 98 based on Foata normal form. 12/1449 useless extension candidates. Maximal degree in co-relation 10668. Up to 1156 conditions per place. [2024-06-21 19:16:26,476 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 275 selfloop transitions, 105 changer transitions 5/387 dead transitions. [2024-06-21 19:16:26,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 387 transitions, 6143 flow [2024-06-21 19:16:26,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:16:26,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:16:26,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-21 19:16:26,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4096774193548387 [2024-06-21 19:16:26,477 INFO L175 Difference]: Start difference. First operand has 387 places, 365 transitions, 5168 flow. Second operand 10 states and 127 transitions. [2024-06-21 19:16:26,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 387 transitions, 6143 flow [2024-06-21 19:16:27,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 387 transitions, 5715 flow, removed 34 selfloop flow, removed 10 redundant places. [2024-06-21 19:16:27,044 INFO L231 Difference]: Finished difference. Result has 388 places, 369 transitions, 5089 flow [2024-06-21 19:16:27,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4773, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5089, PETRI_PLACES=388, PETRI_TRANSITIONS=369} [2024-06-21 19:16:27,044 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 358 predicate places. [2024-06-21 19:16:27,045 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 369 transitions, 5089 flow [2024-06-21 19:16:27,045 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 19:16:27,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:16:27,045 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 19:16:27,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-21 19:16:27,045 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 19:16:27,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:16:27,045 INFO L85 PathProgramCache]: Analyzing trace with hash 298897839, now seen corresponding path program 3 times [2024-06-21 19:16:27,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:16:27,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968614039] [2024-06-21 19:16:27,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:16:27,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:16:27,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:16:28,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:16:28,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:16:28,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968614039] [2024-06-21 19:16:28,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968614039] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:16:28,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:16:28,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:16:28,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495706354] [2024-06-21 19:16:28,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:16:28,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:16:28,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:16:28,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:16:28,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:16:28,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:16:28,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 369 transitions, 5089 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 19:16:28,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:16:28,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:16:28,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:16:29,404 INFO L124 PetriNetUnfolderBase]: 782/1412 cut-off events. [2024-06-21 19:16:29,404 INFO L125 PetriNetUnfolderBase]: For 106950/106950 co-relation queries the response was YES. [2024-06-21 19:16:29,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10660 conditions, 1412 events. 782/1412 cut-off events. For 106950/106950 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 7819 event pairs, 93 based on Foata normal form. 2/1414 useless extension candidates. Maximal degree in co-relation 10511. Up to 1168 conditions per place. [2024-06-21 19:16:29,421 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 274 selfloop transitions, 108 changer transitions 0/384 dead transitions. [2024-06-21 19:16:29,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 384 transitions, 5949 flow [2024-06-21 19:16:29,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:16:29,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:16:29,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-21 19:16:29,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-21 19:16:29,423 INFO L175 Difference]: Start difference. First operand has 388 places, 369 transitions, 5089 flow. Second operand 10 states and 124 transitions. [2024-06-21 19:16:29,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 384 transitions, 5949 flow [2024-06-21 19:16:29,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 384 transitions, 5731 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-06-21 19:16:29,985 INFO L231 Difference]: Finished difference. Result has 392 places, 371 transitions, 5140 flow [2024-06-21 19:16:29,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4871, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5140, PETRI_PLACES=392, PETRI_TRANSITIONS=371} [2024-06-21 19:16:29,985 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 362 predicate places. [2024-06-21 19:16:29,985 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 371 transitions, 5140 flow [2024-06-21 19:16:29,985 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 19:16:29,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:16:29,986 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 19:16:29,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-21 19:16:29,986 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 19:16:29,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:16:29,986 INFO L85 PathProgramCache]: Analyzing trace with hash 587622617, now seen corresponding path program 10 times [2024-06-21 19:16:29,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:16:29,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98399324] [2024-06-21 19:16:29,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:16:29,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:16:29,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:16:31,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:16:31,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:16:31,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98399324] [2024-06-21 19:16:31,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98399324] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:16:31,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:16:31,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:16:31,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564931229] [2024-06-21 19:16:31,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:16:31,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:16:31,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:16:31,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:16:31,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:16:31,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:16:31,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 371 transitions, 5140 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 19:16:31,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:16:31,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:16:31,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:16:31,863 INFO L124 PetriNetUnfolderBase]: 786/1420 cut-off events. [2024-06-21 19:16:31,863 INFO L125 PetriNetUnfolderBase]: For 111006/111006 co-relation queries the response was YES. [2024-06-21 19:16:31,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10783 conditions, 1420 events. 786/1420 cut-off events. For 111006/111006 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 7867 event pairs, 94 based on Foata normal form. 2/1422 useless extension candidates. Maximal degree in co-relation 10632. Up to 1325 conditions per place. [2024-06-21 19:16:31,878 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 360 selfloop transitions, 27 changer transitions 0/389 dead transitions. [2024-06-21 19:16:31,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 389 transitions, 6018 flow [2024-06-21 19:16:31,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:16:31,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:16:31,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 111 transitions. [2024-06-21 19:16:31,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3255131964809384 [2024-06-21 19:16:31,879 INFO L175 Difference]: Start difference. First operand has 392 places, 371 transitions, 5140 flow. Second operand 11 states and 111 transitions. [2024-06-21 19:16:31,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 389 transitions, 6018 flow [2024-06-21 19:16:32,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 389 transitions, 5765 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-21 19:16:32,421 INFO L231 Difference]: Finished difference. Result has 396 places, 373 transitions, 5015 flow [2024-06-21 19:16:32,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4887, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5015, PETRI_PLACES=396, PETRI_TRANSITIONS=373} [2024-06-21 19:16:32,422 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 366 predicate places. [2024-06-21 19:16:32,422 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 373 transitions, 5015 flow [2024-06-21 19:16:32,422 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 19:16:32,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:16:32,422 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 19:16:32,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-21 19:16:32,422 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 19:16:32,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:16:32,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1414051269, now seen corresponding path program 11 times [2024-06-21 19:16:32,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:16:32,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054569239] [2024-06-21 19:16:32,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:16:32,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:16:32,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:16:33,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:16:33,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:16:33,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054569239] [2024-06-21 19:16:33,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054569239] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:16:33,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:16:33,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:16:33,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717810235] [2024-06-21 19:16:33,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:16:33,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:16:33,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:16:33,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:16:33,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:16:33,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:16:33,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 373 transitions, 5015 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 19:16:33,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:16:33,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:16:33,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:16:34,390 INFO L124 PetriNetUnfolderBase]: 801/1449 cut-off events. [2024-06-21 19:16:34,390 INFO L125 PetriNetUnfolderBase]: For 124019/124019 co-relation queries the response was YES. [2024-06-21 19:16:34,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11039 conditions, 1449 events. 801/1449 cut-off events. For 124019/124019 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 8099 event pairs, 97 based on Foata normal form. 2/1451 useless extension candidates. Maximal degree in co-relation 10885. Up to 1310 conditions per place. [2024-06-21 19:16:34,405 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 354 selfloop transitions, 36 changer transitions 0/392 dead transitions. [2024-06-21 19:16:34,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 392 transitions, 6129 flow [2024-06-21 19:16:34,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:16:34,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:16:34,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-21 19:16:34,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34017595307917886 [2024-06-21 19:16:34,407 INFO L175 Difference]: Start difference. First operand has 396 places, 373 transitions, 5015 flow. Second operand 11 states and 116 transitions. [2024-06-21 19:16:34,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 392 transitions, 6129 flow [2024-06-21 19:16:35,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 392 transitions, 6019 flow, removed 30 selfloop flow, removed 8 redundant places. [2024-06-21 19:16:35,009 INFO L231 Difference]: Finished difference. Result has 401 places, 377 transitions, 5107 flow [2024-06-21 19:16:35,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4905, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5107, PETRI_PLACES=401, PETRI_TRANSITIONS=377} [2024-06-21 19:16:35,010 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 371 predicate places. [2024-06-21 19:16:35,010 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 377 transitions, 5107 flow [2024-06-21 19:16:35,010 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 19:16:35,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:16:35,010 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 19:16:35,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-21 19:16:35,010 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 19:16:35,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:16:35,010 INFO L85 PathProgramCache]: Analyzing trace with hash 645835037, now seen corresponding path program 12 times [2024-06-21 19:16:35,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:16:35,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143890735] [2024-06-21 19:16:35,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:16:35,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:16:35,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:16:36,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:16:36,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:16:36,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143890735] [2024-06-21 19:16:36,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143890735] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:16:36,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:16:36,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:16:36,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318145299] [2024-06-21 19:16:36,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:16:36,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:16:36,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:16:36,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:16:36,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:16:36,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:16:36,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 377 transitions, 5107 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 19:16:36,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:16:36,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:16:36,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:16:37,166 INFO L124 PetriNetUnfolderBase]: 805/1457 cut-off events. [2024-06-21 19:16:37,166 INFO L125 PetriNetUnfolderBase]: For 126730/126730 co-relation queries the response was YES. [2024-06-21 19:16:37,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11106 conditions, 1457 events. 805/1457 cut-off events. For 126730/126730 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 8168 event pairs, 103 based on Foata normal form. 2/1459 useless extension candidates. Maximal degree in co-relation 10949. Up to 1357 conditions per place. [2024-06-21 19:16:37,183 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 349 selfloop transitions, 39 changer transitions 0/390 dead transitions. [2024-06-21 19:16:37,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 390 transitions, 5954 flow [2024-06-21 19:16:37,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:16:37,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:16:37,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-21 19:16:37,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-21 19:16:37,184 INFO L175 Difference]: Start difference. First operand has 401 places, 377 transitions, 5107 flow. Second operand 10 states and 108 transitions. [2024-06-21 19:16:37,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 390 transitions, 5954 flow [2024-06-21 19:16:37,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 390 transitions, 5829 flow, removed 42 selfloop flow, removed 6 redundant places. [2024-06-21 19:16:37,777 INFO L231 Difference]: Finished difference. Result has 405 places, 378 transitions, 5108 flow [2024-06-21 19:16:37,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4992, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5108, PETRI_PLACES=405, PETRI_TRANSITIONS=378} [2024-06-21 19:16:37,777 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 375 predicate places. [2024-06-21 19:16:37,777 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 378 transitions, 5108 flow [2024-06-21 19:16:37,777 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 19:16:37,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:16:37,777 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 19:16:37,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-21 19:16:37,778 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 19:16:37,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:16:37,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1963943733, now seen corresponding path program 13 times [2024-06-21 19:16:37,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:16:37,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374851093] [2024-06-21 19:16:37,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:16:37,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:16:37,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:16:39,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:16:39,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:16:39,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374851093] [2024-06-21 19:16:39,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374851093] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:16:39,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:16:39,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:16:39,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239967242] [2024-06-21 19:16:39,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:16:39,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:16:39,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:16:39,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:16:39,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:16:39,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:16:39,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 378 transitions, 5108 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 19:16:39,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:16:39,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:16:39,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:16:39,670 INFO L124 PetriNetUnfolderBase]: 802/1452 cut-off events. [2024-06-21 19:16:39,670 INFO L125 PetriNetUnfolderBase]: For 118231/118231 co-relation queries the response was YES. [2024-06-21 19:16:39,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10794 conditions, 1452 events. 802/1452 cut-off events. For 118231/118231 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 8143 event pairs, 100 based on Foata normal form. 2/1454 useless extension candidates. Maximal degree in co-relation 10635. Up to 1336 conditions per place. [2024-06-21 19:16:39,687 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 351 selfloop transitions, 38 changer transitions 0/391 dead transitions. [2024-06-21 19:16:39,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 391 transitions, 5918 flow [2024-06-21 19:16:39,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:16:39,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:16:39,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-21 19:16:39,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3343108504398827 [2024-06-21 19:16:39,688 INFO L175 Difference]: Start difference. First operand has 405 places, 378 transitions, 5108 flow. Second operand 11 states and 114 transitions. [2024-06-21 19:16:39,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 391 transitions, 5918 flow [2024-06-21 19:16:40,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 391 transitions, 5799 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-21 19:16:40,330 INFO L231 Difference]: Finished difference. Result has 409 places, 378 transitions, 5069 flow [2024-06-21 19:16:40,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4989, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5069, PETRI_PLACES=409, PETRI_TRANSITIONS=378} [2024-06-21 19:16:40,331 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 379 predicate places. [2024-06-21 19:16:40,331 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 378 transitions, 5069 flow [2024-06-21 19:16:40,332 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 19:16:40,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:16:40,332 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 19:16:40,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-21 19:16:40,332 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 19:16:40,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:16:40,333 INFO L85 PathProgramCache]: Analyzing trace with hash 611958627, now seen corresponding path program 14 times [2024-06-21 19:16:40,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:16:40,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424763121] [2024-06-21 19:16:40,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:16:40,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:16:40,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:16:42,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:16:42,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:16:42,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424763121] [2024-06-21 19:16:42,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424763121] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:16:42,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:16:42,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:16:42,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087380730] [2024-06-21 19:16:42,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:16:42,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:16:42,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:16:42,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:16:42,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:16:42,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:16:42,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 378 transitions, 5069 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 19:16:42,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:16:42,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:16:42,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:16:42,661 INFO L124 PetriNetUnfolderBase]: 806/1460 cut-off events. [2024-06-21 19:16:42,661 INFO L125 PetriNetUnfolderBase]: For 120678/120678 co-relation queries the response was YES. [2024-06-21 19:16:42,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10821 conditions, 1460 events. 806/1460 cut-off events. For 120678/120678 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 8223 event pairs, 102 based on Foata normal form. 2/1462 useless extension candidates. Maximal degree in co-relation 10661. Up to 1345 conditions per place. [2024-06-21 19:16:42,676 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 336 selfloop transitions, 53 changer transitions 0/391 dead transitions. [2024-06-21 19:16:42,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 391 transitions, 5915 flow [2024-06-21 19:16:42,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:16:42,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:16:42,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 124 transitions. [2024-06-21 19:16:42,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-21 19:16:42,677 INFO L175 Difference]: Start difference. First operand has 409 places, 378 transitions, 5069 flow. Second operand 12 states and 124 transitions. [2024-06-21 19:16:42,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 391 transitions, 5915 flow [2024-06-21 19:16:43,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 391 transitions, 5841 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-21 19:16:43,341 INFO L231 Difference]: Finished difference. Result has 412 places, 379 transitions, 5147 flow [2024-06-21 19:16:43,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4995, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5147, PETRI_PLACES=412, PETRI_TRANSITIONS=379} [2024-06-21 19:16:43,341 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 382 predicate places. [2024-06-21 19:16:43,341 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 379 transitions, 5147 flow [2024-06-21 19:16:43,341 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 19:16:43,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:16:43,341 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 19:16:43,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-21 19:16:43,342 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 19:16:43,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:16:43,342 INFO L85 PathProgramCache]: Analyzing trace with hash -467382863, now seen corresponding path program 15 times [2024-06-21 19:16:43,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:16:43,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074814029] [2024-06-21 19:16:43,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:16:43,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:16:43,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:16:44,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:16:44,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:16:44,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074814029] [2024-06-21 19:16:44,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074814029] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:16:44,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:16:44,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:16:44,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494462181] [2024-06-21 19:16:44,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:16:44,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:16:44,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:16:44,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:16:44,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:16:45,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:16:45,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 379 transitions, 5147 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 19:16:45,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:16:45,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:16:45,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:16:45,529 INFO L124 PetriNetUnfolderBase]: 813/1473 cut-off events. [2024-06-21 19:16:45,529 INFO L125 PetriNetUnfolderBase]: For 123641/123641 co-relation queries the response was YES. [2024-06-21 19:16:45,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11002 conditions, 1473 events. 813/1473 cut-off events. For 123641/123641 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 8289 event pairs, 106 based on Foata normal form. 2/1475 useless extension candidates. Maximal degree in co-relation 10842. Up to 1358 conditions per place. [2024-06-21 19:16:45,546 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 342 selfloop transitions, 50 changer transitions 0/394 dead transitions. [2024-06-21 19:16:45,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 394 transitions, 6021 flow [2024-06-21 19:16:45,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:16:45,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:16:45,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 124 transitions. [2024-06-21 19:16:45,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-21 19:16:45,547 INFO L175 Difference]: Start difference. First operand has 412 places, 379 transitions, 5147 flow. Second operand 12 states and 124 transitions. [2024-06-21 19:16:45,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 394 transitions, 6021 flow [2024-06-21 19:16:46,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 394 transitions, 5876 flow, removed 20 selfloop flow, removed 10 redundant places. [2024-06-21 19:16:46,121 INFO L231 Difference]: Finished difference. Result has 415 places, 382 transitions, 5177 flow [2024-06-21 19:16:46,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5002, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5177, PETRI_PLACES=415, PETRI_TRANSITIONS=382} [2024-06-21 19:16:46,122 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 385 predicate places. [2024-06-21 19:16:46,122 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 382 transitions, 5177 flow [2024-06-21 19:16:46,122 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 19:16:46,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:16:46,122 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 19:16:46,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-21 19:16:46,122 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 19:16:46,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:16:46,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1836141445, now seen corresponding path program 16 times [2024-06-21 19:16:46,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:16:46,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353771219] [2024-06-21 19:16:46,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:16:46,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:16:46,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:16:47,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:16:47,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:16:47,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353771219] [2024-06-21 19:16:47,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353771219] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:16:47,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:16:47,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:16:47,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915296532] [2024-06-21 19:16:47,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:16:47,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:16:47,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:16:47,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:16:47,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:16:47,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:16:47,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 382 transitions, 5177 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 19:16:47,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:16:47,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:16:47,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:16:48,433 INFO L124 PetriNetUnfolderBase]: 828/1502 cut-off events. [2024-06-21 19:16:48,433 INFO L125 PetriNetUnfolderBase]: For 137066/137066 co-relation queries the response was YES. [2024-06-21 19:16:48,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11432 conditions, 1502 events. 828/1502 cut-off events. For 137066/137066 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 8527 event pairs, 103 based on Foata normal form. 2/1504 useless extension candidates. Maximal degree in co-relation 11270. Up to 1314 conditions per place. [2024-06-21 19:16:48,450 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 339 selfloop transitions, 60 changer transitions 0/401 dead transitions. [2024-06-21 19:16:48,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 401 transitions, 6331 flow [2024-06-21 19:16:48,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:16:48,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:16:48,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-21 19:16:48,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-21 19:16:48,451 INFO L175 Difference]: Start difference. First operand has 415 places, 382 transitions, 5177 flow. Second operand 11 states and 124 transitions. [2024-06-21 19:16:48,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 401 transitions, 6331 flow [2024-06-21 19:16:49,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 401 transitions, 6198 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-21 19:16:49,139 INFO L231 Difference]: Finished difference. Result has 420 places, 386 transitions, 5311 flow [2024-06-21 19:16:49,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5044, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5311, PETRI_PLACES=420, PETRI_TRANSITIONS=386} [2024-06-21 19:16:49,140 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 390 predicate places. [2024-06-21 19:16:49,140 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 386 transitions, 5311 flow [2024-06-21 19:16:49,140 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 19:16:49,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:16:49,140 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 19:16:49,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-21 19:16:49,140 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 19:16:49,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:16:49,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1831379845, now seen corresponding path program 17 times [2024-06-21 19:16:49,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:16:49,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123596856] [2024-06-21 19:16:49,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:16:49,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:16:49,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:16:50,570 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 19:16:50,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:16:50,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123596856] [2024-06-21 19:16:50,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123596856] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:16:50,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:16:50,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:16:50,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276957430] [2024-06-21 19:16:50,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:16:50,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:16:50,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:16:50,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:16:50,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:16:50,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:16:50,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 386 transitions, 5311 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 19:16:50,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:16:50,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:16:50,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:16:51,156 INFO L124 PetriNetUnfolderBase]: 832/1510 cut-off events. [2024-06-21 19:16:51,156 INFO L125 PetriNetUnfolderBase]: For 140213/140213 co-relation queries the response was YES. [2024-06-21 19:16:51,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11563 conditions, 1510 events. 832/1510 cut-off events. For 140213/140213 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 8583 event pairs, 107 based on Foata normal form. 2/1512 useless extension candidates. Maximal degree in co-relation 11398. Up to 1360 conditions per place. [2024-06-21 19:16:51,173 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 342 selfloop transitions, 54 changer transitions 0/398 dead transitions. [2024-06-21 19:16:51,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 398 transitions, 6176 flow [2024-06-21 19:16:51,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:16:51,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:16:51,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-21 19:16:51,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36774193548387096 [2024-06-21 19:16:51,174 INFO L175 Difference]: Start difference. First operand has 420 places, 386 transitions, 5311 flow. Second operand 10 states and 114 transitions. [2024-06-21 19:16:51,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 398 transitions, 6176 flow [2024-06-21 19:16:51,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 398 transitions, 6017 flow, removed 52 selfloop flow, removed 5 redundant places. [2024-06-21 19:16:51,927 INFO L231 Difference]: Finished difference. Result has 425 places, 387 transitions, 5313 flow [2024-06-21 19:16:51,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5164, PETRI_DIFFERENCE_MINUEND_PLACES=415, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5313, PETRI_PLACES=425, PETRI_TRANSITIONS=387} [2024-06-21 19:16:51,928 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 395 predicate places. [2024-06-21 19:16:51,928 INFO L495 AbstractCegarLoop]: Abstraction has has 425 places, 387 transitions, 5313 flow [2024-06-21 19:16:51,928 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 19:16:51,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:16:51,928 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 19:16:51,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-21 19:16:51,928 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 19:16:51,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:16:51,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1665319045, now seen corresponding path program 18 times [2024-06-21 19:16:51,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:16:51,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28924767] [2024-06-21 19:16:51,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:16:51,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:16:51,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:16:53,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:16:53,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:16:53,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28924767] [2024-06-21 19:16:53,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28924767] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:16:53,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:16:53,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:16:53,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716982441] [2024-06-21 19:16:53,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:16:53,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:16:53,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:16:53,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:16:53,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:16:53,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:16:53,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 387 transitions, 5313 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 19:16:53,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:16:53,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:16:53,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:16:54,463 INFO L124 PetriNetUnfolderBase]: 836/1518 cut-off events. [2024-06-21 19:16:54,463 INFO L125 PetriNetUnfolderBase]: For 141212/141212 co-relation queries the response was YES. [2024-06-21 19:16:54,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11563 conditions, 1518 events. 836/1518 cut-off events. For 141212/141212 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 8665 event pairs, 109 based on Foata normal form. 2/1520 useless extension candidates. Maximal degree in co-relation 11396. Up to 1362 conditions per place. [2024-06-21 19:16:54,482 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 339 selfloop transitions, 58 changer transitions 0/399 dead transitions. [2024-06-21 19:16:54,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 399 transitions, 6170 flow [2024-06-21 19:16:54,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:16:54,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:16:54,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-21 19:16:54,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36451612903225805 [2024-06-21 19:16:54,483 INFO L175 Difference]: Start difference. First operand has 425 places, 387 transitions, 5313 flow. Second operand 10 states and 113 transitions. [2024-06-21 19:16:54,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 399 transitions, 6170 flow [2024-06-21 19:16:55,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 399 transitions, 6034 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-21 19:16:55,099 INFO L231 Difference]: Finished difference. Result has 427 places, 388 transitions, 5338 flow [2024-06-21 19:16:55,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5177, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5338, PETRI_PLACES=427, PETRI_TRANSITIONS=388} [2024-06-21 19:16:55,099 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 397 predicate places. [2024-06-21 19:16:55,099 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 388 transitions, 5338 flow [2024-06-21 19:16:55,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:16:55,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:16:55,099 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:16:55,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-21 19:16:55,100 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 19:16:55,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:16:55,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1665323695, now seen corresponding path program 19 times [2024-06-21 19:16:55,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:16:55,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461337216] [2024-06-21 19:16:55,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:16:55,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:16:55,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:16:56,603 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 19:16:56,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:16:56,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461337216] [2024-06-21 19:16:56,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461337216] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:16:56,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:16:56,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:16:56,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735755218] [2024-06-21 19:16:56,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:16:56,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:16:56,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:16:56,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:16:56,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:16:56,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:16:56,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 388 transitions, 5338 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 19:16:56,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:16:56,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:16:56,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:16:57,190 INFO L124 PetriNetUnfolderBase]: 844/1534 cut-off events. [2024-06-21 19:16:57,190 INFO L125 PetriNetUnfolderBase]: For 143863/143863 co-relation queries the response was YES. [2024-06-21 19:16:57,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11670 conditions, 1534 events. 844/1534 cut-off events. For 143863/143863 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 8801 event pairs, 109 based on Foata normal form. 2/1536 useless extension candidates. Maximal degree in co-relation 11502. Up to 1384 conditions per place. [2024-06-21 19:16:57,208 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 343 selfloop transitions, 58 changer transitions 0/403 dead transitions. [2024-06-21 19:16:57,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 403 transitions, 6215 flow [2024-06-21 19:16:57,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:16:57,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:16:57,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-21 19:16:57,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-21 19:16:57,209 INFO L175 Difference]: Start difference. First operand has 427 places, 388 transitions, 5338 flow. Second operand 11 states and 121 transitions. [2024-06-21 19:16:57,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 403 transitions, 6215 flow [2024-06-21 19:16:57,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 403 transitions, 6073 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-21 19:16:57,902 INFO L231 Difference]: Finished difference. Result has 431 places, 390 transitions, 5373 flow [2024-06-21 19:16:57,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5196, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5373, PETRI_PLACES=431, PETRI_TRANSITIONS=390} [2024-06-21 19:16:57,902 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 401 predicate places. [2024-06-21 19:16:57,902 INFO L495 AbstractCegarLoop]: Abstraction has has 431 places, 390 transitions, 5373 flow [2024-06-21 19:16:57,902 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 19:16:57,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:16:57,902 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 19:16:57,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-21 19:16:57,903 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 19:16:57,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:16:57,903 INFO L85 PathProgramCache]: Analyzing trace with hash -150832949, now seen corresponding path program 20 times [2024-06-21 19:16:57,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:16:57,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520248932] [2024-06-21 19:16:57,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:16:57,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:16:57,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:16:59,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:16:59,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:16:59,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520248932] [2024-06-21 19:16:59,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520248932] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:16:59,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:16:59,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:16:59,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991893227] [2024-06-21 19:16:59,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:16:59,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:16:59,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:16:59,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:16:59,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:16:59,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:16:59,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 390 transitions, 5373 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 19:16:59,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:16:59,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:16:59,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:00,465 INFO L124 PetriNetUnfolderBase]: 841/1529 cut-off events. [2024-06-21 19:17:00,465 INFO L125 PetriNetUnfolderBase]: For 135465/135465 co-relation queries the response was YES. [2024-06-21 19:17:00,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11420 conditions, 1529 events. 841/1529 cut-off events. For 135465/135465 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 8763 event pairs, 108 based on Foata normal form. 2/1531 useless extension candidates. Maximal degree in co-relation 11250. Up to 1378 conditions per place. [2024-06-21 19:17:00,483 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 343 selfloop transitions, 59 changer transitions 0/404 dead transitions. [2024-06-21 19:17:00,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 404 transitions, 6209 flow [2024-06-21 19:17:00,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:17:00,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:17:00,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-21 19:17:00,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-21 19:17:00,484 INFO L175 Difference]: Start difference. First operand has 431 places, 390 transitions, 5373 flow. Second operand 12 states and 132 transitions. [2024-06-21 19:17:00,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 404 transitions, 6209 flow [2024-06-21 19:17:01,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 404 transitions, 6051 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-06-21 19:17:01,178 INFO L231 Difference]: Finished difference. Result has 436 places, 390 transitions, 5337 flow [2024-06-21 19:17:01,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5215, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5337, PETRI_PLACES=436, PETRI_TRANSITIONS=390} [2024-06-21 19:17:01,178 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 406 predicate places. [2024-06-21 19:17:01,178 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 390 transitions, 5337 flow [2024-06-21 19:17:01,178 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 19:17:01,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:01,178 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 19:17:01,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-21 19:17:01,179 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 19:17:01,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:01,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1698281981, now seen corresponding path program 2 times [2024-06-21 19:17:01,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:01,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034920549] [2024-06-21 19:17:01,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:01,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:01,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:03,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:03,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:03,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034920549] [2024-06-21 19:17:03,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034920549] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:03,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:03,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:17:03,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641565411] [2024-06-21 19:17:03,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:03,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:17:03,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:03,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:17:03,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:17:03,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:17:03,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 390 transitions, 5337 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:03,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:03,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:17:03,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:03,626 INFO L124 PetriNetUnfolderBase]: 849/1545 cut-off events. [2024-06-21 19:17:03,626 INFO L125 PetriNetUnfolderBase]: For 148574/148574 co-relation queries the response was YES. [2024-06-21 19:17:03,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11479 conditions, 1545 events. 849/1545 cut-off events. For 148574/148574 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 8850 event pairs, 118 based on Foata normal form. 4/1549 useless extension candidates. Maximal degree in co-relation 11308. Up to 1206 conditions per place. [2024-06-21 19:17:03,647 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 271 selfloop transitions, 132 changer transitions 0/405 dead transitions. [2024-06-21 19:17:03,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 405 transitions, 6253 flow [2024-06-21 19:17:03,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:17:03,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:17:03,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-21 19:17:03,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-21 19:17:03,648 INFO L175 Difference]: Start difference. First operand has 436 places, 390 transitions, 5337 flow. Second operand 11 states and 132 transitions. [2024-06-21 19:17:03,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 405 transitions, 6253 flow [2024-06-21 19:17:04,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 405 transitions, 6102 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-21 19:17:04,403 INFO L231 Difference]: Finished difference. Result has 437 places, 394 transitions, 5553 flow [2024-06-21 19:17:04,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5186, PETRI_DIFFERENCE_MINUEND_PLACES=425, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5553, PETRI_PLACES=437, PETRI_TRANSITIONS=394} [2024-06-21 19:17:04,403 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 407 predicate places. [2024-06-21 19:17:04,403 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 394 transitions, 5553 flow [2024-06-21 19:17:04,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:04,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:04,404 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:17:04,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-21 19:17:04,404 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 19:17:04,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:04,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1616882615, now seen corresponding path program 4 times [2024-06-21 19:17:04,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:04,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250860618] [2024-06-21 19:17:04,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:04,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:04,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:06,159 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 19:17:06,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:06,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250860618] [2024-06-21 19:17:06,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250860618] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:06,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:06,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:17:06,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731187792] [2024-06-21 19:17:06,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:06,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:17:06,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:06,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:17:06,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:17:06,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:17:06,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 394 transitions, 5553 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 19:17:06,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:06,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:17:06,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:06,637 INFO L124 PetriNetUnfolderBase]: 858/1560 cut-off events. [2024-06-21 19:17:06,637 INFO L125 PetriNetUnfolderBase]: For 139959/139959 co-relation queries the response was YES. [2024-06-21 19:17:06,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11784 conditions, 1560 events. 858/1560 cut-off events. For 139959/139959 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 8964 event pairs, 116 based on Foata normal form. 2/1562 useless extension candidates. Maximal degree in co-relation 11613. Up to 1224 conditions per place. [2024-06-21 19:17:06,657 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 275 selfloop transitions, 132 changer transitions 0/409 dead transitions. [2024-06-21 19:17:06,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 409 transitions, 6473 flow [2024-06-21 19:17:06,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:17:06,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:17:06,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-21 19:17:06,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4096774193548387 [2024-06-21 19:17:06,658 INFO L175 Difference]: Start difference. First operand has 437 places, 394 transitions, 5553 flow. Second operand 10 states and 127 transitions. [2024-06-21 19:17:06,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 409 transitions, 6473 flow [2024-06-21 19:17:07,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 409 transitions, 6222 flow, removed 38 selfloop flow, removed 7 redundant places. [2024-06-21 19:17:07,451 INFO L231 Difference]: Finished difference. Result has 441 places, 398 transitions, 5644 flow [2024-06-21 19:17:07,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5302, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5644, PETRI_PLACES=441, PETRI_TRANSITIONS=398} [2024-06-21 19:17:07,451 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 411 predicate places. [2024-06-21 19:17:07,452 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 398 transitions, 5644 flow [2024-06-21 19:17:07,452 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 19:17:07,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:07,452 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 19:17:07,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-21 19:17:07,452 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 19:17:07,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:07,452 INFO L85 PathProgramCache]: Analyzing trace with hash -2009584907, now seen corresponding path program 21 times [2024-06-21 19:17:07,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:07,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143062642] [2024-06-21 19:17:07,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:07,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:07,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:08,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:08,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:08,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143062642] [2024-06-21 19:17:08,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143062642] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:08,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:08,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:17:08,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849033553] [2024-06-21 19:17:08,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:08,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:17:08,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:08,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:17:08,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:17:09,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:17:09,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 398 transitions, 5644 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 19:17:09,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:09,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:17:09,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:09,472 INFO L124 PetriNetUnfolderBase]: 862/1568 cut-off events. [2024-06-21 19:17:09,472 INFO L125 PetriNetUnfolderBase]: For 143558/143558 co-relation queries the response was YES. [2024-06-21 19:17:09,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12015 conditions, 1568 events. 862/1568 cut-off events. For 143558/143558 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 9020 event pairs, 116 based on Foata normal form. 2/1570 useless extension candidates. Maximal degree in co-relation 11842. Up to 1200 conditions per place. [2024-06-21 19:17:09,492 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 286 selfloop transitions, 121 changer transitions 0/409 dead transitions. [2024-06-21 19:17:09,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 409 transitions, 6526 flow [2024-06-21 19:17:09,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:17:09,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:17:09,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-21 19:17:09,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-21 19:17:09,493 INFO L175 Difference]: Start difference. First operand has 441 places, 398 transitions, 5644 flow. Second operand 11 states and 121 transitions. [2024-06-21 19:17:09,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 451 places, 409 transitions, 6526 flow [2024-06-21 19:17:10,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 409 transitions, 6226 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-21 19:17:10,265 INFO L231 Difference]: Finished difference. Result has 445 places, 399 transitions, 5638 flow [2024-06-21 19:17:10,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5344, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5638, PETRI_PLACES=445, PETRI_TRANSITIONS=399} [2024-06-21 19:17:10,266 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 415 predicate places. [2024-06-21 19:17:10,266 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 399 transitions, 5638 flow [2024-06-21 19:17:10,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:10,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:10,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:17:10,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-21 19:17:10,266 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 19:17:10,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:10,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1698035717, now seen corresponding path program 22 times [2024-06-21 19:17:10,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:10,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245473148] [2024-06-21 19:17:10,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:10,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:10,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:11,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:11,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:11,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245473148] [2024-06-21 19:17:11,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245473148] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:11,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:11,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:17:11,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294310245] [2024-06-21 19:17:11,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:11,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:17:11,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:11,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:17:11,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:17:11,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:17:11,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 399 transitions, 5638 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 19:17:11,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:11,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:17:11,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:12,333 INFO L124 PetriNetUnfolderBase]: 866/1576 cut-off events. [2024-06-21 19:17:12,334 INFO L125 PetriNetUnfolderBase]: For 147074/147074 co-relation queries the response was YES. [2024-06-21 19:17:12,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12054 conditions, 1576 events. 866/1576 cut-off events. For 147074/147074 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 9055 event pairs, 116 based on Foata normal form. 2/1578 useless extension candidates. Maximal degree in co-relation 11879. Up to 1208 conditions per place. [2024-06-21 19:17:12,353 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 248 selfloop transitions, 160 changer transitions 0/410 dead transitions. [2024-06-21 19:17:12,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 410 transitions, 6524 flow [2024-06-21 19:17:12,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:17:12,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:17:12,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-21 19:17:12,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34310850439882695 [2024-06-21 19:17:12,354 INFO L175 Difference]: Start difference. First operand has 445 places, 399 transitions, 5638 flow. Second operand 11 states and 117 transitions. [2024-06-21 19:17:12,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 410 transitions, 6524 flow [2024-06-21 19:17:13,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 410 transitions, 6240 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-21 19:17:13,112 INFO L231 Difference]: Finished difference. Result has 447 places, 400 transitions, 5728 flow [2024-06-21 19:17:13,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5354, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5728, PETRI_PLACES=447, PETRI_TRANSITIONS=400} [2024-06-21 19:17:13,113 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 417 predicate places. [2024-06-21 19:17:13,113 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 400 transitions, 5728 flow [2024-06-21 19:17:13,113 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 19:17:13,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:13,113 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 19:17:13,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-21 19:17:13,113 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 19:17:13,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:13,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1927939587, now seen corresponding path program 3 times [2024-06-21 19:17:13,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:13,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763151940] [2024-06-21 19:17:13,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:13,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:13,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:14,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:14,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:14,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763151940] [2024-06-21 19:17:14,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763151940] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:14,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:14,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:17:14,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565550590] [2024-06-21 19:17:14,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:14,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:17:14,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:14,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:17:14,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:17:15,088 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:17:15,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 400 transitions, 5728 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:15,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:15,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:17:15,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:15,602 INFO L124 PetriNetUnfolderBase]: 874/1592 cut-off events. [2024-06-21 19:17:15,603 INFO L125 PetriNetUnfolderBase]: For 161207/161207 co-relation queries the response was YES. [2024-06-21 19:17:15,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12227 conditions, 1592 events. 874/1592 cut-off events. For 161207/161207 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 9167 event pairs, 120 based on Foata normal form. 4/1596 useless extension candidates. Maximal degree in co-relation 12051. Up to 1249 conditions per place. [2024-06-21 19:17:15,621 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 305 selfloop transitions, 108 changer transitions 0/415 dead transitions. [2024-06-21 19:17:15,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 415 transitions, 6670 flow [2024-06-21 19:17:15,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:17:15,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:17:15,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-21 19:17:15,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-21 19:17:15,622 INFO L175 Difference]: Start difference. First operand has 447 places, 400 transitions, 5728 flow. Second operand 11 states and 132 transitions. [2024-06-21 19:17:15,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 415 transitions, 6670 flow [2024-06-21 19:17:16,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 448 places, 415 transitions, 6306 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-21 19:17:16,443 INFO L231 Difference]: Finished difference. Result has 450 places, 404 transitions, 5691 flow [2024-06-21 19:17:16,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5364, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5691, PETRI_PLACES=450, PETRI_TRANSITIONS=404} [2024-06-21 19:17:16,444 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 420 predicate places. [2024-06-21 19:17:16,444 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 404 transitions, 5691 flow [2024-06-21 19:17:16,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:16,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:16,444 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 19:17:16,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-21 19:17:16,445 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 19:17:16,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:16,445 INFO L85 PathProgramCache]: Analyzing trace with hash -2105322021, now seen corresponding path program 23 times [2024-06-21 19:17:16,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:16,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044779914] [2024-06-21 19:17:16,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:16,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:16,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:17,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:17,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:17,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044779914] [2024-06-21 19:17:17,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044779914] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:17,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:17,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:17:17,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021352371] [2024-06-21 19:17:17,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:17,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:17:17,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:17,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:17:17,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:17:18,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:17:18,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 404 transitions, 5691 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 19:17:18,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:18,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:17:18,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:18,602 INFO L124 PetriNetUnfolderBase]: 889/1621 cut-off events. [2024-06-21 19:17:18,602 INFO L125 PetriNetUnfolderBase]: For 165143/165143 co-relation queries the response was YES. [2024-06-21 19:17:18,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12640 conditions, 1621 events. 889/1621 cut-off events. For 165143/165143 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 9422 event pairs, 117 based on Foata normal form. 2/1623 useless extension candidates. Maximal degree in co-relation 12462. Up to 1236 conditions per place. [2024-06-21 19:17:18,624 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 295 selfloop transitions, 122 changer transitions 0/419 dead transitions. [2024-06-21 19:17:18,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 419 transitions, 6873 flow [2024-06-21 19:17:18,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:17:18,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:17:18,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-21 19:17:18,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-21 19:17:18,625 INFO L175 Difference]: Start difference. First operand has 450 places, 404 transitions, 5691 flow. Second operand 11 states and 121 transitions. [2024-06-21 19:17:18,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 419 transitions, 6873 flow [2024-06-21 19:17:19,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 419 transitions, 6664 flow, removed 41 selfloop flow, removed 7 redundant places. [2024-06-21 19:17:19,395 INFO L231 Difference]: Finished difference. Result has 455 places, 407 transitions, 5842 flow [2024-06-21 19:17:19,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5482, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5842, PETRI_PLACES=455, PETRI_TRANSITIONS=407} [2024-06-21 19:17:19,395 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 425 predicate places. [2024-06-21 19:17:19,395 INFO L495 AbstractCegarLoop]: Abstraction has has 455 places, 407 transitions, 5842 flow [2024-06-21 19:17:19,395 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 19:17:19,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:19,395 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 19:17:19,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-21 19:17:19,396 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 19:17:19,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:19,396 INFO L85 PathProgramCache]: Analyzing trace with hash 548190433, now seen corresponding path program 2 times [2024-06-21 19:17:19,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:19,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431908596] [2024-06-21 19:17:19,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:19,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:19,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:20,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:20,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:20,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431908596] [2024-06-21 19:17:20,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431908596] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:20,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:20,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:17:20,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919820633] [2024-06-21 19:17:20,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:20,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:17:20,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:20,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:17:20,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:17:20,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:17:20,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 407 transitions, 5842 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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 19:17:20,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:20,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:17:20,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:21,303 INFO L124 PetriNetUnfolderBase]: 886/1616 cut-off events. [2024-06-21 19:17:21,303 INFO L125 PetriNetUnfolderBase]: For 155448/155448 co-relation queries the response was YES. [2024-06-21 19:17:21,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12619 conditions, 1616 events. 886/1616 cut-off events. For 155448/155448 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 9366 event pairs, 119 based on Foata normal form. 1/1617 useless extension candidates. Maximal degree in co-relation 12438. Up to 1088 conditions per place. [2024-06-21 19:17:21,324 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 247 selfloop transitions, 169 changer transitions 0/418 dead transitions. [2024-06-21 19:17:21,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 418 transitions, 7138 flow [2024-06-21 19:17:21,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:17:21,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:17:21,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-21 19:17:21,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4064516129032258 [2024-06-21 19:17:21,325 INFO L175 Difference]: Start difference. First operand has 455 places, 407 transitions, 5842 flow. Second operand 10 states and 126 transitions. [2024-06-21 19:17:21,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 418 transitions, 7138 flow [2024-06-21 19:17:22,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 457 places, 418 transitions, 6919 flow, removed 37 selfloop flow, removed 7 redundant places. [2024-06-21 19:17:22,146 INFO L231 Difference]: Finished difference. Result has 458 places, 407 transitions, 5967 flow [2024-06-21 19:17:22,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5623, PETRI_DIFFERENCE_MINUEND_PLACES=448, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5967, PETRI_PLACES=458, PETRI_TRANSITIONS=407} [2024-06-21 19:17:22,147 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 428 predicate places. [2024-06-21 19:17:22,147 INFO L495 AbstractCegarLoop]: Abstraction has has 458 places, 407 transitions, 5967 flow [2024-06-21 19:17:22,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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 19:17:22,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:22,147 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 19:17:22,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-21 19:17:22,147 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 19:17:22,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:22,148 INFO L85 PathProgramCache]: Analyzing trace with hash 326545393, now seen corresponding path program 3 times [2024-06-21 19:17:22,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:22,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903109073] [2024-06-21 19:17:22,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:22,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:22,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:23,603 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 19:17:23,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:23,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903109073] [2024-06-21 19:17:23,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903109073] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:23,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:23,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:17:23,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981402292] [2024-06-21 19:17:23,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:23,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:17:23,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:23,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:17:23,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:17:23,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:17:23,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 458 places, 407 transitions, 5967 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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 19:17:23,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:23,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:17:23,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:24,106 INFO L124 PetriNetUnfolderBase]: 884/1613 cut-off events. [2024-06-21 19:17:24,106 INFO L125 PetriNetUnfolderBase]: For 150215/150215 co-relation queries the response was YES. [2024-06-21 19:17:24,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12669 conditions, 1613 events. 884/1613 cut-off events. For 150215/150215 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 9357 event pairs, 121 based on Foata normal form. 1/1614 useless extension candidates. Maximal degree in co-relation 12486. Up to 1086 conditions per place. [2024-06-21 19:17:24,129 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 270 selfloop transitions, 146 changer transitions 0/418 dead transitions. [2024-06-21 19:17:24,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 467 places, 418 transitions, 7267 flow [2024-06-21 19:17:24,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:17:24,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:17:24,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-21 19:17:24,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4096774193548387 [2024-06-21 19:17:24,130 INFO L175 Difference]: Start difference. First operand has 458 places, 407 transitions, 5967 flow. Second operand 10 states and 127 transitions. [2024-06-21 19:17:24,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 467 places, 418 transitions, 7267 flow [2024-06-21 19:17:24,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 457 places, 418 transitions, 6902 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-06-21 19:17:24,869 INFO L231 Difference]: Finished difference. Result has 458 places, 407 transitions, 5904 flow [2024-06-21 19:17:24,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5606, PETRI_DIFFERENCE_MINUEND_PLACES=448, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5904, PETRI_PLACES=458, PETRI_TRANSITIONS=407} [2024-06-21 19:17:24,869 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 428 predicate places. [2024-06-21 19:17:24,870 INFO L495 AbstractCegarLoop]: Abstraction has has 458 places, 407 transitions, 5904 flow [2024-06-21 19:17:24,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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 19:17:24,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:24,870 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 19:17:24,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-21 19:17:24,870 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 19:17:24,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:24,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1934619591, now seen corresponding path program 24 times [2024-06-21 19:17:24,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:24,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68400309] [2024-06-21 19:17:24,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:24,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:24,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:26,395 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 19:17:26,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:26,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68400309] [2024-06-21 19:17:26,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68400309] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:26,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:26,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:17:26,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849500806] [2024-06-21 19:17:26,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:26,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:17:26,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:26,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:17:26,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:17:26,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:17:26,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 458 places, 407 transitions, 5904 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 19:17:26,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:26,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:17:26,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:26,990 INFO L124 PetriNetUnfolderBase]: 899/1642 cut-off events. [2024-06-21 19:17:26,990 INFO L125 PetriNetUnfolderBase]: For 171069/171069 co-relation queries the response was YES. [2024-06-21 19:17:27,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13147 conditions, 1642 events. 899/1642 cut-off events. For 171069/171069 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 9600 event pairs, 124 based on Foata normal form. 2/1644 useless extension candidates. Maximal degree in co-relation 12964. Up to 1251 conditions per place. [2024-06-21 19:17:27,012 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 300 selfloop transitions, 120 changer transitions 0/422 dead transitions. [2024-06-21 19:17:27,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 422 transitions, 7102 flow [2024-06-21 19:17:27,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:17:27,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:17:27,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-21 19:17:27,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36070381231671556 [2024-06-21 19:17:27,013 INFO L175 Difference]: Start difference. First operand has 458 places, 407 transitions, 5904 flow. Second operand 11 states and 123 transitions. [2024-06-21 19:17:27,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 422 transitions, 7102 flow [2024-06-21 19:17:27,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 458 places, 422 transitions, 6797 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-21 19:17:27,880 INFO L231 Difference]: Finished difference. Result has 460 places, 410 transitions, 5965 flow [2024-06-21 19:17:27,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5601, PETRI_DIFFERENCE_MINUEND_PLACES=448, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5965, PETRI_PLACES=460, PETRI_TRANSITIONS=410} [2024-06-21 19:17:27,881 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 430 predicate places. [2024-06-21 19:17:27,881 INFO L495 AbstractCegarLoop]: Abstraction has has 460 places, 410 transitions, 5965 flow [2024-06-21 19:17:27,881 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 19:17:27,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:27,881 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 19:17:27,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-21 19:17:27,882 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 19:17:27,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:27,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1934614941, now seen corresponding path program 25 times [2024-06-21 19:17:27,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:27,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000718582] [2024-06-21 19:17:27,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:27,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:27,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:29,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:29,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:29,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000718582] [2024-06-21 19:17:29,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000718582] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:29,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:29,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:17:29,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82504383] [2024-06-21 19:17:29,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:29,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:17:29,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:29,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:17:29,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:17:29,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:17:29,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 410 transitions, 5965 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 19:17:29,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:29,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:17:29,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:30,317 INFO L124 PetriNetUnfolderBase]: 896/1637 cut-off events. [2024-06-21 19:17:30,317 INFO L125 PetriNetUnfolderBase]: For 158913/158913 co-relation queries the response was YES. [2024-06-21 19:17:30,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12832 conditions, 1637 events. 896/1637 cut-off events. For 158913/158913 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 9565 event pairs, 125 based on Foata normal form. 2/1639 useless extension candidates. Maximal degree in co-relation 12648. Up to 1269 conditions per place. [2024-06-21 19:17:30,339 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 299 selfloop transitions, 119 changer transitions 0/420 dead transitions. [2024-06-21 19:17:30,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 470 places, 420 transitions, 6823 flow [2024-06-21 19:17:30,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:17:30,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:17:30,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-21 19:17:30,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35777126099706746 [2024-06-21 19:17:30,340 INFO L175 Difference]: Start difference. First operand has 460 places, 410 transitions, 5965 flow. Second operand 11 states and 122 transitions. [2024-06-21 19:17:30,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 470 places, 420 transitions, 6823 flow [2024-06-21 19:17:31,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 463 places, 420 transitions, 6584 flow, removed 50 selfloop flow, removed 7 redundant places. [2024-06-21 19:17:31,174 INFO L231 Difference]: Finished difference. Result has 464 places, 410 transitions, 5968 flow [2024-06-21 19:17:31,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5726, PETRI_DIFFERENCE_MINUEND_PLACES=453, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5968, PETRI_PLACES=464, PETRI_TRANSITIONS=410} [2024-06-21 19:17:31,175 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 434 predicate places. [2024-06-21 19:17:31,175 INFO L495 AbstractCegarLoop]: Abstraction has has 464 places, 410 transitions, 5968 flow [2024-06-21 19:17:31,175 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 19:17:31,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:31,175 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 19:17:31,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-21 19:17:31,175 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 19:17:31,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:31,176 INFO L85 PathProgramCache]: Analyzing trace with hash -2009347571, now seen corresponding path program 4 times [2024-06-21 19:17:31,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:31,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322166941] [2024-06-21 19:17:31,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:31,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:31,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:32,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:32,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:32,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322166941] [2024-06-21 19:17:32,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322166941] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:32,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:32,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:17:32,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580997836] [2024-06-21 19:17:32,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:32,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:17:32,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:32,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:17:32,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:17:32,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:17:32,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 464 places, 410 transitions, 5968 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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 19:17:32,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:32,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:17:32,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:33,144 INFO L124 PetriNetUnfolderBase]: 894/1634 cut-off events. [2024-06-21 19:17:33,144 INFO L125 PetriNetUnfolderBase]: For 146608/146608 co-relation queries the response was YES. [2024-06-21 19:17:33,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12728 conditions, 1634 events. 894/1634 cut-off events. For 146608/146608 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 9532 event pairs, 125 based on Foata normal form. 1/1635 useless extension candidates. Maximal degree in co-relation 12542. Up to 1108 conditions per place. [2024-06-21 19:17:33,164 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 285 selfloop transitions, 133 changer transitions 0/420 dead transitions. [2024-06-21 19:17:33,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 472 places, 420 transitions, 7050 flow [2024-06-21 19:17:33,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:17:33,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:17:33,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 121 transitions. [2024-06-21 19:17:33,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4336917562724014 [2024-06-21 19:17:33,165 INFO L175 Difference]: Start difference. First operand has 464 places, 410 transitions, 5968 flow. Second operand 9 states and 121 transitions. [2024-06-21 19:17:33,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 472 places, 420 transitions, 7050 flow [2024-06-21 19:17:33,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 463 places, 420 transitions, 6800 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-21 19:17:33,897 INFO L231 Difference]: Finished difference. Result has 464 places, 410 transitions, 5990 flow [2024-06-21 19:17:33,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5718, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5990, PETRI_PLACES=464, PETRI_TRANSITIONS=410} [2024-06-21 19:17:33,898 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 434 predicate places. [2024-06-21 19:17:33,898 INFO L495 AbstractCegarLoop]: Abstraction has has 464 places, 410 transitions, 5990 flow [2024-06-21 19:17:33,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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 19:17:33,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:33,898 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 19:17:33,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-21 19:17:33,898 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 19:17:33,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:33,898 INFO L85 PathProgramCache]: Analyzing trace with hash -2009338953, now seen corresponding path program 5 times [2024-06-21 19:17:33,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:33,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515347238] [2024-06-21 19:17:33,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:33,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:33,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:35,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:35,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:35,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515347238] [2024-06-21 19:17:35,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515347238] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:35,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:35,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:17:35,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070105782] [2024-06-21 19:17:35,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:35,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:17:35,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:35,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:17:35,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:17:36,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:17:36,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 464 places, 410 transitions, 5990 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 19:17:36,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:36,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:17:36,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:36,438 INFO L124 PetriNetUnfolderBase]: 900/1644 cut-off events. [2024-06-21 19:17:36,439 INFO L125 PetriNetUnfolderBase]: For 155063/155063 co-relation queries the response was YES. [2024-06-21 19:17:36,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12891 conditions, 1644 events. 900/1644 cut-off events. For 155063/155063 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 9626 event pairs, 125 based on Foata normal form. 2/1646 useless extension candidates. Maximal degree in co-relation 12705. Up to 1304 conditions per place. [2024-06-21 19:17:36,471 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 313 selfloop transitions, 108 changer transitions 0/423 dead transitions. [2024-06-21 19:17:36,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 473 places, 423 transitions, 6934 flow [2024-06-21 19:17:36,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:17:36,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:17:36,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-21 19:17:36,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4096774193548387 [2024-06-21 19:17:36,472 INFO L175 Difference]: Start difference. First operand has 464 places, 410 transitions, 5990 flow. Second operand 10 states and 127 transitions. [2024-06-21 19:17:36,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 473 places, 423 transitions, 6934 flow [2024-06-21 19:17:37,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 464 places, 423 transitions, 6657 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-21 19:17:37,375 INFO L231 Difference]: Finished difference. Result has 465 places, 412 transitions, 5990 flow [2024-06-21 19:17:37,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5713, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5990, PETRI_PLACES=465, PETRI_TRANSITIONS=412} [2024-06-21 19:17:37,376 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 435 predicate places. [2024-06-21 19:17:37,376 INFO L495 AbstractCegarLoop]: Abstraction has has 465 places, 412 transitions, 5990 flow [2024-06-21 19:17:37,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:37,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:37,376 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:17:37,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-21 19:17:37,377 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 19:17:37,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:37,377 INFO L85 PathProgramCache]: Analyzing trace with hash 2112719519, now seen corresponding path program 26 times [2024-06-21 19:17:37,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:37,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102795055] [2024-06-21 19:17:37,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:37,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:37,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:39,045 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 19:17:39,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:39,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102795055] [2024-06-21 19:17:39,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102795055] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:39,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:39,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:17:39,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097907070] [2024-06-21 19:17:39,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:39,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:17:39,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:39,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:17:39,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:17:39,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:17:39,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 465 places, 412 transitions, 5990 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 19:17:39,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:39,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:17:39,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:39,798 INFO L124 PetriNetUnfolderBase]: 897/1639 cut-off events. [2024-06-21 19:17:39,798 INFO L125 PetriNetUnfolderBase]: For 142874/142874 co-relation queries the response was YES. [2024-06-21 19:17:39,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12602 conditions, 1639 events. 897/1639 cut-off events. For 142874/142874 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 9595 event pairs, 124 based on Foata normal form. 2/1641 useless extension candidates. Maximal degree in co-relation 12416. Up to 1271 conditions per place. [2024-06-21 19:17:39,819 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 298 selfloop transitions, 122 changer transitions 0/422 dead transitions. [2024-06-21 19:17:39,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 475 places, 422 transitions, 6852 flow [2024-06-21 19:17:39,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:17:39,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:17:39,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-21 19:17:39,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489736070381232 [2024-06-21 19:17:39,820 INFO L175 Difference]: Start difference. First operand has 465 places, 412 transitions, 5990 flow. Second operand 11 states and 119 transitions. [2024-06-21 19:17:39,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 475 places, 422 transitions, 6852 flow [2024-06-21 19:17:40,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 467 places, 422 transitions, 6557 flow, removed 41 selfloop flow, removed 8 redundant places. [2024-06-21 19:17:40,593 INFO L231 Difference]: Finished difference. Result has 468 places, 412 transitions, 5943 flow [2024-06-21 19:17:40,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5695, PETRI_DIFFERENCE_MINUEND_PLACES=457, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5943, PETRI_PLACES=468, PETRI_TRANSITIONS=412} [2024-06-21 19:17:40,593 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 438 predicate places. [2024-06-21 19:17:40,593 INFO L495 AbstractCegarLoop]: Abstraction has has 468 places, 412 transitions, 5943 flow [2024-06-21 19:17:40,593 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 19:17:40,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:40,594 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 19:17:40,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-21 19:17:40,594 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 19:17:40,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:40,594 INFO L85 PathProgramCache]: Analyzing trace with hash 2108130899, now seen corresponding path program 27 times [2024-06-21 19:17:40,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:40,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446707950] [2024-06-21 19:17:40,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:40,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:40,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:42,135 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 19:17:42,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:42,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446707950] [2024-06-21 19:17:42,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446707950] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:42,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:42,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:17:42,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328380871] [2024-06-21 19:17:42,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:42,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:17:42,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:42,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:17:42,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:17:42,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:17:42,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 412 transitions, 5943 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 19:17:42,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:42,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:17:42,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:42,734 INFO L124 PetriNetUnfolderBase]: 905/1655 cut-off events. [2024-06-21 19:17:42,734 INFO L125 PetriNetUnfolderBase]: For 145675/145675 co-relation queries the response was YES. [2024-06-21 19:17:42,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12645 conditions, 1655 events. 905/1655 cut-off events. For 145675/145675 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 9725 event pairs, 120 based on Foata normal form. 2/1657 useless extension candidates. Maximal degree in co-relation 12457. Up to 1198 conditions per place. [2024-06-21 19:17:42,756 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 298 selfloop transitions, 127 changer transitions 0/427 dead transitions. [2024-06-21 19:17:42,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 427 transitions, 7111 flow [2024-06-21 19:17:42,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:17:42,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:17:42,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-21 19:17:42,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3519061583577713 [2024-06-21 19:17:42,757 INFO L175 Difference]: Start difference. First operand has 468 places, 412 transitions, 5943 flow. Second operand 11 states and 120 transitions. [2024-06-21 19:17:42,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 427 transitions, 7111 flow [2024-06-21 19:17:43,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 469 places, 427 transitions, 6869 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-21 19:17:43,489 INFO L231 Difference]: Finished difference. Result has 471 places, 414 transitions, 6025 flow [2024-06-21 19:17:43,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5701, PETRI_DIFFERENCE_MINUEND_PLACES=459, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6025, PETRI_PLACES=471, PETRI_TRANSITIONS=414} [2024-06-21 19:17:43,489 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 441 predicate places. [2024-06-21 19:17:43,489 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 414 transitions, 6025 flow [2024-06-21 19:17:43,489 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 19:17:43,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:43,489 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 19:17:43,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-21 19:17:43,490 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 19:17:43,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:43,490 INFO L85 PathProgramCache]: Analyzing trace with hash -2039665589, now seen corresponding path program 4 times [2024-06-21 19:17:43,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:43,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444748531] [2024-06-21 19:17:43,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:43,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:43,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:45,338 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 19:17:45,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:45,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444748531] [2024-06-21 19:17:45,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444748531] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:45,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:45,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:17:45,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508165919] [2024-06-21 19:17:45,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:45,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:17:45,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:45,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:17:45,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:17:45,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:17:45,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 414 transitions, 6025 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:45,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:45,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:17:45,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:45,986 INFO L124 PetriNetUnfolderBase]: 913/1671 cut-off events. [2024-06-21 19:17:45,986 INFO L125 PetriNetUnfolderBase]: For 162666/162666 co-relation queries the response was YES. [2024-06-21 19:17:46,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12866 conditions, 1671 events. 913/1671 cut-off events. For 162666/162666 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 9850 event pairs, 128 based on Foata normal form. 4/1675 useless extension candidates. Maximal degree in co-relation 12676. Up to 1330 conditions per place. [2024-06-21 19:17:46,008 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 310 selfloop transitions, 117 changer transitions 0/429 dead transitions. [2024-06-21 19:17:46,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 481 places, 429 transitions, 7001 flow [2024-06-21 19:17:46,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:17:46,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:17:46,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-21 19:17:46,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-21 19:17:46,009 INFO L175 Difference]: Start difference. First operand has 471 places, 414 transitions, 6025 flow. Second operand 11 states and 132 transitions. [2024-06-21 19:17:46,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 481 places, 429 transitions, 7001 flow [2024-06-21 19:17:46,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 465 places, 429 transitions, 6545 flow, removed 51 selfloop flow, removed 16 redundant places. [2024-06-21 19:17:46,740 INFO L231 Difference]: Finished difference. Result has 467 places, 418 transitions, 5919 flow [2024-06-21 19:17:46,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5569, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5919, PETRI_PLACES=467, PETRI_TRANSITIONS=418} [2024-06-21 19:17:46,740 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 437 predicate places. [2024-06-21 19:17:46,740 INFO L495 AbstractCegarLoop]: Abstraction has has 467 places, 418 transitions, 5919 flow [2024-06-21 19:17:46,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:46,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:46,740 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 19:17:46,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-21 19:17:46,740 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 19:17:46,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:46,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1912458315, now seen corresponding path program 5 times [2024-06-21 19:17:46,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:46,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277328868] [2024-06-21 19:17:46,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:46,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:46,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:48,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:48,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:48,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277328868] [2024-06-21 19:17:48,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277328868] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:48,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:48,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:17:48,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328119988] [2024-06-21 19:17:48,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:48,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:17:48,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:48,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:17:48,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:17:48,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:17:48,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 418 transitions, 5919 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 19:17:48,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:48,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:17:48,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:49,021 INFO L124 PetriNetUnfolderBase]: 924/1692 cut-off events. [2024-06-21 19:17:49,021 INFO L125 PetriNetUnfolderBase]: For 162329/162329 co-relation queries the response was YES. [2024-06-21 19:17:49,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12903 conditions, 1692 events. 924/1692 cut-off events. For 162329/162329 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 10004 event pairs, 270 based on Foata normal form. 2/1694 useless extension candidates. Maximal degree in co-relation 12720. Up to 1615 conditions per place. [2024-06-21 19:17:49,043 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 407 selfloop transitions, 27 changer transitions 0/436 dead transitions. [2024-06-21 19:17:49,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 436 transitions, 7153 flow [2024-06-21 19:17:49,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:17:49,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:17:49,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 117 transitions. [2024-06-21 19:17:49,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31451612903225806 [2024-06-21 19:17:49,044 INFO L175 Difference]: Start difference. First operand has 467 places, 418 transitions, 5919 flow. Second operand 12 states and 117 transitions. [2024-06-21 19:17:49,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 436 transitions, 7153 flow [2024-06-21 19:17:49,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 471 places, 436 transitions, 6920 flow, removed 44 selfloop flow, removed 7 redundant places. [2024-06-21 19:17:49,887 INFO L231 Difference]: Finished difference. Result has 473 places, 422 transitions, 5861 flow [2024-06-21 19:17:49,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5686, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5861, PETRI_PLACES=473, PETRI_TRANSITIONS=422} [2024-06-21 19:17:49,887 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 443 predicate places. [2024-06-21 19:17:49,887 INFO L495 AbstractCegarLoop]: Abstraction has has 473 places, 422 transitions, 5861 flow [2024-06-21 19:17:49,887 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 19:17:49,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:49,887 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 19:17:49,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-21 19:17:49,887 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 19:17:49,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:49,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1958266843, now seen corresponding path program 6 times [2024-06-21 19:17:49,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:49,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459441383] [2024-06-21 19:17:49,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:49,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:49,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:51,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:51,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:51,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459441383] [2024-06-21 19:17:51,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459441383] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:51,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:51,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:17:51,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556741283] [2024-06-21 19:17:51,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:51,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:17:51,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:51,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:17:51,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:17:51,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:17:51,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 473 places, 422 transitions, 5861 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 19:17:51,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:51,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:17:51,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:52,151 INFO L124 PetriNetUnfolderBase]: 930/1702 cut-off events. [2024-06-21 19:17:52,151 INFO L125 PetriNetUnfolderBase]: For 164398/164398 co-relation queries the response was YES. [2024-06-21 19:17:52,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12938 conditions, 1702 events. 930/1702 cut-off events. For 164398/164398 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 10059 event pairs, 129 based on Foata normal form. 2/1704 useless extension candidates. Maximal degree in co-relation 12752. Up to 1364 conditions per place. [2024-06-21 19:17:52,175 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 316 selfloop transitions, 117 changer transitions 0/435 dead transitions. [2024-06-21 19:17:52,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 435 transitions, 6837 flow [2024-06-21 19:17:52,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:17:52,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:17:52,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-21 19:17:52,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4096774193548387 [2024-06-21 19:17:52,176 INFO L175 Difference]: Start difference. First operand has 473 places, 422 transitions, 5861 flow. Second operand 10 states and 127 transitions. [2024-06-21 19:17:52,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 435 transitions, 6837 flow [2024-06-21 19:17:53,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 475 places, 435 transitions, 6731 flow, removed 41 selfloop flow, removed 7 redundant places. [2024-06-21 19:17:53,082 INFO L231 Difference]: Finished difference. Result has 476 places, 424 transitions, 6054 flow [2024-06-21 19:17:53,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5755, PETRI_DIFFERENCE_MINUEND_PLACES=466, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6054, PETRI_PLACES=476, PETRI_TRANSITIONS=424} [2024-06-21 19:17:53,082 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 446 predicate places. [2024-06-21 19:17:53,083 INFO L495 AbstractCegarLoop]: Abstraction has has 476 places, 424 transitions, 6054 flow [2024-06-21 19:17:53,083 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 19:17:53,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:53,083 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 19:17:53,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-21 19:17:53,083 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 19:17:53,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:53,084 INFO L85 PathProgramCache]: Analyzing trace with hash -2046345593, now seen corresponding path program 28 times [2024-06-21 19:17:53,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:53,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845568254] [2024-06-21 19:17:53,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:53,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:53,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:54,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:54,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:54,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845568254] [2024-06-21 19:17:54,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845568254] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:54,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:54,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:17:54,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443372478] [2024-06-21 19:17:54,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:54,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:17:54,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:54,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:17:54,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:17:54,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:17:54,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 476 places, 424 transitions, 6054 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 19:17:54,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:54,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:17:54,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:55,223 INFO L124 PetriNetUnfolderBase]: 934/1710 cut-off events. [2024-06-21 19:17:55,224 INFO L125 PetriNetUnfolderBase]: For 167830/167830 co-relation queries the response was YES. [2024-06-21 19:17:55,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13170 conditions, 1710 events. 934/1710 cut-off events. For 167830/167830 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 10155 event pairs, 127 based on Foata normal form. 2/1712 useless extension candidates. Maximal degree in co-relation 12983. Up to 1317 conditions per place. [2024-06-21 19:17:55,246 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 298 selfloop transitions, 137 changer transitions 0/437 dead transitions. [2024-06-21 19:17:55,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 486 places, 437 transitions, 7227 flow [2024-06-21 19:17:55,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:17:55,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:17:55,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-21 19:17:55,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489736070381232 [2024-06-21 19:17:55,247 INFO L175 Difference]: Start difference. First operand has 476 places, 424 transitions, 6054 flow. Second operand 11 states and 119 transitions. [2024-06-21 19:17:55,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 486 places, 437 transitions, 7227 flow [2024-06-21 19:17:55,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 437 transitions, 6891 flow, removed 28 selfloop flow, removed 10 redundant places. [2024-06-21 19:17:56,069 INFO L231 Difference]: Finished difference. Result has 477 places, 425 transitions, 6037 flow [2024-06-21 19:17:56,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5718, PETRI_DIFFERENCE_MINUEND_PLACES=466, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6037, PETRI_PLACES=477, PETRI_TRANSITIONS=425} [2024-06-21 19:17:56,070 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 447 predicate places. [2024-06-21 19:17:56,070 INFO L495 AbstractCegarLoop]: Abstraction has has 477 places, 425 transitions, 6037 flow [2024-06-21 19:17:56,070 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 19:17:56,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:56,070 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 19:17:56,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-21 19:17:56,070 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 19:17:56,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:56,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1993501181, now seen corresponding path program 6 times [2024-06-21 19:17:56,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:56,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811832092] [2024-06-21 19:17:56,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:56,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:56,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:57,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:57,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:57,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811832092] [2024-06-21 19:17:57,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811832092] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:57,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:57,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:17:57,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287123249] [2024-06-21 19:17:57,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:57,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:17:57,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:57,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:17:57,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:17:57,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:17:57,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 477 places, 425 transitions, 6037 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 19:17:57,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:57,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:17:57,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:58,416 INFO L124 PetriNetUnfolderBase]: 938/1718 cut-off events. [2024-06-21 19:17:58,416 INFO L125 PetriNetUnfolderBase]: For 170179/170179 co-relation queries the response was YES. [2024-06-21 19:17:58,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13127 conditions, 1718 events. 938/1718 cut-off events. For 170179/170179 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 10201 event pairs, 274 based on Foata normal form. 2/1720 useless extension candidates. Maximal degree in co-relation 12940. Up to 1669 conditions per place. [2024-06-21 19:17:58,440 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 411 selfloop transitions, 25 changer transitions 0/438 dead transitions. [2024-06-21 19:17:58,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 488 places, 438 transitions, 6973 flow [2024-06-21 19:17:58,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:17:58,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:17:58,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 115 transitions. [2024-06-21 19:17:58,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30913978494623656 [2024-06-21 19:17:58,441 INFO L175 Difference]: Start difference. First operand has 477 places, 425 transitions, 6037 flow. Second operand 12 states and 115 transitions. [2024-06-21 19:17:58,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 488 places, 438 transitions, 6973 flow [2024-06-21 19:17:59,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 475 places, 438 transitions, 6462 flow, removed 24 selfloop flow, removed 13 redundant places. [2024-06-21 19:17:59,275 INFO L231 Difference]: Finished difference. Result has 476 places, 426 transitions, 5620 flow [2024-06-21 19:17:59,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5526, PETRI_DIFFERENCE_MINUEND_PLACES=464, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5620, PETRI_PLACES=476, PETRI_TRANSITIONS=426} [2024-06-21 19:17:59,275 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 446 predicate places. [2024-06-21 19:17:59,275 INFO L495 AbstractCegarLoop]: Abstraction has has 476 places, 426 transitions, 5620 flow [2024-06-21 19:17:59,275 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 19:17:59,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:59,276 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 19:17:59,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-21 19:17:59,276 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 19:17:59,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:59,276 INFO L85 PathProgramCache]: Analyzing trace with hash -2046340943, now seen corresponding path program 29 times [2024-06-21 19:17:59,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:59,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778787247] [2024-06-21 19:17:59,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:59,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:59,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:18:00,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:18:00,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:18:00,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778787247] [2024-06-21 19:18:00,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778787247] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:18:00,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:18:00,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:18:00,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962446763] [2024-06-21 19:18:00,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:18:00,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:18:00,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:18:00,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:18:00,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:18:01,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:18:01,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 476 places, 426 transitions, 5620 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 19:18:01,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:18:01,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:18:01,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:18:01,638 INFO L124 PetriNetUnfolderBase]: 942/1726 cut-off events. [2024-06-21 19:18:01,638 INFO L125 PetriNetUnfolderBase]: For 172909/172909 co-relation queries the response was YES. [2024-06-21 19:18:01,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12510 conditions, 1726 events. 942/1726 cut-off events. For 172909/172909 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 10253 event pairs, 129 based on Foata normal form. 2/1728 useless extension candidates. Maximal degree in co-relation 12327. Up to 1358 conditions per place. [2024-06-21 19:18:01,659 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 299 selfloop transitions, 136 changer transitions 0/437 dead transitions. [2024-06-21 19:18:01,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 486 places, 437 transitions, 6550 flow [2024-06-21 19:18:01,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:18:01,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:18:01,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-21 19:18:01,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3460410557184751 [2024-06-21 19:18:01,660 INFO L175 Difference]: Start difference. First operand has 476 places, 426 transitions, 5620 flow. Second operand 11 states and 118 transitions. [2024-06-21 19:18:01,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 486 places, 437 transitions, 6550 flow [2024-06-21 19:18:02,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 437 transitions, 6467 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-06-21 19:18:02,466 INFO L231 Difference]: Finished difference. Result has 477 places, 427 transitions, 5853 flow [2024-06-21 19:18:02,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5537, PETRI_DIFFERENCE_MINUEND_PLACES=466, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5853, PETRI_PLACES=477, PETRI_TRANSITIONS=427} [2024-06-21 19:18:02,466 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 447 predicate places. [2024-06-21 19:18:02,466 INFO L495 AbstractCegarLoop]: Abstraction has has 477 places, 427 transitions, 5853 flow [2024-06-21 19:18:02,466 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 19:18:02,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:18:02,467 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 19:18:02,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-21 19:18:02,467 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 19:18:02,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:18:02,467 INFO L85 PathProgramCache]: Analyzing trace with hash 323682281, now seen corresponding path program 30 times [2024-06-21 19:18:02,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:18:02,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231426195] [2024-06-21 19:18:02,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:18:02,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:18:02,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:18:04,013 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 19:18:04,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:18:04,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231426195] [2024-06-21 19:18:04,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231426195] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:18:04,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:18:04,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:18:04,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41554337] [2024-06-21 19:18:04,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:18:04,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:18:04,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:18:04,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:18:04,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:18:04,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:18:04,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 477 places, 427 transitions, 5853 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 19:18:04,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:18:04,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:18:04,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:18:04,702 INFO L124 PetriNetUnfolderBase]: 939/1721 cut-off events. [2024-06-21 19:18:04,702 INFO L125 PetriNetUnfolderBase]: For 161366/161366 co-relation queries the response was YES. [2024-06-21 19:18:04,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12408 conditions, 1721 events. 939/1721 cut-off events. For 161366/161366 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 10238 event pairs, 128 based on Foata normal form. 2/1723 useless extension candidates. Maximal degree in co-relation 12224. Up to 1353 conditions per place. [2024-06-21 19:18:04,732 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 300 selfloop transitions, 135 changer transitions 0/437 dead transitions. [2024-06-21 19:18:04,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 487 places, 437 transitions, 6745 flow [2024-06-21 19:18:04,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:18:04,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:18:04,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-21 19:18:04,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3519061583577713 [2024-06-21 19:18:04,733 INFO L175 Difference]: Start difference. First operand has 477 places, 427 transitions, 5853 flow. Second operand 11 states and 120 transitions. [2024-06-21 19:18:04,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 487 places, 437 transitions, 6745 flow [2024-06-21 19:18:05,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 437 transitions, 6409 flow, removed 33 selfloop flow, removed 9 redundant places. [2024-06-21 19:18:05,586 INFO L231 Difference]: Finished difference. Result has 479 places, 427 transitions, 5791 flow [2024-06-21 19:18:05,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5517, PETRI_DIFFERENCE_MINUEND_PLACES=468, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5791, PETRI_PLACES=479, PETRI_TRANSITIONS=427} [2024-06-21 19:18:05,586 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 449 predicate places. [2024-06-21 19:18:05,586 INFO L495 AbstractCegarLoop]: Abstraction has has 479 places, 427 transitions, 5791 flow [2024-06-21 19:18:05,586 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 19:18:05,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:18:05,587 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 19:18:05,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-21 19:18:05,587 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 19:18:05,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:18:05,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1993500871, now seen corresponding path program 7 times [2024-06-21 19:18:05,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:18:05,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977390190] [2024-06-21 19:18:05,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:18:05,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:18:05,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:18:07,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:18:07,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:18:07,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977390190] [2024-06-21 19:18:07,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977390190] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:18:07,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:18:07,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:18:07,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152763802] [2024-06-21 19:18:07,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:18:07,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:18:07,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:18:07,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:18:07,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:18:07,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:18:07,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 427 transitions, 5791 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 19:18:07,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:18:07,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:18:07,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:18:08,040 INFO L124 PetriNetUnfolderBase]: 950/1739 cut-off events. [2024-06-21 19:18:08,040 INFO L125 PetriNetUnfolderBase]: For 168045/168045 co-relation queries the response was YES. [2024-06-21 19:18:08,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12654 conditions, 1739 events. 950/1739 cut-off events. For 168045/168045 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 10329 event pairs, 274 based on Foata normal form. 2/1741 useless extension candidates. Maximal degree in co-relation 12469. Up to 1678 conditions per place. [2024-06-21 19:18:08,063 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 415 selfloop transitions, 28 changer transitions 0/445 dead transitions. [2024-06-21 19:18:08,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 491 places, 445 transitions, 7131 flow [2024-06-21 19:18:08,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 19:18:08,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 19:18:08,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 123 transitions. [2024-06-21 19:18:08,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3052109181141439 [2024-06-21 19:18:08,064 INFO L175 Difference]: Start difference. First operand has 479 places, 427 transitions, 5791 flow. Second operand 13 states and 123 transitions. [2024-06-21 19:18:08,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 491 places, 445 transitions, 7131 flow [2024-06-21 19:18:08,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 481 places, 445 transitions, 6724 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-21 19:18:08,940 INFO L231 Difference]: Finished difference. Result has 482 places, 431 transitions, 5571 flow [2024-06-21 19:18:08,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5386, PETRI_DIFFERENCE_MINUEND_PLACES=469, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5571, PETRI_PLACES=482, PETRI_TRANSITIONS=431} [2024-06-21 19:18:08,941 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 452 predicate places. [2024-06-21 19:18:08,941 INFO L495 AbstractCegarLoop]: Abstraction has has 482 places, 431 transitions, 5571 flow [2024-06-21 19:18:08,941 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 19:18:08,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:18:08,941 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 19:18:08,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-21 19:18:08,941 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 19:18:08,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:18:08,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1901982795, now seen corresponding path program 7 times [2024-06-21 19:18:08,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:18:08,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136785795] [2024-06-21 19:18:08,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:18:08,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:18:08,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:18:10,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:18:10,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:18:10,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136785795] [2024-06-21 19:18:10,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136785795] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:18:10,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:18:10,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:18:10,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850248056] [2024-06-21 19:18:10,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:18:10,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:18:10,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:18:10,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:18:10,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:18:10,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:18:10,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 482 places, 431 transitions, 5571 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 19:18:10,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:18:10,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:18:10,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:18:11,065 INFO L124 PetriNetUnfolderBase]: 944/1729 cut-off events. [2024-06-21 19:18:11,065 INFO L125 PetriNetUnfolderBase]: For 153210/153210 co-relation queries the response was YES. [2024-06-21 19:18:11,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11756 conditions, 1729 events. 944/1729 cut-off events. For 153210/153210 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 10301 event pairs, 272 based on Foata normal form. 4/1733 useless extension candidates. Maximal degree in co-relation 11570. Up to 1680 conditions per place. [2024-06-21 19:18:11,088 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 418 selfloop transitions, 22 changer transitions 0/442 dead transitions. [2024-06-21 19:18:11,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 492 places, 442 transitions, 6475 flow [2024-06-21 19:18:11,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:18:11,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:18:11,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 107 transitions. [2024-06-21 19:18:11,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31378299120234604 [2024-06-21 19:18:11,089 INFO L175 Difference]: Start difference. First operand has 482 places, 431 transitions, 5571 flow. Second operand 11 states and 107 transitions. [2024-06-21 19:18:11,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 492 places, 442 transitions, 6475 flow [2024-06-21 19:18:11,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 483 places, 442 transitions, 6338 flow, removed 55 selfloop flow, removed 9 redundant places. [2024-06-21 19:18:11,869 INFO L231 Difference]: Finished difference. Result has 484 places, 431 transitions, 5483 flow [2024-06-21 19:18:11,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5434, PETRI_DIFFERENCE_MINUEND_PLACES=473, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5483, PETRI_PLACES=484, PETRI_TRANSITIONS=431} [2024-06-21 19:18:11,870 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 454 predicate places. [2024-06-21 19:18:11,870 INFO L495 AbstractCegarLoop]: Abstraction has has 484 places, 431 transitions, 5483 flow [2024-06-21 19:18:11,870 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 19:18:11,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:18:11,870 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 19:18:11,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-21 19:18:11,870 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 19:18:11,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:18:11,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1901982485, now seen corresponding path program 8 times [2024-06-21 19:18:11,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:18:11,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790392796] [2024-06-21 19:18:11,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:18:11,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:18:11,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:18:13,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:18:13,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:18:13,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790392796] [2024-06-21 19:18:13,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790392796] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:18:13,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:18:13,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:18:13,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623032707] [2024-06-21 19:18:13,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:18:13,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:18:13,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:18:13,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:18:13,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:18:13,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:18:13,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 484 places, 431 transitions, 5483 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 19:18:13,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:18:13,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:18:13,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:18:14,252 INFO L124 PetriNetUnfolderBase]: 940/1723 cut-off events. [2024-06-21 19:18:14,252 INFO L125 PetriNetUnfolderBase]: For 123821/123821 co-relation queries the response was YES. [2024-06-21 19:18:14,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11312 conditions, 1723 events. 940/1723 cut-off events. For 123821/123821 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 10258 event pairs, 271 based on Foata normal form. 2/1725 useless extension candidates. Maximal degree in co-relation 11124. Up to 1677 conditions per place. [2024-06-21 19:18:14,273 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 417 selfloop transitions, 23 changer transitions 0/442 dead transitions. [2024-06-21 19:18:14,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 494 places, 442 transitions, 6417 flow [2024-06-21 19:18:14,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:18:14,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:18:14,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 108 transitions. [2024-06-21 19:18:14,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31671554252199413 [2024-06-21 19:18:14,274 INFO L175 Difference]: Start difference. First operand has 484 places, 431 transitions, 5483 flow. Second operand 11 states and 108 transitions. [2024-06-21 19:18:14,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 494 places, 442 transitions, 6417 flow [2024-06-21 19:18:14,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 484 places, 442 transitions, 6310 flow, removed 28 selfloop flow, removed 10 redundant places. [2024-06-21 19:18:14,962 INFO L231 Difference]: Finished difference. Result has 485 places, 431 transitions, 5427 flow [2024-06-21 19:18:14,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5376, PETRI_DIFFERENCE_MINUEND_PLACES=474, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5427, PETRI_PLACES=485, PETRI_TRANSITIONS=431} [2024-06-21 19:18:14,962 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 455 predicate places. [2024-06-21 19:18:14,962 INFO L495 AbstractCegarLoop]: Abstraction has has 485 places, 431 transitions, 5427 flow [2024-06-21 19:18:14,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:14,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:18:14,962 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:18:14,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-21 19:18:14,963 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 19:18:14,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:18:14,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1901973867, now seen corresponding path program 5 times [2024-06-21 19:18:14,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:18:14,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387190651] [2024-06-21 19:18:14,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:18:14,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:18:14,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:18:16,526 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 19:18:16,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:18:16,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387190651] [2024-06-21 19:18:16,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387190651] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:18:16,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:18:16,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:18:16,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357068314] [2024-06-21 19:18:16,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:18:16,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:18:16,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:18:16,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:18:16,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:18:16,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:18:16,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 485 places, 431 transitions, 5427 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 19:18:16,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:18:16,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:18:16,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:18:17,151 INFO L124 PetriNetUnfolderBase]: 938/1720 cut-off events. [2024-06-21 19:18:17,151 INFO L125 PetriNetUnfolderBase]: For 106128/106128 co-relation queries the response was YES. [2024-06-21 19:18:17,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11067 conditions, 1720 events. 938/1720 cut-off events. For 106128/106128 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 10268 event pairs, 271 based on Foata normal form. 1/1721 useless extension candidates. Maximal degree in co-relation 10878. Up to 1686 conditions per place. [2024-06-21 19:18:17,173 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 419 selfloop transitions, 19 changer transitions 0/440 dead transitions. [2024-06-21 19:18:17,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 495 places, 440 transitions, 6323 flow [2024-06-21 19:18:17,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:18:17,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:18:17,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 102 transitions. [2024-06-21 19:18:17,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2991202346041056 [2024-06-21 19:18:17,174 INFO L175 Difference]: Start difference. First operand has 485 places, 431 transitions, 5427 flow. Second operand 11 states and 102 transitions. [2024-06-21 19:18:17,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 495 places, 440 transitions, 6323 flow [2024-06-21 19:18:17,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 483 places, 440 transitions, 6239 flow, removed 12 selfloop flow, removed 12 redundant places. [2024-06-21 19:18:17,872 INFO L231 Difference]: Finished difference. Result has 484 places, 431 transitions, 5387 flow [2024-06-21 19:18:17,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5343, PETRI_DIFFERENCE_MINUEND_PLACES=473, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5387, PETRI_PLACES=484, PETRI_TRANSITIONS=431} [2024-06-21 19:18:17,873 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 454 predicate places. [2024-06-21 19:18:17,873 INFO L495 AbstractCegarLoop]: Abstraction has has 484 places, 431 transitions, 5387 flow [2024-06-21 19:18:17,873 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 19:18:17,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:18:17,873 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 19:18:17,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-21 19:18:17,874 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 19:18:17,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:18:17,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1643369731, now seen corresponding path program 1 times [2024-06-21 19:18:17,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:18:17,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706132511] [2024-06-21 19:18:17,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:18:17,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:18:17,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:18:19,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:18:19,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:18:19,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706132511] [2024-06-21 19:18:19,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706132511] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:18:19,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:18:19,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:18:19,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034301131] [2024-06-21 19:18:19,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:18:19,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:18:19,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:18:19,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:18:19,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:18:19,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:18:19,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 484 places, 431 transitions, 5387 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 19:18:19,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:18:19,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:18:19,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:18:19,972 INFO L124 PetriNetUnfolderBase]: 954/1752 cut-off events. [2024-06-21 19:18:19,972 INFO L125 PetriNetUnfolderBase]: For 115678/115678 co-relation queries the response was YES. [2024-06-21 19:18:19,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11219 conditions, 1752 events. 954/1752 cut-off events. For 115678/115678 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 10512 event pairs, 117 based on Foata normal form. 2/1754 useless extension candidates. Maximal degree in co-relation 11031. Up to 1492 conditions per place. [2024-06-21 19:18:19,996 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 410 selfloop transitions, 42 changer transitions 0/454 dead transitions. [2024-06-21 19:18:19,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 493 places, 454 transitions, 6406 flow [2024-06-21 19:18:19,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:18:19,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:18:19,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-21 19:18:19,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33548387096774196 [2024-06-21 19:18:19,997 INFO L175 Difference]: Start difference. First operand has 484 places, 431 transitions, 5387 flow. Second operand 10 states and 104 transitions. [2024-06-21 19:18:19,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 493 places, 454 transitions, 6406 flow [2024-06-21 19:18:20,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 481 places, 454 transitions, 6343 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-21 19:18:20,692 INFO L231 Difference]: Finished difference. Result has 485 places, 435 transitions, 5525 flow [2024-06-21 19:18:20,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5324, PETRI_DIFFERENCE_MINUEND_PLACES=472, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5525, PETRI_PLACES=485, PETRI_TRANSITIONS=435} [2024-06-21 19:18:20,692 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 455 predicate places. [2024-06-21 19:18:20,692 INFO L495 AbstractCegarLoop]: Abstraction has has 485 places, 435 transitions, 5525 flow [2024-06-21 19:18:20,692 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 19:18:20,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:18:20,692 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 19:18:20,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-21 19:18:20,693 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 19:18:20,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:18:20,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1147707195, now seen corresponding path program 2 times [2024-06-21 19:18:20,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:18:20,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180886398] [2024-06-21 19:18:20,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:18:20,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:18:20,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:18:22,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:18:22,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:18:22,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180886398] [2024-06-21 19:18:22,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180886398] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:18:22,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:18:22,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:18:22,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013107283] [2024-06-21 19:18:22,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:18:22,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:18:22,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:18:22,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:18:22,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:18:22,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:18:22,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 485 places, 435 transitions, 5525 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 19:18:22,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:18:22,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:18:22,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:18:22,991 INFO L124 PetriNetUnfolderBase]: 965/1773 cut-off events. [2024-06-21 19:18:22,991 INFO L125 PetriNetUnfolderBase]: For 131557/131557 co-relation queries the response was YES. [2024-06-21 19:18:23,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11722 conditions, 1773 events. 965/1773 cut-off events. For 131557/131557 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 10693 event pairs, 121 based on Foata normal form. 2/1775 useless extension candidates. Maximal degree in co-relation 11532. Up to 1280 conditions per place. [2024-06-21 19:18:23,010 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 392 selfloop transitions, 63 changer transitions 0/457 dead transitions. [2024-06-21 19:18:23,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 494 places, 457 transitions, 6756 flow [2024-06-21 19:18:23,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:18:23,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:18:23,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-21 19:18:23,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36451612903225805 [2024-06-21 19:18:23,011 INFO L175 Difference]: Start difference. First operand has 485 places, 435 transitions, 5525 flow. Second operand 10 states and 113 transitions. [2024-06-21 19:18:23,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 494 places, 457 transitions, 6756 flow [2024-06-21 19:18:23,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 489 places, 457 transitions, 6656 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-06-21 19:18:23,908 INFO L231 Difference]: Finished difference. Result has 490 places, 437 transitions, 5585 flow [2024-06-21 19:18:23,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5425, PETRI_DIFFERENCE_MINUEND_PLACES=480, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5585, PETRI_PLACES=490, PETRI_TRANSITIONS=437} [2024-06-21 19:18:23,908 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 460 predicate places. [2024-06-21 19:18:23,908 INFO L495 AbstractCegarLoop]: Abstraction has has 490 places, 437 transitions, 5585 flow [2024-06-21 19:18:23,909 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 19:18:23,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:18:23,909 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 19:18:23,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-21 19:18:23,909 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 19:18:23,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:18:23,910 INFO L85 PathProgramCache]: Analyzing trace with hash -953302597, now seen corresponding path program 3 times [2024-06-21 19:18:23,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:18:23,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17100570] [2024-06-21 19:18:23,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:18:23,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:18:23,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:18:25,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:18:25,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:18:25,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17100570] [2024-06-21 19:18:25,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17100570] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:18:25,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:18:25,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:18:25,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207805309] [2024-06-21 19:18:25,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:18:25,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:18:25,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:18:25,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:18:25,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:18:25,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:18:25,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 490 places, 437 transitions, 5585 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 19:18:25,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:18:25,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:18:25,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:18:26,135 INFO L124 PetriNetUnfolderBase]: 976/1794 cut-off events. [2024-06-21 19:18:26,135 INFO L125 PetriNetUnfolderBase]: For 149247/149247 co-relation queries the response was YES. [2024-06-21 19:18:26,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12108 conditions, 1794 events. 976/1794 cut-off events. For 149247/149247 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 10850 event pairs, 164 based on Foata normal form. 2/1796 useless extension candidates. Maximal degree in co-relation 11917. Up to 1529 conditions per place. [2024-06-21 19:18:26,160 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 381 selfloop transitions, 74 changer transitions 0/457 dead transitions. [2024-06-21 19:18:26,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 499 places, 457 transitions, 6818 flow [2024-06-21 19:18:26,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:18:26,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:18:26,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-21 19:18:26,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3580645161290323 [2024-06-21 19:18:26,161 INFO L175 Difference]: Start difference. First operand has 490 places, 437 transitions, 5585 flow. Second operand 10 states and 111 transitions. [2024-06-21 19:18:26,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 499 places, 457 transitions, 6818 flow [2024-06-21 19:18:27,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 493 places, 457 transitions, 6724 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-21 19:18:27,075 INFO L231 Difference]: Finished difference. Result has 494 places, 439 transitions, 5678 flow [2024-06-21 19:18:27,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5495, PETRI_DIFFERENCE_MINUEND_PLACES=484, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5678, PETRI_PLACES=494, PETRI_TRANSITIONS=439} [2024-06-21 19:18:27,076 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 464 predicate places. [2024-06-21 19:18:27,076 INFO L495 AbstractCegarLoop]: Abstraction has has 494 places, 439 transitions, 5678 flow [2024-06-21 19:18:27,076 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 19:18:27,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:18:27,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:18:27,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-21 19:18:27,076 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 19:18:27,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:18:27,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1531091889, now seen corresponding path program 4 times [2024-06-21 19:18:27,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:18:27,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137599673] [2024-06-21 19:18:27,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:18:27,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:18:27,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:18:28,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:18:28,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:18:28,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137599673] [2024-06-21 19:18:28,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137599673] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:18:28,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:18:28,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:18:28,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504581753] [2024-06-21 19:18:28,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:18:28,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:18:28,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:18:28,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:18:28,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:18:28,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:18:28,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 494 places, 439 transitions, 5678 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 19:18:28,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:18:28,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:18:28,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:18:29,295 INFO L124 PetriNetUnfolderBase]: 973/1789 cut-off events. [2024-06-21 19:18:29,295 INFO L125 PetriNetUnfolderBase]: For 136274/136274 co-relation queries the response was YES. [2024-06-21 19:18:29,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11935 conditions, 1789 events. 973/1789 cut-off events. For 136274/136274 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 10819 event pairs, 145 based on Foata normal form. 2/1791 useless extension candidates. Maximal degree in co-relation 11742. Up to 1426 conditions per place. [2024-06-21 19:18:29,320 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 387 selfloop transitions, 69 changer transitions 0/458 dead transitions. [2024-06-21 19:18:29,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 503 places, 458 transitions, 6889 flow [2024-06-21 19:18:29,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:18:29,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:18:29,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-21 19:18:29,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36129032258064514 [2024-06-21 19:18:29,321 INFO L175 Difference]: Start difference. First operand has 494 places, 439 transitions, 5678 flow. Second operand 10 states and 112 transitions. [2024-06-21 19:18:29,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 503 places, 458 transitions, 6889 flow [2024-06-21 19:18:30,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 497 places, 458 transitions, 6783 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-21 19:18:30,020 INFO L231 Difference]: Finished difference. Result has 498 places, 439 transitions, 5718 flow [2024-06-21 19:18:30,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5572, PETRI_DIFFERENCE_MINUEND_PLACES=488, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5718, PETRI_PLACES=498, PETRI_TRANSITIONS=439} [2024-06-21 19:18:30,020 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 468 predicate places. [2024-06-21 19:18:30,020 INFO L495 AbstractCegarLoop]: Abstraction has has 498 places, 439 transitions, 5718 flow [2024-06-21 19:18:30,020 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 19:18:30,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:18:30,021 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 19:18:30,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-21 19:18:30,021 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 19:18:30,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:18:30,021 INFO L85 PathProgramCache]: Analyzing trace with hash -283918723, now seen corresponding path program 5 times [2024-06-21 19:18:30,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:18:30,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287289313] [2024-06-21 19:18:30,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:18:30,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:18:30,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:18:31,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:18:31,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:18:31,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287289313] [2024-06-21 19:18:31,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287289313] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:18:31,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:18:31,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:18:31,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438017169] [2024-06-21 19:18:31,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:18:31,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:18:31,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:18:31,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:18:31,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:18:31,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:18:31,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 498 places, 439 transitions, 5718 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 19:18:31,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:18:31,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:18:31,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:18:32,421 INFO L124 PetriNetUnfolderBase]: 970/1784 cut-off events. [2024-06-21 19:18:32,422 INFO L125 PetriNetUnfolderBase]: For 123289/123289 co-relation queries the response was YES. [2024-06-21 19:18:32,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11770 conditions, 1784 events. 970/1784 cut-off events. For 123289/123289 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 10796 event pairs, 169 based on Foata normal form. 2/1786 useless extension candidates. Maximal degree in co-relation 11575. Up to 1588 conditions per place. [2024-06-21 19:18:32,446 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 376 selfloop transitions, 77 changer transitions 0/455 dead transitions. [2024-06-21 19:18:32,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 507 places, 455 transitions, 6669 flow [2024-06-21 19:18:32,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:18:32,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:18:32,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-21 19:18:32,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-21 19:18:32,447 INFO L175 Difference]: Start difference. First operand has 498 places, 439 transitions, 5718 flow. Second operand 10 states and 109 transitions. [2024-06-21 19:18:32,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 507 places, 455 transitions, 6669 flow [2024-06-21 19:18:33,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 497 places, 455 transitions, 6461 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-06-21 19:18:33,170 INFO L231 Difference]: Finished difference. Result has 498 places, 439 transitions, 5669 flow [2024-06-21 19:18:33,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5510, PETRI_DIFFERENCE_MINUEND_PLACES=488, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5669, PETRI_PLACES=498, PETRI_TRANSITIONS=439} [2024-06-21 19:18:33,171 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 468 predicate places. [2024-06-21 19:18:33,171 INFO L495 AbstractCegarLoop]: Abstraction has has 498 places, 439 transitions, 5669 flow [2024-06-21 19:18:33,171 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 19:18:33,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:18:33,171 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 19:18:33,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-21 19:18:33,172 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 19:18:33,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:18:33,172 INFO L85 PathProgramCache]: Analyzing trace with hash 6530985, now seen corresponding path program 1 times [2024-06-21 19:18:33,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:18:33,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307156552] [2024-06-21 19:18:33,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:18:33,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:18:33,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:18:35,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:18:35,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:18:35,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307156552] [2024-06-21 19:18:35,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307156552] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:18:35,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:18:35,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:18:35,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507767107] [2024-06-21 19:18:35,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:18:35,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:18:35,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:18:35,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:18:35,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:18:35,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:18:35,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 498 places, 439 transitions, 5669 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 19:18:35,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:18:35,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:18:35,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:18:35,708 INFO L124 PetriNetUnfolderBase]: 1016/1879 cut-off events. [2024-06-21 19:18:35,708 INFO L125 PetriNetUnfolderBase]: For 253730/253730 co-relation queries the response was YES. [2024-06-21 19:18:35,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13708 conditions, 1879 events. 1016/1879 cut-off events. For 253730/253730 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 11420 event pairs, 133 based on Foata normal form. 8/1887 useless extension candidates. Maximal degree in co-relation 13513. Up to 1363 conditions per place. [2024-06-21 19:18:35,734 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 313 selfloop transitions, 144 changer transitions 7/466 dead transitions. [2024-06-21 19:18:35,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 508 places, 466 transitions, 7397 flow [2024-06-21 19:18:35,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:18:35,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:18:35,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-21 19:18:35,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41055718475073316 [2024-06-21 19:18:35,735 INFO L175 Difference]: Start difference. First operand has 498 places, 439 transitions, 5669 flow. Second operand 11 states and 140 transitions. [2024-06-21 19:18:35,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 508 places, 466 transitions, 7397 flow [2024-06-21 19:18:36,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 500 places, 466 transitions, 7246 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-21 19:18:36,857 INFO L231 Difference]: Finished difference. Result has 502 places, 439 transitions, 5882 flow [2024-06-21 19:18:36,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5518, PETRI_DIFFERENCE_MINUEND_PLACES=490, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5882, PETRI_PLACES=502, PETRI_TRANSITIONS=439} [2024-06-21 19:18:36,858 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 472 predicate places. [2024-06-21 19:18:36,858 INFO L495 AbstractCegarLoop]: Abstraction has has 502 places, 439 transitions, 5882 flow [2024-06-21 19:18:36,858 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 19:18:36,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:18:36,858 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 19:18:36,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-21 19:18:36,858 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 19:18:36,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:18:36,858 INFO L85 PathProgramCache]: Analyzing trace with hash 6521685, now seen corresponding path program 2 times [2024-06-21 19:18:36,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:18:36,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736675975] [2024-06-21 19:18:36,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:18:36,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:18:36,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:18:38,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:18:38,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:18:38,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736675975] [2024-06-21 19:18:38,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736675975] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:18:38,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:18:38,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 19:18:38,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598984483] [2024-06-21 19:18:38,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:18:38,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 19:18:38,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:18:38,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 19:18:38,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-21 19:18:39,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:18:39,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 502 places, 439 transitions, 5882 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:39,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:18:39,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:18:39,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:18:39,597 INFO L124 PetriNetUnfolderBase]: 995/1836 cut-off events. [2024-06-21 19:18:39,597 INFO L125 PetriNetUnfolderBase]: For 197699/197699 co-relation queries the response was YES. [2024-06-21 19:18:39,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13420 conditions, 1836 events. 995/1836 cut-off events. For 197699/197699 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 11083 event pairs, 132 based on Foata normal form. 2/1838 useless extension candidates. Maximal degree in co-relation 13223. Up to 1586 conditions per place. [2024-06-21 19:18:39,620 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 343 selfloop transitions, 111 changer transitions 0/456 dead transitions. [2024-06-21 19:18:39,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 512 places, 456 transitions, 6893 flow [2024-06-21 19:18:39,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:18:39,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:18:39,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-21 19:18:39,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-21 19:18:39,621 INFO L175 Difference]: Start difference. First operand has 502 places, 439 transitions, 5882 flow. Second operand 12 states and 138 transitions. [2024-06-21 19:18:39,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 512 places, 456 transitions, 6893 flow [2024-06-21 19:18:40,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 504 places, 456 transitions, 6630 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-21 19:18:40,627 INFO L231 Difference]: Finished difference. Result has 505 places, 442 transitions, 5918 flow [2024-06-21 19:18:40,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5619, PETRI_DIFFERENCE_MINUEND_PLACES=493, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5918, PETRI_PLACES=505, PETRI_TRANSITIONS=442} [2024-06-21 19:18:40,627 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 475 predicate places. [2024-06-21 19:18:40,628 INFO L495 AbstractCegarLoop]: Abstraction has has 505 places, 442 transitions, 5918 flow [2024-06-21 19:18:40,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:40,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:18:40,628 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 19:18:40,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-21 19:18:40,628 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 19:18:40,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:18:40,629 INFO L85 PathProgramCache]: Analyzing trace with hash 675632573, now seen corresponding path program 6 times [2024-06-21 19:18:40,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:18:40,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715170451] [2024-06-21 19:18:40,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:18:40,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:18:40,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:18:42,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:18:42,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:18:42,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715170451] [2024-06-21 19:18:42,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715170451] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:18:42,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:18:42,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:18:42,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895646109] [2024-06-21 19:18:42,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:18:42,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:18:42,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:18:42,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:18:42,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:18:42,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:18:42,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 505 places, 442 transitions, 5918 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 19:18:42,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:18:42,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:18:42,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:18:43,336 INFO L124 PetriNetUnfolderBase]: 999/1844 cut-off events. [2024-06-21 19:18:43,336 INFO L125 PetriNetUnfolderBase]: For 197612/197612 co-relation queries the response was YES. [2024-06-21 19:18:43,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13457 conditions, 1844 events. 999/1844 cut-off events. For 197612/197612 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 11126 event pairs, 132 based on Foata normal form. 2/1846 useless extension candidates. Maximal degree in co-relation 13259. Up to 1495 conditions per place. [2024-06-21 19:18:43,361 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 320 selfloop transitions, 135 changer transitions 0/457 dead transitions. [2024-06-21 19:18:43,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 515 places, 457 transitions, 6883 flow [2024-06-21 19:18:43,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:18:43,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:18:43,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-21 19:18:43,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375366568914956 [2024-06-21 19:18:43,362 INFO L175 Difference]: Start difference. First operand has 505 places, 442 transitions, 5918 flow. Second operand 11 states and 128 transitions. [2024-06-21 19:18:43,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 515 places, 457 transitions, 6883 flow [2024-06-21 19:18:44,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 508 places, 457 transitions, 6672 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-06-21 19:18:44,393 INFO L231 Difference]: Finished difference. Result has 509 places, 443 transitions, 5998 flow [2024-06-21 19:18:44,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5708, PETRI_DIFFERENCE_MINUEND_PLACES=498, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5998, PETRI_PLACES=509, PETRI_TRANSITIONS=443} [2024-06-21 19:18:44,394 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 479 predicate places. [2024-06-21 19:18:44,394 INFO L495 AbstractCegarLoop]: Abstraction has has 509 places, 443 transitions, 5998 flow [2024-06-21 19:18:44,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:44,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:18:44,394 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:18:44,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-21 19:18:44,395 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 19:18:44,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:18:44,395 INFO L85 PathProgramCache]: Analyzing trace with hash 675632790, now seen corresponding path program 1 times [2024-06-21 19:18:44,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:18:44,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548354155] [2024-06-21 19:18:44,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:18:44,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:18:44,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:18:46,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:18:46,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:18:46,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548354155] [2024-06-21 19:18:46,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548354155] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:18:46,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:18:46,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:18:46,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491211758] [2024-06-21 19:18:46,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:18:46,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:18:46,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:18:46,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:18:46,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:18:46,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:18:46,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 509 places, 443 transitions, 5998 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 19:18:46,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:18:46,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:18:46,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:18:46,757 INFO L124 PetriNetUnfolderBase]: 997/1841 cut-off events. [2024-06-21 19:18:46,758 INFO L125 PetriNetUnfolderBase]: For 183979/183979 co-relation queries the response was YES. [2024-06-21 19:18:46,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13410 conditions, 1841 events. 997/1841 cut-off events. For 183979/183979 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 11143 event pairs, 132 based on Foata normal form. 1/1842 useless extension candidates. Maximal degree in co-relation 13210. Up to 1465 conditions per place. [2024-06-21 19:18:46,783 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 308 selfloop transitions, 144 changer transitions 0/454 dead transitions. [2024-06-21 19:18:46,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 518 places, 454 transitions, 6928 flow [2024-06-21 19:18:46,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:18:46,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:18:46,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-21 19:18:46,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-21 19:18:46,784 INFO L175 Difference]: Start difference. First operand has 509 places, 443 transitions, 5998 flow. Second operand 10 states and 120 transitions. [2024-06-21 19:18:46,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 518 places, 454 transitions, 6928 flow [2024-06-21 19:18:47,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 509 places, 454 transitions, 6610 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-21 19:18:47,794 INFO L231 Difference]: Finished difference. Result has 510 places, 443 transitions, 5992 flow [2024-06-21 19:18:47,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5680, PETRI_DIFFERENCE_MINUEND_PLACES=500, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=443, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5992, PETRI_PLACES=510, PETRI_TRANSITIONS=443} [2024-06-21 19:18:47,795 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 480 predicate places. [2024-06-21 19:18:47,795 INFO L495 AbstractCegarLoop]: Abstraction has has 510 places, 443 transitions, 5992 flow [2024-06-21 19:18:47,795 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 19:18:47,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:18:47,795 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 19:18:47,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-21 19:18:47,795 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 19:18:47,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:18:47,795 INFO L85 PathProgramCache]: Analyzing trace with hash 474543323, now seen corresponding path program 7 times [2024-06-21 19:18:47,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:18:47,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339571056] [2024-06-21 19:18:47,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:18:47,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:18:47,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:18:49,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:18:49,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:18:49,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339571056] [2024-06-21 19:18:49,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339571056] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:18:49,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:18:49,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:18:49,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136240406] [2024-06-21 19:18:49,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:18:49,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:18:49,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:18:49,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:18:49,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:18:49,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:18:49,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 510 places, 443 transitions, 5992 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 19:18:49,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:18:49,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:18:49,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:18:50,566 INFO L124 PetriNetUnfolderBase]: 1026/1900 cut-off events. [2024-06-21 19:18:50,566 INFO L125 PetriNetUnfolderBase]: For 258831/258831 co-relation queries the response was YES. [2024-06-21 19:18:50,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13764 conditions, 1900 events. 1026/1900 cut-off events. For 258831/258831 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 11558 event pairs, 138 based on Foata normal form. 10/1910 useless extension candidates. Maximal degree in co-relation 13563. Up to 1626 conditions per place. [2024-06-21 19:18:50,590 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 376 selfloop transitions, 83 changer transitions 9/470 dead transitions. [2024-06-21 19:18:50,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 520 places, 470 transitions, 7147 flow [2024-06-21 19:18:50,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:18:50,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:18:50,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-21 19:18:50,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2024-06-21 19:18:50,591 INFO L175 Difference]: Start difference. First operand has 510 places, 443 transitions, 5992 flow. Second operand 11 states and 136 transitions. [2024-06-21 19:18:50,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 520 places, 470 transitions, 7147 flow [2024-06-21 19:18:51,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 511 places, 470 transitions, 6843 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-21 19:18:51,685 INFO L231 Difference]: Finished difference. Result has 513 places, 447 transitions, 5916 flow [2024-06-21 19:18:51,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5698, PETRI_DIFFERENCE_MINUEND_PLACES=501, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=443, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5916, PETRI_PLACES=513, PETRI_TRANSITIONS=447} [2024-06-21 19:18:51,685 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 483 predicate places. [2024-06-21 19:18:51,685 INFO L495 AbstractCegarLoop]: Abstraction has has 513 places, 447 transitions, 5916 flow [2024-06-21 19:18:51,685 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 19:18:51,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:18:51,686 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 19:18:51,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-21 19:18:51,686 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 19:18:51,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:18:51,686 INFO L85 PathProgramCache]: Analyzing trace with hash -383736561, now seen corresponding path program 8 times [2024-06-21 19:18:51,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:18:51,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046560717] [2024-06-21 19:18:51,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:18:51,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:18:51,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:18:53,654 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 19:18:53,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:18:53,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046560717] [2024-06-21 19:18:53,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046560717] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:18:53,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:18:53,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:18:53,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289338339] [2024-06-21 19:18:53,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:18:53,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:18:53,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:18:53,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:18:53,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:18:53,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:18:53,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 513 places, 447 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 19:18:53,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:18:53,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:18:53,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:18:54,443 INFO L124 PetriNetUnfolderBase]: 1031/1911 cut-off events. [2024-06-21 19:18:54,443 INFO L125 PetriNetUnfolderBase]: For 260981/260981 co-relation queries the response was YES. [2024-06-21 19:18:54,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13730 conditions, 1911 events. 1031/1911 cut-off events. For 260981/260981 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 11670 event pairs, 140 based on Foata normal form. 10/1921 useless extension candidates. Maximal degree in co-relation 13528. Up to 1637 conditions per place. [2024-06-21 19:18:54,470 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 386 selfloop transitions, 76 changer transitions 9/473 dead transitions. [2024-06-21 19:18:54,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 523 places, 473 transitions, 7065 flow [2024-06-21 19:18:54,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:18:54,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:18:54,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-21 19:18:54,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2024-06-21 19:18:54,471 INFO L175 Difference]: Start difference. First operand has 513 places, 447 transitions, 5916 flow. Second operand 11 states and 136 transitions. [2024-06-21 19:18:54,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 523 places, 473 transitions, 7065 flow [2024-06-21 19:18:55,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 518 places, 473 transitions, 6931 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-21 19:18:55,700 INFO L231 Difference]: Finished difference. Result has 520 places, 450 transitions, 5984 flow [2024-06-21 19:18:55,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5789, PETRI_DIFFERENCE_MINUEND_PLACES=508, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=447, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5984, PETRI_PLACES=520, PETRI_TRANSITIONS=450} [2024-06-21 19:18:55,701 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 490 predicate places. [2024-06-21 19:18:55,701 INFO L495 AbstractCegarLoop]: Abstraction has has 520 places, 450 transitions, 5984 flow [2024-06-21 19:18:55,701 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 19:18:55,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:18:55,701 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 19:18:55,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-21 19:18:55,701 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 19:18:55,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:18:55,702 INFO L85 PathProgramCache]: Analyzing trace with hash 668275343, now seen corresponding path program 9 times [2024-06-21 19:18:55,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:18:55,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316164964] [2024-06-21 19:18:55,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:18:55,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:18:55,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:18:57,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:18:57,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:18:57,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316164964] [2024-06-21 19:18:57,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316164964] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:18:57,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:18:57,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:18:57,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451445485] [2024-06-21 19:18:57,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:18:57,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:18:57,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:18:57,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:18:57,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:18:57,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:18:57,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 520 places, 450 transitions, 5984 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 19:18:57,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:18:57,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:18:57,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:18:58,443 INFO L124 PetriNetUnfolderBase]: 1022/1892 cut-off events. [2024-06-21 19:18:58,443 INFO L125 PetriNetUnfolderBase]: For 214950/214950 co-relation queries the response was YES. [2024-06-21 19:18:58,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13921 conditions, 1892 events. 1022/1892 cut-off events. For 214950/214950 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 11569 event pairs, 135 based on Foata normal form. 2/1894 useless extension candidates. Maximal degree in co-relation 13717. Up to 1620 conditions per place. [2024-06-21 19:18:58,470 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 368 selfloop transitions, 99 changer transitions 0/469 dead transitions. [2024-06-21 19:18:58,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 531 places, 469 transitions, 7283 flow [2024-06-21 19:18:58,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:18:58,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:18:58,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-21 19:18:58,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3736559139784946 [2024-06-21 19:18:58,472 INFO L175 Difference]: Start difference. First operand has 520 places, 450 transitions, 5984 flow. Second operand 12 states and 139 transitions. [2024-06-21 19:18:58,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 531 places, 469 transitions, 7283 flow [2024-06-21 19:18:59,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 525 places, 469 transitions, 7156 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-21 19:18:59,683 INFO L231 Difference]: Finished difference. Result has 527 places, 453 transitions, 6139 flow [2024-06-21 19:18:59,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5857, PETRI_DIFFERENCE_MINUEND_PLACES=514, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=450, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6139, PETRI_PLACES=527, PETRI_TRANSITIONS=453} [2024-06-21 19:18:59,683 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 497 predicate places. [2024-06-21 19:18:59,684 INFO L495 AbstractCegarLoop]: Abstraction has has 527 places, 453 transitions, 6139 flow [2024-06-21 19:18:59,684 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 19:18:59,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:18:59,684 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 19:18:59,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-21 19:18:59,684 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 19:18:59,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:18:59,685 INFO L85 PathProgramCache]: Analyzing trace with hash -527834481, now seen corresponding path program 10 times [2024-06-21 19:18:59,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:18:59,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683228348] [2024-06-21 19:18:59,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:18:59,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:18:59,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:19:01,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:19:01,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:19:01,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683228348] [2024-06-21 19:19:01,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683228348] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:19:01,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:19:01,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:19:01,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200875675] [2024-06-21 19:19:01,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:19:01,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:19:01,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:19:01,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:19:01,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:19:01,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:19:01,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 527 places, 453 transitions, 6139 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 19:19:01,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:19:01,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:19:01,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:19:02,426 INFO L124 PetriNetUnfolderBase]: 1037/1921 cut-off events. [2024-06-21 19:19:02,427 INFO L125 PetriNetUnfolderBase]: For 236145/236145 co-relation queries the response was YES. [2024-06-21 19:19:02,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14497 conditions, 1921 events. 1037/1921 cut-off events. For 236145/236145 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 11780 event pairs, 140 based on Foata normal form. 2/1923 useless extension candidates. Maximal degree in co-relation 14290. Up to 1537 conditions per place. [2024-06-21 19:19:02,452 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 376 selfloop transitions, 93 changer transitions 0/471 dead transitions. [2024-06-21 19:19:02,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 537 places, 471 transitions, 7448 flow [2024-06-21 19:19:02,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:19:02,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:19:02,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-21 19:19:02,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39002932551319647 [2024-06-21 19:19:02,453 INFO L175 Difference]: Start difference. First operand has 527 places, 453 transitions, 6139 flow. Second operand 11 states and 133 transitions. [2024-06-21 19:19:02,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 537 places, 471 transitions, 7448 flow [2024-06-21 19:19:03,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 531 places, 471 transitions, 7310 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-21 19:19:03,751 INFO L231 Difference]: Finished difference. Result has 533 places, 456 transitions, 6277 flow [2024-06-21 19:19:03,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6001, PETRI_DIFFERENCE_MINUEND_PLACES=521, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6277, PETRI_PLACES=533, PETRI_TRANSITIONS=456} [2024-06-21 19:19:03,752 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 503 predicate places. [2024-06-21 19:19:03,752 INFO L495 AbstractCegarLoop]: Abstraction has has 533 places, 456 transitions, 6277 flow [2024-06-21 19:19:03,752 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 19:19:03,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:19:03,752 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 19:19:03,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-21 19:19:03,753 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 19:19:03,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:19:03,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1053316665, now seen corresponding path program 11 times [2024-06-21 19:19:03,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:19:03,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073857843] [2024-06-21 19:19:03,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:19:03,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:19:03,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:19:05,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:19:05,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:19:05,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073857843] [2024-06-21 19:19:05,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073857843] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:19:05,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:19:05,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:19:05,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307965918] [2024-06-21 19:19:05,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:19:05,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:19:05,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:19:05,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:19:05,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:19:06,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:19:06,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 533 places, 456 transitions, 6277 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 19:19:06,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:19:06,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:19:06,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:19:06,851 INFO L124 PetriNetUnfolderBase]: 1073/1997 cut-off events. [2024-06-21 19:19:06,852 INFO L125 PetriNetUnfolderBase]: For 361061/361061 co-relation queries the response was YES. [2024-06-21 19:19:06,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15079 conditions, 1997 events. 1073/1997 cut-off events. For 361061/361061 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 12346 event pairs, 152 based on Foata normal form. 16/2013 useless extension candidates. Maximal degree in co-relation 14869. Up to 1689 conditions per place. [2024-06-21 19:19:06,879 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 388 selfloop transitions, 73 changer transitions 20/483 dead transitions. [2024-06-21 19:19:06,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 545 places, 483 transitions, 7448 flow [2024-06-21 19:19:06,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 19:19:06,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 19:19:06,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 148 transitions. [2024-06-21 19:19:06,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36724565756823824 [2024-06-21 19:19:06,880 INFO L175 Difference]: Start difference. First operand has 533 places, 456 transitions, 6277 flow. Second operand 13 states and 148 transitions. [2024-06-21 19:19:06,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 545 places, 483 transitions, 7448 flow [2024-06-21 19:19:08,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 538 places, 483 transitions, 7283 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-21 19:19:08,338 INFO L231 Difference]: Finished difference. Result has 541 places, 452 transitions, 6237 flow [2024-06-21 19:19:08,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6122, PETRI_DIFFERENCE_MINUEND_PLACES=526, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6237, PETRI_PLACES=541, PETRI_TRANSITIONS=452} [2024-06-21 19:19:08,339 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 511 predicate places. [2024-06-21 19:19:08,339 INFO L495 AbstractCegarLoop]: Abstraction has has 541 places, 452 transitions, 6237 flow [2024-06-21 19:19:08,339 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 19:19:08,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:19:08,339 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 19:19:08,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-21 19:19:08,339 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 19:19:08,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:19:08,340 INFO L85 PathProgramCache]: Analyzing trace with hash -389450481, now seen corresponding path program 12 times [2024-06-21 19:19:08,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:19:08,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207893918] [2024-06-21 19:19:08,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:19:08,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:19:08,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:19:10,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:19:10,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:19:10,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207893918] [2024-06-21 19:19:10,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207893918] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:19:10,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:19:10,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:19:10,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575486552] [2024-06-21 19:19:10,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:19:10,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:19:10,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:19:10,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:19:10,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:19:10,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:19:10,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 541 places, 452 transitions, 6237 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 19:19:10,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:19:10,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:19:10,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:19:10,970 INFO L124 PetriNetUnfolderBase]: 1039/1931 cut-off events. [2024-06-21 19:19:10,971 INFO L125 PetriNetUnfolderBase]: For 243835/243835 co-relation queries the response was YES. [2024-06-21 19:19:10,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14782 conditions, 1931 events. 1039/1931 cut-off events. For 243835/243835 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 11926 event pairs, 144 based on Foata normal form. 2/1933 useless extension candidates. Maximal degree in co-relation 14568. Up to 1515 conditions per place. [2024-06-21 19:19:11,001 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 378 selfloop transitions, 91 changer transitions 0/471 dead transitions. [2024-06-21 19:19:11,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 545 places, 471 transitions, 7553 flow [2024-06-21 19:19:11,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:19:11,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:19:11,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-21 19:19:11,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-21 19:19:11,002 INFO L175 Difference]: Start difference. First operand has 541 places, 452 transitions, 6237 flow. Second operand 11 states and 134 transitions. [2024-06-21 19:19:11,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 545 places, 471 transitions, 7553 flow [2024-06-21 19:19:12,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 534 places, 471 transitions, 7424 flow, removed 14 selfloop flow, removed 11 redundant places. [2024-06-21 19:19:12,442 INFO L231 Difference]: Finished difference. Result has 537 places, 455 transitions, 6394 flow [2024-06-21 19:19:12,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6114, PETRI_DIFFERENCE_MINUEND_PLACES=524, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6394, PETRI_PLACES=537, PETRI_TRANSITIONS=455} [2024-06-21 19:19:12,442 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 507 predicate places. [2024-06-21 19:19:12,442 INFO L495 AbstractCegarLoop]: Abstraction has has 537 places, 455 transitions, 6394 flow [2024-06-21 19:19:12,443 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 19:19:12,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:19:12,443 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 19:19:12,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-21 19:19:12,443 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 19:19:12,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:19:12,443 INFO L85 PathProgramCache]: Analyzing trace with hash -389300751, now seen corresponding path program 13 times [2024-06-21 19:19:12,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:19:12,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906293989] [2024-06-21 19:19:12,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:19:12,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:19:12,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:19:14,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:19:14,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:19:14,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906293989] [2024-06-21 19:19:14,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906293989] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:19:14,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:19:14,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:19:14,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635414301] [2024-06-21 19:19:14,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:19:14,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:19:14,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:19:14,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:19:14,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:19:14,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:19:14,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 537 places, 455 transitions, 6394 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 19:19:14,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:19:14,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:19:14,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:19:15,326 INFO L124 PetriNetUnfolderBase]: 1036/1926 cut-off events. [2024-06-21 19:19:15,326 INFO L125 PetriNetUnfolderBase]: For 225038/225038 co-relation queries the response was YES. [2024-06-21 19:19:15,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14542 conditions, 1926 events. 1036/1926 cut-off events. For 225038/225038 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 11909 event pairs, 149 based on Foata normal form. 2/1928 useless extension candidates. Maximal degree in co-relation 14329. Up to 1581 conditions per place. [2024-06-21 19:19:15,353 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 375 selfloop transitions, 91 changer transitions 0/468 dead transitions. [2024-06-21 19:19:15,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 547 places, 468 transitions, 7356 flow [2024-06-21 19:19:15,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:19:15,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:19:15,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-21 19:19:15,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3812316715542522 [2024-06-21 19:19:15,354 INFO L175 Difference]: Start difference. First operand has 537 places, 455 transitions, 6394 flow. Second operand 11 states and 130 transitions. [2024-06-21 19:19:15,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 547 places, 468 transitions, 7356 flow [2024-06-21 19:19:16,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 540 places, 468 transitions, 7106 flow, removed 43 selfloop flow, removed 7 redundant places. [2024-06-21 19:19:16,574 INFO L231 Difference]: Finished difference. Result has 541 places, 455 transitions, 6330 flow [2024-06-21 19:19:16,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6144, PETRI_DIFFERENCE_MINUEND_PLACES=530, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6330, PETRI_PLACES=541, PETRI_TRANSITIONS=455} [2024-06-21 19:19:16,575 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 511 predicate places. [2024-06-21 19:19:16,575 INFO L495 AbstractCegarLoop]: Abstraction has has 541 places, 455 transitions, 6330 flow [2024-06-21 19:19:16,575 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 19:19:16,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:19:16,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:19:16,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-21 19:19:16,576 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 19:19:16,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:19:16,576 INFO L85 PathProgramCache]: Analyzing trace with hash -531553551, now seen corresponding path program 14 times [2024-06-21 19:19:16,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:19:16,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066808152] [2024-06-21 19:19:16,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:19:16,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:19:16,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:19:18,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:19:18,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:19:18,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066808152] [2024-06-21 19:19:18,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066808152] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:19:18,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:19:18,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:19:18,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420057936] [2024-06-21 19:19:18,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:19:18,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:19:18,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:19:18,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:19:18,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:19:18,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:19:18,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 541 places, 455 transitions, 6330 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 19:19:18,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:19:18,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:19:18,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:19:19,329 INFO L124 PetriNetUnfolderBase]: 1055/1963 cut-off events. [2024-06-21 19:19:19,329 INFO L125 PetriNetUnfolderBase]: For 246213/246213 co-relation queries the response was YES. [2024-06-21 19:19:19,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14968 conditions, 1963 events. 1055/1963 cut-off events. For 246213/246213 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 12194 event pairs, 142 based on Foata normal form. 2/1965 useless extension candidates. Maximal degree in co-relation 14754. Up to 1380 conditions per place. [2024-06-21 19:19:19,353 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 380 selfloop transitions, 94 changer transitions 0/476 dead transitions. [2024-06-21 19:19:19,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 550 places, 476 transitions, 7686 flow [2024-06-21 19:19:19,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:19:19,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:19:19,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-21 19:19:19,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4064516129032258 [2024-06-21 19:19:19,354 INFO L175 Difference]: Start difference. First operand has 541 places, 455 transitions, 6330 flow. Second operand 10 states and 126 transitions. [2024-06-21 19:19:19,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 550 places, 476 transitions, 7686 flow [2024-06-21 19:19:20,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 541 places, 476 transitions, 7506 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-21 19:19:20,770 INFO L231 Difference]: Finished difference. Result has 544 places, 459 transitions, 6459 flow [2024-06-21 19:19:20,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6150, PETRI_DIFFERENCE_MINUEND_PLACES=532, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6459, PETRI_PLACES=544, PETRI_TRANSITIONS=459} [2024-06-21 19:19:20,771 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 514 predicate places. [2024-06-21 19:19:20,771 INFO L495 AbstractCegarLoop]: Abstraction has has 544 places, 459 transitions, 6459 flow [2024-06-21 19:19:20,771 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 19:19:20,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:19:20,771 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 19:19:20,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-21 19:19:20,771 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 19:19:20,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:19:20,771 INFO L85 PathProgramCache]: Analyzing trace with hash 668482733, now seen corresponding path program 15 times [2024-06-21 19:19:20,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:19:20,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128573017] [2024-06-21 19:19:20,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:19:20,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:19:20,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:19:22,731 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 19:19:22,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:19:22,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128573017] [2024-06-21 19:19:22,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128573017] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:19:22,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:19:22,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:19:22,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537906] [2024-06-21 19:19:22,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:19:22,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:19:22,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:19:22,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:19:22,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:19:22,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:19:22,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 544 places, 459 transitions, 6459 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 19:19:22,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:19:22,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:19:22,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:19:23,524 INFO L124 PetriNetUnfolderBase]: 1084/2022 cut-off events. [2024-06-21 19:19:23,524 INFO L125 PetriNetUnfolderBase]: For 322212/322212 co-relation queries the response was YES. [2024-06-21 19:19:23,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15433 conditions, 2022 events. 1084/2022 cut-off events. For 322212/322212 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 12648 event pairs, 156 based on Foata normal form. 10/2032 useless extension candidates. Maximal degree in co-relation 15217. Up to 1753 conditions per place. [2024-06-21 19:19:23,554 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 383 selfloop transitions, 91 changer transitions 9/485 dead transitions. [2024-06-21 19:19:23,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 554 places, 485 transitions, 7638 flow [2024-06-21 19:19:23,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:19:23,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:19:23,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-21 19:19:23,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2024-06-21 19:19:23,555 INFO L175 Difference]: Start difference. First operand has 544 places, 459 transitions, 6459 flow. Second operand 11 states and 136 transitions. [2024-06-21 19:19:23,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 554 places, 485 transitions, 7638 flow [2024-06-21 19:19:25,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 544 places, 485 transitions, 7356 flow, removed 45 selfloop flow, removed 10 redundant places. [2024-06-21 19:19:25,110 INFO L231 Difference]: Finished difference. Result has 546 places, 462 transitions, 6412 flow [2024-06-21 19:19:25,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6181, PETRI_DIFFERENCE_MINUEND_PLACES=534, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=459, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6412, PETRI_PLACES=546, PETRI_TRANSITIONS=462} [2024-06-21 19:19:25,110 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 516 predicate places. [2024-06-21 19:19:25,111 INFO L495 AbstractCegarLoop]: Abstraction has has 546 places, 462 transitions, 6412 flow [2024-06-21 19:19:25,111 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 19:19:25,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:19:25,111 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 19:19:25,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-21 19:19:25,111 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 19:19:25,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:19:25,112 INFO L85 PathProgramCache]: Analyzing trace with hash 668280923, now seen corresponding path program 16 times [2024-06-21 19:19:25,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:19:25,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406337118] [2024-06-21 19:19:25,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:19:25,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:19:25,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:19:27,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:19:27,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:19:27,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406337118] [2024-06-21 19:19:27,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406337118] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:19:27,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:19:27,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:19:27,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038140240] [2024-06-21 19:19:27,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:19:27,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:19:27,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:19:27,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:19:27,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:19:27,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:19:27,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 546 places, 462 transitions, 6412 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 19:19:27,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:19:27,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:19:27,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:19:28,498 INFO L124 PetriNetUnfolderBase]: 1083/2027 cut-off events. [2024-06-21 19:19:28,498 INFO L125 PetriNetUnfolderBase]: For 358283/358283 co-relation queries the response was YES. [2024-06-21 19:19:28,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15013 conditions, 2027 events. 1083/2027 cut-off events. For 358283/358283 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 12663 event pairs, 159 based on Foata normal form. 16/2043 useless extension candidates. Maximal degree in co-relation 14800. Up to 1703 conditions per place. [2024-06-21 19:19:28,528 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 364 selfloop transitions, 98 changer transitions 20/484 dead transitions. [2024-06-21 19:19:28,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 558 places, 484 transitions, 7518 flow [2024-06-21 19:19:28,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 19:19:28,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 19:19:28,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 152 transitions. [2024-06-21 19:19:28,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3771712158808933 [2024-06-21 19:19:28,529 INFO L175 Difference]: Start difference. First operand has 546 places, 462 transitions, 6412 flow. Second operand 13 states and 152 transitions. [2024-06-21 19:19:28,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 558 places, 484 transitions, 7518 flow [2024-06-21 19:19:30,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 551 places, 484 transitions, 7305 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-21 19:19:30,086 INFO L231 Difference]: Finished difference. Result has 554 places, 453 transitions, 6304 flow [2024-06-21 19:19:30,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6199, PETRI_DIFFERENCE_MINUEND_PLACES=539, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=462, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6304, PETRI_PLACES=554, PETRI_TRANSITIONS=453} [2024-06-21 19:19:30,086 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 524 predicate places. [2024-06-21 19:19:30,087 INFO L495 AbstractCegarLoop]: Abstraction has has 554 places, 453 transitions, 6304 flow [2024-06-21 19:19:30,087 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 19:19:30,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:19:30,087 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 19:19:30,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-21 19:19:30,087 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 19:19:30,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:19:30,088 INFO L85 PathProgramCache]: Analyzing trace with hash 468979133, now seen corresponding path program 17 times [2024-06-21 19:19:30,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:19:30,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465286958] [2024-06-21 19:19:30,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:19:30,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:19:30,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:19:32,002 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 19:19:32,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:19:32,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465286958] [2024-06-21 19:19:32,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465286958] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:19:32,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:19:32,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:19:32,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233238807] [2024-06-21 19:19:32,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:19:32,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:19:32,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:19:32,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:19:32,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:19:32,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:19:32,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 554 places, 453 transitions, 6304 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 19:19:32,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:19:32,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:19:32,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:19:32,986 INFO L124 PetriNetUnfolderBase]: 1041/1945 cut-off events. [2024-06-21 19:19:32,986 INFO L125 PetriNetUnfolderBase]: For 236166/236166 co-relation queries the response was YES. [2024-06-21 19:19:33,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14538 conditions, 1945 events. 1041/1945 cut-off events. For 236166/236166 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 12117 event pairs, 151 based on Foata normal form. 2/1947 useless extension candidates. Maximal degree in co-relation 14335. Up to 1606 conditions per place. [2024-06-21 19:19:33,015 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 362 selfloop transitions, 103 changer transitions 0/467 dead transitions. [2024-06-21 19:19:33,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 557 places, 467 transitions, 7286 flow [2024-06-21 19:19:33,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:19:33,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:19:33,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-21 19:19:33,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3782991202346041 [2024-06-21 19:19:33,016 INFO L175 Difference]: Start difference. First operand has 554 places, 453 transitions, 6304 flow. Second operand 11 states and 129 transitions. [2024-06-21 19:19:33,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 557 places, 467 transitions, 7286 flow [2024-06-21 19:19:34,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 545 places, 467 transitions, 7098 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-21 19:19:34,411 INFO L231 Difference]: Finished difference. Result has 546 places, 454 transitions, 6352 flow [2024-06-21 19:19:34,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6116, PETRI_DIFFERENCE_MINUEND_PLACES=535, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6352, PETRI_PLACES=546, PETRI_TRANSITIONS=454} [2024-06-21 19:19:34,411 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 516 predicate places. [2024-06-21 19:19:34,411 INFO L495 AbstractCegarLoop]: Abstraction has has 546 places, 454 transitions, 6352 flow [2024-06-21 19:19:34,412 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 19:19:34,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:19:34,412 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 19:19:34,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-21 19:19:34,412 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 19:19:34,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:19:34,413 INFO L85 PathProgramCache]: Analyzing trace with hash 474335933, now seen corresponding path program 18 times [2024-06-21 19:19:34,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:19:34,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010754610] [2024-06-21 19:19:34,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:19:34,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:19:34,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:19:36,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:19:36,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:19:36,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010754610] [2024-06-21 19:19:36,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010754610] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:19:36,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:19:36,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:19:36,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198390241] [2024-06-21 19:19:36,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:19:36,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:19:36,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:19:36,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:19:36,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:19:36,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:19:36,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 546 places, 454 transitions, 6352 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 19:19:36,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:19:36,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:19:36,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:19:37,201 INFO L124 PetriNetUnfolderBase]: 1056/1974 cut-off events. [2024-06-21 19:19:37,201 INFO L125 PetriNetUnfolderBase]: For 229282/229282 co-relation queries the response was YES. [2024-06-21 19:19:37,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14771 conditions, 1974 events. 1056/1974 cut-off events. For 229282/229282 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 12348 event pairs, 153 based on Foata normal form. 2/1976 useless extension candidates. Maximal degree in co-relation 14571. Up to 1717 conditions per place. [2024-06-21 19:19:37,231 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 384 selfloop transitions, 88 changer transitions 0/474 dead transitions. [2024-06-21 19:19:37,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 557 places, 474 transitions, 7442 flow [2024-06-21 19:19:37,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:19:37,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:19:37,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-21 19:19:37,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3682795698924731 [2024-06-21 19:19:37,232 INFO L175 Difference]: Start difference. First operand has 546 places, 454 transitions, 6352 flow. Second operand 12 states and 137 transitions. [2024-06-21 19:19:37,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 557 places, 474 transitions, 7442 flow [2024-06-21 19:19:38,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 548 places, 474 transitions, 7204 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-21 19:19:38,698 INFO L231 Difference]: Finished difference. Result has 551 places, 459 transitions, 6434 flow [2024-06-21 19:19:38,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6134, PETRI_DIFFERENCE_MINUEND_PLACES=537, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6434, PETRI_PLACES=551, PETRI_TRANSITIONS=459} [2024-06-21 19:19:38,698 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 521 predicate places. [2024-06-21 19:19:38,699 INFO L495 AbstractCegarLoop]: Abstraction has has 551 places, 459 transitions, 6434 flow [2024-06-21 19:19:38,699 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 19:19:38,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:19:38,699 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 19:19:38,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-21 19:19:38,699 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 19:19:38,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:19:38,699 INFO L85 PathProgramCache]: Analyzing trace with hash 468829403, now seen corresponding path program 19 times [2024-06-21 19:19:38,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:19:38,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341353458] [2024-06-21 19:19:38,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:19:38,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:19:38,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:19:40,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:19:40,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:19:40,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341353458] [2024-06-21 19:19:40,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341353458] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:19:40,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:19:40,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:19:40,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376222036] [2024-06-21 19:19:40,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:19:40,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:19:40,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:19:40,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:19:40,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:19:40,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:19:40,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 551 places, 459 transitions, 6434 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 19:19:40,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:19:40,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:19:40,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:19:41,371 INFO L124 PetriNetUnfolderBase]: 1064/1990 cut-off events. [2024-06-21 19:19:41,371 INFO L125 PetriNetUnfolderBase]: For 232808/232808 co-relation queries the response was YES. [2024-06-21 19:19:41,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14909 conditions, 1990 events. 1064/1990 cut-off events. For 232808/232808 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 12474 event pairs, 151 based on Foata normal form. 2/1992 useless extension candidates. Maximal degree in co-relation 14706. Up to 1523 conditions per place. [2024-06-21 19:19:41,404 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 370 selfloop transitions, 105 changer transitions 0/477 dead transitions. [2024-06-21 19:19:41,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 561 places, 477 transitions, 7755 flow [2024-06-21 19:19:41,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:19:41,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:19:41,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-21 19:19:41,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3841642228739003 [2024-06-21 19:19:41,405 INFO L175 Difference]: Start difference. First operand has 551 places, 459 transitions, 6434 flow. Second operand 11 states and 131 transitions. [2024-06-21 19:19:41,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 561 places, 477 transitions, 7755 flow [2024-06-21 19:19:42,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 553 places, 477 transitions, 7541 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-06-21 19:19:42,787 INFO L231 Difference]: Finished difference. Result has 555 places, 461 transitions, 6504 flow [2024-06-21 19:19:42,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6220, PETRI_DIFFERENCE_MINUEND_PLACES=543, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=459, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6504, PETRI_PLACES=555, PETRI_TRANSITIONS=461} [2024-06-21 19:19:42,787 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 525 predicate places. [2024-06-21 19:19:42,787 INFO L495 AbstractCegarLoop]: Abstraction has has 555 places, 461 transitions, 6504 flow [2024-06-21 19:19:42,787 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 19:19:42,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:19:42,787 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 19:19:42,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-21 19:19:42,788 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 19:19:42,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:19:42,788 INFO L85 PathProgramCache]: Analyzing trace with hash 468973553, now seen corresponding path program 20 times [2024-06-21 19:19:42,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:19:42,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25657777] [2024-06-21 19:19:42,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:19:42,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:19:42,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:19:44,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:19:44,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:19:44,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25657777] [2024-06-21 19:19:44,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25657777] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:19:44,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:19:44,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:19:44,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761988932] [2024-06-21 19:19:44,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:19:44,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:19:44,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:19:44,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:19:44,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:19:44,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:19:44,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 555 places, 461 transitions, 6504 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 19:19:44,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:19:44,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:19:44,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:19:45,531 INFO L124 PetriNetUnfolderBase]: 1061/1985 cut-off events. [2024-06-21 19:19:45,531 INFO L125 PetriNetUnfolderBase]: For 219049/219049 co-relation queries the response was YES. [2024-06-21 19:19:45,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14602 conditions, 1985 events. 1061/1985 cut-off events. For 219049/219049 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 12417 event pairs, 152 based on Foata normal form. 2/1987 useless extension candidates. Maximal degree in co-relation 14397. Up to 1591 conditions per place. [2024-06-21 19:19:45,562 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 367 selfloop transitions, 106 changer transitions 0/475 dead transitions. [2024-06-21 19:19:45,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 565 places, 475 transitions, 7482 flow [2024-06-21 19:19:45,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:19:45,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:19:45,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-21 19:19:45,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3812316715542522 [2024-06-21 19:19:45,563 INFO L175 Difference]: Start difference. First operand has 555 places, 461 transitions, 6504 flow. Second operand 11 states and 130 transitions. [2024-06-21 19:19:45,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 565 places, 475 transitions, 7482 flow [2024-06-21 19:19:46,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 553 places, 475 transitions, 7097 flow, removed 43 selfloop flow, removed 12 redundant places. [2024-06-21 19:19:46,869 INFO L231 Difference]: Finished difference. Result has 554 places, 461 transitions, 6339 flow [2024-06-21 19:19:46,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6119, PETRI_DIFFERENCE_MINUEND_PLACES=543, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=461, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6339, PETRI_PLACES=554, PETRI_TRANSITIONS=461} [2024-06-21 19:19:46,869 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 524 predicate places. [2024-06-21 19:19:46,869 INFO L495 AbstractCegarLoop]: Abstraction has has 554 places, 461 transitions, 6339 flow [2024-06-21 19:19:46,869 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 19:19:46,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:19:46,869 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 19:19:46,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-21 19:19:46,869 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 19:19:46,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:19:46,870 INFO L85 PathProgramCache]: Analyzing trace with hash -701799411, now seen corresponding path program 21 times [2024-06-21 19:19:46,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:19:46,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114069495] [2024-06-21 19:19:46,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:19:46,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:19:46,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:19:48,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:19:48,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:19:48,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114069495] [2024-06-21 19:19:48,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114069495] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:19:48,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:19:48,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:19:48,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949765811] [2024-06-21 19:19:48,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:19:48,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:19:48,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:19:48,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:19:48,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:19:48,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:19:48,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 554 places, 461 transitions, 6339 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 19:19:48,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:19:48,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:19:48,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:19:49,664 INFO L124 PetriNetUnfolderBase]: 1072/2006 cut-off events. [2024-06-21 19:19:49,664 INFO L125 PetriNetUnfolderBase]: For 242002/242002 co-relation queries the response was YES. [2024-06-21 19:19:49,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14673 conditions, 2006 events. 1072/2006 cut-off events. For 242002/242002 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 12622 event pairs, 166 based on Foata normal form. 2/2008 useless extension candidates. Maximal degree in co-relation 14472. Up to 1473 conditions per place. [2024-06-21 19:19:49,691 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 339 selfloop transitions, 136 changer transitions 0/477 dead transitions. [2024-06-21 19:19:49,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 564 places, 477 transitions, 7645 flow [2024-06-21 19:19:49,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:19:49,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:19:49,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-21 19:19:49,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39589442815249265 [2024-06-21 19:19:49,693 INFO L175 Difference]: Start difference. First operand has 554 places, 461 transitions, 6339 flow. Second operand 11 states and 135 transitions. [2024-06-21 19:19:49,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 564 places, 477 transitions, 7645 flow [2024-06-21 19:19:51,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 546 places, 477 transitions, 7262 flow, removed 26 selfloop flow, removed 18 redundant places. [2024-06-21 19:19:51,084 INFO L231 Difference]: Finished difference. Result has 547 places, 463 transitions, 6282 flow [2024-06-21 19:19:51,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5960, PETRI_DIFFERENCE_MINUEND_PLACES=536, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=461, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6282, PETRI_PLACES=547, PETRI_TRANSITIONS=463} [2024-06-21 19:19:51,084 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 517 predicate places. [2024-06-21 19:19:51,084 INFO L495 AbstractCegarLoop]: Abstraction has has 547 places, 463 transitions, 6282 flow [2024-06-21 19:19:51,085 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 19:19:51,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:19:51,085 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 19:19:51,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-21 19:19:51,085 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 19:19:51,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:19:51,085 INFO L85 PathProgramCache]: Analyzing trace with hash -701793614, now seen corresponding path program 2 times [2024-06-21 19:19:51,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:19:51,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015434862] [2024-06-21 19:19:51,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:19:51,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:19:51,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:19:53,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:19:53,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:19:53,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015434862] [2024-06-21 19:19:53,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015434862] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:19:53,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:19:53,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:19:53,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295710919] [2024-06-21 19:19:53,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:19:53,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:19:53,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:19:53,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:19:53,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:19:53,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:19:53,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 547 places, 463 transitions, 6282 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 19:19:53,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:19:53,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:19:53,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:19:54,219 INFO L124 PetriNetUnfolderBase]: 1081/2021 cut-off events. [2024-06-21 19:19:54,220 INFO L125 PetriNetUnfolderBase]: For 228790/228790 co-relation queries the response was YES. [2024-06-21 19:19:54,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14452 conditions, 2021 events. 1081/2021 cut-off events. For 228790/228790 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 12714 event pairs, 167 based on Foata normal form. 1/2022 useless extension candidates. Maximal degree in co-relation 14260. Up to 1502 conditions per place. [2024-06-21 19:19:54,249 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 339 selfloop transitions, 139 changer transitions 0/480 dead transitions. [2024-06-21 19:19:54,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 556 places, 480 transitions, 7357 flow [2024-06-21 19:19:54,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:19:54,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:19:54,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-21 19:19:54,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4129032258064516 [2024-06-21 19:19:54,250 INFO L175 Difference]: Start difference. First operand has 547 places, 463 transitions, 6282 flow. Second operand 10 states and 128 transitions. [2024-06-21 19:19:54,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 556 places, 480 transitions, 7357 flow [2024-06-21 19:19:55,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 548 places, 480 transitions, 7074 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-21 19:19:55,555 INFO L231 Difference]: Finished difference. Result has 549 places, 468 transitions, 6380 flow [2024-06-21 19:19:55,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6001, PETRI_DIFFERENCE_MINUEND_PLACES=539, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6380, PETRI_PLACES=549, PETRI_TRANSITIONS=468} [2024-06-21 19:19:55,556 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 519 predicate places. [2024-06-21 19:19:55,556 INFO L495 AbstractCegarLoop]: Abstraction has has 549 places, 468 transitions, 6380 flow [2024-06-21 19:19:55,556 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 19:19:55,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:19:55,556 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 19:19:55,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-21 19:19:55,556 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 19:19:55,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:19:55,556 INFO L85 PathProgramCache]: Analyzing trace with hash 931124849, now seen corresponding path program 22 times [2024-06-21 19:19:55,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:19:55,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158510591] [2024-06-21 19:19:55,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:19:55,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:19:55,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:19:57,632 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 19:19:57,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:19:57,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158510591] [2024-06-21 19:19:57,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158510591] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:19:57,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:19:57,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:19:57,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072161058] [2024-06-21 19:19:57,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:19:57,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:19:57,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:19:57,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:19:57,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:19:57,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:19:57,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 549 places, 468 transitions, 6380 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 19:19:57,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:19:57,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:19:57,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:19:58,329 INFO L124 PetriNetUnfolderBase]: 1085/2029 cut-off events. [2024-06-21 19:19:58,329 INFO L125 PetriNetUnfolderBase]: For 240595/240595 co-relation queries the response was YES. [2024-06-21 19:19:58,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14550 conditions, 2029 events. 1085/2029 cut-off events. For 240595/240595 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 12746 event pairs, 167 based on Foata normal form. 2/2031 useless extension candidates. Maximal degree in co-relation 14357. Up to 1474 conditions per place. [2024-06-21 19:19:58,357 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 346 selfloop transitions, 136 changer transitions 0/484 dead transitions. [2024-06-21 19:19:58,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 559 places, 484 transitions, 7682 flow [2024-06-21 19:19:58,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:19:58,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:19:58,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-21 19:19:58,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2024-06-21 19:19:58,359 INFO L175 Difference]: Start difference. First operand has 549 places, 468 transitions, 6380 flow. Second operand 11 states and 136 transitions. [2024-06-21 19:19:58,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 559 places, 484 transitions, 7682 flow [2024-06-21 19:19:59,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 551 places, 484 transitions, 7355 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-06-21 19:19:59,693 INFO L231 Difference]: Finished difference. Result has 552 places, 469 transitions, 6355 flow [2024-06-21 19:19:59,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6053, PETRI_DIFFERENCE_MINUEND_PLACES=541, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=468, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6355, PETRI_PLACES=552, PETRI_TRANSITIONS=469} [2024-06-21 19:19:59,693 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 522 predicate places. [2024-06-21 19:19:59,693 INFO L495 AbstractCegarLoop]: Abstraction has has 552 places, 469 transitions, 6355 flow [2024-06-21 19:19:59,693 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 19:19:59,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:19:59,694 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 19:19:59,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-21 19:19:59,694 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 19:19:59,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:19:59,694 INFO L85 PathProgramCache]: Analyzing trace with hash 927549929, now seen corresponding path program 23 times [2024-06-21 19:19:59,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:19:59,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922410951] [2024-06-21 19:19:59,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:19:59,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:19:59,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:20:01,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:20:01,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:20:01,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922410951] [2024-06-21 19:20:01,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922410951] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:20:01,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:20:01,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:20:01,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286158148] [2024-06-21 19:20:01,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:20:01,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:20:01,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:20:01,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:20:01,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:20:01,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:20:01,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 552 places, 469 transitions, 6355 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 19:20:01,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:20:01,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:20:01,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:20:01,943 INFO L124 PetriNetUnfolderBase]: 1089/2037 cut-off events. [2024-06-21 19:20:01,943 INFO L125 PetriNetUnfolderBase]: For 245597/245597 co-relation queries the response was YES. [2024-06-21 19:20:01,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14601 conditions, 2037 events. 1089/2037 cut-off events. For 245597/245597 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 12807 event pairs, 167 based on Foata normal form. 2/2039 useless extension candidates. Maximal degree in co-relation 14407. Up to 1341 conditions per place. [2024-06-21 19:20:01,973 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 346 selfloop transitions, 137 changer transitions 0/485 dead transitions. [2024-06-21 19:20:01,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 562 places, 485 transitions, 7657 flow [2024-06-21 19:20:01,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:20:01,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:20:01,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-21 19:20:01,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-21 19:20:01,974 INFO L175 Difference]: Start difference. First operand has 552 places, 469 transitions, 6355 flow. Second operand 11 states and 134 transitions. [2024-06-21 19:20:01,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 562 places, 485 transitions, 7657 flow [2024-06-21 19:20:03,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 553 places, 485 transitions, 7365 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-21 19:20:03,292 INFO L231 Difference]: Finished difference. Result has 554 places, 470 transitions, 6367 flow [2024-06-21 19:20:03,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6063, PETRI_DIFFERENCE_MINUEND_PLACES=543, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=469, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6367, PETRI_PLACES=554, PETRI_TRANSITIONS=470} [2024-06-21 19:20:03,293 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 524 predicate places. [2024-06-21 19:20:03,293 INFO L495 AbstractCegarLoop]: Abstraction has has 554 places, 470 transitions, 6367 flow [2024-06-21 19:20:03,293 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 19:20:03,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:20:03,293 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 19:20:03,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-21 19:20:03,293 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 19:20:03,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:20:03,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1362666851, now seen corresponding path program 24 times [2024-06-21 19:20:03,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:20:03,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249839106] [2024-06-21 19:20:03,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:20:03,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:20:03,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:20:05,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:20:05,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:20:05,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249839106] [2024-06-21 19:20:05,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249839106] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:20:05,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:20:05,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:20:05,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968668769] [2024-06-21 19:20:05,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:20:05,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:20:05,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:20:05,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:20:05,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:20:05,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:20:05,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 554 places, 470 transitions, 6367 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 19:20:05,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:20:05,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:20:05,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:20:05,969 INFO L124 PetriNetUnfolderBase]: 1086/2032 cut-off events. [2024-06-21 19:20:05,969 INFO L125 PetriNetUnfolderBase]: For 229433/229433 co-relation queries the response was YES. [2024-06-21 19:20:05,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14291 conditions, 2032 events. 1086/2032 cut-off events. For 229433/229433 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 12796 event pairs, 172 based on Foata normal form. 2/2034 useless extension candidates. Maximal degree in co-relation 14096. Up to 1516 conditions per place. [2024-06-21 19:20:05,999 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 344 selfloop transitions, 136 changer transitions 0/482 dead transitions. [2024-06-21 19:20:05,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 564 places, 482 transitions, 7359 flow [2024-06-21 19:20:06,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:20:06,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:20:06,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-21 19:20:06,000 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39002932551319647 [2024-06-21 19:20:06,000 INFO L175 Difference]: Start difference. First operand has 554 places, 470 transitions, 6367 flow. Second operand 11 states and 133 transitions. [2024-06-21 19:20:06,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 564 places, 482 transitions, 7359 flow [2024-06-21 19:20:07,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 554 places, 482 transitions, 7002 flow, removed 22 selfloop flow, removed 10 redundant places. [2024-06-21 19:20:07,306 INFO L231 Difference]: Finished difference. Result has 555 places, 470 transitions, 6286 flow [2024-06-21 19:20:07,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6010, PETRI_DIFFERENCE_MINUEND_PLACES=544, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=470, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6286, PETRI_PLACES=555, PETRI_TRANSITIONS=470} [2024-06-21 19:20:07,307 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 525 predicate places. [2024-06-21 19:20:07,307 INFO L495 AbstractCegarLoop]: Abstraction has has 555 places, 470 transitions, 6286 flow [2024-06-21 19:20:07,307 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 19:20:07,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:20:07,307 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 19:20:07,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-21 19:20:07,307 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 19:20:07,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:20:07,308 INFO L85 PathProgramCache]: Analyzing trace with hash -366008547, now seen corresponding path program 25 times [2024-06-21 19:20:07,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:20:07,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150316073] [2024-06-21 19:20:07,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:20:07,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:20:07,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:20:09,658 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 19:20:09,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:20:09,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150316073] [2024-06-21 19:20:09,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150316073] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:20:09,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:20:09,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:20:09,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599704720] [2024-06-21 19:20:09,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:20:09,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:20:09,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:20:09,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:20:09,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:20:09,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:20:09,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 555 places, 470 transitions, 6286 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 19:20:09,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:20:09,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:20:09,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:20:10,661 INFO L124 PetriNetUnfolderBase]: 1139/2140 cut-off events. [2024-06-21 19:20:10,661 INFO L125 PetriNetUnfolderBase]: For 414715/414715 co-relation queries the response was YES. [2024-06-21 19:20:10,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16662 conditions, 2140 events. 1139/2140 cut-off events. For 414715/414715 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 13519 event pairs, 186 based on Foata normal form. 8/2148 useless extension candidates. Maximal degree in co-relation 16468. Up to 1588 conditions per place. [2024-06-21 19:20:10,693 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 373 selfloop transitions, 113 changer transitions 10/498 dead transitions. [2024-06-21 19:20:10,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 565 places, 498 transitions, 8166 flow [2024-06-21 19:20:10,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:20:10,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:20:10,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 151 transitions. [2024-06-21 19:20:10,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44281524926686217 [2024-06-21 19:20:10,694 INFO L175 Difference]: Start difference. First operand has 555 places, 470 transitions, 6286 flow. Second operand 11 states and 151 transitions. [2024-06-21 19:20:10,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 565 places, 498 transitions, 8166 flow [2024-06-21 19:20:12,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 555 places, 498 transitions, 7892 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-21 19:20:12,559 INFO L231 Difference]: Finished difference. Result has 557 places, 470 transitions, 6320 flow [2024-06-21 19:20:12,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6012, PETRI_DIFFERENCE_MINUEND_PLACES=545, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=470, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6320, PETRI_PLACES=557, PETRI_TRANSITIONS=470} [2024-06-21 19:20:12,559 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 527 predicate places. [2024-06-21 19:20:12,559 INFO L495 AbstractCegarLoop]: Abstraction has has 557 places, 470 transitions, 6320 flow [2024-06-21 19:20:12,559 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 19:20:12,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:20:12,559 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 19:20:12,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-21 19:20:12,560 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 19:20:12,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:20:12,560 INFO L85 PathProgramCache]: Analyzing trace with hash -193316097, now seen corresponding path program 26 times [2024-06-21 19:20:12,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:20:12,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7142696] [2024-06-21 19:20:12,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:20:12,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:20:12,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:20:14,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:20:14,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:20:14,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7142696] [2024-06-21 19:20:14,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7142696] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:20:14,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:20:14,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:20:14,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686207733] [2024-06-21 19:20:14,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:20:14,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:20:14,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:20:14,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:20:14,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:20:14,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:20:14,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 557 places, 470 transitions, 6320 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 19:20:14,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:20:14,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:20:14,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:20:15,400 INFO L124 PetriNetUnfolderBase]: 1121/2102 cut-off events. [2024-06-21 19:20:15,400 INFO L125 PetriNetUnfolderBase]: For 365394/365394 co-relation queries the response was YES. [2024-06-21 19:20:15,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16579 conditions, 2102 events. 1121/2102 cut-off events. For 365394/365394 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 13238 event pairs, 190 based on Foata normal form. 2/2104 useless extension candidates. Maximal degree in co-relation 16383. Up to 1586 conditions per place. [2024-06-21 19:20:15,431 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 309 selfloop transitions, 171 changer transitions 0/482 dead transitions. [2024-06-21 19:20:15,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 564 places, 482 transitions, 7325 flow [2024-06-21 19:20:15,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:20:15,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:20:15,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-21 19:20:15,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3841642228739003 [2024-06-21 19:20:15,432 INFO L175 Difference]: Start difference. First operand has 557 places, 470 transitions, 6320 flow. Second operand 11 states and 131 transitions. [2024-06-21 19:20:15,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 564 places, 482 transitions, 7325 flow [2024-06-21 19:20:17,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 557 places, 482 transitions, 7144 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-21 19:20:17,289 INFO L231 Difference]: Finished difference. Result has 558 places, 471 transitions, 6508 flow [2024-06-21 19:20:17,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6139, PETRI_DIFFERENCE_MINUEND_PLACES=547, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=470, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6508, PETRI_PLACES=558, PETRI_TRANSITIONS=471} [2024-06-21 19:20:17,289 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 528 predicate places. [2024-06-21 19:20:17,289 INFO L495 AbstractCegarLoop]: Abstraction has has 558 places, 471 transitions, 6508 flow [2024-06-21 19:20:17,289 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 19:20:17,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:20:17,290 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 19:20:17,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-21 19:20:17,290 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 19:20:17,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:20:17,290 INFO L85 PathProgramCache]: Analyzing trace with hash -185697041, now seen corresponding path program 3 times [2024-06-21 19:20:17,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:20:17,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84615209] [2024-06-21 19:20:17,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:20:17,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:20:17,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:20:19,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:20:19,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:20:19,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84615209] [2024-06-21 19:20:19,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84615209] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:20:19,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:20:19,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:20:19,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835118245] [2024-06-21 19:20:19,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:20:19,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:20:19,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:20:19,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:20:19,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:20:19,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-21 19:20:19,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 558 places, 471 transitions, 6508 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 19:20:19,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:20:19,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-21 19:20:19,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:20:19,857 INFO L124 PetriNetUnfolderBase]: 1137/2138 cut-off events. [2024-06-21 19:20:19,857 INFO L125 PetriNetUnfolderBase]: For 433315/433315 co-relation queries the response was YES. [2024-06-21 19:20:19,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16990 conditions, 2138 events. 1137/2138 cut-off events. For 433315/433315 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 13527 event pairs, 191 based on Foata normal form. 10/2148 useless extension candidates. Maximal degree in co-relation 16795. Up to 1564 conditions per place. [2024-06-21 19:20:19,883 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 302 selfloop transitions, 172 changer transitions 11/488 dead transitions. [2024-06-21 19:20:19,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 568 places, 488 transitions, 7646 flow [2024-06-21 19:20:19,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:20:19,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:20:19,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 151 transitions. [2024-06-21 19:20:19,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44281524926686217 [2024-06-21 19:20:19,884 INFO L175 Difference]: Start difference. First operand has 558 places, 471 transitions, 6508 flow. Second operand 11 states and 151 transitions. [2024-06-21 19:20:19,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 568 places, 488 transitions, 7646 flow [2024-06-21 19:20:21,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 559 places, 488 transitions, 7288 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-21 19:20:21,908 INFO L231 Difference]: Finished difference. Result has 560 places, 468 transitions, 6477 flow [2024-06-21 19:20:21,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6150, PETRI_DIFFERENCE_MINUEND_PLACES=549, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=172, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6477, PETRI_PLACES=560, PETRI_TRANSITIONS=468} [2024-06-21 19:20:21,909 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 530 predicate places. [2024-06-21 19:20:21,909 INFO L495 AbstractCegarLoop]: Abstraction has has 560 places, 468 transitions, 6477 flow [2024-06-21 19:20:21,909 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 19:20:21,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:20:21,909 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 19:20:21,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-21 19:20:21,910 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 19:20:21,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:20:21,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1326170735, now seen corresponding path program 27 times [2024-06-21 19:20:21,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:20:21,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907157803] [2024-06-21 19:20:21,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:20:21,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:20:21,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:20:24,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:20:24,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:20:24,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907157803] [2024-06-21 19:20:24,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907157803] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:20:24,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:20:24,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:20:24,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133534871] [2024-06-21 19:20:24,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:20:24,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:20:24,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:20:24,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:20:24,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:20:24,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:20:24,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 560 places, 468 transitions, 6477 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 19:20:24,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:20:24,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:20:24,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:20:25,122 INFO L124 PetriNetUnfolderBase]: 1154/2177 cut-off events. [2024-06-21 19:20:25,122 INFO L125 PetriNetUnfolderBase]: For 512039/512039 co-relation queries the response was YES. [2024-06-21 19:20:25,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18649 conditions, 2177 events. 1154/2177 cut-off events. For 512039/512039 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 13796 event pairs, 203 based on Foata normal form. 8/2185 useless extension candidates. Maximal degree in co-relation 18453. Up to 1508 conditions per place. [2024-06-21 19:20:25,156 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 345 selfloop transitions, 138 changer transitions 10/495 dead transitions. [2024-06-21 19:20:25,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 567 places, 495 transitions, 8361 flow [2024-06-21 19:20:25,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:20:25,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:20:25,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 148 transitions. [2024-06-21 19:20:25,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4340175953079179 [2024-06-21 19:20:25,157 INFO L175 Difference]: Start difference. First operand has 560 places, 468 transitions, 6477 flow. Second operand 11 states and 148 transitions. [2024-06-21 19:20:25,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 567 places, 495 transitions, 8361 flow [2024-06-21 19:20:27,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 557 places, 495 transitions, 7987 flow, removed 15 selfloop flow, removed 10 redundant places. [2024-06-21 19:20:27,671 INFO L231 Difference]: Finished difference. Result has 559 places, 467 transitions, 6489 flow [2024-06-21 19:20:27,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6121, PETRI_DIFFERENCE_MINUEND_PLACES=547, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=468, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6489, PETRI_PLACES=559, PETRI_TRANSITIONS=467} [2024-06-21 19:20:27,672 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 529 predicate places. [2024-06-21 19:20:27,672 INFO L495 AbstractCegarLoop]: Abstraction has has 559 places, 467 transitions, 6489 flow [2024-06-21 19:20:27,672 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 19:20:27,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:20:27,672 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 19:20:27,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-21 19:20:27,672 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 19:20:27,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:20:27,673 INFO L85 PathProgramCache]: Analyzing trace with hash 162050460, now seen corresponding path program 3 times [2024-06-21 19:20:27,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:20:27,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909221019] [2024-06-21 19:20:27,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:20:27,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:20:27,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:20:29,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:20:29,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:20:29,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909221019] [2024-06-21 19:20:29,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909221019] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:20:29,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:20:29,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:20:29,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811420348] [2024-06-21 19:20:29,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:20:29,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:20:29,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:20:29,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:20:29,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:20:29,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:20:29,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 559 places, 467 transitions, 6489 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 19:20:29,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:20:29,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:20:29,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:20:30,270 INFO L124 PetriNetUnfolderBase]: 1130/2128 cut-off events. [2024-06-21 19:20:30,270 INFO L125 PetriNetUnfolderBase]: For 438556/438556 co-relation queries the response was YES. [2024-06-21 19:20:30,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18208 conditions, 2128 events. 1130/2128 cut-off events. For 438556/438556 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 13421 event pairs, 205 based on Foata normal form. 1/2129 useless extension candidates. Maximal degree in co-relation 18012. Up to 1589 conditions per place. [2024-06-21 19:20:30,301 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 331 selfloop transitions, 143 changer transitions 0/476 dead transitions. [2024-06-21 19:20:30,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 565 places, 476 transitions, 7457 flow [2024-06-21 19:20:30,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:20:30,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:20:30,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-21 19:20:30,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4096774193548387 [2024-06-21 19:20:30,302 INFO L175 Difference]: Start difference. First operand has 559 places, 467 transitions, 6489 flow. Second operand 10 states and 127 transitions. [2024-06-21 19:20:30,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 565 places, 476 transitions, 7457 flow [2024-06-21 19:20:32,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 557 places, 476 transitions, 7218 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-21 19:20:32,570 INFO L231 Difference]: Finished difference. Result has 558 places, 467 transitions, 6558 flow [2024-06-21 19:20:32,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6250, PETRI_DIFFERENCE_MINUEND_PLACES=548, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=467, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6558, PETRI_PLACES=558, PETRI_TRANSITIONS=467} [2024-06-21 19:20:32,571 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 528 predicate places. [2024-06-21 19:20:32,571 INFO L495 AbstractCegarLoop]: Abstraction has has 558 places, 467 transitions, 6558 flow [2024-06-21 19:20:32,571 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 19:20:32,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:20:32,571 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 19:20:32,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-21 19:20:32,571 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 19:20:32,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:20:32,571 INFO L85 PathProgramCache]: Analyzing trace with hash 156480473, now seen corresponding path program 28 times [2024-06-21 19:20:32,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:20:32,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527323496] [2024-06-21 19:20:32,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:20:32,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:20:32,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:20:34,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:20:34,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:20:34,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527323496] [2024-06-21 19:20:34,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527323496] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:20:34,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:20:34,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:20:34,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492428656] [2024-06-21 19:20:34,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:20:34,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:20:34,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:20:34,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:20:34,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:20:34,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:20:34,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 558 places, 467 transitions, 6558 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 19:20:34,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:20:34,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:20:34,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:20:35,415 INFO L124 PetriNetUnfolderBase]: 1141/2149 cut-off events. [2024-06-21 19:20:35,415 INFO L125 PetriNetUnfolderBase]: For 454882/454882 co-relation queries the response was YES. [2024-06-21 19:20:35,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18665 conditions, 2149 events. 1141/2149 cut-off events. For 454882/454882 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 13581 event pairs, 209 based on Foata normal form. 2/2151 useless extension candidates. Maximal degree in co-relation 18470. Up to 1616 conditions per place. [2024-06-21 19:20:35,446 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 353 selfloop transitions, 128 changer transitions 0/483 dead transitions. [2024-06-21 19:20:35,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 568 places, 483 transitions, 7885 flow [2024-06-21 19:20:35,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:20:35,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:20:35,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-21 19:20:35,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40762463343108507 [2024-06-21 19:20:35,447 INFO L175 Difference]: Start difference. First operand has 558 places, 467 transitions, 6558 flow. Second operand 11 states and 139 transitions. [2024-06-21 19:20:35,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 568 places, 483 transitions, 7885 flow [2024-06-21 19:20:37,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 560 places, 483 transitions, 7611 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-21 19:20:37,921 INFO L231 Difference]: Finished difference. Result has 561 places, 469 transitions, 6592 flow [2024-06-21 19:20:37,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6284, PETRI_DIFFERENCE_MINUEND_PLACES=550, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=467, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6592, PETRI_PLACES=561, PETRI_TRANSITIONS=469} [2024-06-21 19:20:37,921 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 531 predicate places. [2024-06-21 19:20:37,921 INFO L495 AbstractCegarLoop]: Abstraction has has 561 places, 469 transitions, 6592 flow [2024-06-21 19:20:37,921 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 19:20:37,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:20:37,921 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 19:20:37,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-21 19:20:37,922 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 19:20:37,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:20:37,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1946302313, now seen corresponding path program 29 times [2024-06-21 19:20:37,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:20:37,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148679585] [2024-06-21 19:20:37,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:20:37,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:20:37,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:20:39,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:20:39,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:20:39,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148679585] [2024-06-21 19:20:39,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148679585] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:20:39,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:20:39,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:20:39,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931808127] [2024-06-21 19:20:39,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:20:39,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:20:39,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:20:39,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:20:39,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:20:39,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:20:39,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 561 places, 469 transitions, 6592 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 19:20:39,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:20:39,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:20:39,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:20:40,743 INFO L124 PetriNetUnfolderBase]: 1145/2157 cut-off events. [2024-06-21 19:20:40,743 INFO L125 PetriNetUnfolderBase]: For 465537/465537 co-relation queries the response was YES. [2024-06-21 19:20:40,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18773 conditions, 2157 events. 1145/2157 cut-off events. For 465537/465537 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 13638 event pairs, 204 based on Foata normal form. 2/2159 useless extension candidates. Maximal degree in co-relation 18577. Up to 1804 conditions per place. [2024-06-21 19:20:40,779 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 349 selfloop transitions, 134 changer transitions 0/485 dead transitions. [2024-06-21 19:20:40,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 574 places, 485 transitions, 7624 flow [2024-06-21 19:20:40,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-21 19:20:40,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-21 19:20:40,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 158 transitions. [2024-06-21 19:20:40,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3640552995391705 [2024-06-21 19:20:40,780 INFO L175 Difference]: Start difference. First operand has 561 places, 469 transitions, 6592 flow. Second operand 14 states and 158 transitions. [2024-06-21 19:20:40,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 574 places, 485 transitions, 7624 flow [2024-06-21 19:20:43,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 567 places, 485 transitions, 7454 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-21 19:20:43,119 INFO L231 Difference]: Finished difference. Result has 568 places, 471 transitions, 6732 flow [2024-06-21 19:20:43,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6422, PETRI_DIFFERENCE_MINUEND_PLACES=554, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=469, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=6732, PETRI_PLACES=568, PETRI_TRANSITIONS=471} [2024-06-21 19:20:43,120 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 538 predicate places. [2024-06-21 19:20:43,120 INFO L495 AbstractCegarLoop]: Abstraction has has 568 places, 471 transitions, 6732 flow [2024-06-21 19:20:43,120 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 19:20:43,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:20:43,120 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 19:20:43,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-21 19:20:43,120 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 19:20:43,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:20:43,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1933646803, now seen corresponding path program 30 times [2024-06-21 19:20:43,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:20:43,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622538061] [2024-06-21 19:20:43,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:20:43,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:20:43,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:20:45,244 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 19:20:45,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:20:45,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622538061] [2024-06-21 19:20:45,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622538061] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:20:45,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:20:45,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:20:45,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438986061] [2024-06-21 19:20:45,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:20:45,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:20:45,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:20:45,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:20:45,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:20:45,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:20:45,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 568 places, 471 transitions, 6732 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 19:20:45,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:20:45,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:20:45,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:20:46,084 INFO L124 PetriNetUnfolderBase]: 1142/2152 cut-off events. [2024-06-21 19:20:46,084 INFO L125 PetriNetUnfolderBase]: For 450711/450711 co-relation queries the response was YES. [2024-06-21 19:20:46,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18704 conditions, 2152 events. 1142/2152 cut-off events. For 450711/450711 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 13587 event pairs, 206 based on Foata normal form. 2/2154 useless extension candidates. Maximal degree in co-relation 18506. Up to 1636 conditions per place. [2024-06-21 19:20:46,113 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 353 selfloop transitions, 128 changer transitions 0/483 dead transitions. [2024-06-21 19:20:46,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 578 places, 483 transitions, 7731 flow [2024-06-21 19:20:46,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:20:46,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:20:46,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-21 19:20:46,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40175953079178883 [2024-06-21 19:20:46,114 INFO L175 Difference]: Start difference. First operand has 568 places, 471 transitions, 6732 flow. Second operand 11 states and 137 transitions. [2024-06-21 19:20:46,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 578 places, 483 transitions, 7731 flow [2024-06-21 19:20:48,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 568 places, 483 transitions, 7432 flow, removed 26 selfloop flow, removed 10 redundant places. [2024-06-21 19:20:48,399 INFO L231 Difference]: Finished difference. Result has 569 places, 471 transitions, 6695 flow [2024-06-21 19:20:48,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6435, PETRI_DIFFERENCE_MINUEND_PLACES=558, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6695, PETRI_PLACES=569, PETRI_TRANSITIONS=471} [2024-06-21 19:20:48,399 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 539 predicate places. [2024-06-21 19:20:48,399 INFO L495 AbstractCegarLoop]: Abstraction has has 569 places, 471 transitions, 6695 flow [2024-06-21 19:20:48,399 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 19:20:48,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:20:48,400 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 19:20:48,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-21 19:20:48,400 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 19:20:48,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:20:48,400 INFO L85 PathProgramCache]: Analyzing trace with hash 2127586213, now seen corresponding path program 31 times [2024-06-21 19:20:48,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:20:48,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298990328] [2024-06-21 19:20:48,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:20:48,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:20:48,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:20:50,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:20:50,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:20:50,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298990328] [2024-06-21 19:20:50,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298990328] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:20:50,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:20:50,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:20:50,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734142235] [2024-06-21 19:20:50,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:20:50,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:20:50,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:20:50,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:20:50,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:20:50,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:20:50,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 569 places, 471 transitions, 6695 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 19:20:50,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:20:50,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:20:50,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:20:51,218 INFO L124 PetriNetUnfolderBase]: 1146/2160 cut-off events. [2024-06-21 19:20:51,219 INFO L125 PetriNetUnfolderBase]: For 457068/457068 co-relation queries the response was YES. [2024-06-21 19:20:51,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18730 conditions, 2160 events. 1146/2160 cut-off events. For 457068/457068 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 13663 event pairs, 209 based on Foata normal form. 2/2162 useless extension candidates. Maximal degree in co-relation 18531. Up to 1644 conditions per place. [2024-06-21 19:20:51,254 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 352 selfloop transitions, 130 changer transitions 0/484 dead transitions. [2024-06-21 19:20:51,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 579 places, 484 transitions, 7721 flow [2024-06-21 19:20:51,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:20:51,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:20:51,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-21 19:20:51,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2024-06-21 19:20:51,255 INFO L175 Difference]: Start difference. First operand has 569 places, 471 transitions, 6695 flow. Second operand 11 states and 136 transitions. [2024-06-21 19:20:51,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 579 places, 484 transitions, 7721 flow [2024-06-21 19:20:53,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 569 places, 484 transitions, 7463 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-21 19:20:53,571 INFO L231 Difference]: Finished difference. Result has 570 places, 472 transitions, 6730 flow [2024-06-21 19:20:53,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6437, PETRI_DIFFERENCE_MINUEND_PLACES=559, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6730, PETRI_PLACES=570, PETRI_TRANSITIONS=472} [2024-06-21 19:20:53,572 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 540 predicate places. [2024-06-21 19:20:53,572 INFO L495 AbstractCegarLoop]: Abstraction has has 570 places, 472 transitions, 6730 flow [2024-06-21 19:20:53,572 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 19:20:53,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:20:53,572 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 19:20:53,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-21 19:20:53,572 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 19:20:53,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:20:53,572 INFO L85 PathProgramCache]: Analyzing trace with hash 434294107, now seen corresponding path program 4 times [2024-06-21 19:20:53,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:20:53,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491826355] [2024-06-21 19:20:53,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:20:53,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:20:53,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:20:55,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:20:55,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:20:55,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491826355] [2024-06-21 19:20:55,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491826355] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:20:55,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:20:55,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:20:55,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194815379] [2024-06-21 19:20:55,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:20:55,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:20:55,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:20:55,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:20:55,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:20:55,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:20:55,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 570 places, 472 transitions, 6730 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 19:20:55,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:20:55,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:20:55,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:20:56,409 INFO L124 PetriNetUnfolderBase]: 1172/2214 cut-off events. [2024-06-21 19:20:56,409 INFO L125 PetriNetUnfolderBase]: For 541401/541401 co-relation queries the response was YES. [2024-06-21 19:20:56,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20320 conditions, 2214 events. 1172/2214 cut-off events. For 541401/541401 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 14036 event pairs, 226 based on Foata normal form. 2/2216 useless extension candidates. Maximal degree in co-relation 20120. Up to 1816 conditions per place. [2024-06-21 19:20:56,439 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 356 selfloop transitions, 132 changer transitions 0/490 dead transitions. [2024-06-21 19:20:56,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 580 places, 490 transitions, 8132 flow [2024-06-21 19:20:56,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:20:56,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:20:56,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-21 19:20:56,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40762463343108507 [2024-06-21 19:20:56,440 INFO L175 Difference]: Start difference. First operand has 570 places, 472 transitions, 6730 flow. Second operand 11 states and 139 transitions. [2024-06-21 19:20:56,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 580 places, 490 transitions, 8132 flow [2024-06-21 19:20:59,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 571 places, 490 transitions, 7850 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-21 19:20:59,164 INFO L231 Difference]: Finished difference. Result has 572 places, 473 transitions, 6752 flow [2024-06-21 19:20:59,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6448, PETRI_DIFFERENCE_MINUEND_PLACES=561, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=472, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6752, PETRI_PLACES=572, PETRI_TRANSITIONS=473} [2024-06-21 19:20:59,165 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 542 predicate places. [2024-06-21 19:20:59,165 INFO L495 AbstractCegarLoop]: Abstraction has has 572 places, 473 transitions, 6752 flow [2024-06-21 19:20:59,165 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 19:20:59,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:20:59,165 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 19:20:59,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-21 19:20:59,165 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 19:20:59,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:20:59,165 INFO L85 PathProgramCache]: Analyzing trace with hash -783654853, now seen corresponding path program 32 times [2024-06-21 19:20:59,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:20:59,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526938582] [2024-06-21 19:20:59,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:20:59,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:20:59,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:21:01,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:21:01,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:21:01,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526938582] [2024-06-21 19:21:01,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526938582] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:21:01,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:21:01,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:21:01,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298575542] [2024-06-21 19:21:01,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:21:01,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:21:01,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:21:01,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:21:01,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:21:01,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:21:01,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 572 places, 473 transitions, 6752 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 19:21:01,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:21:01,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:21:01,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:21:02,054 INFO L124 PetriNetUnfolderBase]: 1176/2222 cut-off events. [2024-06-21 19:21:02,055 INFO L125 PetriNetUnfolderBase]: For 553211/553211 co-relation queries the response was YES. [2024-06-21 19:21:02,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20435 conditions, 2222 events. 1176/2222 cut-off events. For 553211/553211 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 14150 event pairs, 218 based on Foata normal form. 2/2224 useless extension candidates. Maximal degree in co-relation 20234. Up to 1692 conditions per place. [2024-06-21 19:21:02,089 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 337 selfloop transitions, 147 changer transitions 0/486 dead transitions. [2024-06-21 19:21:02,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 582 places, 486 transitions, 7775 flow [2024-06-21 19:21:02,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:21:02,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:21:02,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-21 19:21:02,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39002932551319647 [2024-06-21 19:21:02,091 INFO L175 Difference]: Start difference. First operand has 572 places, 473 transitions, 6752 flow. Second operand 11 states and 133 transitions. [2024-06-21 19:21:02,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 582 places, 486 transitions, 7775 flow [2024-06-21 19:21:04,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 573 places, 486 transitions, 7481 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-21 19:21:04,938 INFO L231 Difference]: Finished difference. Result has 574 places, 474 transitions, 6787 flow [2024-06-21 19:21:04,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6458, PETRI_DIFFERENCE_MINUEND_PLACES=563, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=473, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6787, PETRI_PLACES=574, PETRI_TRANSITIONS=474} [2024-06-21 19:21:04,939 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 544 predicate places. [2024-06-21 19:21:04,939 INFO L495 AbstractCegarLoop]: Abstraction has has 574 places, 474 transitions, 6787 flow [2024-06-21 19:21:04,939 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 19:21:04,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:21:04,939 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 19:21:04,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-21 19:21:04,939 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 19:21:04,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:21:04,939 INFO L85 PathProgramCache]: Analyzing trace with hash 453419241, now seen corresponding path program 33 times [2024-06-21 19:21:04,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:21:04,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36643962] [2024-06-21 19:21:04,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:21:04,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:21:04,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:21:06,807 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 19:21:06,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:21:06,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36643962] [2024-06-21 19:21:06,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36643962] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:21:06,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:21:06,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:21:06,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419439625] [2024-06-21 19:21:06,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:21:06,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:21:06,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:21:06,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:21:06,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:21:06,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:21:06,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 574 places, 474 transitions, 6787 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 19:21:06,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:21:06,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:21:06,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:21:07,681 INFO L124 PetriNetUnfolderBase]: 1158/2184 cut-off events. [2024-06-21 19:21:07,681 INFO L125 PetriNetUnfolderBase]: For 478271/478271 co-relation queries the response was YES. [2024-06-21 19:21:07,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19078 conditions, 2184 events. 1158/2184 cut-off events. For 478271/478271 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 13853 event pairs, 211 based on Foata normal form. 2/2186 useless extension candidates. Maximal degree in co-relation 18876. Up to 1645 conditions per place. [2024-06-21 19:21:07,716 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 357 selfloop transitions, 131 changer transitions 0/490 dead transitions. [2024-06-21 19:21:07,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 584 places, 490 transitions, 8156 flow [2024-06-21 19:21:07,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:21:07,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:21:07,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-21 19:21:07,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40175953079178883 [2024-06-21 19:21:07,717 INFO L175 Difference]: Start difference. First operand has 574 places, 474 transitions, 6787 flow. Second operand 11 states and 137 transitions. [2024-06-21 19:21:07,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 584 places, 490 transitions, 8156 flow [2024-06-21 19:21:10,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 575 places, 490 transitions, 7838 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-21 19:21:10,279 INFO L231 Difference]: Finished difference. Result has 576 places, 476 transitions, 6799 flow [2024-06-21 19:21:10,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6469, PETRI_DIFFERENCE_MINUEND_PLACES=565, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6799, PETRI_PLACES=576, PETRI_TRANSITIONS=476} [2024-06-21 19:21:10,280 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 546 predicate places. [2024-06-21 19:21:10,280 INFO L495 AbstractCegarLoop]: Abstraction has has 576 places, 476 transitions, 6799 flow [2024-06-21 19:21:10,280 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 19:21:10,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:21:10,280 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 19:21:10,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-21 19:21:10,281 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 19:21:10,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:21:10,282 INFO L85 PathProgramCache]: Analyzing trace with hash 461053177, now seen corresponding path program 5 times [2024-06-21 19:21:10,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:21:10,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17043975] [2024-06-21 19:21:10,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:21:10,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:21:10,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:21:12,244 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 19:21:12,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:21:12,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17043975] [2024-06-21 19:21:12,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17043975] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:21:12,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:21:12,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:21:12,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407568189] [2024-06-21 19:21:12,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:21:12,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:21:12,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:21:12,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:21:12,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:21:12,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:21:12,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 576 places, 476 transitions, 6799 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 19:21:12,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:21:12,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:21:12,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:21:13,134 INFO L124 PetriNetUnfolderBase]: 1184/2238 cut-off events. [2024-06-21 19:21:13,135 INFO L125 PetriNetUnfolderBase]: For 570679/570679 co-relation queries the response was YES. [2024-06-21 19:21:13,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20612 conditions, 2238 events. 1184/2238 cut-off events. For 570679/570679 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 14251 event pairs, 218 based on Foata normal form. 2/2240 useless extension candidates. Maximal degree in co-relation 20409. Up to 1801 conditions per place. [2024-06-21 19:21:13,166 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 381 selfloop transitions, 113 changer transitions 0/496 dead transitions. [2024-06-21 19:21:13,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 586 places, 496 transitions, 8293 flow [2024-06-21 19:21:13,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:21:13,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:21:13,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-21 19:21:13,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41055718475073316 [2024-06-21 19:21:13,167 INFO L175 Difference]: Start difference. First operand has 576 places, 476 transitions, 6799 flow. Second operand 11 states and 140 transitions. [2024-06-21 19:21:13,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 586 places, 496 transitions, 8293 flow [2024-06-21 19:21:15,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 579 places, 496 transitions, 8109 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-21 19:21:15,852 INFO L231 Difference]: Finished difference. Result has 580 places, 477 transitions, 6883 flow [2024-06-21 19:21:15,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6615, PETRI_DIFFERENCE_MINUEND_PLACES=569, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6883, PETRI_PLACES=580, PETRI_TRANSITIONS=477} [2024-06-21 19:21:15,852 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 550 predicate places. [2024-06-21 19:21:15,853 INFO L495 AbstractCegarLoop]: Abstraction has has 580 places, 477 transitions, 6883 flow [2024-06-21 19:21:15,853 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 19:21:15,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:21:15,853 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 19:21:15,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-21 19:21:15,853 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 19:21:15,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:21:15,853 INFO L85 PathProgramCache]: Analyzing trace with hash 2134736053, now seen corresponding path program 34 times [2024-06-21 19:21:15,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:21:15,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130723457] [2024-06-21 19:21:15,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:21:15,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:21:15,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:21:17,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:21:17,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:21:17,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130723457] [2024-06-21 19:21:17,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130723457] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:21:17,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:21:17,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:21:17,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20957492] [2024-06-21 19:21:17,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:21:17,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:21:17,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:21:17,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:21:17,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:21:17,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:21:17,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 580 places, 477 transitions, 6883 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 19:21:17,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:21:17,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:21:17,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:21:18,240 INFO L124 PetriNetUnfolderBase]: 1181/2233 cut-off events. [2024-06-21 19:21:18,241 INFO L125 PetriNetUnfolderBase]: For 554851/554851 co-relation queries the response was YES. [2024-06-21 19:21:18,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20484 conditions, 2233 events. 1181/2233 cut-off events. For 554851/554851 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 14237 event pairs, 219 based on Foata normal form. 2/2235 useless extension candidates. Maximal degree in co-relation 20279. Up to 1717 conditions per place. [2024-06-21 19:21:18,275 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 352 selfloop transitions, 134 changer transitions 0/488 dead transitions. [2024-06-21 19:21:18,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 590 places, 488 transitions, 7879 flow [2024-06-21 19:21:18,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:21:18,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:21:18,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-21 19:21:18,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39589442815249265 [2024-06-21 19:21:18,276 INFO L175 Difference]: Start difference. First operand has 580 places, 477 transitions, 6883 flow. Second operand 11 states and 135 transitions. [2024-06-21 19:21:18,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 590 places, 488 transitions, 7879 flow [2024-06-21 19:21:21,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 581 places, 488 transitions, 7599 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-21 19:21:21,090 INFO L231 Difference]: Finished difference. Result has 582 places, 477 transitions, 6875 flow [2024-06-21 19:21:21,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6603, PETRI_DIFFERENCE_MINUEND_PLACES=571, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=477, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6875, PETRI_PLACES=582, PETRI_TRANSITIONS=477} [2024-06-21 19:21:21,091 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 552 predicate places. [2024-06-21 19:21:21,091 INFO L495 AbstractCegarLoop]: Abstraction has has 582 places, 477 transitions, 6875 flow [2024-06-21 19:21:21,091 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 19:21:21,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:21:21,092 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 19:21:21,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-21 19:21:21,092 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 19:21:21,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:21:21,092 INFO L85 PathProgramCache]: Analyzing trace with hash 363406899, now seen corresponding path program 6 times [2024-06-21 19:21:21,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:21:21,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453126959] [2024-06-21 19:21:21,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:21:21,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:21:21,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:21:22,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:21:22,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:21:22,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453126959] [2024-06-21 19:21:22,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453126959] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:21:22,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:21:22,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:21:22,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753900083] [2024-06-21 19:21:22,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:21:22,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:21:22,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:21:22,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:21:22,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:21:23,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:21:23,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 582 places, 477 transitions, 6875 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 19:21:23,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:21:23,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:21:23,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:21:23,718 INFO L124 PetriNetUnfolderBase]: 1156/2182 cut-off events. [2024-06-21 19:21:23,719 INFO L125 PetriNetUnfolderBase]: For 455641/455641 co-relation queries the response was YES. [2024-06-21 19:21:23,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18631 conditions, 2182 events. 1156/2182 cut-off events. For 455641/455641 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 13874 event pairs, 207 based on Foata normal form. 2/2184 useless extension candidates. Maximal degree in co-relation 18425. Up to 1842 conditions per place. [2024-06-21 19:21:23,756 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 375 selfloop transitions, 115 changer transitions 0/492 dead transitions. [2024-06-21 19:21:23,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 592 places, 492 transitions, 7964 flow [2024-06-21 19:21:23,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:21:23,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:21:23,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-21 19:21:23,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39589442815249265 [2024-06-21 19:21:23,757 INFO L175 Difference]: Start difference. First operand has 582 places, 477 transitions, 6875 flow. Second operand 11 states and 135 transitions. [2024-06-21 19:21:23,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 592 places, 492 transitions, 7964 flow [2024-06-21 19:21:26,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 582 places, 492 transitions, 7690 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-21 19:21:26,117 INFO L231 Difference]: Finished difference. Result has 583 places, 480 transitions, 6920 flow [2024-06-21 19:21:26,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6601, PETRI_DIFFERENCE_MINUEND_PLACES=572, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=477, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6920, PETRI_PLACES=583, PETRI_TRANSITIONS=480} [2024-06-21 19:21:26,117 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 553 predicate places. [2024-06-21 19:21:26,117 INFO L495 AbstractCegarLoop]: Abstraction has has 583 places, 480 transitions, 6920 flow [2024-06-21 19:21:26,117 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 19:21:26,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:21:26,118 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 19:21:26,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-21 19:21:26,118 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 19:21:26,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:21:26,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1416512331, now seen corresponding path program 35 times [2024-06-21 19:21:26,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:21:26,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713655289] [2024-06-21 19:21:26,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:21:26,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:21:26,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:21:27,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:21:27,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:21:27,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713655289] [2024-06-21 19:21:27,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713655289] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:21:27,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:21:27,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:21:27,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290291318] [2024-06-21 19:21:27,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:21:27,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:21:27,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:21:27,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:21:27,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:21:27,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:21:27,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 583 places, 480 transitions, 6920 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 19:21:27,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:21:27,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:21:27,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:21:28,544 INFO L124 PetriNetUnfolderBase]: 1160/2190 cut-off events. [2024-06-21 19:21:28,544 INFO L125 PetriNetUnfolderBase]: For 460869/460869 co-relation queries the response was YES. [2024-06-21 19:21:28,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18728 conditions, 2190 events. 1160/2190 cut-off events. For 460869/460869 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 13971 event pairs, 206 based on Foata normal form. 2/2192 useless extension candidates. Maximal degree in co-relation 18521. Up to 1674 conditions per place. [2024-06-21 19:21:28,580 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 321 selfloop transitions, 169 changer transitions 0/492 dead transitions. [2024-06-21 19:21:28,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 593 places, 492 transitions, 7957 flow [2024-06-21 19:21:28,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:21:28,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:21:28,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-21 19:21:28,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39002932551319647 [2024-06-21 19:21:28,581 INFO L175 Difference]: Start difference. First operand has 583 places, 480 transitions, 6920 flow. Second operand 11 states and 133 transitions. [2024-06-21 19:21:28,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 593 places, 492 transitions, 7957 flow [2024-06-21 19:21:31,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 587 places, 492 transitions, 7759 flow, removed 36 selfloop flow, removed 6 redundant places. [2024-06-21 19:21:31,065 INFO L231 Difference]: Finished difference. Result has 588 places, 481 transitions, 7099 flow [2024-06-21 19:21:31,066 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6722, PETRI_DIFFERENCE_MINUEND_PLACES=577, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=480, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=168, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7099, PETRI_PLACES=588, PETRI_TRANSITIONS=481} [2024-06-21 19:21:31,066 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 558 predicate places. [2024-06-21 19:21:31,066 INFO L495 AbstractCegarLoop]: Abstraction has has 588 places, 481 transitions, 7099 flow [2024-06-21 19:21:31,066 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 19:21:31,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:21:31,066 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 19:21:31,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-21 19:21:31,066 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 19:21:31,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:21:31,067 INFO L85 PathProgramCache]: Analyzing trace with hash -783649056, now seen corresponding path program 4 times [2024-06-21 19:21:31,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:21:31,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196167850] [2024-06-21 19:21:31,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:21:31,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:21:31,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:21:33,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:21:33,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:21:33,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196167850] [2024-06-21 19:21:33,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196167850] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:21:33,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:21:33,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:21:33,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768113873] [2024-06-21 19:21:33,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:21:33,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:21:33,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:21:33,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:21:33,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:21:33,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:21:33,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 588 places, 481 transitions, 7099 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 19:21:33,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:21:33,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:21:33,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:21:34,304 INFO L124 PetriNetUnfolderBase]: 1169/2205 cut-off events. [2024-06-21 19:21:34,304 INFO L125 PetriNetUnfolderBase]: For 453154/453154 co-relation queries the response was YES. [2024-06-21 19:21:34,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19088 conditions, 2205 events. 1169/2205 cut-off events. For 453154/453154 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 14058 event pairs, 209 based on Foata normal form. 1/2206 useless extension candidates. Maximal degree in co-relation 18879. Up to 1630 conditions per place. [2024-06-21 19:21:34,337 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 331 selfloop transitions, 167 changer transitions 0/500 dead transitions. [2024-06-21 19:21:34,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 598 places, 500 transitions, 8561 flow [2024-06-21 19:21:34,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:21:34,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:21:34,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-21 19:21:34,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40762463343108507 [2024-06-21 19:21:34,338 INFO L175 Difference]: Start difference. First operand has 588 places, 481 transitions, 7099 flow. Second operand 11 states and 139 transitions. [2024-06-21 19:21:34,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 598 places, 500 transitions, 8561 flow [2024-06-21 19:21:36,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 589 places, 500 transitions, 8195 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-21 19:21:36,894 INFO L231 Difference]: Finished difference. Result has 590 places, 486 transitions, 7169 flow [2024-06-21 19:21:36,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6733, PETRI_DIFFERENCE_MINUEND_PLACES=579, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=481, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7169, PETRI_PLACES=590, PETRI_TRANSITIONS=486} [2024-06-21 19:21:36,895 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 560 predicate places. [2024-06-21 19:21:36,895 INFO L495 AbstractCegarLoop]: Abstraction has has 590 places, 486 transitions, 7169 flow [2024-06-21 19:21:36,895 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 19:21:36,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:21:36,895 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 19:21:36,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-21 19:21:36,895 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 19:21:36,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:21:36,895 INFO L85 PathProgramCache]: Analyzing trace with hash -576995616, now seen corresponding path program 5 times [2024-06-21 19:21:36,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:21:36,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256567651] [2024-06-21 19:21:36,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:21:36,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:21:36,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:21:39,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:21:39,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:21:39,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256567651] [2024-06-21 19:21:39,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256567651] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:21:39,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:21:39,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 19:21:39,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112399] [2024-06-21 19:21:39,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:21:39,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 19:21:39,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:21:39,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 19:21:39,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2024-06-21 19:21:39,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:21:39,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 590 places, 486 transitions, 7169 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:21:39,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:21:39,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:21:39,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:21:40,366 INFO L124 PetriNetUnfolderBase]: 1181/2225 cut-off events. [2024-06-21 19:21:40,366 INFO L125 PetriNetUnfolderBase]: For 463184/463184 co-relation queries the response was YES. [2024-06-21 19:21:40,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19329 conditions, 2225 events. 1181/2225 cut-off events. For 463184/463184 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 14223 event pairs, 205 based on Foata normal form. 1/2226 useless extension candidates. Maximal degree in co-relation 19119. Up to 1876 conditions per place. [2024-06-21 19:21:40,402 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 372 selfloop transitions, 132 changer transitions 0/506 dead transitions. [2024-06-21 19:21:40,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 601 places, 506 transitions, 8436 flow [2024-06-21 19:21:40,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:21:40,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:21:40,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-21 19:21:40,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3790322580645161 [2024-06-21 19:21:40,403 INFO L175 Difference]: Start difference. First operand has 590 places, 486 transitions, 7169 flow. Second operand 12 states and 141 transitions. [2024-06-21 19:21:40,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 601 places, 506 transitions, 8436 flow [2024-06-21 19:21:43,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 592 places, 506 transitions, 7965 flow, removed 54 selfloop flow, removed 9 redundant places. [2024-06-21 19:21:43,212 INFO L231 Difference]: Finished difference. Result has 594 places, 494 transitions, 7203 flow [2024-06-21 19:21:43,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6768, PETRI_DIFFERENCE_MINUEND_PLACES=581, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7203, PETRI_PLACES=594, PETRI_TRANSITIONS=494} [2024-06-21 19:21:43,212 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 564 predicate places. [2024-06-21 19:21:43,212 INFO L495 AbstractCegarLoop]: Abstraction has has 594 places, 494 transitions, 7203 flow [2024-06-21 19:21:43,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:21:43,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:21:43,212 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 19:21:43,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-21 19:21:43,213 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 19:21:43,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:21:43,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1194600727, now seen corresponding path program 36 times [2024-06-21 19:21:43,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:21:43,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579620256] [2024-06-21 19:21:43,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:21:43,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:21:43,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:21:44,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:21:44,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:21:44,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579620256] [2024-06-21 19:21:44,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579620256] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:21:44,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:21:44,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:21:44,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847952023] [2024-06-21 19:21:44,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:21:44,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:21:44,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:21:44,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:21:44,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:21:44,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:21:44,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 594 places, 494 transitions, 7203 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 19:21:44,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:21:44,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:21:44,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:21:45,613 INFO L124 PetriNetUnfolderBase]: 1185/2233 cut-off events. [2024-06-21 19:21:45,613 INFO L125 PetriNetUnfolderBase]: For 480078/480078 co-relation queries the response was YES. [2024-06-21 19:21:45,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19302 conditions, 2233 events. 1185/2233 cut-off events. For 480078/480078 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 14280 event pairs, 209 based on Foata normal form. 2/2235 useless extension candidates. Maximal degree in co-relation 19090. Up to 1715 conditions per place. [2024-06-21 19:21:45,650 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 354 selfloop transitions, 150 changer transitions 0/506 dead transitions. [2024-06-21 19:21:45,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 604 places, 506 transitions, 8270 flow [2024-06-21 19:21:45,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:21:45,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:21:45,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-21 19:21:45,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-21 19:21:45,652 INFO L175 Difference]: Start difference. First operand has 594 places, 494 transitions, 7203 flow. Second operand 11 states and 134 transitions. [2024-06-21 19:21:45,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 604 places, 506 transitions, 8270 flow [2024-06-21 19:21:48,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 595 places, 506 transitions, 7988 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-21 19:21:48,488 INFO L231 Difference]: Finished difference. Result has 596 places, 495 transitions, 7262 flow [2024-06-21 19:21:48,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6921, PETRI_DIFFERENCE_MINUEND_PLACES=585, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7262, PETRI_PLACES=596, PETRI_TRANSITIONS=495} [2024-06-21 19:21:48,488 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 566 predicate places. [2024-06-21 19:21:48,488 INFO L495 AbstractCegarLoop]: Abstraction has has 596 places, 495 transitions, 7262 flow [2024-06-21 19:21:48,488 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 19:21:48,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:21:48,489 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 19:21:48,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-21 19:21:48,489 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 19:21:48,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:21:48,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1194868133, now seen corresponding path program 7 times [2024-06-21 19:21:48,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:21:48,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308155128] [2024-06-21 19:21:48,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:21:48,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:21:48,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:21:50,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:21:50,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:21:50,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308155128] [2024-06-21 19:21:50,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308155128] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:21:50,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:21:50,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:21:50,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615750420] [2024-06-21 19:21:50,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:21:50,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:21:50,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:21:50,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:21:50,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:21:50,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:21:50,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 596 places, 495 transitions, 7262 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 19:21:50,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:21:50,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:21:50,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:21:51,228 INFO L124 PetriNetUnfolderBase]: 1189/2241 cut-off events. [2024-06-21 19:21:51,228 INFO L125 PetriNetUnfolderBase]: For 484555/484555 co-relation queries the response was YES. [2024-06-21 19:21:51,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19450 conditions, 2241 events. 1189/2241 cut-off events. For 484555/484555 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 14341 event pairs, 213 based on Foata normal form. 2/2243 useless extension candidates. Maximal degree in co-relation 19237. Up to 1903 conditions per place. [2024-06-21 19:21:51,261 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 384 selfloop transitions, 124 changer transitions 0/510 dead transitions. [2024-06-21 19:21:51,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 606 places, 510 transitions, 8393 flow [2024-06-21 19:21:51,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:21:51,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:21:51,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-21 19:21:51,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39589442815249265 [2024-06-21 19:21:51,262 INFO L175 Difference]: Start difference. First operand has 596 places, 495 transitions, 7262 flow. Second operand 11 states and 135 transitions. [2024-06-21 19:21:51,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 606 places, 510 transitions, 8393 flow [2024-06-21 19:21:53,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 597 places, 510 transitions, 8063 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-21 19:21:53,982 INFO L231 Difference]: Finished difference. Result has 598 places, 498 transitions, 7275 flow [2024-06-21 19:21:53,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6932, PETRI_DIFFERENCE_MINUEND_PLACES=587, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=495, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7275, PETRI_PLACES=598, PETRI_TRANSITIONS=498} [2024-06-21 19:21:53,983 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 568 predicate places. [2024-06-21 19:21:53,983 INFO L495 AbstractCegarLoop]: Abstraction has has 598 places, 498 transitions, 7275 flow [2024-06-21 19:21:53,984 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 19:21:53,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:21:53,984 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:21:53,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-21 19:21:53,984 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 19:21:53,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:21:53,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1525616675, now seen corresponding path program 37 times [2024-06-21 19:21:53,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:21:53,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447150159] [2024-06-21 19:21:53,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:21:53,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:21:54,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:21:55,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:21:55,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:21:55,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447150159] [2024-06-21 19:21:55,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447150159] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:21:55,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:21:55,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:21:55,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656648537] [2024-06-21 19:21:55,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:21:55,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:21:55,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:21:55,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:21:55,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:21:56,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:21:56,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 598 places, 498 transitions, 7275 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 19:21:56,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:21:56,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:21:56,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:21:56,863 INFO L124 PetriNetUnfolderBase]: 1200/2262 cut-off events. [2024-06-21 19:21:56,863 INFO L125 PetriNetUnfolderBase]: For 515115/515115 co-relation queries the response was YES. [2024-06-21 19:21:56,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19923 conditions, 2262 events. 1200/2262 cut-off events. For 515115/515115 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 14482 event pairs, 214 based on Foata normal form. 2/2264 useless extension candidates. Maximal degree in co-relation 19709. Up to 1910 conditions per place. [2024-06-21 19:21:56,901 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 389 selfloop transitions, 123 changer transitions 0/514 dead transitions. [2024-06-21 19:21:56,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 609 places, 514 transitions, 8713 flow [2024-06-21 19:21:56,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:21:56,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:21:56,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 143 transitions. [2024-06-21 19:21:56,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3844086021505376 [2024-06-21 19:21:56,905 INFO L175 Difference]: Start difference. First operand has 598 places, 498 transitions, 7275 flow. Second operand 12 states and 143 transitions. [2024-06-21 19:21:56,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 609 places, 514 transitions, 8713 flow [2024-06-21 19:21:59,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 603 places, 514 transitions, 8493 flow, removed 38 selfloop flow, removed 6 redundant places. [2024-06-21 19:21:59,967 INFO L231 Difference]: Finished difference. Result has 604 places, 500 transitions, 7381 flow [2024-06-21 19:21:59,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=7055, PETRI_DIFFERENCE_MINUEND_PLACES=592, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7381, PETRI_PLACES=604, PETRI_TRANSITIONS=500} [2024-06-21 19:21:59,967 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 574 predicate places. [2024-06-21 19:21:59,967 INFO L495 AbstractCegarLoop]: Abstraction has has 604 places, 500 transitions, 7381 flow [2024-06-21 19:21:59,967 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 19:21:59,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:21:59,968 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 19:21:59,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2024-06-21 19:21:59,968 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 19:21:59,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:21:59,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1525622255, now seen corresponding path program 38 times [2024-06-21 19:21:59,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:21:59,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504758034] [2024-06-21 19:21:59,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:21:59,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:21:59,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:22:01,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:22:01,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:22:01,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504758034] [2024-06-21 19:22:01,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504758034] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:22:01,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:22:01,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:22:01,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206264887] [2024-06-21 19:22:01,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:22:01,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:22:01,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:22:01,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:22:01,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:22:02,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:22:02,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 604 places, 500 transitions, 7381 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 19:22:02,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:22:02,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:22:02,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:22:02,927 INFO L124 PetriNetUnfolderBase]: 1197/2257 cut-off events. [2024-06-21 19:22:02,927 INFO L125 PetriNetUnfolderBase]: For 496345/496345 co-relation queries the response was YES. [2024-06-21 19:22:02,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19699 conditions, 2257 events. 1197/2257 cut-off events. For 496345/496345 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 14474 event pairs, 215 based on Foata normal form. 2/2259 useless extension candidates. Maximal degree in co-relation 19483. Up to 1737 conditions per place. [2024-06-21 19:22:02,965 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 361 selfloop transitions, 148 changer transitions 0/511 dead transitions. [2024-06-21 19:22:02,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 614 places, 511 transitions, 8423 flow [2024-06-21 19:22:02,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:22:02,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:22:02,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-21 19:22:02,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39589442815249265 [2024-06-21 19:22:02,966 INFO L175 Difference]: Start difference. First operand has 604 places, 500 transitions, 7381 flow. Second operand 11 states and 135 transitions. [2024-06-21 19:22:02,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 614 places, 511 transitions, 8423 flow [2024-06-21 19:22:05,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 608 places, 511 transitions, 8220 flow, removed 33 selfloop flow, removed 6 redundant places. [2024-06-21 19:22:05,952 INFO L231 Difference]: Finished difference. Result has 609 places, 500 transitions, 7479 flow [2024-06-21 19:22:05,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=7178, PETRI_DIFFERENCE_MINUEND_PLACES=598, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=500, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7479, PETRI_PLACES=609, PETRI_TRANSITIONS=500} [2024-06-21 19:22:05,952 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 579 predicate places. [2024-06-21 19:22:05,952 INFO L495 AbstractCegarLoop]: Abstraction has has 609 places, 500 transitions, 7479 flow [2024-06-21 19:22:05,952 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 19:22:05,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:22:05,952 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:22:05,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2024-06-21 19:22:05,952 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 19:22:05,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:22:05,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1194877433, now seen corresponding path program 8 times [2024-06-21 19:22:05,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:22:05,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420293535] [2024-06-21 19:22:05,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:22:05,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:22:05,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:22:08,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:22:08,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:22:08,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420293535] [2024-06-21 19:22:08,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420293535] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:22:08,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:22:08,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 19:22:08,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918430969] [2024-06-21 19:22:08,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:22:08,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 19:22:08,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:22:08,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 19:22:08,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-21 19:22:08,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:22:08,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 609 places, 500 transitions, 7479 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:22:08,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:22:08,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:22:08,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:22:09,053 INFO L124 PetriNetUnfolderBase]: 1223/2311 cut-off events. [2024-06-21 19:22:09,053 INFO L125 PetriNetUnfolderBase]: For 601280/601280 co-relation queries the response was YES. [2024-06-21 19:22:09,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21500 conditions, 2311 events. 1223/2311 cut-off events. For 601280/601280 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 14857 event pairs, 223 based on Foata normal form. 2/2313 useless extension candidates. Maximal degree in co-relation 21282. Up to 1881 conditions per place. [2024-06-21 19:22:09,090 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 392 selfloop transitions, 124 changer transitions 0/518 dead transitions. [2024-06-21 19:22:09,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 620 places, 518 transitions, 8971 flow [2024-06-21 19:22:09,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:22:09,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:22:09,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-21 19:22:09,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3924731182795699 [2024-06-21 19:22:09,091 INFO L175 Difference]: Start difference. First operand has 609 places, 500 transitions, 7479 flow. Second operand 12 states and 146 transitions. [2024-06-21 19:22:09,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 620 places, 518 transitions, 8971 flow [2024-06-21 19:22:12,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 610 places, 518 transitions, 8669 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-21 19:22:12,492 INFO L231 Difference]: Finished difference. Result has 611 places, 501 transitions, 7473 flow [2024-06-21 19:22:12,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=7177, PETRI_DIFFERENCE_MINUEND_PLACES=599, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=500, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7473, PETRI_PLACES=611, PETRI_TRANSITIONS=501} [2024-06-21 19:22:12,493 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 581 predicate places. [2024-06-21 19:22:12,493 INFO L495 AbstractCegarLoop]: Abstraction has has 611 places, 501 transitions, 7473 flow [2024-06-21 19:22:12,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:22:12,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:22:12,493 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 19:22:12,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2024-06-21 19:22:12,493 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 19:22:12,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:22:12,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1187249294, now seen corresponding path program 6 times [2024-06-21 19:22:12,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:22:12,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048467582] [2024-06-21 19:22:12,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:22:12,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:22:12,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:22:14,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:22:14,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:22:14,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048467582] [2024-06-21 19:22:14,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048467582] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:22:14,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:22:14,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:22:14,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736150818] [2024-06-21 19:22:14,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:22:14,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:22:14,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:22:14,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:22:14,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:22:14,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:22:14,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 611 places, 501 transitions, 7473 flow. Second operand has 10 states, 10 states have (on average 7.6) internal successors, (76), 10 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 19:22:14,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:22:14,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:22:14,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:22:14,993 INFO L124 PetriNetUnfolderBase]: 1226/2316 cut-off events. [2024-06-21 19:22:14,993 INFO L125 PetriNetUnfolderBase]: For 596837/596837 co-relation queries the response was YES. [2024-06-21 19:22:15,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21594 conditions, 2316 events. 1226/2316 cut-off events. For 596837/596837 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 14891 event pairs, 225 based on Foata normal form. 1/2317 useless extension candidates. Maximal degree in co-relation 21375. Up to 1773 conditions per place. [2024-06-21 19:22:15,032 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 347 selfloop transitions, 163 changer transitions 0/512 dead transitions. [2024-06-21 19:22:15,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 620 places, 512 transitions, 8581 flow [2024-06-21 19:22:15,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:22:15,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:22:15,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-21 19:22:15,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4064516129032258 [2024-06-21 19:22:15,033 INFO L175 Difference]: Start difference. First operand has 611 places, 501 transitions, 7473 flow. Second operand 10 states and 126 transitions. [2024-06-21 19:22:15,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 620 places, 512 transitions, 8581 flow [2024-06-21 19:22:18,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 610 places, 512 transitions, 8295 flow, removed 20 selfloop flow, removed 10 redundant places. [2024-06-21 19:22:18,570 INFO L231 Difference]: Finished difference. Result has 611 places, 503 transitions, 7611 flow [2024-06-21 19:22:18,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=7187, PETRI_DIFFERENCE_MINUEND_PLACES=601, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7611, PETRI_PLACES=611, PETRI_TRANSITIONS=503} [2024-06-21 19:22:18,570 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 581 predicate places. [2024-06-21 19:22:18,570 INFO L495 AbstractCegarLoop]: Abstraction has has 611 places, 503 transitions, 7611 flow [2024-06-21 19:22:18,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.6) internal successors, (76), 10 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 19:22:18,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:22:18,570 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 19:22:18,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2024-06-21 19:22:18,571 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 19:22:18,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:22:18,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1423869561, now seen corresponding path program 39 times [2024-06-21 19:22:18,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:22:18,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989509920] [2024-06-21 19:22:18,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:22:18,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:22:18,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:22:20,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:22:20,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:22:20,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989509920] [2024-06-21 19:22:20,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989509920] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:22:20,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:22:20,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:22:20,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474908111] [2024-06-21 19:22:20,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:22:20,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:22:20,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:22:20,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:22:20,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:22:20,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:22:20,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 611 places, 503 transitions, 7611 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 19:22:20,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:22:20,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:22:20,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:22:21,326 INFO L124 PetriNetUnfolderBase]: 1208/2278 cut-off events. [2024-06-21 19:22:21,326 INFO L125 PetriNetUnfolderBase]: For 518644/518644 co-relation queries the response was YES. [2024-06-21 19:22:21,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20196 conditions, 2278 events. 1208/2278 cut-off events. For 518644/518644 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 14657 event pairs, 207 based on Foata normal form. 2/2280 useless extension candidates. Maximal degree in co-relation 19976. Up to 1731 conditions per place. [2024-06-21 19:22:21,366 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 339 selfloop transitions, 176 changer transitions 0/517 dead transitions. [2024-06-21 19:22:21,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 621 places, 517 transitions, 9026 flow [2024-06-21 19:22:21,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:22:21,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:22:21,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-21 19:22:21,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-21 19:22:21,367 INFO L175 Difference]: Start difference. First operand has 611 places, 503 transitions, 7611 flow. Second operand 11 states and 132 transitions. [2024-06-21 19:22:21,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 621 places, 517 transitions, 9026 flow [2024-06-21 19:22:24,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 612 places, 517 transitions, 8656 flow, removed 29 selfloop flow, removed 9 redundant places. [2024-06-21 19:22:24,409 INFO L231 Difference]: Finished difference. Result has 613 places, 504 transitions, 7638 flow [2024-06-21 19:22:24,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=7243, PETRI_DIFFERENCE_MINUEND_PLACES=602, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=175, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7638, PETRI_PLACES=613, PETRI_TRANSITIONS=504} [2024-06-21 19:22:24,409 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 583 predicate places. [2024-06-21 19:22:24,409 INFO L495 AbstractCegarLoop]: Abstraction has has 613 places, 504 transitions, 7638 flow [2024-06-21 19:22:24,410 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 19:22:24,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:22:24,410 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 19:22:24,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2024-06-21 19:22:24,410 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 19:22:24,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:22:24,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1167161661, now seen corresponding path program 40 times [2024-06-21 19:22:24,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:22:24,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567658634] [2024-06-21 19:22:24,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:22:24,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:22:24,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:22:26,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:22:26,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:22:26,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567658634] [2024-06-21 19:22:26,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567658634] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:22:26,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:22:26,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:22:26,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932488144] [2024-06-21 19:22:26,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:22:26,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:22:26,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:22:26,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:22:26,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:22:26,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:22:26,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 613 places, 504 transitions, 7638 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 19:22:26,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:22:26,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:22:26,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:22:27,554 INFO L124 PetriNetUnfolderBase]: 1205/2273 cut-off events. [2024-06-21 19:22:27,554 INFO L125 PetriNetUnfolderBase]: For 491748/491748 co-relation queries the response was YES. [2024-06-21 19:22:27,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19820 conditions, 2273 events. 1205/2273 cut-off events. For 491748/491748 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 14633 event pairs, 416 based on Foata normal form. 2/2275 useless extension candidates. Maximal degree in co-relation 19600. Up to 2233 conditions per place. [2024-06-21 19:22:27,587 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 493 selfloop transitions, 20 changer transitions 0/515 dead transitions. [2024-06-21 19:22:27,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 624 places, 515 transitions, 8688 flow [2024-06-21 19:22:27,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:22:27,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:22:27,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 110 transitions. [2024-06-21 19:22:27,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2956989247311828 [2024-06-21 19:22:27,588 INFO L175 Difference]: Start difference. First operand has 613 places, 504 transitions, 7638 flow. Second operand 12 states and 110 transitions. [2024-06-21 19:22:27,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 624 places, 515 transitions, 8688 flow [2024-06-21 19:22:30,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 611 places, 515 transitions, 7839 flow, removed 34 selfloop flow, removed 13 redundant places. [2024-06-21 19:22:30,604 INFO L231 Difference]: Finished difference. Result has 612 places, 504 transitions, 6833 flow [2024-06-21 19:22:30,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6789, PETRI_DIFFERENCE_MINUEND_PLACES=600, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=484, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6833, PETRI_PLACES=612, PETRI_TRANSITIONS=504} [2024-06-21 19:22:30,604 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 582 predicate places. [2024-06-21 19:22:30,604 INFO L495 AbstractCegarLoop]: Abstraction has has 612 places, 504 transitions, 6833 flow [2024-06-21 19:22:30,604 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 19:22:30,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:22:30,605 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 19:22:30,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2024-06-21 19:22:30,605 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 19:22:30,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:22:30,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1680037609, now seen corresponding path program 9 times [2024-06-21 19:22:30,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:22:30,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635307461] [2024-06-21 19:22:30,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:22:30,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:22:30,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:22:32,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:22:32,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:22:32,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635307461] [2024-06-21 19:22:32,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635307461] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:22:32,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:22:32,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:22:32,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987544143] [2024-06-21 19:22:32,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:22:32,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:22:32,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:22:32,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:22:32,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:22:32,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:22:32,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 612 places, 504 transitions, 6833 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 19:22:32,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:22:32,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:22:32,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:22:33,210 INFO L124 PetriNetUnfolderBase]: 1261/2393 cut-off events. [2024-06-21 19:22:33,211 INFO L125 PetriNetUnfolderBase]: For 765195/765195 co-relation queries the response was YES. [2024-06-21 19:22:33,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21902 conditions, 2393 events. 1261/2393 cut-off events. For 765195/765195 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 15471 event pairs, 442 based on Foata normal form. 8/2401 useless extension candidates. Maximal degree in co-relation 21685. Up to 2125 conditions per place. [2024-06-21 19:22:33,251 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 490 selfloop transitions, 25 changer transitions 10/527 dead transitions. [2024-06-21 19:22:33,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 624 places, 527 transitions, 8439 flow [2024-06-21 19:22:33,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 19:22:33,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 19:22:33,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 131 transitions. [2024-06-21 19:22:33,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3250620347394541 [2024-06-21 19:22:33,252 INFO L175 Difference]: Start difference. First operand has 612 places, 504 transitions, 6833 flow. Second operand 13 states and 131 transitions. [2024-06-21 19:22:33,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 624 places, 527 transitions, 8439 flow [2024-06-21 19:22:37,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 611 places, 527 transitions, 8222 flow, removed 6 selfloop flow, removed 13 redundant places. [2024-06-21 19:22:37,137 INFO L231 Difference]: Finished difference. Result has 612 places, 501 transitions, 6653 flow [2024-06-21 19:22:37,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6620, PETRI_DIFFERENCE_MINUEND_PLACES=599, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=479, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6653, PETRI_PLACES=612, PETRI_TRANSITIONS=501} [2024-06-21 19:22:37,138 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 582 predicate places. [2024-06-21 19:22:37,138 INFO L495 AbstractCegarLoop]: Abstraction has has 612 places, 501 transitions, 6653 flow [2024-06-21 19:22:37,138 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 19:22:37,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:22:37,138 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 19:22:37,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2024-06-21 19:22:37,139 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 19:22:37,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:22:37,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1167161444, now seen corresponding path program 7 times [2024-06-21 19:22:37,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:22:37,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112871096] [2024-06-21 19:22:37,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:22:37,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:22:37,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:22:39,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:22:39,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:22:39,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112871096] [2024-06-21 19:22:39,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112871096] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:22:39,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:22:39,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:22:39,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252377266] [2024-06-21 19:22:39,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:22:39,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:22:39,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:22:39,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:22:39,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:22:39,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:22:39,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 612 places, 501 transitions, 6653 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 19:22:39,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:22:39,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:22:39,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:22:40,189 INFO L124 PetriNetUnfolderBase]: 1237/2344 cut-off events. [2024-06-21 19:22:40,189 INFO L125 PetriNetUnfolderBase]: For 659450/659450 co-relation queries the response was YES. [2024-06-21 19:22:40,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21127 conditions, 2344 events. 1237/2344 cut-off events. For 659450/659450 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 15071 event pairs, 444 based on Foata normal form. 1/2345 useless extension candidates. Maximal degree in co-relation 20910. Up to 2298 conditions per place. [2024-06-21 19:22:40,230 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 484 selfloop transitions, 25 changer transitions 0/511 dead transitions. [2024-06-21 19:22:40,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 619 places, 511 transitions, 7693 flow [2024-06-21 19:22:40,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:22:40,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:22:40,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 112 transitions. [2024-06-21 19:22:40,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3010752688172043 [2024-06-21 19:22:40,231 INFO L175 Difference]: Start difference. First operand has 612 places, 501 transitions, 6653 flow. Second operand 12 states and 112 transitions. [2024-06-21 19:22:40,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 619 places, 511 transitions, 7693 flow [2024-06-21 19:22:44,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 607 places, 511 transitions, 7609 flow, removed 21 selfloop flow, removed 12 redundant places. [2024-06-21 19:22:44,180 INFO L231 Difference]: Finished difference. Result has 608 places, 501 transitions, 6630 flow [2024-06-21 19:22:44,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6569, PETRI_DIFFERENCE_MINUEND_PLACES=596, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=476, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6630, PETRI_PLACES=608, PETRI_TRANSITIONS=501} [2024-06-21 19:22:44,181 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 578 predicate places. [2024-06-21 19:22:44,181 INFO L495 AbstractCegarLoop]: Abstraction has has 608 places, 501 transitions, 6630 flow [2024-06-21 19:22:44,181 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 19:22:44,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:22:44,181 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 19:22:44,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2024-06-21 19:22:44,182 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 19:22:44,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:22:44,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1168074247, now seen corresponding path program 10 times [2024-06-21 19:22:44,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:22:44,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792059882] [2024-06-21 19:22:44,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:22:44,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:22:44,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:22:46,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:22:46,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:22:46,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792059882] [2024-06-21 19:22:46,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792059882] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:22:46,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:22:46,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 19:22:46,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205536670] [2024-06-21 19:22:46,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:22:46,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 19:22:46,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:22:46,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 19:22:46,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-21 19:22:46,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:22:46,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 608 places, 501 transitions, 6630 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 19:22:46,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:22:46,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:22:46,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:22:47,455 INFO L124 PetriNetUnfolderBase]: 1241/2352 cut-off events. [2024-06-21 19:22:47,455 INFO L125 PetriNetUnfolderBase]: For 655927/655927 co-relation queries the response was YES. [2024-06-21 19:22:47,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21115 conditions, 2352 events. 1241/2352 cut-off events. For 655927/655927 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 15140 event pairs, 442 based on Foata normal form. 2/2354 useless extension candidates. Maximal degree in co-relation 20900. Up to 2209 conditions per place. [2024-06-21 19:22:47,494 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 495 selfloop transitions, 24 changer transitions 0/521 dead transitions. [2024-06-21 19:22:47,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 620 places, 521 transitions, 8218 flow [2024-06-21 19:22:47,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 19:22:47,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 19:22:47,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 125 transitions. [2024-06-21 19:22:47,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31017369727047145 [2024-06-21 19:22:47,495 INFO L175 Difference]: Start difference. First operand has 608 places, 501 transitions, 6630 flow. Second operand 13 states and 125 transitions. [2024-06-21 19:22:47,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 620 places, 521 transitions, 8218 flow [2024-06-21 19:22:51,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 610 places, 521 transitions, 8156 flow, removed 10 selfloop flow, removed 10 redundant places. [2024-06-21 19:22:51,430 INFO L231 Difference]: Finished difference. Result has 611 places, 502 transitions, 6666 flow [2024-06-21 19:22:51,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6568, PETRI_DIFFERENCE_MINUEND_PLACES=598, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=477, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6666, PETRI_PLACES=611, PETRI_TRANSITIONS=502} [2024-06-21 19:22:51,431 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 581 predicate places. [2024-06-21 19:22:51,431 INFO L495 AbstractCegarLoop]: Abstraction has has 611 places, 502 transitions, 6666 flow [2024-06-21 19:22:51,431 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 19:22:51,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:22:51,431 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 19:22:51,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2024-06-21 19:22:51,431 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 19:22:51,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:22:51,431 INFO L85 PathProgramCache]: Analyzing trace with hash -17745427, now seen corresponding path program 11 times [2024-06-21 19:22:51,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:22:51,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625508334] [2024-06-21 19:22:51,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:22:51,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:22:51,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:22:53,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:22:53,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:22:53,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625508334] [2024-06-21 19:22:53,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625508334] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:22:53,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:22:53,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:22:53,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591014335] [2024-06-21 19:22:53,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:22:53,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:22:53,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:22:53,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:22:53,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:22:53,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:22:53,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 611 places, 502 transitions, 6666 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 19:22:53,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:22:53,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:22:53,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:22:54,455 INFO L124 PetriNetUnfolderBase]: 1238/2347 cut-off events. [2024-06-21 19:22:54,456 INFO L125 PetriNetUnfolderBase]: For 639110/639110 co-relation queries the response was YES. [2024-06-21 19:22:54,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20808 conditions, 2347 events. 1238/2347 cut-off events. For 639110/639110 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 15105 event pairs, 443 based on Foata normal form. 2/2349 useless extension candidates. Maximal degree in co-relation 20592. Up to 2295 conditions per place. [2024-06-21 19:22:54,494 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 489 selfloop transitions, 26 changer transitions 0/517 dead transitions. [2024-06-21 19:22:54,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 622 places, 517 transitions, 7825 flow [2024-06-21 19:22:54,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:22:54,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:22:54,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 115 transitions. [2024-06-21 19:22:54,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30913978494623656 [2024-06-21 19:22:54,495 INFO L175 Difference]: Start difference. First operand has 611 places, 502 transitions, 6666 flow. Second operand 12 states and 115 transitions. [2024-06-21 19:22:54,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 622 places, 517 transitions, 7825 flow [2024-06-21 19:22:58,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 611 places, 517 transitions, 7735 flow, removed 21 selfloop flow, removed 11 redundant places. [2024-06-21 19:22:58,247 INFO L231 Difference]: Finished difference. Result has 612 places, 505 transitions, 6737 flow [2024-06-21 19:22:58,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6578, PETRI_DIFFERENCE_MINUEND_PLACES=600, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=478, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6737, PETRI_PLACES=612, PETRI_TRANSITIONS=505} [2024-06-21 19:22:58,247 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 582 predicate places. [2024-06-21 19:22:58,247 INFO L495 AbstractCegarLoop]: Abstraction has has 612 places, 505 transitions, 6737 flow [2024-06-21 19:22:58,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:22:58,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:22:58,247 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:22:58,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2024-06-21 19:22:58,247 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 19:22:58,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:22:58,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1668995719, now seen corresponding path program 12 times [2024-06-21 19:22:58,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:22:58,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427408275] [2024-06-21 19:22:58,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:22:58,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:22:58,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:23:00,235 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 19:23:00,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:23:00,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427408275] [2024-06-21 19:23:00,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427408275] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:23:00,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:23:00,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:23:00,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161341264] [2024-06-21 19:23:00,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:23:00,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:23:00,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:23:00,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:23:00,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:23:00,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:23:00,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 612 places, 505 transitions, 6737 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 19:23:00,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:23:00,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:23:00,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:23:01,178 INFO L124 PetriNetUnfolderBase]: 1242/2355 cut-off events. [2024-06-21 19:23:01,178 INFO L125 PetriNetUnfolderBase]: For 650363/650363 co-relation queries the response was YES. [2024-06-21 19:23:01,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20899 conditions, 2355 events. 1242/2355 cut-off events. For 650363/650363 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 15199 event pairs, 437 based on Foata normal form. 2/2357 useless extension candidates. Maximal degree in co-relation 20682. Up to 2214 conditions per place. [2024-06-21 19:23:01,218 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 494 selfloop transitions, 29 changer transitions 0/525 dead transitions. [2024-06-21 19:23:01,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 624 places, 525 transitions, 8303 flow [2024-06-21 19:23:01,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 19:23:01,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 19:23:01,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 130 transitions. [2024-06-21 19:23:01,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-21 19:23:01,219 INFO L175 Difference]: Start difference. First operand has 612 places, 505 transitions, 6737 flow. Second operand 13 states and 130 transitions. [2024-06-21 19:23:01,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 624 places, 525 transitions, 8303 flow [2024-06-21 19:23:04,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 617 places, 525 transitions, 8191 flow, removed 44 selfloop flow, removed 7 redundant places. [2024-06-21 19:23:04,940 INFO L231 Difference]: Finished difference. Result has 618 places, 506 transitions, 6737 flow [2024-06-21 19:23:04,940 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6625, PETRI_DIFFERENCE_MINUEND_PLACES=605, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=505, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=476, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6737, PETRI_PLACES=618, PETRI_TRANSITIONS=506} [2024-06-21 19:23:04,941 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 588 predicate places. [2024-06-21 19:23:04,941 INFO L495 AbstractCegarLoop]: Abstraction has has 618 places, 506 transitions, 6737 flow [2024-06-21 19:23:04,941 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 19:23:04,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:23:04,941 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 19:23:04,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2024-06-21 19:23:04,941 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 19:23:04,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:23:04,942 INFO L85 PathProgramCache]: Analyzing trace with hash -854384317, now seen corresponding path program 13 times [2024-06-21 19:23:04,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:23:04,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677928669] [2024-06-21 19:23:04,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:23:04,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:23:04,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:23:06,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:23:06,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:23:06,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677928669] [2024-06-21 19:23:06,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677928669] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:23:06,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:23:06,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:23:06,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310830667] [2024-06-21 19:23:06,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:23:06,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:23:06,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:23:06,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:23:06,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:23:06,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:23:06,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 618 places, 506 transitions, 6737 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 19:23:06,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:23:06,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:23:06,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:23:07,675 INFO L124 PetriNetUnfolderBase]: 1239/2350 cut-off events. [2024-06-21 19:23:07,676 INFO L125 PetriNetUnfolderBase]: For 628662/628662 co-relation queries the response was YES. [2024-06-21 19:23:07,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20504 conditions, 2350 events. 1239/2350 cut-off events. For 628662/628662 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 15164 event pairs, 440 based on Foata normal form. 2/2352 useless extension candidates. Maximal degree in co-relation 20285. Up to 2286 conditions per place. [2024-06-21 19:23:07,714 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 488 selfloop transitions, 31 changer transitions 0/521 dead transitions. [2024-06-21 19:23:07,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 630 places, 521 transitions, 7861 flow [2024-06-21 19:23:07,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 19:23:07,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 19:23:07,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 124 transitions. [2024-06-21 19:23:07,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3076923076923077 [2024-06-21 19:23:07,715 INFO L175 Difference]: Start difference. First operand has 618 places, 506 transitions, 6737 flow. Second operand 13 states and 124 transitions. [2024-06-21 19:23:07,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 630 places, 521 transitions, 7861 flow [2024-06-21 19:23:11,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 619 places, 521 transitions, 7757 flow, removed 23 selfloop flow, removed 11 redundant places. [2024-06-21 19:23:11,509 INFO L231 Difference]: Finished difference. Result has 620 places, 508 transitions, 6757 flow [2024-06-21 19:23:11,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6635, PETRI_DIFFERENCE_MINUEND_PLACES=607, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=506, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=477, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6757, PETRI_PLACES=620, PETRI_TRANSITIONS=508} [2024-06-21 19:23:11,509 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 590 predicate places. [2024-06-21 19:23:11,509 INFO L495 AbstractCegarLoop]: Abstraction has has 620 places, 508 transitions, 6757 flow [2024-06-21 19:23:11,509 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 19:23:11,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:23:11,509 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 19:23:11,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2024-06-21 19:23:11,510 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 19:23:11,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:23:11,510 INFO L85 PathProgramCache]: Analyzing trace with hash 595147422, now seen corresponding path program 1 times [2024-06-21 19:23:11,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:23:11,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159587636] [2024-06-21 19:23:11,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:23:11,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:23:11,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:23:13,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:23:13,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:23:13,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159587636] [2024-06-21 19:23:13,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159587636] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:23:13,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:23:13,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:23:13,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962775678] [2024-06-21 19:23:13,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:23:13,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:23:13,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:23:13,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:23:13,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:23:13,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:23:13,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 620 places, 508 transitions, 6757 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 19:23:13,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:23:13,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:23:13,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:23:14,028 INFO L124 PetriNetUnfolderBase]: 1247/2370 cut-off events. [2024-06-21 19:23:14,029 INFO L125 PetriNetUnfolderBase]: For 688161/688161 co-relation queries the response was YES. [2024-06-21 19:23:14,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20573 conditions, 2370 events. 1247/2370 cut-off events. For 688161/688161 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 15310 event pairs, 189 based on Foata normal form. 6/2376 useless extension candidates. Maximal degree in co-relation 20353. Up to 2086 conditions per place. [2024-06-21 19:23:14,083 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 470 selfloop transitions, 13 changer transitions 43/528 dead transitions. [2024-06-21 19:23:14,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 629 places, 528 transitions, 7885 flow [2024-06-21 19:23:14,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:23:14,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:23:14,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 103 transitions. [2024-06-21 19:23:14,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33225806451612905 [2024-06-21 19:23:14,084 INFO L175 Difference]: Start difference. First operand has 620 places, 508 transitions, 6757 flow. Second operand 10 states and 103 transitions. [2024-06-21 19:23:14,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 629 places, 528 transitions, 7885 flow [2024-06-21 19:23:17,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 611 places, 528 transitions, 7203 flow, removed 48 selfloop flow, removed 18 redundant places. [2024-06-21 19:23:17,796 INFO L231 Difference]: Finished difference. Result has 612 places, 481 transitions, 5846 flow [2024-06-21 19:23:17,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6075, PETRI_DIFFERENCE_MINUEND_PLACES=602, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=508, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=495, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5846, PETRI_PLACES=612, PETRI_TRANSITIONS=481} [2024-06-21 19:23:17,797 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 582 predicate places. [2024-06-21 19:23:17,797 INFO L495 AbstractCegarLoop]: Abstraction has has 612 places, 481 transitions, 5846 flow [2024-06-21 19:23:17,797 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 19:23:17,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:23:17,797 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 19:23:17,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2024-06-21 19:23:17,797 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 19:23:17,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:23:17,797 INFO L85 PathProgramCache]: Analyzing trace with hash -327008440, now seen corresponding path program 2 times [2024-06-21 19:23:17,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:23:17,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208006110] [2024-06-21 19:23:17,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:23:17,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:23:17,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:23:19,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:23:19,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:23:19,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208006110] [2024-06-21 19:23:19,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208006110] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:23:19,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:23:19,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:23:19,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853370879] [2024-06-21 19:23:19,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:23:19,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:23:19,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:23:19,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:23:19,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:23:19,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:23:19,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 612 places, 481 transitions, 5846 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 19:23:19,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:23:19,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:23:19,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:23:20,536 INFO L124 PetriNetUnfolderBase]: 1186/2253 cut-off events. [2024-06-21 19:23:20,536 INFO L125 PetriNetUnfolderBase]: For 694590/694590 co-relation queries the response was YES. [2024-06-21 19:23:20,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18854 conditions, 2253 events. 1186/2253 cut-off events. For 694590/694590 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 14418 event pairs, 179 based on Foata normal form. 6/2259 useless extension candidates. Maximal degree in co-relation 18642. Up to 2016 conditions per place. [2024-06-21 19:23:20,573 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 450 selfloop transitions, 49 changer transitions 15/516 dead transitions. [2024-06-21 19:23:20,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 600 places, 516 transitions, 7092 flow [2024-06-21 19:23:20,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:23:20,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:23:20,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 123 transitions. [2024-06-21 19:23:20,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33064516129032256 [2024-06-21 19:23:20,574 INFO L175 Difference]: Start difference. First operand has 612 places, 481 transitions, 5846 flow. Second operand 12 states and 123 transitions. [2024-06-21 19:23:20,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 600 places, 516 transitions, 7092 flow [2024-06-21 19:23:24,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 581 places, 516 transitions, 6977 flow, removed 19 selfloop flow, removed 19 redundant places. [2024-06-21 19:23:24,208 INFO L231 Difference]: Finished difference. Result has 587 places, 488 transitions, 5955 flow [2024-06-21 19:23:24,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5731, PETRI_DIFFERENCE_MINUEND_PLACES=570, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=481, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=432, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5955, PETRI_PLACES=587, PETRI_TRANSITIONS=488} [2024-06-21 19:23:24,209 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 557 predicate places. [2024-06-21 19:23:24,209 INFO L495 AbstractCegarLoop]: Abstraction has has 587 places, 488 transitions, 5955 flow [2024-06-21 19:23:24,209 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 19:23:24,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:23:24,209 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 19:23:24,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2024-06-21 19:23:24,209 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 19:23:24,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:23:24,210 INFO L85 PathProgramCache]: Analyzing trace with hash -211544290, now seen corresponding path program 3 times [2024-06-21 19:23:24,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:23:24,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984761149] [2024-06-21 19:23:24,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:23:24,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:23:24,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:23:26,066 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 19:23:26,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:23:26,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984761149] [2024-06-21 19:23:26,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984761149] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:23:26,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:23:26,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:23:26,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744647807] [2024-06-21 19:23:26,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:23:26,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:23:26,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:23:26,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:23:26,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:23:26,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:23:26,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 587 places, 488 transitions, 5955 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 19:23:26,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:23:26,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:23:26,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:23:26,944 INFO L124 PetriNetUnfolderBase]: 1168/2219 cut-off events. [2024-06-21 19:23:26,945 INFO L125 PetriNetUnfolderBase]: For 564440/564440 co-relation queries the response was YES. [2024-06-21 19:23:26,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18082 conditions, 2219 events. 1168/2219 cut-off events. For 564440/564440 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 14150 event pairs, 192 based on Foata normal form. 6/2225 useless extension candidates. Maximal degree in co-relation 17876. Up to 1791 conditions per place. [2024-06-21 19:23:26,979 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 363 selfloop transitions, 112 changer transitions 25/502 dead transitions. [2024-06-21 19:23:26,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 592 places, 502 transitions, 7017 flow [2024-06-21 19:23:26,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:23:26,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:23:26,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-21 19:23:26,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3774193548387097 [2024-06-21 19:23:26,980 INFO L175 Difference]: Start difference. First operand has 587 places, 488 transitions, 5955 flow. Second operand 10 states and 117 transitions. [2024-06-21 19:23:26,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 592 places, 502 transitions, 7017 flow [2024-06-21 19:23:29,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 580 places, 502 transitions, 6918 flow, removed 11 selfloop flow, removed 12 redundant places. [2024-06-21 19:23:29,948 INFO L231 Difference]: Finished difference. Result has 581 places, 469 transitions, 5859 flow [2024-06-21 19:23:29,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5856, PETRI_DIFFERENCE_MINUEND_PLACES=571, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=488, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5859, PETRI_PLACES=581, PETRI_TRANSITIONS=469} [2024-06-21 19:23:29,949 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 551 predicate places. [2024-06-21 19:23:29,949 INFO L495 AbstractCegarLoop]: Abstraction has has 581 places, 469 transitions, 5859 flow [2024-06-21 19:23:29,949 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 19:23:29,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:23:29,949 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 19:23:29,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2024-06-21 19:23:29,950 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 19:23:29,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:23:29,950 INFO L85 PathProgramCache]: Analyzing trace with hash -211717270, now seen corresponding path program 4 times [2024-06-21 19:23:29,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:23:29,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278014867] [2024-06-21 19:23:29,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:23:29,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:23:29,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:23:31,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:23:31,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:23:31,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278014867] [2024-06-21 19:23:31,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278014867] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:23:31,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:23:31,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 19:23:31,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961966915] [2024-06-21 19:23:31,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:23:31,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 19:23:31,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:23:31,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 19:23:31,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-06-21 19:23:32,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:23:32,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 581 places, 469 transitions, 5859 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 19:23:32,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:23:32,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:23:32,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:23:32,734 INFO L124 PetriNetUnfolderBase]: 1118/2137 cut-off events. [2024-06-21 19:23:32,734 INFO L125 PetriNetUnfolderBase]: For 564218/564218 co-relation queries the response was YES. [2024-06-21 19:23:32,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17782 conditions, 2137 events. 1118/2137 cut-off events. For 564218/564218 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 13634 event pairs, 226 based on Foata normal form. 6/2143 useless extension candidates. Maximal degree in co-relation 17581. Up to 1862 conditions per place. [2024-06-21 19:23:32,766 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 410 selfloop transitions, 48 changer transitions 27/487 dead transitions. [2024-06-21 19:23:32,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 585 places, 487 transitions, 6901 flow [2024-06-21 19:23:32,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:23:32,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:23:32,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-21 19:23:32,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34946236559139787 [2024-06-21 19:23:32,769 INFO L175 Difference]: Start difference. First operand has 581 places, 469 transitions, 5859 flow. Second operand 12 states and 130 transitions. [2024-06-21 19:23:32,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 585 places, 487 transitions, 6901 flow [2024-06-21 19:23:35,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 568 places, 487 transitions, 6631 flow, removed 5 selfloop flow, removed 17 redundant places. [2024-06-21 19:23:35,549 INFO L231 Difference]: Finished difference. Result has 569 places, 450 transitions, 5417 flow [2024-06-21 19:23:35,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5589, PETRI_DIFFERENCE_MINUEND_PLACES=557, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=469, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=421, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5417, PETRI_PLACES=569, PETRI_TRANSITIONS=450} [2024-06-21 19:23:35,550 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 539 predicate places. [2024-06-21 19:23:35,550 INFO L495 AbstractCegarLoop]: Abstraction has has 569 places, 450 transitions, 5417 flow [2024-06-21 19:23:35,550 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 19:23:35,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:23:35,550 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:23:35,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2024-06-21 19:23:35,550 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 19:23:35,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:23:35,550 INFO L85 PathProgramCache]: Analyzing trace with hash -943316138, now seen corresponding path program 5 times [2024-06-21 19:23:35,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:23:35,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102092503] [2024-06-21 19:23:35,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:23:35,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:23:35,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:23:37,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:23:37,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:23:37,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102092503] [2024-06-21 19:23:37,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102092503] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:23:37,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:23:37,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 19:23:37,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080943406] [2024-06-21 19:23:37,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:23:37,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 19:23:37,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:23:37,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 19:23:37,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-21 19:23:37,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:23:37,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 569 places, 450 transitions, 5417 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 19:23:37,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:23:37,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:23:37,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:23:38,287 INFO L124 PetriNetUnfolderBase]: 1068/2047 cut-off events. [2024-06-21 19:23:38,287 INFO L125 PetriNetUnfolderBase]: For 533215/533215 co-relation queries the response was YES. [2024-06-21 19:23:38,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16977 conditions, 2047 events. 1068/2047 cut-off events. For 533215/533215 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 12902 event pairs, 197 based on Foata normal form. 6/2053 useless extension candidates. Maximal degree in co-relation 16784. Up to 1736 conditions per place. [2024-06-21 19:23:38,320 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 401 selfloop transitions, 30 changer transitions 36/469 dead transitions. [2024-06-21 19:23:38,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 572 places, 469 transitions, 6425 flow [2024-06-21 19:23:38,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:23:38,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:23:38,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-21 19:23:38,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34946236559139787 [2024-06-21 19:23:38,321 INFO L175 Difference]: Start difference. First operand has 569 places, 450 transitions, 5417 flow. Second operand 12 states and 130 transitions. [2024-06-21 19:23:38,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 572 places, 469 transitions, 6425 flow [2024-06-21 19:23:40,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 545 places, 469 transitions, 6190 flow, removed 6 selfloop flow, removed 27 redundant places. [2024-06-21 19:23:40,939 INFO L231 Difference]: Finished difference. Result has 546 places, 424 transitions, 4897 flow [2024-06-21 19:23:40,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5182, PETRI_DIFFERENCE_MINUEND_PLACES=534, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=450, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4897, PETRI_PLACES=546, PETRI_TRANSITIONS=424} [2024-06-21 19:23:40,939 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 516 predicate places. [2024-06-21 19:23:40,939 INFO L495 AbstractCegarLoop]: Abstraction has has 546 places, 424 transitions, 4897 flow [2024-06-21 19:23:40,939 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 19:23:40,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:23:40,940 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 19:23:40,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2024-06-21 19:23:40,940 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 19:23:40,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:23:40,941 INFO L85 PathProgramCache]: Analyzing trace with hash 492835660, now seen corresponding path program 6 times [2024-06-21 19:23:40,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:23:40,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736077427] [2024-06-21 19:23:40,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:23:40,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:23:40,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:23:42,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:23:42,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:23:42,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736077427] [2024-06-21 19:23:42,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736077427] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:23:42,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:23:42,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 19:23:42,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977907341] [2024-06-21 19:23:42,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:23:42,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 19:23:42,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:23:42,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 19:23:42,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-21 19:23:42,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:23:42,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 546 places, 424 transitions, 4897 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 19:23:42,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:23:42,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:23:42,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:23:43,592 INFO L124 PetriNetUnfolderBase]: 992/1899 cut-off events. [2024-06-21 19:23:43,592 INFO L125 PetriNetUnfolderBase]: For 495416/495416 co-relation queries the response was YES. [2024-06-21 19:23:43,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15923 conditions, 1899 events. 992/1899 cut-off events. For 495416/495416 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 11687 event pairs, 157 based on Foata normal form. 6/1905 useless extension candidates. Maximal degree in co-relation 15740. Up to 1596 conditions per place. [2024-06-21 19:23:43,619 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 388 selfloop transitions, 14 changer transitions 40/444 dead transitions. [2024-06-21 19:23:43,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 544 places, 444 transitions, 5857 flow [2024-06-21 19:23:43,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:23:43,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:23:43,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-21 19:23:43,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-21 19:23:43,620 INFO L175 Difference]: Start difference. First operand has 546 places, 424 transitions, 4897 flow. Second operand 11 states and 124 transitions. [2024-06-21 19:23:43,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 544 places, 444 transitions, 5857 flow [2024-06-21 19:23:45,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 517 places, 444 transitions, 5696 flow, removed 5 selfloop flow, removed 27 redundant places. [2024-06-21 19:23:45,610 INFO L231 Difference]: Finished difference. Result has 518 places, 396 transitions, 4485 flow [2024-06-21 19:23:45,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4736, PETRI_DIFFERENCE_MINUEND_PLACES=507, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4485, PETRI_PLACES=518, PETRI_TRANSITIONS=396} [2024-06-21 19:23:45,611 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 488 predicate places. [2024-06-21 19:23:45,611 INFO L495 AbstractCegarLoop]: Abstraction has has 518 places, 396 transitions, 4485 flow [2024-06-21 19:23:45,611 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 19:23:45,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:23:45,611 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 19:23:45,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2024-06-21 19:23:45,611 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 19:23:45,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:23:45,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1251458432, now seen corresponding path program 1 times [2024-06-21 19:23:45,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:23:45,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753590227] [2024-06-21 19:23:45,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:23:45,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:23:45,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:23:47,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:23:47,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:23:47,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753590227] [2024-06-21 19:23:47,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753590227] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:23:47,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:23:47,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 19:23:47,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934178710] [2024-06-21 19:23:47,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:23:47,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 19:23:47,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:23:47,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 19:23:47,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-21 19:23:47,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:23:47,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 518 places, 396 transitions, 4485 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 19:23:47,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:23:47,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:23:47,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:23:48,720 INFO L124 PetriNetUnfolderBase]: 915/1751 cut-off events. [2024-06-21 19:23:48,720 INFO L125 PetriNetUnfolderBase]: For 483962/483962 co-relation queries the response was YES. [2024-06-21 19:23:48,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15101 conditions, 1751 events. 915/1751 cut-off events. For 483962/483962 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 10539 event pairs, 150 based on Foata normal form. 8/1759 useless extension candidates. Maximal degree in co-relation 14927. Up to 1577 conditions per place. [2024-06-21 19:23:48,745 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 349 selfloop transitions, 7 changer transitions 57/415 dead transitions. [2024-06-21 19:23:48,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 513 places, 415 transitions, 5425 flow [2024-06-21 19:23:48,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:23:48,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:23:48,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 116 transitions. [2024-06-21 19:23:48,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3118279569892473 [2024-06-21 19:23:48,746 INFO L175 Difference]: Start difference. First operand has 518 places, 396 transitions, 4485 flow. Second operand 12 states and 116 transitions. [2024-06-21 19:23:48,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 513 places, 415 transitions, 5425 flow [2024-06-21 19:23:50,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 485 places, 415 transitions, 5268 flow, removed 11 selfloop flow, removed 28 redundant places. [2024-06-21 19:23:50,677 INFO L231 Difference]: Finished difference. Result has 486 places, 354 transitions, 3812 flow [2024-06-21 19:23:50,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4328, PETRI_DIFFERENCE_MINUEND_PLACES=474, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3812, PETRI_PLACES=486, PETRI_TRANSITIONS=354} [2024-06-21 19:23:50,677 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 456 predicate places. [2024-06-21 19:23:50,677 INFO L495 AbstractCegarLoop]: Abstraction has has 486 places, 354 transitions, 3812 flow [2024-06-21 19:23:50,677 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 19:23:50,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:23:50,677 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 19:23:50,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2024-06-21 19:23:50,678 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 19:23:50,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:23:50,678 INFO L85 PathProgramCache]: Analyzing trace with hash -611378474, now seen corresponding path program 2 times [2024-06-21 19:23:50,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:23:50,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477680872] [2024-06-21 19:23:50,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:23:50,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:23:50,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:23:52,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:23:52,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:23:52,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477680872] [2024-06-21 19:23:52,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477680872] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:23:52,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:23:52,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:23:52,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510998558] [2024-06-21 19:23:52,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:23:52,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:23:52,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:23:52,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:23:52,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:23:52,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:23:52,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 486 places, 354 transitions, 3812 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 19:23:52,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:23:52,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:23:52,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:23:53,119 INFO L124 PetriNetUnfolderBase]: 851/1625 cut-off events. [2024-06-21 19:23:53,119 INFO L125 PetriNetUnfolderBase]: For 413396/413396 co-relation queries the response was YES. [2024-06-21 19:23:53,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13802 conditions, 1625 events. 851/1625 cut-off events. For 413396/413396 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 9741 event pairs, 150 based on Foata normal form. 8/1633 useless extension candidates. Maximal degree in co-relation 13639. Up to 1381 conditions per place. [2024-06-21 19:23:53,140 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 289 selfloop transitions, 43 changer transitions 34/368 dead transitions. [2024-06-21 19:23:53,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 368 transitions, 4642 flow [2024-06-21 19:23:53,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:23:53,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:23:53,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-21 19:23:53,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38064516129032255 [2024-06-21 19:23:53,141 INFO L175 Difference]: Start difference. First operand has 486 places, 354 transitions, 3812 flow. Second operand 10 states and 118 transitions. [2024-06-21 19:23:53,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 368 transitions, 4642 flow [2024-06-21 19:23:54,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 368 transitions, 4519 flow, removed 22 selfloop flow, removed 18 redundant places. [2024-06-21 19:23:54,847 INFO L231 Difference]: Finished difference. Result has 447 places, 325 transitions, 3485 flow [2024-06-21 19:23:54,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3697, PETRI_DIFFERENCE_MINUEND_PLACES=437, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3485, PETRI_PLACES=447, PETRI_TRANSITIONS=325} [2024-06-21 19:23:54,848 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 417 predicate places. [2024-06-21 19:23:54,848 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 325 transitions, 3485 flow [2024-06-21 19:23:54,848 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 19:23:54,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:23:54,848 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 19:23:54,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2024-06-21 19:23:54,848 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 19:23:54,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:23:54,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1455243464, now seen corresponding path program 7 times [2024-06-21 19:23:54,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:23:54,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762411071] [2024-06-21 19:23:54,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:23:54,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:23:54,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:23:57,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:23:57,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:23:57,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762411071] [2024-06-21 19:23:57,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762411071] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:23:57,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:23:57,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 19:23:57,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636594233] [2024-06-21 19:23:57,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:23:57,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 19:23:57,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:23:57,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 19:23:57,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-21 19:23:57,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:23:57,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 325 transitions, 3485 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:23:57,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:23:57,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:23:57,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:23:57,974 INFO L124 PetriNetUnfolderBase]: 798/1538 cut-off events. [2024-06-21 19:23:57,974 INFO L125 PetriNetUnfolderBase]: For 361791/361791 co-relation queries the response was YES. [2024-06-21 19:23:57,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12868 conditions, 1538 events. 798/1538 cut-off events. For 361791/361791 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 9165 event pairs, 138 based on Foata normal form. 6/1544 useless extension candidates. Maximal degree in co-relation 12712. Up to 1314 conditions per place. [2024-06-21 19:23:57,993 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 291 selfloop transitions, 34 changer transitions 15/342 dead transitions. [2024-06-21 19:23:57,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 342 transitions, 4231 flow [2024-06-21 19:23:57,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:23:57,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:23:57,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 118 transitions. [2024-06-21 19:23:57,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3172043010752688 [2024-06-21 19:23:57,994 INFO L175 Difference]: Start difference. First operand has 447 places, 325 transitions, 3485 flow. Second operand 12 states and 118 transitions. [2024-06-21 19:23:57,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 451 places, 342 transitions, 4231 flow [2024-06-21 19:23:59,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 342 transitions, 4081 flow, removed 6 selfloop flow, removed 26 redundant places. [2024-06-21 19:23:59,466 INFO L231 Difference]: Finished difference. Result has 426 places, 318 transitions, 3348 flow [2024-06-21 19:23:59,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3335, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3348, PETRI_PLACES=426, PETRI_TRANSITIONS=318} [2024-06-21 19:23:59,467 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 396 predicate places. [2024-06-21 19:23:59,467 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 318 transitions, 3348 flow [2024-06-21 19:23:59,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:23:59,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:23:59,467 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 19:23:59,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2024-06-21 19:23:59,467 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 19:23:59,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:23:59,468 INFO L85 PathProgramCache]: Analyzing trace with hash 817001804, now seen corresponding path program 8 times [2024-06-21 19:23:59,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:23:59,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497306871] [2024-06-21 19:23:59,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:23:59,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:23:59,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:24:01,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:24:01,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:24:01,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497306871] [2024-06-21 19:24:01,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497306871] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:24:01,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:24:01,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:24:01,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935538507] [2024-06-21 19:24:01,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:24:01,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:24:01,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:24:01,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:24:01,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:24:01,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:24:01,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 318 transitions, 3348 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 19:24:01,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:24:01,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:24:01,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:24:01,999 INFO L124 PetriNetUnfolderBase]: 774/1494 cut-off events. [2024-06-21 19:24:01,999 INFO L125 PetriNetUnfolderBase]: For 331327/331327 co-relation queries the response was YES. [2024-06-21 19:24:02,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12412 conditions, 1494 events. 774/1494 cut-off events. For 331327/331327 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 8797 event pairs, 132 based on Foata normal form. 6/1500 useless extension candidates. Maximal degree in co-relation 12265. Up to 1226 conditions per place. [2024-06-21 19:24:02,014 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 262 selfloop transitions, 17 changer transitions 52/333 dead transitions. [2024-06-21 19:24:02,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 333 transitions, 4072 flow [2024-06-21 19:24:02,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:24:02,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:24:02,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-21 19:24:02,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3519061583577713 [2024-06-21 19:24:02,015 INFO L175 Difference]: Start difference. First operand has 426 places, 318 transitions, 3348 flow. Second operand 11 states and 120 transitions. [2024-06-21 19:24:02,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 333 transitions, 4072 flow [2024-06-21 19:24:03,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 333 transitions, 3990 flow, removed 3 selfloop flow, removed 13 redundant places. [2024-06-21 19:24:03,301 INFO L231 Difference]: Finished difference. Result has 418 places, 274 transitions, 2826 flow [2024-06-21 19:24:03,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3266, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2826, PETRI_PLACES=418, PETRI_TRANSITIONS=274} [2024-06-21 19:24:03,302 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 388 predicate places. [2024-06-21 19:24:03,302 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 274 transitions, 2826 flow [2024-06-21 19:24:03,302 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 19:24:03,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:24:03,302 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 19:24:03,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2024-06-21 19:24:03,302 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 19:24:03,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:24:03,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1922046794, now seen corresponding path program 9 times [2024-06-21 19:24:03,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:24:03,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756233193] [2024-06-21 19:24:03,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:24:03,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:24:03,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:24:05,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:24:05,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:24:05,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756233193] [2024-06-21 19:24:05,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756233193] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:24:05,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:24:05,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 19:24:05,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845817385] [2024-06-21 19:24:05,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:24:05,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 19:24:05,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:24:05,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 19:24:05,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-06-21 19:24:05,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:24:05,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 274 transitions, 2826 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 19:24:05,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:24:05,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:24:05,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:24:06,186 INFO L124 PetriNetUnfolderBase]: 682/1314 cut-off events. [2024-06-21 19:24:06,186 INFO L125 PetriNetUnfolderBase]: For 318927/318927 co-relation queries the response was YES. [2024-06-21 19:24:06,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11486 conditions, 1314 events. 682/1314 cut-off events. For 318927/318927 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 7470 event pairs, 126 based on Foata normal form. 6/1320 useless extension candidates. Maximal degree in co-relation 11341. Up to 1182 conditions per place. [2024-06-21 19:24:06,202 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 254 selfloop transitions, 13 changer transitions 22/291 dead transitions. [2024-06-21 19:24:06,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 291 transitions, 3470 flow [2024-06-21 19:24:06,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:24:06,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:24:06,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 126 transitions. [2024-06-21 19:24:06,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-21 19:24:06,203 INFO L175 Difference]: Start difference. First operand has 418 places, 274 transitions, 2826 flow. Second operand 12 states and 126 transitions. [2024-06-21 19:24:06,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 291 transitions, 3470 flow [2024-06-21 19:24:07,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 291 transitions, 3360 flow, removed 11 selfloop flow, removed 30 redundant places. [2024-06-21 19:24:07,443 INFO L231 Difference]: Finished difference. Result has 365 places, 263 transitions, 2658 flow [2024-06-21 19:24:07,443 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2716, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2658, PETRI_PLACES=365, PETRI_TRANSITIONS=263} [2024-06-21 19:24:07,444 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 335 predicate places. [2024-06-21 19:24:07,444 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 263 transitions, 2658 flow [2024-06-21 19:24:07,444 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 19:24:07,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:24:07,444 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 19:24:07,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2024-06-21 19:24:07,444 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 19:24:07,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:24:07,444 INFO L85 PathProgramCache]: Analyzing trace with hash 701710634, now seen corresponding path program 10 times [2024-06-21 19:24:07,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:24:07,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107383644] [2024-06-21 19:24:07,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:24:07,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:24:07,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:24:09,281 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 19:24:09,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:24:09,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107383644] [2024-06-21 19:24:09,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107383644] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:24:09,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:24:09,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:24:09,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460100494] [2024-06-21 19:24:09,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:24:09,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:24:09,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:24:09,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:24:09,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:24:09,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:24:09,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 263 transitions, 2658 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 19:24:09,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:24:09,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:24:09,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:24:09,852 INFO L124 PetriNetUnfolderBase]: 654/1258 cut-off events. [2024-06-21 19:24:09,852 INFO L125 PetriNetUnfolderBase]: For 268826/268826 co-relation queries the response was YES. [2024-06-21 19:24:09,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10788 conditions, 1258 events. 654/1258 cut-off events. For 268826/268826 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 7083 event pairs, 116 based on Foata normal form. 6/1264 useless extension candidates. Maximal degree in co-relation 10655. Up to 1122 conditions per place. [2024-06-21 19:24:09,865 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 245 selfloop transitions, 8 changer transitions 25/280 dead transitions. [2024-06-21 19:24:09,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 280 transitions, 3280 flow [2024-06-21 19:24:09,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:24:09,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:24:09,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-21 19:24:09,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32903225806451614 [2024-06-21 19:24:09,866 INFO L175 Difference]: Start difference. First operand has 365 places, 263 transitions, 2658 flow. Second operand 10 states and 102 transitions. [2024-06-21 19:24:09,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 280 transitions, 3280 flow [2024-06-21 19:24:10,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 280 transitions, 3233 flow, removed 3 selfloop flow, removed 13 redundant places. [2024-06-21 19:24:10,718 INFO L231 Difference]: Finished difference. Result has 348 places, 250 transitions, 2544 flow [2024-06-21 19:24:10,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2611, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2544, PETRI_PLACES=348, PETRI_TRANSITIONS=250} [2024-06-21 19:24:10,718 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 318 predicate places. [2024-06-21 19:24:10,718 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 250 transitions, 2544 flow [2024-06-21 19:24:10,718 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 19:24:10,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:24:10,718 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 19:24:10,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2024-06-21 19:24:10,718 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 19:24:10,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:24:10,719 INFO L85 PathProgramCache]: Analyzing trace with hash -521935848, now seen corresponding path program 3 times [2024-06-21 19:24:10,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:24:10,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547283417] [2024-06-21 19:24:10,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:24:10,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:24:10,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:24:12,639 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 19:24:12,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:24:12,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547283417] [2024-06-21 19:24:12,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547283417] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:24:12,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:24:12,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:24:12,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393709282] [2024-06-21 19:24:12,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:24:12,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:24:12,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:24:12,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:24:12,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:24:12,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:24:12,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 250 transitions, 2544 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 19:24:12,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:24:12,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:24:12,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:24:13,085 INFO L124 PetriNetUnfolderBase]: 600/1148 cut-off events. [2024-06-21 19:24:13,085 INFO L125 PetriNetUnfolderBase]: For 230487/230487 co-relation queries the response was YES. [2024-06-21 19:24:13,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9461 conditions, 1148 events. 600/1148 cut-off events. For 230487/230487 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 6303 event pairs, 108 based on Foata normal form. 8/1156 useless extension candidates. Maximal degree in co-relation 9330. Up to 1051 conditions per place. [2024-06-21 19:24:13,098 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 228 selfloop transitions, 2 changer transitions 33/265 dead transitions. [2024-06-21 19:24:13,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 265 transitions, 3162 flow [2024-06-21 19:24:13,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:24:13,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:24:13,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-21 19:24:13,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3343108504398827 [2024-06-21 19:24:13,099 INFO L175 Difference]: Start difference. First operand has 348 places, 250 transitions, 2544 flow. Second operand 11 states and 114 transitions. [2024-06-21 19:24:13,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 265 transitions, 3162 flow [2024-06-21 19:24:13,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 265 transitions, 3128 flow, removed 5 selfloop flow, removed 13 redundant places. [2024-06-21 19:24:13,900 INFO L231 Difference]: Finished difference. Result has 330 places, 231 transitions, 2365 flow [2024-06-21 19:24:13,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2510, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2365, PETRI_PLACES=330, PETRI_TRANSITIONS=231} [2024-06-21 19:24:13,901 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 300 predicate places. [2024-06-21 19:24:13,901 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 231 transitions, 2365 flow [2024-06-21 19:24:13,901 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 19:24:13,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:24:13,901 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 19:24:13,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2024-06-21 19:24:13,901 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 19:24:13,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:24:13,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1023116580, now seen corresponding path program 4 times [2024-06-21 19:24:13,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:24:13,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026026417] [2024-06-21 19:24:13,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:24:13,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:24:13,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:24:16,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:24:16,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:24:16,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026026417] [2024-06-21 19:24:16,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026026417] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:24:16,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:24:16,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:24:16,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302662807] [2024-06-21 19:24:16,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:24:16,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:24:16,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:24:16,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:24:16,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:24:16,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:24:16,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 231 transitions, 2365 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 19:24:16,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:24:16,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:24:16,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:24:16,600 INFO L124 PetriNetUnfolderBase]: 579/1102 cut-off events. [2024-06-21 19:24:16,600 INFO L125 PetriNetUnfolderBase]: For 237540/237540 co-relation queries the response was YES. [2024-06-21 19:24:16,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8892 conditions, 1102 events. 579/1102 cut-off events. For 237540/237540 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 6069 event pairs, 111 based on Foata normal form. 16/1118 useless extension candidates. Maximal degree in co-relation 8765. Up to 791 conditions per place. [2024-06-21 19:24:16,612 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 155 selfloop transitions, 64 changer transitions 22/243 dead transitions. [2024-06-21 19:24:16,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 243 transitions, 2931 flow [2024-06-21 19:24:16,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:24:16,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:24:16,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-21 19:24:16,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3782991202346041 [2024-06-21 19:24:16,614 INFO L175 Difference]: Start difference. First operand has 330 places, 231 transitions, 2365 flow. Second operand 11 states and 129 transitions. [2024-06-21 19:24:16,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 243 transitions, 2931 flow [2024-06-21 19:24:17,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 243 transitions, 2879 flow, removed 22 selfloop flow, removed 15 redundant places. [2024-06-21 19:24:17,246 INFO L231 Difference]: Finished difference. Result has 301 places, 212 transitions, 2239 flow [2024-06-21 19:24:17,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2325, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2239, PETRI_PLACES=301, PETRI_TRANSITIONS=212} [2024-06-21 19:24:17,246 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 271 predicate places. [2024-06-21 19:24:17,247 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 212 transitions, 2239 flow [2024-06-21 19:24:17,247 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 19:24:17,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:24:17,247 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 19:24:17,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2024-06-21 19:24:17,247 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 19:24:17,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:24:17,247 INFO L85 PathProgramCache]: Analyzing trace with hash -108280860, now seen corresponding path program 11 times [2024-06-21 19:24:17,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:24:17,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440774057] [2024-06-21 19:24:17,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:24:17,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:24:17,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:24:19,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:24:19,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:24:19,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440774057] [2024-06-21 19:24:19,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440774057] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:24:19,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:24:19,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:24:19,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130339473] [2024-06-21 19:24:19,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:24:19,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:24:19,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:24:19,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:24:19,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:24:19,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:24:19,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 212 transitions, 2239 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 19:24:19,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:24:19,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:24:19,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:24:19,486 INFO L124 PetriNetUnfolderBase]: 533/1032 cut-off events. [2024-06-21 19:24:19,487 INFO L125 PetriNetUnfolderBase]: For 180096/180096 co-relation queries the response was YES. [2024-06-21 19:24:19,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8001 conditions, 1032 events. 533/1032 cut-off events. For 180096/180096 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 5705 event pairs, 101 based on Foata normal form. 12/1044 useless extension candidates. Maximal degree in co-relation 7884. Up to 760 conditions per place. [2024-06-21 19:24:19,497 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 147 selfloop transitions, 51 changer transitions 24/224 dead transitions. [2024-06-21 19:24:19,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 224 transitions, 2731 flow [2024-06-21 19:24:19,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:24:19,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:24:19,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-21 19:24:19,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-21 19:24:19,498 INFO L175 Difference]: Start difference. First operand has 301 places, 212 transitions, 2239 flow. Second operand 11 states and 124 transitions. [2024-06-21 19:24:19,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 224 transitions, 2731 flow [2024-06-21 19:24:19,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 224 transitions, 2519 flow, removed 7 selfloop flow, removed 18 redundant places. [2024-06-21 19:24:19,924 INFO L231 Difference]: Finished difference. Result has 293 places, 194 transitions, 2008 flow [2024-06-21 19:24:19,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2029, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2008, PETRI_PLACES=293, PETRI_TRANSITIONS=194} [2024-06-21 19:24:19,924 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 263 predicate places. [2024-06-21 19:24:19,925 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 194 transitions, 2008 flow [2024-06-21 19:24:19,925 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 19:24:19,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:24:19,925 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 19:24:19,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2024-06-21 19:24:19,925 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 19:24:19,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:24:19,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1760887372, now seen corresponding path program 5 times [2024-06-21 19:24:19,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:24:19,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511200792] [2024-06-21 19:24:19,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:24:19,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:24:19,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:24:21,807 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 19:24:21,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:24:21,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511200792] [2024-06-21 19:24:21,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511200792] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:24:21,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:24:21,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:24:21,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756124684] [2024-06-21 19:24:21,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:24:21,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:24:21,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:24:21,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:24:21,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:24:21,926 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-21 19:24:21,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 194 transitions, 2008 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 19:24:21,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:24:21,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-21 19:24:21,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:24:22,204 INFO L124 PetriNetUnfolderBase]: 502/975 cut-off events. [2024-06-21 19:24:22,204 INFO L125 PetriNetUnfolderBase]: For 172677/172677 co-relation queries the response was YES. [2024-06-21 19:24:22,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8021 conditions, 975 events. 502/975 cut-off events. For 172677/172677 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 5272 event pairs, 112 based on Foata normal form. 6/981 useless extension candidates. Maximal degree in co-relation 7909. Up to 706 conditions per place. [2024-06-21 19:24:22,212 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 148 selfloop transitions, 53 changer transitions 7/211 dead transitions. [2024-06-21 19:24:22,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 211 transitions, 2692 flow [2024-06-21 19:24:22,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:24:22,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:24:22,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-21 19:24:22,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41642228739002934 [2024-06-21 19:24:22,213 INFO L175 Difference]: Start difference. First operand has 293 places, 194 transitions, 2008 flow. Second operand 11 states and 142 transitions. [2024-06-21 19:24:22,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 211 transitions, 2692 flow [2024-06-21 19:24:22,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 211 transitions, 2522 flow, removed 18 selfloop flow, removed 21 redundant places. [2024-06-21 19:24:22,628 INFO L231 Difference]: Finished difference. Result has 272 places, 191 transitions, 1944 flow [2024-06-21 19:24:22,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1856, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1944, PETRI_PLACES=272, PETRI_TRANSITIONS=191} [2024-06-21 19:24:22,628 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 242 predicate places. [2024-06-21 19:24:22,628 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 191 transitions, 1944 flow [2024-06-21 19:24:22,629 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 19:24:22,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:24:22,629 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 19:24:22,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2024-06-21 19:24:22,629 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 19:24:22,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:24:22,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1461351392, now seen corresponding path program 6 times [2024-06-21 19:24:22,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:24:22,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252059263] [2024-06-21 19:24:22,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:24:22,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:24:22,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:24:24,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:24:24,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:24:24,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252059263] [2024-06-21 19:24:24,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252059263] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:24:24,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:24:24,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 19:24:24,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574375957] [2024-06-21 19:24:24,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:24:24,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 19:24:24,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:24:24,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 19:24:24,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-21 19:24:24,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:24:24,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 191 transitions, 1944 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 19:24:24,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:24:24,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:24:24,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:24:25,130 INFO L124 PetriNetUnfolderBase]: 514/1003 cut-off events. [2024-06-21 19:24:25,130 INFO L125 PetriNetUnfolderBase]: For 164071/164071 co-relation queries the response was YES. [2024-06-21 19:24:25,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8398 conditions, 1003 events. 514/1003 cut-off events. For 164071/164071 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 5496 event pairs, 122 based on Foata normal form. 6/1009 useless extension candidates. Maximal degree in co-relation 8295. Up to 796 conditions per place. [2024-06-21 19:24:25,138 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 155 selfloop transitions, 44 changer transitions 7/208 dead transitions. [2024-06-21 19:24:25,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 208 transitions, 2608 flow [2024-06-21 19:24:25,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:24:25,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:24:25,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-21 19:24:25,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3812316715542522 [2024-06-21 19:24:25,139 INFO L175 Difference]: Start difference. First operand has 272 places, 191 transitions, 1944 flow. Second operand 11 states and 130 transitions. [2024-06-21 19:24:25,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 208 transitions, 2608 flow [2024-06-21 19:24:25,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 208 transitions, 2493 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-21 19:24:25,489 INFO L231 Difference]: Finished difference. Result has 269 places, 188 transitions, 1902 flow [2024-06-21 19:24:25,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1835, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1902, PETRI_PLACES=269, PETRI_TRANSITIONS=188} [2024-06-21 19:24:25,490 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 239 predicate places. [2024-06-21 19:24:25,490 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 188 transitions, 1902 flow [2024-06-21 19:24:25,490 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 19:24:25,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:24:25,490 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 19:24:25,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2024-06-21 19:24:25,491 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 19:24:25,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:24:25,491 INFO L85 PathProgramCache]: Analyzing trace with hash -114709950, now seen corresponding path program 12 times [2024-06-21 19:24:25,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:24:25,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206082209] [2024-06-21 19:24:25,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:24:25,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:24:25,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:24:27,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:24:27,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:24:27,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206082209] [2024-06-21 19:24:27,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206082209] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:24:27,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:24:27,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 19:24:27,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721015512] [2024-06-21 19:24:27,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:24:27,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 19:24:27,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:24:27,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 19:24:27,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-21 19:24:27,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:24:27,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 188 transitions, 1902 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 19:24:27,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:24:27,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:24:27,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:24:28,126 INFO L124 PetriNetUnfolderBase]: 503/982 cut-off events. [2024-06-21 19:24:28,126 INFO L125 PetriNetUnfolderBase]: For 155306/155306 co-relation queries the response was YES. [2024-06-21 19:24:28,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8202 conditions, 982 events. 503/982 cut-off events. For 155306/155306 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 5340 event pairs, 120 based on Foata normal form. 6/988 useless extension candidates. Maximal degree in co-relation 8101. Up to 782 conditions per place. [2024-06-21 19:24:28,135 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 134 selfloop transitions, 51 changer transitions 15/202 dead transitions. [2024-06-21 19:24:28,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 202 transitions, 2352 flow [2024-06-21 19:24:28,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:24:28,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:24:28,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-21 19:24:28,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34946236559139787 [2024-06-21 19:24:28,136 INFO L175 Difference]: Start difference. First operand has 269 places, 188 transitions, 1902 flow. Second operand 12 states and 130 transitions. [2024-06-21 19:24:28,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 202 transitions, 2352 flow [2024-06-21 19:24:28,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 202 transitions, 2263 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-21 19:24:28,472 INFO L231 Difference]: Finished difference. Result has 269 places, 182 transitions, 1872 flow [2024-06-21 19:24:28,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1813, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1872, PETRI_PLACES=269, PETRI_TRANSITIONS=182} [2024-06-21 19:24:28,472 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 239 predicate places. [2024-06-21 19:24:28,472 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 182 transitions, 1872 flow [2024-06-21 19:24:28,472 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 19:24:28,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:24:28,473 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 19:24:28,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2024-06-21 19:24:28,473 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 19:24:28,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:24:28,473 INFO L85 PathProgramCache]: Analyzing trace with hash -285412380, now seen corresponding path program 13 times [2024-06-21 19:24:28,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:24:28,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706382764] [2024-06-21 19:24:28,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:24:28,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:24:28,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:24:31,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:24:31,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:24:31,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706382764] [2024-06-21 19:24:31,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706382764] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:24:31,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:24:31,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 19:24:31,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480226816] [2024-06-21 19:24:31,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:24:31,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 19:24:31,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:24:31,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 19:24:31,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-21 19:24:32,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:24:32,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 182 transitions, 1872 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 19:24:32,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:24:32,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:24:32,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:24:32,496 INFO L124 PetriNetUnfolderBase]: 502/983 cut-off events. [2024-06-21 19:24:32,496 INFO L125 PetriNetUnfolderBase]: For 151205/151205 co-relation queries the response was YES. [2024-06-21 19:24:32,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8166 conditions, 983 events. 502/983 cut-off events. For 151205/151205 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 5373 event pairs, 120 based on Foata normal form. 6/989 useless extension candidates. Maximal degree in co-relation 8066. Up to 797 conditions per place. [2024-06-21 19:24:32,504 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 148 selfloop transitions, 37 changer transitions 14/201 dead transitions. [2024-06-21 19:24:32,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 201 transitions, 2350 flow [2024-06-21 19:24:32,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:24:32,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:24:32,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-21 19:24:32,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-21 19:24:32,505 INFO L175 Difference]: Start difference. First operand has 269 places, 182 transitions, 1872 flow. Second operand 12 states and 132 transitions. [2024-06-21 19:24:32,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 201 transitions, 2350 flow [2024-06-21 19:24:32,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 201 transitions, 2217 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-21 19:24:32,836 INFO L231 Difference]: Finished difference. Result has 264 places, 180 transitions, 1818 flow [2024-06-21 19:24:32,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1744, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1818, PETRI_PLACES=264, PETRI_TRANSITIONS=180} [2024-06-21 19:24:32,837 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 234 predicate places. [2024-06-21 19:24:32,837 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 180 transitions, 1818 flow [2024-06-21 19:24:32,837 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 19:24:32,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:24:32,837 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 19:24:32,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2024-06-21 19:24:32,837 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 19:24:32,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:24:32,839 INFO L85 PathProgramCache]: Analyzing trace with hash -284817734, now seen corresponding path program 14 times [2024-06-21 19:24:32,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:24:32,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896703286] [2024-06-21 19:24:32,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:24:32,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:24:32,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:24:34,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:24:34,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:24:34,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896703286] [2024-06-21 19:24:34,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896703286] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:24:34,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:24:34,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:24:34,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998313964] [2024-06-21 19:24:34,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:24:34,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:24:34,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:24:34,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:24:34,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:24:34,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:24:34,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 180 transitions, 1818 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 19:24:34,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:24:34,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:24:34,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:24:35,495 INFO L124 PetriNetUnfolderBase]: 486/951 cut-off events. [2024-06-21 19:24:35,495 INFO L125 PetriNetUnfolderBase]: For 138991/138991 co-relation queries the response was YES. [2024-06-21 19:24:35,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7897 conditions, 951 events. 486/951 cut-off events. For 138991/138991 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 5159 event pairs, 116 based on Foata normal form. 6/957 useless extension candidates. Maximal degree in co-relation 7796. Up to 728 conditions per place. [2024-06-21 19:24:35,501 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 137 selfloop transitions, 42 changer transitions 13/194 dead transitions. [2024-06-21 19:24:35,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 194 transitions, 2252 flow [2024-06-21 19:24:35,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:24:35,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:24:35,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-06-21 19:24:35,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3313782991202346 [2024-06-21 19:24:35,502 INFO L175 Difference]: Start difference. First operand has 264 places, 180 transitions, 1818 flow. Second operand 11 states and 113 transitions. [2024-06-21 19:24:35,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 194 transitions, 2252 flow [2024-06-21 19:24:35,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 194 transitions, 2138 flow, removed 5 selfloop flow, removed 14 redundant places. [2024-06-21 19:24:35,801 INFO L231 Difference]: Finished difference. Result has 257 places, 175 transitions, 1758 flow [2024-06-21 19:24:35,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1704, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1758, PETRI_PLACES=257, PETRI_TRANSITIONS=175} [2024-06-21 19:24:35,802 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 227 predicate places. [2024-06-21 19:24:35,802 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 175 transitions, 1758 flow [2024-06-21 19:24:35,802 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 19:24:35,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:24:35,802 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 19:24:35,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2024-06-21 19:24:35,803 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 19:24:35,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:24:35,803 INFO L85 PathProgramCache]: Analyzing trace with hash 555928898, now seen corresponding path program 15 times [2024-06-21 19:24:35,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:24:35,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78017765] [2024-06-21 19:24:35,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:24:35,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:24:35,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:24:37,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:24:37,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:24:37,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78017765] [2024-06-21 19:24:37,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78017765] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:24:37,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:24:37,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:24:37,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637200538] [2024-06-21 19:24:37,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:24:37,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:24:37,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:24:37,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:24:37,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:24:37,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:24:37,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 175 transitions, 1758 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 19:24:37,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:24:38,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:24:38,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:24:38,432 INFO L124 PetriNetUnfolderBase]: 456/889 cut-off events. [2024-06-21 19:24:38,432 INFO L125 PetriNetUnfolderBase]: For 124924/124924 co-relation queries the response was YES. [2024-06-21 19:24:38,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7227 conditions, 889 events. 456/889 cut-off events. For 124924/124924 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4715 event pairs, 99 based on Foata normal form. 6/895 useless extension candidates. Maximal degree in co-relation 7130. Up to 687 conditions per place. [2024-06-21 19:24:38,439 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 126 selfloop transitions, 39 changer transitions 21/188 dead transitions. [2024-06-21 19:24:38,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 188 transitions, 2178 flow [2024-06-21 19:24:38,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:24:38,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:24:38,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 111 transitions. [2024-06-21 19:24:38,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3255131964809384 [2024-06-21 19:24:38,440 INFO L175 Difference]: Start difference. First operand has 257 places, 175 transitions, 1758 flow. Second operand 11 states and 111 transitions. [2024-06-21 19:24:38,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 188 transitions, 2178 flow [2024-06-21 19:24:38,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 188 transitions, 2053 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-21 19:24:38,668 INFO L231 Difference]: Finished difference. Result has 249 places, 162 transitions, 1611 flow [2024-06-21 19:24:38,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1633, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1611, PETRI_PLACES=249, PETRI_TRANSITIONS=162} [2024-06-21 19:24:38,668 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 219 predicate places. [2024-06-21 19:24:38,668 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 162 transitions, 1611 flow [2024-06-21 19:24:38,668 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 19:24:38,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:24:38,668 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 19:24:38,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2024-06-21 19:24:38,668 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 19:24:38,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:24:38,669 INFO L85 PathProgramCache]: Analyzing trace with hash -395640254, now seen corresponding path program 16 times [2024-06-21 19:24:38,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:24:38,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703629521] [2024-06-21 19:24:38,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:24:38,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:24:38,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:24:41,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:24:41,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:24:41,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703629521] [2024-06-21 19:24:41,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703629521] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:24:41,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:24:41,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 19:24:41,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102561373] [2024-06-21 19:24:41,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:24:41,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 19:24:41,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:24:41,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 19:24:41,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-06-21 19:24:41,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:24:41,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 162 transitions, 1611 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 19:24:41,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:24:41,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:24:41,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:24:41,780 INFO L124 PetriNetUnfolderBase]: 413/800 cut-off events. [2024-06-21 19:24:41,780 INFO L125 PetriNetUnfolderBase]: For 104438/104438 co-relation queries the response was YES. [2024-06-21 19:24:41,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6358 conditions, 800 events. 413/800 cut-off events. For 104438/104438 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4044 event pairs, 73 based on Foata normal form. 6/806 useless extension candidates. Maximal degree in co-relation 6264. Up to 538 conditions per place. [2024-06-21 19:24:41,786 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 99 selfloop transitions, 61 changer transitions 17/179 dead transitions. [2024-06-21 19:24:41,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 179 transitions, 2021 flow [2024-06-21 19:24:41,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 19:24:41,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 19:24:41,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 136 transitions. [2024-06-21 19:24:41,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.337468982630273 [2024-06-21 19:24:41,787 INFO L175 Difference]: Start difference. First operand has 249 places, 162 transitions, 1611 flow. Second operand 13 states and 136 transitions. [2024-06-21 19:24:41,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 179 transitions, 2021 flow [2024-06-21 19:24:41,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 179 transitions, 1888 flow, removed 7 selfloop flow, removed 20 redundant places. [2024-06-21 19:24:41,971 INFO L231 Difference]: Finished difference. Result has 229 places, 155 transitions, 1567 flow [2024-06-21 19:24:41,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1478, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1567, PETRI_PLACES=229, PETRI_TRANSITIONS=155} [2024-06-21 19:24:41,972 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 199 predicate places. [2024-06-21 19:24:41,972 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 155 transitions, 1567 flow [2024-06-21 19:24:41,972 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 19:24:41,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:24:41,972 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:24:41,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2024-06-21 19:24:41,972 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 19:24:41,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:24:41,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1619286736, now seen corresponding path program 7 times [2024-06-21 19:24:41,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:24:41,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720822227] [2024-06-21 19:24:41,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:24:41,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:24:41,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:24:43,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:24:43,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:24:43,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720822227] [2024-06-21 19:24:43,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720822227] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:24:43,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:24:43,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:24:43,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340404519] [2024-06-21 19:24:43,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:24:43,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:24:43,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:24:43,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:24:43,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:24:43,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-21 19:24:43,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 155 transitions, 1567 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 19:24:43,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:24:43,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-21 19:24:43,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:24:44,087 INFO L124 PetriNetUnfolderBase]: 375/722 cut-off events. [2024-06-21 19:24:44,087 INFO L125 PetriNetUnfolderBase]: For 76075/76075 co-relation queries the response was YES. [2024-06-21 19:24:44,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5384 conditions, 722 events. 375/722 cut-off events. For 76075/76075 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 3566 event pairs, 74 based on Foata normal form. 8/730 useless extension candidates. Maximal degree in co-relation 5297. Up to 551 conditions per place. [2024-06-21 19:24:44,093 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 111 selfloop transitions, 33 changer transitions 21/168 dead transitions. [2024-06-21 19:24:44,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 168 transitions, 1967 flow [2024-06-21 19:24:44,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:24:44,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:24:44,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-21 19:24:44,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375366568914956 [2024-06-21 19:24:44,094 INFO L175 Difference]: Start difference. First operand has 229 places, 155 transitions, 1567 flow. Second operand 11 states and 128 transitions. [2024-06-21 19:24:44,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 168 transitions, 1967 flow [2024-06-21 19:24:44,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 168 transitions, 1782 flow, removed 4 selfloop flow, removed 21 redundant places. [2024-06-21 19:24:44,243 INFO L231 Difference]: Finished difference. Result has 212 places, 144 transitions, 1378 flow [2024-06-21 19:24:44,243 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1382, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1378, PETRI_PLACES=212, PETRI_TRANSITIONS=144} [2024-06-21 19:24:44,243 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 182 predicate places. [2024-06-21 19:24:44,244 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 144 transitions, 1378 flow [2024-06-21 19:24:44,244 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 19:24:44,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:24:44,244 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 19:24:44,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2024-06-21 19:24:44,244 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 19:24:44,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:24:44,244 INFO L85 PathProgramCache]: Analyzing trace with hash -275027432, now seen corresponding path program 17 times [2024-06-21 19:24:44,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:24:44,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467290060] [2024-06-21 19:24:44,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:24:44,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:24:44,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:24:46,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:24:46,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:24:46,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467290060] [2024-06-21 19:24:46,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467290060] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:24:46,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:24:46,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:24:46,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803365544] [2024-06-21 19:24:46,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:24:46,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:24:46,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:24:46,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:24:46,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:24:46,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:24:46,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 144 transitions, 1378 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 19:24:46,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:24:46,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:24:46,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:24:46,460 INFO L124 PetriNetUnfolderBase]: 354/679 cut-off events. [2024-06-21 19:24:46,461 INFO L125 PetriNetUnfolderBase]: For 65181/65181 co-relation queries the response was YES. [2024-06-21 19:24:46,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4989 conditions, 679 events. 354/679 cut-off events. For 65181/65181 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3309 event pairs, 66 based on Foata normal form. 6/685 useless extension candidates. Maximal degree in co-relation 4905. Up to 531 conditions per place. [2024-06-21 19:24:46,466 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 106 selfloop transitions, 38 changer transitions 10/156 dead transitions. [2024-06-21 19:24:46,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 156 transitions, 1732 flow [2024-06-21 19:24:46,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:24:46,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:24:46,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-21 19:24:46,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36129032258064514 [2024-06-21 19:24:46,467 INFO L175 Difference]: Start difference. First operand has 212 places, 144 transitions, 1378 flow. Second operand 10 states and 112 transitions. [2024-06-21 19:24:46,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 156 transitions, 1732 flow [2024-06-21 19:24:46,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 156 transitions, 1617 flow, removed 15 selfloop flow, removed 15 redundant places. [2024-06-21 19:24:46,577 INFO L231 Difference]: Finished difference. Result has 191 places, 140 transitions, 1321 flow [2024-06-21 19:24:46,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1269, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1321, PETRI_PLACES=191, PETRI_TRANSITIONS=140} [2024-06-21 19:24:46,578 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 161 predicate places. [2024-06-21 19:24:46,578 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 140 transitions, 1321 flow [2024-06-21 19:24:46,578 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 19:24:46,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:24:46,578 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 19:24:46,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2024-06-21 19:24:46,578 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 19:24:46,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:24:46,578 INFO L85 PathProgramCache]: Analyzing trace with hash -268764812, now seen corresponding path program 18 times [2024-06-21 19:24:46,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:24:46,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145889631] [2024-06-21 19:24:46,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:24:46,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:24:46,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:24:48,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:24:48,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:24:48,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145889631] [2024-06-21 19:24:48,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145889631] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:24:48,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:24:48,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:24:48,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061399222] [2024-06-21 19:24:48,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:24:48,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:24:48,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:24:48,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:24:48,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:24:48,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:24:48,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 140 transitions, 1321 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 19:24:48,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:24:48,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:24:48,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:24:49,005 INFO L124 PetriNetUnfolderBase]: 336/649 cut-off events. [2024-06-21 19:24:49,005 INFO L125 PetriNetUnfolderBase]: For 57712/57712 co-relation queries the response was YES. [2024-06-21 19:24:49,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4145 conditions, 649 events. 336/649 cut-off events. For 57712/57712 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3161 event pairs, 64 based on Foata normal form. 16/665 useless extension candidates. Maximal degree in co-relation 4067. Up to 454 conditions per place. [2024-06-21 19:24:49,009 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 94 selfloop transitions, 32 changer transitions 24/152 dead transitions. [2024-06-21 19:24:49,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 152 transitions, 1677 flow [2024-06-21 19:24:49,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:24:49,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:24:49,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-21 19:24:49,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3519061583577713 [2024-06-21 19:24:49,011 INFO L175 Difference]: Start difference. First operand has 191 places, 140 transitions, 1321 flow. Second operand 11 states and 120 transitions. [2024-06-21 19:24:49,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 152 transitions, 1677 flow [2024-06-21 19:24:49,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 152 transitions, 1595 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-21 19:24:49,090 INFO L231 Difference]: Finished difference. Result has 188 places, 123 transitions, 1162 flow [2024-06-21 19:24:49,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1239, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1162, PETRI_PLACES=188, PETRI_TRANSITIONS=123} [2024-06-21 19:24:49,090 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 158 predicate places. [2024-06-21 19:24:49,090 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 123 transitions, 1162 flow [2024-06-21 19:24:49,090 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 19:24:49,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:24:49,091 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 19:24:49,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2024-06-21 19:24:49,091 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 19:24:49,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:24:49,091 INFO L85 PathProgramCache]: Analyzing trace with hash -275200412, now seen corresponding path program 19 times [2024-06-21 19:24:49,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:24:49,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804941284] [2024-06-21 19:24:49,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:24:49,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:24:49,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:24:51,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:24:51,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:24:51,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804941284] [2024-06-21 19:24:51,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804941284] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:24:51,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:24:51,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 19:24:51,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409801439] [2024-06-21 19:24:51,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:24:51,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 19:24:51,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:24:51,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 19:24:51,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-21 19:24:51,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:24:51,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 123 transitions, 1162 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 19:24:51,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:24:51,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:24:51,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:24:51,614 INFO L124 PetriNetUnfolderBase]: 292/565 cut-off events. [2024-06-21 19:24:51,615 INFO L125 PetriNetUnfolderBase]: For 39982/39982 co-relation queries the response was YES. [2024-06-21 19:24:51,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3698 conditions, 565 events. 292/565 cut-off events. For 39982/39982 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 2616 event pairs, 48 based on Foata normal form. 6/571 useless extension candidates. Maximal degree in co-relation 3622. Up to 430 conditions per place. [2024-06-21 19:24:51,618 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 91 selfloop transitions, 32 changer transitions 12/137 dead transitions. [2024-06-21 19:24:51,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 137 transitions, 1476 flow [2024-06-21 19:24:51,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:24:51,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:24:51,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 124 transitions. [2024-06-21 19:24:51,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-21 19:24:51,619 INFO L175 Difference]: Start difference. First operand has 188 places, 123 transitions, 1162 flow. Second operand 12 states and 124 transitions. [2024-06-21 19:24:51,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 137 transitions, 1476 flow [2024-06-21 19:24:51,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 137 transitions, 1362 flow, removed 9 selfloop flow, removed 15 redundant places. [2024-06-21 19:24:51,688 INFO L231 Difference]: Finished difference. Result has 172 places, 117 transitions, 1080 flow [2024-06-21 19:24:51,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1050, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1080, PETRI_PLACES=172, PETRI_TRANSITIONS=117} [2024-06-21 19:24:51,689 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 142 predicate places. [2024-06-21 19:24:51,689 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 117 transitions, 1080 flow [2024-06-21 19:24:51,689 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 19:24:51,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:24:51,689 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 19:24:51,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2024-06-21 19:24:51,689 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 19:24:51,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:24:51,689 INFO L85 PathProgramCache]: Analyzing trace with hash 734323644, now seen corresponding path program 8 times [2024-06-21 19:24:51,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:24:51,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673782199] [2024-06-21 19:24:51,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:24:51,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:24:51,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:24:54,200 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 19:24:54,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:24:54,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673782199] [2024-06-21 19:24:54,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673782199] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:24:54,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:24:54,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 19:24:54,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150457010] [2024-06-21 19:24:54,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:24:54,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 19:24:54,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:24:54,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 19:24:54,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2024-06-21 19:24:54,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:24:54,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 117 transitions, 1080 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 19:24:54,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:24:54,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:24:54,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:24:54,719 INFO L124 PetriNetUnfolderBase]: 287/554 cut-off events. [2024-06-21 19:24:54,719 INFO L125 PetriNetUnfolderBase]: For 35221/35221 co-relation queries the response was YES. [2024-06-21 19:24:54,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3491 conditions, 554 events. 287/554 cut-off events. For 35221/35221 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 2541 event pairs, 58 based on Foata normal form. 8/562 useless extension candidates. Maximal degree in co-relation 3420. Up to 410 conditions per place. [2024-06-21 19:24:54,723 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 80 selfloop transitions, 32 changer transitions 18/132 dead transitions. [2024-06-21 19:24:54,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 132 transitions, 1402 flow [2024-06-21 19:24:54,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:24:54,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:24:54,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 128 transitions. [2024-06-21 19:24:54,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-21 19:24:54,724 INFO L175 Difference]: Start difference. First operand has 172 places, 117 transitions, 1080 flow. Second operand 12 states and 128 transitions. [2024-06-21 19:24:54,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 132 transitions, 1402 flow [2024-06-21 19:24:54,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 132 transitions, 1328 flow, removed 5 selfloop flow, removed 14 redundant places. [2024-06-21 19:24:54,780 INFO L231 Difference]: Finished difference. Result has 163 places, 107 transitions, 950 flow [2024-06-21 19:24:54,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1006, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=950, PETRI_PLACES=163, PETRI_TRANSITIONS=107} [2024-06-21 19:24:54,781 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 133 predicate places. [2024-06-21 19:24:54,781 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 107 transitions, 950 flow [2024-06-21 19:24:54,781 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 19:24:54,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:24:54,781 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 19:24:54,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2024-06-21 19:24:54,781 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 19:24:54,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:24:54,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1661247124, now seen corresponding path program 20 times [2024-06-21 19:24:54,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:24:54,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426867779] [2024-06-21 19:24:54,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:24:54,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:24:54,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:24:57,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:24:57,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:24:57,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426867779] [2024-06-21 19:24:57,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426867779] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:24:57,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:24:57,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 19:24:57,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800570350] [2024-06-21 19:24:57,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:24:57,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 19:24:57,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:24:57,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 19:24:57,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2024-06-21 19:24:57,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:24:57,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 107 transitions, 950 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 19:24:57,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:24:57,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:24:57,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:24:57,907 INFO L124 PetriNetUnfolderBase]: 261/512 cut-off events. [2024-06-21 19:24:57,908 INFO L125 PetriNetUnfolderBase]: For 27466/27466 co-relation queries the response was YES. [2024-06-21 19:24:57,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3157 conditions, 512 events. 261/512 cut-off events. For 27466/27466 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2332 event pairs, 50 based on Foata normal form. 6/518 useless extension candidates. Maximal degree in co-relation 3090. Up to 398 conditions per place. [2024-06-21 19:24:57,910 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 77 selfloop transitions, 28 changer transitions 13/120 dead transitions. [2024-06-21 19:24:57,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 120 transitions, 1226 flow [2024-06-21 19:24:57,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:24:57,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:24:57,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 124 transitions. [2024-06-21 19:24:57,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-21 19:24:57,912 INFO L175 Difference]: Start difference. First operand has 163 places, 107 transitions, 950 flow. Second operand 12 states and 124 transitions. [2024-06-21 19:24:57,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 120 transitions, 1226 flow [2024-06-21 19:24:57,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 120 transitions, 1133 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-21 19:24:57,968 INFO L231 Difference]: Finished difference. Result has 161 places, 101 transitions, 873 flow [2024-06-21 19:24:57,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=857, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=873, PETRI_PLACES=161, PETRI_TRANSITIONS=101} [2024-06-21 19:24:57,968 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 131 predicate places. [2024-06-21 19:24:57,968 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 101 transitions, 873 flow [2024-06-21 19:24:57,968 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 19:24:57,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:24:57,969 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 19:24:57,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2024-06-21 19:24:57,969 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 19:24:57,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:24:57,969 INFO L85 PathProgramCache]: Analyzing trace with hash -2044358914, now seen corresponding path program 9 times [2024-06-21 19:24:57,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:24:57,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175497364] [2024-06-21 19:24:57,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:24:57,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:24:57,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:25:00,002 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 19:25:00,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:25:00,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175497364] [2024-06-21 19:25:00,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175497364] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:25:00,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:25:00,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 19:25:00,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421326971] [2024-06-21 19:25:00,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:25:00,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 19:25:00,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:25:00,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 19:25:00,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-21 19:25:00,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:25:00,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 101 transitions, 873 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 19:25:00,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:25:00,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:25:00,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:25:00,533 INFO L124 PetriNetUnfolderBase]: 250/491 cut-off events. [2024-06-21 19:25:00,533 INFO L125 PetriNetUnfolderBase]: For 27501/27501 co-relation queries the response was YES. [2024-06-21 19:25:00,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3051 conditions, 491 events. 250/491 cut-off events. For 27501/27501 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2203 event pairs, 46 based on Foata normal form. 6/497 useless extension candidates. Maximal degree in co-relation 2984. Up to 334 conditions per place. [2024-06-21 19:25:00,535 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 84 selfloop transitions, 26 changer transitions 7/119 dead transitions. [2024-06-21 19:25:00,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 119 transitions, 1271 flow [2024-06-21 19:25:00,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 19:25:00,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 19:25:00,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 124 transitions. [2024-06-21 19:25:00,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3076923076923077 [2024-06-21 19:25:00,536 INFO L175 Difference]: Start difference. First operand has 161 places, 101 transitions, 873 flow. Second operand 13 states and 124 transitions. [2024-06-21 19:25:00,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 119 transitions, 1271 flow [2024-06-21 19:25:00,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 119 transitions, 1203 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-21 19:25:00,583 INFO L231 Difference]: Finished difference. Result has 157 places, 98 transitions, 845 flow [2024-06-21 19:25:00,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=811, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=845, PETRI_PLACES=157, PETRI_TRANSITIONS=98} [2024-06-21 19:25:00,584 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 127 predicate places. [2024-06-21 19:25:00,584 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 98 transitions, 845 flow [2024-06-21 19:25:00,584 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 19:25:00,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:25:00,584 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 19:25:00,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232 [2024-06-21 19:25:00,585 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 19:25:00,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:25:00,585 INFO L85 PathProgramCache]: Analyzing trace with hash -2044655584, now seen corresponding path program 10 times [2024-06-21 19:25:00,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:25:00,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688373113] [2024-06-21 19:25:00,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:25:00,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:25:00,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:25:02,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:25:02,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:25:02,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688373113] [2024-06-21 19:25:02,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688373113] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:25:02,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:25:02,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 19:25:02,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251652985] [2024-06-21 19:25:02,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:25:02,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 19:25:02,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:25:02,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 19:25:02,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-21 19:25:03,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:25:03,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 98 transitions, 845 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 19:25:03,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:25:03,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:25:03,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:25:03,460 INFO L124 PetriNetUnfolderBase]: 222/435 cut-off events. [2024-06-21 19:25:03,460 INFO L125 PetriNetUnfolderBase]: For 20130/20130 co-relation queries the response was YES. [2024-06-21 19:25:03,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2480 conditions, 435 events. 222/435 cut-off events. For 20130/20130 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 1864 event pairs, 40 based on Foata normal form. 8/443 useless extension candidates. Maximal degree in co-relation 2415. Up to 340 conditions per place. [2024-06-21 19:25:03,462 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 77 selfloop transitions, 18 changer transitions 15/112 dead transitions. [2024-06-21 19:25:03,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 112 transitions, 1121 flow [2024-06-21 19:25:03,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-21 19:25:03,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-21 19:25:03,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 122 transitions. [2024-06-21 19:25:03,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28110599078341014 [2024-06-21 19:25:03,463 INFO L175 Difference]: Start difference. First operand has 157 places, 98 transitions, 845 flow. Second operand 14 states and 122 transitions. [2024-06-21 19:25:03,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 112 transitions, 1121 flow [2024-06-21 19:25:03,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 112 transitions, 1066 flow, removed 3 selfloop flow, removed 13 redundant places. [2024-06-21 19:25:03,496 INFO L231 Difference]: Finished difference. Result has 155 places, 90 transitions, 771 flow [2024-06-21 19:25:03,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=790, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=771, PETRI_PLACES=155, PETRI_TRANSITIONS=90} [2024-06-21 19:25:03,496 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 125 predicate places. [2024-06-21 19:25:03,496 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 90 transitions, 771 flow [2024-06-21 19:25:03,496 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 19:25:03,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:25:03,497 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 19:25:03,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233 [2024-06-21 19:25:03,497 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 19:25:03,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:25:03,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1964974444, now seen corresponding path program 21 times [2024-06-21 19:25:03,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:25:03,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829446556] [2024-06-21 19:25:03,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:25:03,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:25:03,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:25:05,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:25:05,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:25:05,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829446556] [2024-06-21 19:25:05,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829446556] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:25:05,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:25:05,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 19:25:05,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539092973] [2024-06-21 19:25:05,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:25:05,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 19:25:05,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:25:05,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 19:25:05,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-21 19:25:05,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:25:05,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 90 transitions, 771 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 19:25:05,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:25:05,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:25:05,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:25:05,880 INFO L124 PetriNetUnfolderBase]: 204/401 cut-off events. [2024-06-21 19:25:05,880 INFO L125 PetriNetUnfolderBase]: For 16487/16487 co-relation queries the response was YES. [2024-06-21 19:25:05,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2288 conditions, 401 events. 204/401 cut-off events. For 16487/16487 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 1666 event pairs, 34 based on Foata normal form. 6/407 useless extension candidates. Maximal degree in co-relation 2225. Up to 342 conditions per place. [2024-06-21 19:25:05,882 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 80 selfloop transitions, 12 changer transitions 8/102 dead transitions. [2024-06-21 19:25:05,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 102 transitions, 1009 flow [2024-06-21 19:25:05,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:25:05,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:25:05,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 101 transitions. [2024-06-21 19:25:05,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.271505376344086 [2024-06-21 19:25:05,883 INFO L175 Difference]: Start difference. First operand has 155 places, 90 transitions, 771 flow. Second operand 12 states and 101 transitions. [2024-06-21 19:25:05,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 102 transitions, 1009 flow [2024-06-21 19:25:05,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 102 transitions, 955 flow, removed 9 selfloop flow, removed 15 redundant places. [2024-06-21 19:25:05,912 INFO L231 Difference]: Finished difference. Result has 142 places, 88 transitions, 735 flow [2024-06-21 19:25:05,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=721, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=735, PETRI_PLACES=142, PETRI_TRANSITIONS=88} [2024-06-21 19:25:05,912 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 112 predicate places. [2024-06-21 19:25:05,912 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 88 transitions, 735 flow [2024-06-21 19:25:05,912 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 19:25:05,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:25:05,913 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 19:25:05,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234 [2024-06-21 19:25:05,913 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 19:25:05,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:25:05,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1965220212, now seen corresponding path program 11 times [2024-06-21 19:25:05,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:25:05,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394775533] [2024-06-21 19:25:05,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:25:05,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:25:05,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:25:07,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:25:07,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:25:07,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394775533] [2024-06-21 19:25:07,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394775533] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:25:07,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:25:07,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:25:07,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508019832] [2024-06-21 19:25:07,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:25:07,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:25:07,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:25:07,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:25:07,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:25:08,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:25:08,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 88 transitions, 735 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 19:25:08,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:25:08,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:25:08,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:25:08,443 INFO L124 PetriNetUnfolderBase]: 214/427 cut-off events. [2024-06-21 19:25:08,443 INFO L125 PetriNetUnfolderBase]: For 19613/19613 co-relation queries the response was YES. [2024-06-21 19:25:08,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2288 conditions, 427 events. 214/427 cut-off events. For 19613/19613 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1835 event pairs, 44 based on Foata normal form. 16/443 useless extension candidates. Maximal degree in co-relation 2229. Up to 306 conditions per place. [2024-06-21 19:25:08,445 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 72 selfloop transitions, 13 changer transitions 13/100 dead transitions. [2024-06-21 19:25:08,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 100 transitions, 979 flow [2024-06-21 19:25:08,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:25:08,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:25:08,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 105 transitions. [2024-06-21 19:25:08,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28225806451612906 [2024-06-21 19:25:08,446 INFO L175 Difference]: Start difference. First operand has 142 places, 88 transitions, 735 flow. Second operand 12 states and 105 transitions. [2024-06-21 19:25:08,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 100 transitions, 979 flow [2024-06-21 19:25:08,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 100 transitions, 951 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-21 19:25:08,469 INFO L231 Difference]: Finished difference. Result has 140 places, 78 transitions, 655 flow [2024-06-21 19:25:08,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=707, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=655, PETRI_PLACES=140, PETRI_TRANSITIONS=78} [2024-06-21 19:25:08,469 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 110 predicate places. [2024-06-21 19:25:08,469 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 78 transitions, 655 flow [2024-06-21 19:25:08,469 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 19:25:08,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:25:08,469 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 19:25:08,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable235 [2024-06-21 19:25:08,469 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 19:25:08,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:25:08,470 INFO L85 PathProgramCache]: Analyzing trace with hash 727657156, now seen corresponding path program 22 times [2024-06-21 19:25:08,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:25:08,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011100684] [2024-06-21 19:25:08,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:25:08,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:25:08,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:25:10,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:25:10,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:25:10,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011100684] [2024-06-21 19:25:10,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011100684] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:25:10,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:25:10,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 19:25:10,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940245839] [2024-06-21 19:25:10,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:25:10,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 19:25:10,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:25:10,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 19:25:10,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-21 19:25:10,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:25:10,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 78 transitions, 655 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 19:25:10,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:25:10,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:25:10,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:25:11,015 INFO L124 PetriNetUnfolderBase]: 179/358 cut-off events. [2024-06-21 19:25:11,015 INFO L125 PetriNetUnfolderBase]: For 12619/12619 co-relation queries the response was YES. [2024-06-21 19:25:11,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1971 conditions, 358 events. 179/358 cut-off events. For 12619/12619 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1411 event pairs, 34 based on Foata normal form. 6/364 useless extension candidates. Maximal degree in co-relation 1913. Up to 253 conditions per place. [2024-06-21 19:25:11,017 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 54 selfloop transitions, 19 changer transitions 17/92 dead transitions. [2024-06-21 19:25:11,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 92 transitions, 873 flow [2024-06-21 19:25:11,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:25:11,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:25:11,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 121 transitions. [2024-06-21 19:25:11,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32526881720430106 [2024-06-21 19:25:11,018 INFO L175 Difference]: Start difference. First operand has 140 places, 78 transitions, 655 flow. Second operand 12 states and 121 transitions. [2024-06-21 19:25:11,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 92 transitions, 873 flow [2024-06-21 19:25:11,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 92 transitions, 827 flow, removed 3 selfloop flow, removed 17 redundant places. [2024-06-21 19:25:11,037 INFO L231 Difference]: Finished difference. Result has 133 places, 70 transitions, 604 flow [2024-06-21 19:25:11,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=609, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=604, PETRI_PLACES=133, PETRI_TRANSITIONS=70} [2024-06-21 19:25:11,038 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 103 predicate places. [2024-06-21 19:25:11,038 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 70 transitions, 604 flow [2024-06-21 19:25:11,038 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 19:25:11,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:25:11,038 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 19:25:11,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236 [2024-06-21 19:25:11,038 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 19:25:11,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:25:11,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1621835828, now seen corresponding path program 12 times [2024-06-21 19:25:11,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:25:11,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306910074] [2024-06-21 19:25:11,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:25:11,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:25:11,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:25:12,896 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 19:25:12,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:25:12,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306910074] [2024-06-21 19:25:12,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306910074] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:25:12,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:25:12,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:25:12,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351631703] [2024-06-21 19:25:12,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:25:12,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:25:12,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:25:12,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:25:12,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:25:13,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:25:13,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 70 transitions, 604 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 19:25:13,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:25:13,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:25:13,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:25:13,165 INFO L124 PetriNetUnfolderBase]: 167/334 cut-off events. [2024-06-21 19:25:13,166 INFO L125 PetriNetUnfolderBase]: For 12334/12334 co-relation queries the response was YES. [2024-06-21 19:25:13,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1877 conditions, 334 events. 167/334 cut-off events. For 12334/12334 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1315 event pairs, 38 based on Foata normal form. 8/342 useless extension candidates. Maximal degree in co-relation 1822. Up to 206 conditions per place. [2024-06-21 19:25:13,167 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 46 selfloop transitions, 18 changer transitions 16/82 dead transitions. [2024-06-21 19:25:13,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 82 transitions, 812 flow [2024-06-21 19:25:13,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:25:13,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:25:13,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-21 19:25:13,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-21 19:25:13,168 INFO L175 Difference]: Start difference. First operand has 133 places, 70 transitions, 604 flow. Second operand 10 states and 110 transitions. [2024-06-21 19:25:13,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 82 transitions, 812 flow [2024-06-21 19:25:13,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 82 transitions, 754 flow, removed 8 selfloop flow, removed 14 redundant places. [2024-06-21 19:25:13,182 INFO L231 Difference]: Finished difference. Result has 119 places, 57 transitions, 453 flow [2024-06-21 19:25:13,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=548, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=453, PETRI_PLACES=119, PETRI_TRANSITIONS=57} [2024-06-21 19:25:13,182 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 89 predicate places. [2024-06-21 19:25:13,182 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 57 transitions, 453 flow [2024-06-21 19:25:13,183 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 19:25:13,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:25:13,183 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 19:25:13,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237 [2024-06-21 19:25:13,183 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 19:25:13,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:25:13,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1973552082, now seen corresponding path program 13 times [2024-06-21 19:25:13,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:25:13,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65308373] [2024-06-21 19:25:13,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:25:13,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:25:13,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:25:15,127 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 19:25:15,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:25:15,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65308373] [2024-06-21 19:25:15,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65308373] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:25:15,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:25:15,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 19:25:15,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408737797] [2024-06-21 19:25:15,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:25:15,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 19:25:15,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:25:15,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 19:25:15,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-21 19:25:15,319 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:25:15,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 57 transitions, 453 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 19:25:15,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:25:15,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:25:15,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:25:15,624 INFO L124 PetriNetUnfolderBase]: 137/288 cut-off events. [2024-06-21 19:25:15,624 INFO L125 PetriNetUnfolderBase]: For 8070/8070 co-relation queries the response was YES. [2024-06-21 19:25:15,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1529 conditions, 288 events. 137/288 cut-off events. For 8070/8070 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1111 event pairs, 32 based on Foata normal form. 6/294 useless extension candidates. Maximal degree in co-relation 1479. Up to 158 conditions per place. [2024-06-21 19:25:15,625 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 52 selfloop transitions, 13 changer transitions 7/74 dead transitions. [2024-06-21 19:25:15,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 74 transitions, 719 flow [2024-06-21 19:25:15,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:25:15,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:25:15,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 109 transitions. [2024-06-21 19:25:15,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29301075268817206 [2024-06-21 19:25:15,626 INFO L175 Difference]: Start difference. First operand has 119 places, 57 transitions, 453 flow. Second operand 12 states and 109 transitions. [2024-06-21 19:25:15,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 74 transitions, 719 flow [2024-06-21 19:25:15,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 74 transitions, 633 flow, removed 4 selfloop flow, removed 17 redundant places. [2024-06-21 19:25:15,636 INFO L231 Difference]: Finished difference. Result has 114 places, 54 transitions, 381 flow [2024-06-21 19:25:15,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=371, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=381, PETRI_PLACES=114, PETRI_TRANSITIONS=54} [2024-06-21 19:25:15,636 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 84 predicate places. [2024-06-21 19:25:15,636 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 54 transitions, 381 flow [2024-06-21 19:25:15,636 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 19:25:15,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:25:15,636 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 19:25:15,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238 [2024-06-21 19:25:15,637 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 19:25:15,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:25:15,637 INFO L85 PathProgramCache]: Analyzing trace with hash -707000108, now seen corresponding path program 23 times [2024-06-21 19:25:15,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:25:15,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915250801] [2024-06-21 19:25:15,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:25:15,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:25:15,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:25:17,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:25:17,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:25:17,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915250801] [2024-06-21 19:25:17,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915250801] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:25:17,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:25:17,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 19:25:17,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901750899] [2024-06-21 19:25:17,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:25:17,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 19:25:17,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:25:17,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 19:25:17,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-06-21 19:25:17,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:25:17,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 54 transitions, 381 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 19:25:17,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:25:17,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:25:17,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:25:18,130 INFO L124 PetriNetUnfolderBase]: 127/270 cut-off events. [2024-06-21 19:25:18,130 INFO L125 PetriNetUnfolderBase]: For 7411/7411 co-relation queries the response was YES. [2024-06-21 19:25:18,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1399 conditions, 270 events. 127/270 cut-off events. For 7411/7411 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1015 event pairs, 30 based on Foata normal form. 6/276 useless extension candidates. Maximal degree in co-relation 1351. Up to 187 conditions per place. [2024-06-21 19:25:18,132 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 39 selfloop transitions, 15 changer transitions 11/67 dead transitions. [2024-06-21 19:25:18,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 67 transitions, 547 flow [2024-06-21 19:25:18,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:25:18,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:25:18,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 120 transitions. [2024-06-21 19:25:18,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-21 19:25:18,132 INFO L175 Difference]: Start difference. First operand has 114 places, 54 transitions, 381 flow. Second operand 12 states and 120 transitions. [2024-06-21 19:25:18,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 67 transitions, 547 flow [2024-06-21 19:25:18,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 67 transitions, 518 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-21 19:25:18,141 INFO L231 Difference]: Finished difference. Result has 111 places, 50 transitions, 355 flow [2024-06-21 19:25:18,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=355, PETRI_PLACES=111, PETRI_TRANSITIONS=50} [2024-06-21 19:25:18,141 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 81 predicate places. [2024-06-21 19:25:18,141 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 50 transitions, 355 flow [2024-06-21 19:25:18,141 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 19:25:18,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:25:18,141 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 19:25:18,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable239 [2024-06-21 19:25:18,141 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 19:25:18,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:25:18,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1850858676, now seen corresponding path program 14 times [2024-06-21 19:25:18,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:25:18,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965746254] [2024-06-21 19:25:18,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:25:18,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:25:18,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:25:20,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:25:20,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:25:20,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965746254] [2024-06-21 19:25:20,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965746254] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:25:20,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:25:20,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 19:25:20,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29770430] [2024-06-21 19:25:20,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:25:20,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 19:25:20,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:25:20,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 19:25:20,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-21 19:25:20,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 19:25:20,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 50 transitions, 355 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 19:25:20,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:25:20,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 19:25:20,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:25:20,752 INFO L124 PetriNetUnfolderBase]: 101/216 cut-off events. [2024-06-21 19:25:20,752 INFO L125 PetriNetUnfolderBase]: For 4666/4666 co-relation queries the response was YES. [2024-06-21 19:25:20,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1008 conditions, 216 events. 101/216 cut-off events. For 4666/4666 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 720 event pairs, 24 based on Foata normal form. 8/224 useless extension candidates. Maximal degree in co-relation 962. Up to 142 conditions per place. [2024-06-21 19:25:20,753 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 35 selfloop transitions, 6 changer transitions 20/63 dead transitions. [2024-06-21 19:25:20,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 63 transitions, 525 flow [2024-06-21 19:25:20,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 19:25:20,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 19:25:20,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 108 transitions. [2024-06-21 19:25:20,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2679900744416873 [2024-06-21 19:25:20,754 INFO L175 Difference]: Start difference. First operand has 111 places, 50 transitions, 355 flow. Second operand 13 states and 108 transitions. [2024-06-21 19:25:20,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 63 transitions, 525 flow [2024-06-21 19:25:20,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 63 transitions, 489 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-21 19:25:20,759 INFO L231 Difference]: Finished difference. Result has 107 places, 40 transitions, 270 flow [2024-06-21 19:25:20,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=319, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=270, PETRI_PLACES=107, PETRI_TRANSITIONS=40} [2024-06-21 19:25:20,759 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 77 predicate places. [2024-06-21 19:25:20,759 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 40 transitions, 270 flow [2024-06-21 19:25:20,759 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 19:25:20,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:25:20,760 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 19:25:20,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240 [2024-06-21 19:25:20,760 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 19:25:20,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:25:20,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1849982746, now seen corresponding path program 24 times [2024-06-21 19:25:20,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:25:20,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887398538] [2024-06-21 19:25:20,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:25:20,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:25:20,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:25:22,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:25:22,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:25:22,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887398538] [2024-06-21 19:25:22,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887398538] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:25:22,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:25:22,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:25:22,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661854168] [2024-06-21 19:25:22,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:25:22,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:25:22,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:25:22,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:25:22,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:25:22,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:25:22,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 40 transitions, 270 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 19:25:22,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:25:22,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:25:22,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:25:22,854 INFO L124 PetriNetUnfolderBase]: 81/176 cut-off events. [2024-06-21 19:25:22,854 INFO L125 PetriNetUnfolderBase]: For 3358/3358 co-relation queries the response was YES. [2024-06-21 19:25:22,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 807 conditions, 176 events. 81/176 cut-off events. For 3358/3358 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 537 event pairs, 20 based on Foata normal form. 6/182 useless extension candidates. Maximal degree in co-relation 763. Up to 106 conditions per place. [2024-06-21 19:25:22,855 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 30 selfloop transitions, 8 changer transitions 12/52 dead transitions. [2024-06-21 19:25:22,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 52 transitions, 404 flow [2024-06-21 19:25:22,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:25:22,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:25:22,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 101 transitions. [2024-06-21 19:25:22,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3258064516129032 [2024-06-21 19:25:22,855 INFO L175 Difference]: Start difference. First operand has 107 places, 40 transitions, 270 flow. Second operand 10 states and 101 transitions. [2024-06-21 19:25:22,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 52 transitions, 404 flow [2024-06-21 19:25:22,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 52 transitions, 366 flow, removed 12 selfloop flow, removed 13 redundant places. [2024-06-21 19:25:22,859 INFO L231 Difference]: Finished difference. Result has 88 places, 34 transitions, 211 flow [2024-06-21 19:25:22,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=211, PETRI_PLACES=88, PETRI_TRANSITIONS=34} [2024-06-21 19:25:22,859 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 58 predicate places. [2024-06-21 19:25:22,859 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 34 transitions, 211 flow [2024-06-21 19:25:22,859 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 19:25:22,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:25:22,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:25:22,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241 [2024-06-21 19:25:22,859 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 19:25:22,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:25:22,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1850155726, now seen corresponding path program 25 times [2024-06-21 19:25:22,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:25:22,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378194269] [2024-06-21 19:25:22,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:25:22,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:25:22,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:25:24,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:25:24,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:25:24,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378194269] [2024-06-21 19:25:24,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378194269] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:25:24,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:25:24,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 19:25:24,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738383662] [2024-06-21 19:25:24,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:25:24,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 19:25:24,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:25:24,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 19:25:24,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-21 19:25:25,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 19:25:25,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 34 transitions, 211 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 19:25:25,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:25:25,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 19:25:25,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:25:25,389 INFO L124 PetriNetUnfolderBase]: 70/155 cut-off events. [2024-06-21 19:25:25,390 INFO L125 PetriNetUnfolderBase]: For 1991/1991 co-relation queries the response was YES. [2024-06-21 19:25:25,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 653 conditions, 155 events. 70/155 cut-off events. For 1991/1991 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 439 event pairs, 16 based on Foata normal form. 6/161 useless extension candidates. Maximal degree in co-relation 615. Up to 88 conditions per place. [2024-06-21 19:25:25,391 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 25 selfloop transitions, 7 changer transitions 14/48 dead transitions. [2024-06-21 19:25:25,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 48 transitions, 337 flow [2024-06-21 19:25:25,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:25:25,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:25:25,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 112 transitions. [2024-06-21 19:25:25,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3010752688172043 [2024-06-21 19:25:25,392 INFO L175 Difference]: Start difference. First operand has 88 places, 34 transitions, 211 flow. Second operand 12 states and 112 transitions. [2024-06-21 19:25:25,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 48 transitions, 337 flow [2024-06-21 19:25:25,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 48 transitions, 309 flow, removed 3 selfloop flow, removed 13 redundant places. [2024-06-21 19:25:25,395 INFO L231 Difference]: Finished difference. Result has 82 places, 29 transitions, 175 flow [2024-06-21 19:25:25,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=175, PETRI_PLACES=82, PETRI_TRANSITIONS=29} [2024-06-21 19:25:25,396 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 52 predicate places. [2024-06-21 19:25:25,396 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 29 transitions, 175 flow [2024-06-21 19:25:25,396 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 19:25:25,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:25:25,396 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 19:25:25,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242 [2024-06-21 19:25:25,396 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 19:25:25,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:25:25,397 INFO L85 PathProgramCache]: Analyzing trace with hash -698422470, now seen corresponding path program 15 times [2024-06-21 19:25:25,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:25:25,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357921350] [2024-06-21 19:25:25,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:25:25,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:25:25,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:25:27,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:25:27,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:25:27,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357921350] [2024-06-21 19:25:27,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357921350] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:25:27,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:25:27,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:25:27,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260787941] [2024-06-21 19:25:27,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:25:27,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:25:27,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:25:27,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:25:27,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:25:27,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-21 19:25:27,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 29 transitions, 175 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 19:25:27,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:25:27,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-21 19:25:27,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:25:27,399 INFO L124 PetriNetUnfolderBase]: 58/131 cut-off events. [2024-06-21 19:25:27,399 INFO L125 PetriNetUnfolderBase]: For 1571/1571 co-relation queries the response was YES. [2024-06-21 19:25:27,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 559 conditions, 131 events. 58/131 cut-off events. For 1571/1571 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 341 event pairs, 14 based on Foata normal form. 6/137 useless extension candidates. Maximal degree in co-relation 523. Up to 66 conditions per place. [2024-06-21 19:25:27,400 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 20 selfloop transitions, 10 changer transitions 7/40 dead transitions. [2024-06-21 19:25:27,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 40 transitions, 279 flow [2024-06-21 19:25:27,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:25:27,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:25:27,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-06-21 19:25:27,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3313782991202346 [2024-06-21 19:25:27,401 INFO L175 Difference]: Start difference. First operand has 82 places, 29 transitions, 175 flow. Second operand 11 states and 113 transitions. [2024-06-21 19:25:27,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 40 transitions, 279 flow [2024-06-21 19:25:27,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 40 transitions, 251 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-21 19:25:27,402 INFO L231 Difference]: Finished difference. Result has 73 places, 26 transitions, 154 flow [2024-06-21 19:25:27,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=154, PETRI_PLACES=73, PETRI_TRANSITIONS=26} [2024-06-21 19:25:27,402 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 43 predicate places. [2024-06-21 19:25:27,403 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 26 transitions, 154 flow [2024-06-21 19:25:27,403 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 19:25:27,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:25:27,403 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 19:25:27,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable243 [2024-06-21 19:25:27,403 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 19:25:27,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:25:27,403 INFO L85 PathProgramCache]: Analyzing trace with hash -698710770, now seen corresponding path program 16 times [2024-06-21 19:25:27,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:25:27,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679076983] [2024-06-21 19:25:27,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:25:27,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:25:27,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:25:29,214 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 19:25:29,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:25:29,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679076983] [2024-06-21 19:25:29,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679076983] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:25:29,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:25:29,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:25:29,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63260367] [2024-06-21 19:25:29,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:25:29,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:25:29,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:25:29,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:25:29,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:25:29,319 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-21 19:25:29,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 26 transitions, 154 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 19:25:29,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:25:29,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-21 19:25:29,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:25:29,400 INFO L124 PetriNetUnfolderBase]: 30/75 cut-off events. [2024-06-21 19:25:29,400 INFO L125 PetriNetUnfolderBase]: For 603/603 co-relation queries the response was YES. [2024-06-21 19:25:29,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 276 conditions, 75 events. 30/75 cut-off events. For 603/603 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 126 event pairs, 6 based on Foata normal form. 8/83 useless extension candidates. Maximal degree in co-relation 244. Up to 42 conditions per place. [2024-06-21 19:25:29,401 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 0 selfloop transitions, 0 changer transitions 33/33 dead transitions. [2024-06-21 19:25:29,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 33 transitions, 204 flow [2024-06-21 19:25:29,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:25:29,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:25:29,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 107 transitions. [2024-06-21 19:25:29,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31378299120234604 [2024-06-21 19:25:29,401 INFO L175 Difference]: Start difference. First operand has 73 places, 26 transitions, 154 flow. Second operand 11 states and 107 transitions. [2024-06-21 19:25:29,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 33 transitions, 204 flow [2024-06-21 19:25:29,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 33 transitions, 157 flow, removed 4 selfloop flow, removed 17 redundant places. [2024-06-21 19:25:29,402 INFO L231 Difference]: Finished difference. Result has 62 places, 0 transitions, 0 flow [2024-06-21 19:25:29,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=62, PETRI_TRANSITIONS=0} [2024-06-21 19:25:29,402 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 32 predicate places. [2024-06-21 19:25:29,402 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 0 transitions, 0 flow [2024-06-21 19:25:29,402 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 19:25:29,404 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-21 19:25:29,405 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-21 19:25:29,405 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-21 19:25:29,405 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-21 19:25:29,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable244 [2024-06-21 19:25:29,406 INFO L445 BasicCegarLoop]: Path program histogram: [40, 30, 25, 16, 16, 15, 15, 13, 9, 8, 7, 7, 6, 6, 6, 5, 5, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:25:29,409 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-21 19:25:29,409 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-21 19:25:29,412 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-21 19:25:29,412 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-21 19:25:29,413 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.06 07:25:29 BasicIcfg [2024-06-21 19:25:29,413 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-21 19:25:29,414 INFO L158 Benchmark]: Toolchain (without parser) took 743306.33ms. Allocated memory was 176.2MB in the beginning and 2.3GB in the end (delta: 2.1GB). Free memory was 102.8MB in the beginning and 1.9GB in the end (delta: -1.8GB). Peak memory consumption was 329.5MB. Max. memory is 16.1GB. [2024-06-21 19:25:29,414 INFO L158 Benchmark]: Witness Parser took 0.18ms. Allocated memory is still 104.9MB. Free memory is still 74.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-21 19:25:29,415 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 176.2MB. Free memory is still 150.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-21 19:25:29,415 INFO L158 Benchmark]: CACSL2BoogieTranslator took 658.76ms. Allocated memory is still 176.2MB. Free memory was 102.6MB in the beginning and 131.0MB in the end (delta: -28.4MB). Peak memory consumption was 19.3MB. Max. memory is 16.1GB. [2024-06-21 19:25:29,415 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.55ms. Allocated memory is still 176.2MB. Free memory was 131.0MB in the beginning and 126.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-21 19:25:29,415 INFO L158 Benchmark]: Boogie Preprocessor took 61.77ms. Allocated memory is still 176.2MB. Free memory was 126.8MB in the beginning and 123.3MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-21 19:25:29,416 INFO L158 Benchmark]: RCFGBuilder took 801.52ms. Allocated memory is still 176.2MB. Free memory was 123.3MB in the beginning and 132.1MB in the end (delta: -8.8MB). Peak memory consumption was 55.9MB. Max. memory is 16.1GB. [2024-06-21 19:25:29,416 INFO L158 Benchmark]: TraceAbstraction took 741710.39ms. Allocated memory was 176.2MB in the beginning and 2.3GB in the end (delta: 2.1GB). Free memory was 131.0MB in the beginning and 1.9GB in the end (delta: -1.8GB). Peak memory consumption was 357.0MB. Max. memory is 16.1GB. [2024-06-21 19:25:29,417 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 0.18ms. Allocated memory is still 104.9MB. Free memory is still 74.7MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.17ms. Allocated memory is still 176.2MB. Free memory is still 150.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 658.76ms. Allocated memory is still 176.2MB. Free memory was 102.6MB in the beginning and 131.0MB in the end (delta: -28.4MB). Peak memory consumption was 19.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 68.55ms. Allocated memory is still 176.2MB. Free memory was 131.0MB in the beginning and 126.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 61.77ms. Allocated memory is still 176.2MB. Free memory was 126.8MB in the beginning and 123.3MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 801.52ms. Allocated memory is still 176.2MB. Free memory was 123.3MB in the beginning and 132.1MB in the end (delta: -8.8MB). Peak memory consumption was 55.9MB. Max. memory is 16.1GB. * TraceAbstraction took 741710.39ms. Allocated memory was 176.2MB in the beginning and 2.3GB in the end (delta: 2.1GB). Free memory was 131.0MB in the beginning and 1.9GB in the end (delta: -1.8GB). Peak memory consumption was 357.0MB. 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: 741.6s, OverallIterations: 245, TraceHistogramMax: 1, PathProgramHistogramMax: 40, EmptinessCheckTime: 0.0s, AutomataDifference: 343.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 13715 SdHoareTripleChecker+Valid, 67.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11301 mSDsluCounter, 10217 SdHoareTripleChecker+Invalid, 58.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8830 mSDsCounter, 3790 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 87317 IncrementalHoareTripleChecker+Invalid, 91107 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3790 mSolverCounterUnsat, 1387 mSDtfsCounter, 87317 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2552 GetRequests, 4 SyntacticMatches, 29 SemanticMatches, 2519 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4531 ImplicationChecksByTransitivity, 100.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7638occurred in iteration=197, InterpolantAutomatonStates: 2514, 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: 0.3s SsaConstructionTime, 2.6s SatisfiabilityAnalysisTime, 393.6s InterpolantComputationTime, 4085 NumberOfCodeBlocks, 4085 NumberOfCodeBlocksAsserted, 245 NumberOfCheckSat, 3840 ConstructedInterpolants, 0 QuantifiedInterpolants, 220403 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 245 InterpolantComputations, 245 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 19:25:29,588 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE