./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi000_power.oepc_pso.oepc_rmo.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/mutex-meet/rfi000_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version bcb38a6f 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/rfi000_power.oepc_pso.oepc_rmo.oepc.i ./goblint.2024-05-21_14-57-05.files/mutex-meet/rfi000_power.oepc_pso.oepc_rmo.oepc.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-bcb38a6-m [2024-06-04 17:41:15,352 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-04 17:41:15,422 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-04 17:41:15,427 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-04 17:41:15,427 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-04 17:41:15,451 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-04 17:41:15,451 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-04 17:41:15,452 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-04 17:41:15,452 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-04 17:41:15,456 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-04 17:41:15,456 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-04 17:41:15,456 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-04 17:41:15,457 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-04 17:41:15,458 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-04 17:41:15,458 INFO L153 SettingsManager]: * Use SBE=true [2024-06-04 17:41:15,459 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-04 17:41:15,459 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-04 17:41:15,459 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-04 17:41:15,459 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-04 17:41:15,460 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-04 17:41:15,460 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-04 17:41:15,460 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-04 17:41:15,460 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-04 17:41:15,461 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-04 17:41:15,461 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-04 17:41:15,461 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-04 17:41:15,461 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-04 17:41:15,461 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-04 17:41:15,462 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-04 17:41:15,462 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-04 17:41:15,463 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-04 17:41:15,463 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-04 17:41:15,463 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 17:41:15,464 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-04 17:41:15,464 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-04 17:41:15,464 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-04 17:41:15,464 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-04 17:41:15,464 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-04 17:41:15,464 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-04 17:41:15,465 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-04 17:41:15,465 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-04 17:41:15,465 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-04 17:41:15,465 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-04 17:41:15,465 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-04 17:41:15,691 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-04 17:41:15,711 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-04 17:41:15,713 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-04 17:41:15,714 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-04 17:41:15,714 INFO L274 PluginConnector]: CDTParser initialized [2024-06-04 17:41:15,715 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi000_power.oepc_pso.oepc_rmo.oepc.i [2024-06-04 17:41:16,795 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-04 17:41:17,064 INFO L384 CDTParser]: Found 1 translation units. [2024-06-04 17:41:17,064 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi000_power.oepc_pso.oepc_rmo.oepc.i [2024-06-04 17:41:17,083 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49e6ec0ae/26f75cd0df8e41cbae91b1a32a136ce5/FLAGfd170aa3b [2024-06-04 17:41:17,094 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49e6ec0ae/26f75cd0df8e41cbae91b1a32a136ce5 [2024-06-04 17:41:17,096 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-04 17:41:17,097 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-04 17:41:17,098 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/mutex-meet/rfi000_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml [2024-06-04 17:41:17,245 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-04 17:41:17,247 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-04 17:41:17,248 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-04 17:41:17,248 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-04 17:41:17,252 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-04 17:41:17,252 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 05:41:17" (1/2) ... [2024-06-04 17:41:17,253 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50b4fae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 05:41:17, skipping insertion in model container [2024-06-04 17:41:17,254 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 05:41:17" (1/2) ... [2024-06-04 17:41:17,255 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5f2a8a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 05:41:17, skipping insertion in model container [2024-06-04 17:41:17,255 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 05:41:17" (2/2) ... [2024-06-04 17:41:17,256 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50b4fae and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 05:41:17, skipping insertion in model container [2024-06-04 17:41:17,256 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 05:41:17" (2/2) ... [2024-06-04 17:41:17,256 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-04 17:41:17,314 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-04 17:41:17,315 INFO L97 edCorrectnessWitness]: Location invariant before [L830-L830] (((((((((((((((! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )y$r_buff0_thd0) + (long long )y$r_buff0_thd2 >= 0LL && (0LL - (long long )y$r_buff0_thd0) + (long long )y$r_buff1_thd0 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$r_buff1_thd2 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$w_buff1 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$r_buff1_thd0 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$r_buff1_thd2 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$w_buff1 >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$r_buff1_thd2 >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$w_buff1 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$read_delayed >= 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) && (0LL - (long long )y$read_delayed) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$read_delayed) + (long long )y$w_buff1 >= 0LL) && (2LL - (long long )y$w_buff0) + (long long )y$w_buff1 >= 0LL) && (long long )__unbuffered_cnt + (long long )__unbuffered_p1_EAX >= 0LL) && (long long )__unbuffered_cnt + (long long )__unbuffered_p1_EBX >= 0LL) && (long long )__unbuffered_cnt + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_cnt + (long long )x >= 0LL) && (long long )__unbuffered_cnt + (long long )y >= 0LL) && (long long )__unbuffered_cnt + (long long )y$flush_delayed >= 0LL) && (long long )__unbuffered_cnt + (long long )y$mem_tmp >= 0LL) && (long long )__unbuffered_cnt + (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$r_buff0_thd2 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$r_buff1_thd2 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_cnt + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$w_buff1 >= 0LL) && (long long )__unbuffered_cnt + (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_cnt + (long long )weak$$choice2 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )__unbuffered_p1_EBX >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$flush_delayed >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$mem_tmp >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$r_buff0_thd2 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$r_buff1_thd2 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$w_buff1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )weak$$choice2 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )x >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$flush_delayed >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$mem_tmp >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$r_buff0_thd2 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$r_buff1_thd2 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$w_buff1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )weak$$choice2 >= 0LL) && (long long )main$tmp_guard1 + (long long )x >= 0LL) && (long long )main$tmp_guard1 + (long long )y >= 0LL) && (long long )main$tmp_guard1 + (long long )y$flush_delayed >= 0LL) && (long long )main$tmp_guard1 + (long long )y$mem_tmp >= 0LL) && (long long )main$tmp_guard1 + (long long )y$r_buff0_thd0 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$r_buff0_thd2 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$r_buff1_thd2 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$read_delayed >= 0LL) && (long long )main$tmp_guard1 + (long long )y$w_buff0 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$w_buff1 >= 0LL) && (long long )main$tmp_guard1 + (long long )weak$$choice0 >= 0LL) && (long long )main$tmp_guard1 + (long long )weak$$choice2 >= 0LL) && (long long )x + (long long )y >= 0LL) && (long long )x + (long long )y$flush_delayed >= 0LL) && (long long )x + (long long )y$mem_tmp >= 0LL) && (long long )x + (long long )y$r_buff0_thd0 >= 0LL) && (long long )x + (long long )y$r_buff0_thd2 >= 0LL) && (long long )x + (long long )y$r_buff1_thd0 >= 0LL) && (long long )x + (long long )y$r_buff1_thd2 >= 0LL) && (long long )x + (long long )y$read_delayed >= 0LL) && (long long )x + (long long )y$w_buff0 >= 0LL) && (long long )x + (long long )y$w_buff1 >= 0LL) && (long long )y + (long long )y$flush_delayed >= 0LL) && (long long )y + (long long )y$mem_tmp >= 0LL) && (long long )y + (long long )y$r_buff0_thd0 >= 0LL) && (long long )y + (long long )y$r_buff0_thd2 >= 0LL) && (long long )y + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y + (long long )y$r_buff1_thd2 >= 0LL) && (long long )y + (long long )y$read_delayed >= 0LL) && (long long )y + (long long )y$w_buff0 >= 0LL) && (long long )y + (long long )y$w_buff1 >= 0LL) && (long long )y$flush_delayed + (long long )y$mem_tmp >= 0LL) && (long long )y$flush_delayed + (long long )y$r_buff0_thd0 >= 0LL) && (long long )y$flush_delayed + (long long )y$r_buff0_thd2 >= 0LL) && (long long )y$flush_delayed + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$flush_delayed + (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$flush_delayed + (long long )y$read_delayed >= 0LL) && (long long )y$flush_delayed + (long long )y$w_buff0 >= 0LL) && (long long )y$flush_delayed + (long long )y$w_buff1 >= 0LL) && (long long )y$mem_tmp + (long long )y$r_buff0_thd0 >= 0LL) && (long long )y$mem_tmp + (long long )y$r_buff0_thd2 >= 0LL) && (long long )y$mem_tmp + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$mem_tmp + (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$mem_tmp + (long long )y$read_delayed >= 0LL) && (long long )y$mem_tmp + (long long )y$w_buff0 >= 0LL) && (long long )y$mem_tmp + (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$r_buff0_thd2 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd2 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd2 + (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd2 + (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd2 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd2 + (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$read_delayed >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff1_thd2 + (long long )y$read_delayed >= 0LL) && (long long )y$r_buff1_thd2 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd2 + (long long )y$w_buff1 >= 0LL) && (long long )y$read_delayed + (long long )y$w_buff0 >= 0LL) && (long long )y$read_delayed + (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 + (long long )y$w_buff1 >= 0LL) && (long long )weak$$choice0 + (long long )x >= 0LL) && (long long )weak$$choice0 + (long long )y >= 0LL) && (long long )weak$$choice0 + (long long )y$flush_delayed >= 0LL) && (long long )weak$$choice0 + (long long )y$mem_tmp >= 0LL) && (long long )weak$$choice0 + (long long )y$r_buff0_thd0 >= 0LL) && (long long )weak$$choice0 + (long long )y$r_buff0_thd2 >= 0LL) && (long long )weak$$choice0 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )weak$$choice0 + (long long )y$r_buff1_thd2 >= 0LL) && (long long )weak$$choice0 + (long long )y$read_delayed >= 0LL) && (long long )weak$$choice0 + (long long )y$w_buff0 >= 0LL) && (long long )weak$$choice0 + (long long )y$w_buff1 >= 0LL) && (long long )weak$$choice0 + (long long )weak$$choice2 >= 0LL) && (long long )weak$$choice2 + (long long )x >= 0LL) && (long long )weak$$choice2 + (long long )y >= 0LL) && (long long )weak$$choice2 + (long long )y$flush_delayed >= 0LL) && (long long )weak$$choice2 + (long long )y$mem_tmp >= 0LL) && (long long )weak$$choice2 + (long long )y$r_buff0_thd0 >= 0LL) && (long long )weak$$choice2 + (long long )y$r_buff0_thd2 >= 0LL) && (long long )weak$$choice2 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )weak$$choice2 + (long long )y$r_buff1_thd2 >= 0LL) && (long long )weak$$choice2 + (long long )y$read_delayed >= 0LL) && (long long )weak$$choice2 + (long long )y$w_buff0 >= 0LL) && (long long )weak$$choice2 + (long long )y$w_buff1 >= 0LL) && (2LL + (long long )__unbuffered_cnt) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )__unbuffered_cnt) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )__unbuffered_p1_EAX) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )__unbuffered_p1_EAX) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )__unbuffered_p1_EBX) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )__unbuffered_p1_EBX) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )main$tmp_guard1) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )main$tmp_guard1) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )x) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )x) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )y) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )y) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )y$flush_delayed) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )y$flush_delayed) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )y$mem_tmp) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )y$mem_tmp) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )y$r_buff0_thd0) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )y$r_buff0_thd0) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )y$r_buff0_thd2) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )y$r_buff0_thd2) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )y$r_buff1_thd0) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )y$r_buff1_thd0) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )y$r_buff1_thd2) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )y$r_buff1_thd2) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )y$read_delayed) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )y$read_delayed) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )weak$$choice0) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )weak$$choice0) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )weak$$choice2) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )weak$$choice2) - (long long )y$w_buff1 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) - (long long )y$r_buff0_thd2 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) - (long long )y$r_buff1_thd0 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) - (long long )y$r_buff1_thd2 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) - (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff0_thd2) - (long long )y$r_buff1_thd0 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) - (long long )y$r_buff1_thd2 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) - (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff1_thd0) - (long long )y$r_buff1_thd2 >= 0LL) && (0LL - (long long )y$r_buff1_thd0) - (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff1_thd2) - (long long )y$read_delayed >= 0LL) && (2LL - (long long )y$r_buff0_thd0) - (long long )y$w_buff0 >= 0LL) && (2LL - (long long )y$r_buff0_thd0) - (long long )y$w_buff1 >= 0LL) && (2LL - (long long )y$r_buff0_thd2) - (long long )y$w_buff0 >= 0LL) && (2LL - (long long )y$r_buff0_thd2) - (long long )y$w_buff1 >= 0LL) && (2LL - (long long )y$r_buff1_thd0) - (long long )y$w_buff0 >= 0LL) && (2LL - (long long )y$r_buff1_thd0) - (long long )y$w_buff1 >= 0LL) && (2LL - (long long )y$r_buff1_thd2) - (long long )y$w_buff0 >= 0LL) && (2LL - (long long )y$r_buff1_thd2) - (long long )y$w_buff1 >= 0LL) && (2LL - (long long )y$read_delayed) - (long long )y$w_buff0 >= 0LL) && (2LL - (long long )y$read_delayed) - (long long )y$w_buff1 >= 0LL) && (4LL - (long long )y$w_buff0) - (long long )y$w_buff1 >= 0LL) && (long long )__unbuffered_cnt - (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_cnt - (long long )y$r_buff0_thd2 >= 0LL) && (long long )__unbuffered_cnt - (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_cnt - (long long )y$r_buff1_thd2 >= 0LL) && (long long )__unbuffered_cnt - (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$r_buff0_thd2 >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$r_buff1_thd2 >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$r_buff0_thd2 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$r_buff1_thd2 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$read_delayed >= 0LL) && (long long )main$tmp_guard1 - (long long )y$r_buff0_thd0 >= 0LL) && (long long )main$tmp_guard1 - (long long )y$r_buff0_thd2 >= 0LL) && (long long )main$tmp_guard1 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )main$tmp_guard1 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )main$tmp_guard1 - (long long )y$read_delayed >= 0LL) && (long long )x - (long long )y$r_buff0_thd0 >= 0LL) && (long long )x - (long long )y$r_buff0_thd2 >= 0LL) && (long long )x - (long long )y$r_buff1_thd0 >= 0LL) && (long long )x - (long long )y$r_buff1_thd2 >= 0LL) && (long long )x - (long long )y$read_delayed >= 0LL) && (long long )y - (long long )y$r_buff0_thd0 >= 0LL) && (long long )y - (long long )y$r_buff0_thd2 >= 0LL) && (long long )y - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y - (long long )y$read_delayed >= 0LL) && (long long )y$flush_delayed - (long long )y$r_buff0_thd0 >= 0LL) && (long long )y$flush_delayed - (long long )y$r_buff0_thd2 >= 0LL) && (long long )y$flush_delayed - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$flush_delayed - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$flush_delayed - (long long )y$read_delayed >= 0LL) && (long long )y$mem_tmp - (long long )y$r_buff0_thd0 >= 0LL) && (long long )y$mem_tmp - (long long )y$r_buff0_thd2 >= 0LL) && (long long )y$mem_tmp - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$mem_tmp - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$mem_tmp - (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd0 - (long long )y$r_buff0_thd2 >= 0LL) && (long long )y$r_buff0_thd0 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd0 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd0 - (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$read_delayed >= 0LL) && (long long )y$r_buff1_thd0 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff1_thd0 - (long long )y$read_delayed >= 0LL) && (long long )y$r_buff1_thd2 - (long long )y$read_delayed >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )weak$$choice0 - (long long )y$r_buff0_thd0 >= 0LL) && (long long )weak$$choice0 - (long long )y$r_buff0_thd2 >= 0LL) && (long long )weak$$choice0 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )weak$$choice0 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )weak$$choice0 - (long long )y$read_delayed >= 0LL) && (long long )weak$$choice2 - (long long )y$flush_delayed >= 0LL) && (long long )weak$$choice2 - (long long )y$r_buff0_thd0 >= 0LL) && (long long )weak$$choice2 - (long long )y$r_buff0_thd2 >= 0LL) && (long long )weak$$choice2 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )weak$$choice2 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )weak$$choice2 - (long long )y$read_delayed >= 0LL)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && 0 <= __unbuffered_p1_EAX) && 0 <= __unbuffered_p1_EBX) && 0 <= x) && 0 <= y) && 0 <= y$mem_tmp) && 0 <= y$w_buff0) && 0 <= y$w_buff1) && __unbuffered_p1_EAX <= 127) && __unbuffered_p1_EBX <= 127) && y <= 127) && y$mem_tmp <= 127) && y$w_buff0 <= 2) && y$w_buff0 <= 127) && y$w_buff1 <= 2) && y$w_buff1 <= 127) && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && y$w_buff0 % 2 == 0) && y$w_buff1 % 2 == 0) && (y$w_buff0 == 0 || y$w_buff0 == 2)) && (y$w_buff1 == 0 || y$w_buff1 == 2)) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)) && ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2)) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= y && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 127) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)))) && (! multithreaded || ((0 <= y$mem_tmp && y$mem_tmp <= 127) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || ((((0 <= y$w_buff0 && y$w_buff0 <= 2) && y$w_buff0 <= 127) && y$w_buff0 % 2 == 0) && (y$w_buff0 == 0 || y$w_buff0 == 2)))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((((0 <= y$w_buff1 && y$w_buff1 <= 2) && y$w_buff1 <= 127) && y$w_buff1 % 2 == 0) && (y$w_buff1 == 0 || y$w_buff1 == 2)))) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 127) && ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2)))) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-04 17:41:17,316 INFO L97 edCorrectnessWitness]: Location invariant before [L829-L829] (((((((((((((((! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )y$r_buff0_thd0) + (long long )y$r_buff0_thd2 >= 0LL && (0LL - (long long )y$r_buff0_thd0) + (long long )y$r_buff1_thd0 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$r_buff1_thd2 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$w_buff1 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$r_buff1_thd0 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$r_buff1_thd2 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$w_buff1 >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$r_buff1_thd2 >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$w_buff1 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$read_delayed >= 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) && (0LL - (long long )y$read_delayed) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$read_delayed) + (long long )y$w_buff1 >= 0LL) && (2LL - (long long )y$w_buff0) + (long long )y$w_buff1 >= 0LL) && (long long )__unbuffered_cnt + (long long )__unbuffered_p1_EAX >= 0LL) && (long long )__unbuffered_cnt + (long long )__unbuffered_p1_EBX >= 0LL) && (long long )__unbuffered_cnt + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_cnt + (long long )x >= 0LL) && (long long )__unbuffered_cnt + (long long )y >= 0LL) && (long long )__unbuffered_cnt + (long long )y$flush_delayed >= 0LL) && (long long )__unbuffered_cnt + (long long )y$mem_tmp >= 0LL) && (long long )__unbuffered_cnt + (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$r_buff0_thd2 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$r_buff1_thd2 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_cnt + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$w_buff1 >= 0LL) && (long long )__unbuffered_cnt + (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_cnt + (long long )weak$$choice2 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )__unbuffered_p1_EBX >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$flush_delayed >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$mem_tmp >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$r_buff0_thd2 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$r_buff1_thd2 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$w_buff1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )weak$$choice2 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )x >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$flush_delayed >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$mem_tmp >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$r_buff0_thd2 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$r_buff1_thd2 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$w_buff1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )weak$$choice2 >= 0LL) && (long long )main$tmp_guard1 + (long long )x >= 0LL) && (long long )main$tmp_guard1 + (long long )y >= 0LL) && (long long )main$tmp_guard1 + (long long )y$flush_delayed >= 0LL) && (long long )main$tmp_guard1 + (long long )y$mem_tmp >= 0LL) && (long long )main$tmp_guard1 + (long long )y$r_buff0_thd0 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$r_buff0_thd2 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$r_buff1_thd2 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$read_delayed >= 0LL) && (long long )main$tmp_guard1 + (long long )y$w_buff0 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$w_buff1 >= 0LL) && (long long )main$tmp_guard1 + (long long )weak$$choice0 >= 0LL) && (long long )main$tmp_guard1 + (long long )weak$$choice2 >= 0LL) && (long long )x + (long long )y >= 0LL) && (long long )x + (long long )y$flush_delayed >= 0LL) && (long long )x + (long long )y$mem_tmp >= 0LL) && (long long )x + (long long )y$r_buff0_thd0 >= 0LL) && (long long )x + (long long )y$r_buff0_thd2 >= 0LL) && (long long )x + (long long )y$r_buff1_thd0 >= 0LL) && (long long )x + (long long )y$r_buff1_thd2 >= 0LL) && (long long )x + (long long )y$read_delayed >= 0LL) && (long long )x + (long long )y$w_buff0 >= 0LL) && (long long )x + (long long )y$w_buff1 >= 0LL) && (long long )y + (long long )y$flush_delayed >= 0LL) && (long long )y + (long long )y$mem_tmp >= 0LL) && (long long )y + (long long )y$r_buff0_thd0 >= 0LL) && (long long )y + (long long )y$r_buff0_thd2 >= 0LL) && (long long )y + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y + (long long )y$r_buff1_thd2 >= 0LL) && (long long )y + (long long )y$read_delayed >= 0LL) && (long long )y + (long long )y$w_buff0 >= 0LL) && (long long )y + (long long )y$w_buff1 >= 0LL) && (long long )y$flush_delayed + (long long )y$mem_tmp >= 0LL) && (long long )y$flush_delayed + (long long )y$r_buff0_thd0 >= 0LL) && (long long )y$flush_delayed + (long long )y$r_buff0_thd2 >= 0LL) && (long long )y$flush_delayed + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$flush_delayed + (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$flush_delayed + (long long )y$read_delayed >= 0LL) && (long long )y$flush_delayed + (long long )y$w_buff0 >= 0LL) && (long long )y$flush_delayed + (long long )y$w_buff1 >= 0LL) && (long long )y$mem_tmp + (long long )y$r_buff0_thd0 >= 0LL) && (long long )y$mem_tmp + (long long )y$r_buff0_thd2 >= 0LL) && (long long )y$mem_tmp + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$mem_tmp + (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$mem_tmp + (long long )y$read_delayed >= 0LL) && (long long )y$mem_tmp + (long long )y$w_buff0 >= 0LL) && (long long )y$mem_tmp + (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$r_buff0_thd2 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd2 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd2 + (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd2 + (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd2 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd2 + (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$read_delayed >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff1_thd2 + (long long )y$read_delayed >= 0LL) && (long long )y$r_buff1_thd2 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd2 + (long long )y$w_buff1 >= 0LL) && (long long )y$read_delayed + (long long )y$w_buff0 >= 0LL) && (long long )y$read_delayed + (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 + (long long )y$w_buff1 >= 0LL) && (long long )weak$$choice0 + (long long )x >= 0LL) && (long long )weak$$choice0 + (long long )y >= 0LL) && (long long )weak$$choice0 + (long long )y$flush_delayed >= 0LL) && (long long )weak$$choice0 + (long long )y$mem_tmp >= 0LL) && (long long )weak$$choice0 + (long long )y$r_buff0_thd0 >= 0LL) && (long long )weak$$choice0 + (long long )y$r_buff0_thd2 >= 0LL) && (long long )weak$$choice0 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )weak$$choice0 + (long long )y$r_buff1_thd2 >= 0LL) && (long long )weak$$choice0 + (long long )y$read_delayed >= 0LL) && (long long )weak$$choice0 + (long long )y$w_buff0 >= 0LL) && (long long )weak$$choice0 + (long long )y$w_buff1 >= 0LL) && (long long )weak$$choice0 + (long long )weak$$choice2 >= 0LL) && (long long )weak$$choice2 + (long long )x >= 0LL) && (long long )weak$$choice2 + (long long )y >= 0LL) && (long long )weak$$choice2 + (long long )y$flush_delayed >= 0LL) && (long long )weak$$choice2 + (long long )y$mem_tmp >= 0LL) && (long long )weak$$choice2 + (long long )y$r_buff0_thd0 >= 0LL) && (long long )weak$$choice2 + (long long )y$r_buff0_thd2 >= 0LL) && (long long )weak$$choice2 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )weak$$choice2 + (long long )y$r_buff1_thd2 >= 0LL) && (long long )weak$$choice2 + (long long )y$read_delayed >= 0LL) && (long long )weak$$choice2 + (long long )y$w_buff0 >= 0LL) && (long long )weak$$choice2 + (long long )y$w_buff1 >= 0LL) && (2LL + (long long )__unbuffered_cnt) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )__unbuffered_cnt) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )__unbuffered_p1_EAX) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )__unbuffered_p1_EAX) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )__unbuffered_p1_EBX) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )__unbuffered_p1_EBX) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )main$tmp_guard1) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )main$tmp_guard1) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )x) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )x) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )y) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )y) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )y$flush_delayed) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )y$flush_delayed) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )y$mem_tmp) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )y$mem_tmp) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )y$r_buff0_thd0) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )y$r_buff0_thd0) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )y$r_buff0_thd2) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )y$r_buff0_thd2) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )y$r_buff1_thd0) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )y$r_buff1_thd0) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )y$r_buff1_thd2) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )y$r_buff1_thd2) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )y$read_delayed) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )y$read_delayed) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )weak$$choice0) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )weak$$choice0) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )weak$$choice2) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )weak$$choice2) - (long long )y$w_buff1 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) - (long long )y$r_buff0_thd2 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) - (long long )y$r_buff1_thd0 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) - (long long )y$r_buff1_thd2 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) - (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff0_thd2) - (long long )y$r_buff1_thd0 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) - (long long )y$r_buff1_thd2 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) - (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff1_thd0) - (long long )y$r_buff1_thd2 >= 0LL) && (0LL - (long long )y$r_buff1_thd0) - (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff1_thd2) - (long long )y$read_delayed >= 0LL) && (2LL - (long long )y$r_buff0_thd0) - (long long )y$w_buff0 >= 0LL) && (2LL - (long long )y$r_buff0_thd0) - (long long )y$w_buff1 >= 0LL) && (2LL - (long long )y$r_buff0_thd2) - (long long )y$w_buff0 >= 0LL) && (2LL - (long long )y$r_buff0_thd2) - (long long )y$w_buff1 >= 0LL) && (2LL - (long long )y$r_buff1_thd0) - (long long )y$w_buff0 >= 0LL) && (2LL - (long long )y$r_buff1_thd0) - (long long )y$w_buff1 >= 0LL) && (2LL - (long long )y$r_buff1_thd2) - (long long )y$w_buff0 >= 0LL) && (2LL - (long long )y$r_buff1_thd2) - (long long )y$w_buff1 >= 0LL) && (2LL - (long long )y$read_delayed) - (long long )y$w_buff0 >= 0LL) && (2LL - (long long )y$read_delayed) - (long long )y$w_buff1 >= 0LL) && (4LL - (long long )y$w_buff0) - (long long )y$w_buff1 >= 0LL) && (long long )__unbuffered_cnt - (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_cnt - (long long )y$r_buff0_thd2 >= 0LL) && (long long )__unbuffered_cnt - (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_cnt - (long long )y$r_buff1_thd2 >= 0LL) && (long long )__unbuffered_cnt - (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$r_buff0_thd2 >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$r_buff1_thd2 >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$r_buff0_thd2 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$r_buff1_thd2 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$read_delayed >= 0LL) && (long long )main$tmp_guard1 - (long long )y$r_buff0_thd0 >= 0LL) && (long long )main$tmp_guard1 - (long long )y$r_buff0_thd2 >= 0LL) && (long long )main$tmp_guard1 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )main$tmp_guard1 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )main$tmp_guard1 - (long long )y$read_delayed >= 0LL) && (long long )x - (long long )y$r_buff0_thd0 >= 0LL) && (long long )x - (long long )y$r_buff0_thd2 >= 0LL) && (long long )x - (long long )y$r_buff1_thd0 >= 0LL) && (long long )x - (long long )y$r_buff1_thd2 >= 0LL) && (long long )x - (long long )y$read_delayed >= 0LL) && (long long )y - (long long )y$r_buff0_thd0 >= 0LL) && (long long )y - (long long )y$r_buff0_thd2 >= 0LL) && (long long )y - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y - (long long )y$read_delayed >= 0LL) && (long long )y$flush_delayed - (long long )y$r_buff0_thd0 >= 0LL) && (long long )y$flush_delayed - (long long )y$r_buff0_thd2 >= 0LL) && (long long )y$flush_delayed - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$flush_delayed - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$flush_delayed - (long long )y$read_delayed >= 0LL) && (long long )y$mem_tmp - (long long )y$r_buff0_thd0 >= 0LL) && (long long )y$mem_tmp - (long long )y$r_buff0_thd2 >= 0LL) && (long long )y$mem_tmp - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$mem_tmp - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$mem_tmp - (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd0 - (long long )y$r_buff0_thd2 >= 0LL) && (long long )y$r_buff0_thd0 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd0 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd0 - (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$read_delayed >= 0LL) && (long long )y$r_buff1_thd0 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff1_thd0 - (long long )y$read_delayed >= 0LL) && (long long )y$r_buff1_thd2 - (long long )y$read_delayed >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )weak$$choice0 - (long long )y$r_buff0_thd0 >= 0LL) && (long long )weak$$choice0 - (long long )y$r_buff0_thd2 >= 0LL) && (long long )weak$$choice0 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )weak$$choice0 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )weak$$choice0 - (long long )y$read_delayed >= 0LL) && (long long )weak$$choice2 - (long long )y$flush_delayed >= 0LL) && (long long )weak$$choice2 - (long long )y$r_buff0_thd0 >= 0LL) && (long long )weak$$choice2 - (long long )y$r_buff0_thd2 >= 0LL) && (long long )weak$$choice2 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )weak$$choice2 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )weak$$choice2 - (long long )y$read_delayed >= 0LL)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && 0 <= __unbuffered_p1_EAX) && 0 <= __unbuffered_p1_EBX) && 0 <= x) && 0 <= y) && 0 <= y$mem_tmp) && 0 <= y$w_buff0) && 0 <= y$w_buff1) && __unbuffered_p1_EAX <= 127) && __unbuffered_p1_EBX <= 127) && y <= 127) && y$mem_tmp <= 127) && y$w_buff0 <= 2) && y$w_buff0 <= 127) && y$w_buff1 <= 2) && y$w_buff1 <= 127) && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && y$w_buff0 % 2 == 0) && y$w_buff1 % 2 == 0) && (y$w_buff0 == 0 || y$w_buff0 == 2)) && (y$w_buff1 == 0 || y$w_buff1 == 2)) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)) && ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2)) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= y && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 127) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)))) && (! multithreaded || ((0 <= y$mem_tmp && y$mem_tmp <= 127) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || ((((0 <= y$w_buff0 && y$w_buff0 <= 2) && y$w_buff0 <= 127) && y$w_buff0 % 2 == 0) && (y$w_buff0 == 0 || y$w_buff0 == 2)))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((((0 <= y$w_buff1 && y$w_buff1 <= 2) && y$w_buff1 <= 127) && y$w_buff1 % 2 == 0) && (y$w_buff1 == 0 || y$w_buff1 == 2)))) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 127) && ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2)))) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-04 17:41:17,316 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-04 17:41:17,316 INFO L106 edCorrectnessWitness]: ghost_update [L827-L827] multithreaded = 1; [2024-06-04 17:41:17,355 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-04 17:41:17,697 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 17:41:17,704 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-04 17:41:17,909 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 17:41:17,954 INFO L206 MainTranslator]: Completed translation [2024-06-04 17:41:17,955 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 05:41:17 WrapperNode [2024-06-04 17:41:17,955 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-04 17:41:17,957 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-04 17:41:17,957 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-04 17:41:17,957 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-04 17:41:17,963 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 05:41:17" (1/1) ... [2024-06-04 17:41:18,063 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 05:41:17" (1/1) ... [2024-06-04 17:41:18,114 INFO L138 Inliner]: procedures = 174, calls = 38, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 132 [2024-06-04 17:41:18,114 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-04 17:41:18,115 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-04 17:41:18,115 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-04 17:41:18,115 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-04 17:41:18,124 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 05:41:17" (1/1) ... [2024-06-04 17:41:18,124 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 05:41:17" (1/1) ... [2024-06-04 17:41:18,131 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 05:41:17" (1/1) ... [2024-06-04 17:41:18,147 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]. [2024-06-04 17:41:18,147 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 05:41:17" (1/1) ... [2024-06-04 17:41:18,147 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 05:41:17" (1/1) ... [2024-06-04 17:41:18,160 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 05:41:17" (1/1) ... [2024-06-04 17:41:18,162 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 05:41:17" (1/1) ... [2024-06-04 17:41:18,165 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 05:41:17" (1/1) ... [2024-06-04 17:41:18,169 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 05:41:17" (1/1) ... [2024-06-04 17:41:18,176 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-04 17:41:18,177 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-04 17:41:18,177 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-04 17:41:18,177 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-04 17:41:18,177 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 05:41:17" (1/1) ... [2024-06-04 17:41:18,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 17:41:18,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-04 17:41:18,198 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) [2024-06-04 17:41:18,205 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 [2024-06-04 17:41:18,227 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-04 17:41:18,227 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-04 17:41:18,227 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-04 17:41:18,227 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-04 17:41:18,228 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-04 17:41:18,228 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-04 17:41:18,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-04 17:41:18,228 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-04 17:41:18,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-04 17:41:18,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-04 17:41:18,229 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-04 17:41:18,358 INFO L244 CfgBuilder]: Building ICFG [2024-06-04 17:41:18,361 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-04 17:41:19,093 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-04 17:41:19,093 INFO L293 CfgBuilder]: Performing block encoding [2024-06-04 17:41:19,301 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-04 17:41:19,301 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-04 17:41:19,302 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 05:41:19 BoogieIcfgContainer [2024-06-04 17:41:19,303 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-04 17:41:19,304 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-04 17:41:19,305 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-04 17:41:19,307 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-04 17:41:19,307 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.06 05:41:17" (1/4) ... [2024-06-04 17:41:19,308 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17050e84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.06 05:41:19, skipping insertion in model container [2024-06-04 17:41:19,308 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 05:41:17" (2/4) ... [2024-06-04 17:41:19,311 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17050e84 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 04.06 05:41:19, skipping insertion in model container [2024-06-04 17:41:19,311 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 05:41:17" (3/4) ... [2024-06-04 17:41:19,312 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17050e84 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 04.06 05:41:19, skipping insertion in model container [2024-06-04 17:41:19,312 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 05:41:19" (4/4) ... [2024-06-04 17:41:19,313 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi000_power.oepc_pso.oepc_rmo.oepc.i [2024-06-04 17:41:19,325 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-04 17:41:19,325 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-04 17:41:19,325 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-04 17:41:19,377 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-04 17:41:19,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 32 transitions, 72 flow [2024-06-04 17:41:19,438 INFO L124 PetriNetUnfolderBase]: 0/30 cut-off events. [2024-06-04 17:41:19,438 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-04 17:41:19,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 30 events. 0/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 39 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-04 17:41:19,441 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 32 transitions, 72 flow [2024-06-04 17:41:19,443 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 24 transitions, 54 flow [2024-06-04 17:41:19,451 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-04 17:41:19,457 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;@210d18d5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-04 17:41:19,458 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-04 17:41:19,462 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-04 17:41:19,463 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-06-04 17:41:19,463 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-04 17:41:19,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:41:19,463 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-04 17:41:19,464 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)] === [2024-06-04 17:41:19,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:41:19,468 INFO L85 PathProgramCache]: Analyzing trace with hash -429952030, now seen corresponding path program 1 times [2024-06-04 17:41:19,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:41:19,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227941263] [2024-06-04 17:41:19,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:41:19,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:41:19,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:41:22,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:41:22,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:41:22,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227941263] [2024-06-04 17:41:22,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227941263] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:41:22,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:41:22,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-04 17:41:22,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232651745] [2024-06-04 17:41:22,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:41:22,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-04 17:41:22,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:41:22,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-04 17:41:22,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-04 17:41:22,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 17:41:22,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:41:22,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:41:22,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 17:41:22,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:41:22,656 INFO L124 PetriNetUnfolderBase]: 216/387 cut-off events. [2024-06-04 17:41:22,656 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-04 17:41:22,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 790 conditions, 387 events. 216/387 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1364 event pairs, 133 based on Foata normal form. 1/383 useless extension candidates. Maximal degree in co-relation 776. Up to 378 conditions per place. [2024-06-04 17:41:22,661 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 25 selfloop transitions, 3 changer transitions 0/30 dead transitions. [2024-06-04 17:41:22,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 30 transitions, 125 flow [2024-06-04 17:41:22,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-04 17:41:22,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-04 17:41:22,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 48 transitions. [2024-06-04 17:41:22,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-04 17:41:22,671 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 54 flow. Second operand 3 states and 48 transitions. [2024-06-04 17:41:22,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 30 transitions, 125 flow [2024-06-04 17:41:22,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 30 transitions, 122 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-04 17:41:22,675 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 73 flow [2024-06-04 17:41:22,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2024-06-04 17:41:22,679 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2024-06-04 17:41:22,679 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 73 flow [2024-06-04 17:41:22,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:41:22,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:41:22,680 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:41:22,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-04 17:41:22,680 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)] === [2024-06-04 17:41:22,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:41:22,681 INFO L85 PathProgramCache]: Analyzing trace with hash -867008575, now seen corresponding path program 1 times [2024-06-04 17:41:22,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:41:22,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630938686] [2024-06-04 17:41:22,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:41:22,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:41:22,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:41:24,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:41:24,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:41:24,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630938686] [2024-06-04 17:41:24,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630938686] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:41:24,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:41:24,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-04 17:41:24,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498262301] [2024-06-04 17:41:24,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:41:24,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-04 17:41:24,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:41:24,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-04 17:41:24,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-04 17:41:24,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 17:41:24,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 73 flow. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 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) [2024-06-04 17:41:24,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:41:24,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 17:41:24,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:41:24,993 INFO L124 PetriNetUnfolderBase]: 213/382 cut-off events. [2024-06-04 17:41:24,993 INFO L125 PetriNetUnfolderBase]: For 76/76 co-relation queries the response was YES. [2024-06-04 17:41:24,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 880 conditions, 382 events. 213/382 cut-off events. For 76/76 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1329 event pairs, 109 based on Foata normal form. 2/384 useless extension candidates. Maximal degree in co-relation 865. Up to 364 conditions per place. [2024-06-04 17:41:24,998 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 29 selfloop transitions, 5 changer transitions 0/36 dead transitions. [2024-06-04 17:41:24,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 36 transitions, 167 flow [2024-06-04 17:41:24,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-04 17:41:24,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-04 17:41:25,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 60 transitions. [2024-06-04 17:41:25,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46875 [2024-06-04 17:41:25,002 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 73 flow. Second operand 4 states and 60 transitions. [2024-06-04 17:41:25,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 36 transitions, 167 flow [2024-06-04 17:41:25,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 36 transitions, 164 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-04 17:41:25,006 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 97 flow [2024-06-04 17:41:25,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=97, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2024-06-04 17:41:25,008 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 4 predicate places. [2024-06-04 17:41:25,008 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 97 flow [2024-06-04 17:41:25,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 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) [2024-06-04 17:41:25,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:41:25,008 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:41:25,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-04 17:41:25,009 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)] === [2024-06-04 17:41:25,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:41:25,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1107460993, now seen corresponding path program 1 times [2024-06-04 17:41:25,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:41:25,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513815766] [2024-06-04 17:41:25,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:41:25,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:41:25,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:41:26,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:41:26,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:41:26,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513815766] [2024-06-04 17:41:26,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513815766] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:41:26,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:41:26,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-04 17:41:26,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491374129] [2024-06-04 17:41:26,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:41:26,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-04 17:41:26,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:41:26,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-04 17:41:26,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-04 17:41:26,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 17:41:26,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 97 flow. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:41:26,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:41:26,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 17:41:26,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:41:27,174 INFO L124 PetriNetUnfolderBase]: 214/384 cut-off events. [2024-06-04 17:41:27,174 INFO L125 PetriNetUnfolderBase]: For 221/221 co-relation queries the response was YES. [2024-06-04 17:41:27,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 977 conditions, 384 events. 214/384 cut-off events. For 221/221 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1354 event pairs, 78 based on Foata normal form. 3/387 useless extension candidates. Maximal degree in co-relation 960. Up to 338 conditions per place. [2024-06-04 17:41:27,177 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 37 selfloop transitions, 11 changer transitions 0/50 dead transitions. [2024-06-04 17:41:27,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 50 transitions, 259 flow [2024-06-04 17:41:27,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 17:41:27,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 17:41:27,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 78 transitions. [2024-06-04 17:41:27,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4875 [2024-06-04 17:41:27,180 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 97 flow. Second operand 5 states and 78 transitions. [2024-06-04 17:41:27,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 50 transitions, 259 flow [2024-06-04 17:41:27,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 50 transitions, 250 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-04 17:41:27,183 INFO L231 Difference]: Finished difference. Result has 40 places, 36 transitions, 164 flow [2024-06-04 17:41:27,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=164, PETRI_PLACES=40, PETRI_TRANSITIONS=36} [2024-06-04 17:41:27,184 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 9 predicate places. [2024-06-04 17:41:27,184 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 36 transitions, 164 flow [2024-06-04 17:41:27,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:41:27,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:41:27,185 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:41:27,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-04 17:41:27,186 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)] === [2024-06-04 17:41:27,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:41:27,186 INFO L85 PathProgramCache]: Analyzing trace with hash 28448672, now seen corresponding path program 1 times [2024-06-04 17:41:27,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:41:27,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416504509] [2024-06-04 17:41:27,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:41:27,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:41:27,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:41:29,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:41:29,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:41:29,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416504509] [2024-06-04 17:41:29,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416504509] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:41:29,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:41:29,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 17:41:29,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508444092] [2024-06-04 17:41:29,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:41:29,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 17:41:29,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:41:29,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 17:41:29,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-04 17:41:29,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 17:41:29,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 36 transitions, 164 flow. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:41:29,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:41:29,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 17:41:29,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:41:29,704 INFO L124 PetriNetUnfolderBase]: 224/401 cut-off events. [2024-06-04 17:41:29,704 INFO L125 PetriNetUnfolderBase]: For 487/487 co-relation queries the response was YES. [2024-06-04 17:41:29,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1205 conditions, 401 events. 224/401 cut-off events. For 487/487 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1439 event pairs, 48 based on Foata normal form. 4/405 useless extension candidates. Maximal degree in co-relation 1185. Up to 312 conditions per place. [2024-06-04 17:41:29,706 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 45 selfloop transitions, 19 changer transitions 0/66 dead transitions. [2024-06-04 17:41:29,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 66 transitions, 398 flow [2024-06-04 17:41:29,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 17:41:29,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 17:41:29,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 96 transitions. [2024-06-04 17:41:29,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-04 17:41:29,710 INFO L175 Difference]: Start difference. First operand has 40 places, 36 transitions, 164 flow. Second operand 6 states and 96 transitions. [2024-06-04 17:41:29,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 66 transitions, 398 flow [2024-06-04 17:41:29,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 66 transitions, 394 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-04 17:41:29,715 INFO L231 Difference]: Finished difference. Result has 48 places, 47 transitions, 279 flow [2024-06-04 17:41:29,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=279, PETRI_PLACES=48, PETRI_TRANSITIONS=47} [2024-06-04 17:41:29,717 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 17 predicate places. [2024-06-04 17:41:29,717 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 47 transitions, 279 flow [2024-06-04 17:41:29,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:41:29,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:41:29,717 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:41:29,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-04 17:41:29,718 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 17:41:29,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:41:29,718 INFO L85 PathProgramCache]: Analyzing trace with hash -837623048, now seen corresponding path program 1 times [2024-06-04 17:41:29,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:41:29,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432756854] [2024-06-04 17:41:29,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:41:29,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:41:29,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:41:32,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:41:32,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:41:32,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432756854] [2024-06-04 17:41:32,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432756854] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:41:32,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:41:32,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 17:41:32,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295463131] [2024-06-04 17:41:32,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:41:32,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 17:41:32,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:41:32,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 17:41:32,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-04 17:41:32,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 17:41:32,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 47 transitions, 279 flow. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 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) [2024-06-04 17:41:32,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:41:32,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 17:41:32,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:41:32,423 INFO L124 PetriNetUnfolderBase]: 225/404 cut-off events. [2024-06-04 17:41:32,424 INFO L125 PetriNetUnfolderBase]: For 897/897 co-relation queries the response was YES. [2024-06-04 17:41:32,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1465 conditions, 404 events. 225/404 cut-off events. For 897/897 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1451 event pairs, 29 based on Foata normal form. 6/410 useless extension candidates. Maximal degree in co-relation 1440. Up to 319 conditions per place. [2024-06-04 17:41:32,426 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 50 selfloop transitions, 16 changer transitions 0/68 dead transitions. [2024-06-04 17:41:32,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 68 transitions, 476 flow [2024-06-04 17:41:32,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 17:41:32,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 17:41:32,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 99 transitions. [2024-06-04 17:41:32,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4419642857142857 [2024-06-04 17:41:32,428 INFO L175 Difference]: Start difference. First operand has 48 places, 47 transitions, 279 flow. Second operand 7 states and 99 transitions. [2024-06-04 17:41:32,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 68 transitions, 476 flow [2024-06-04 17:41:32,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 68 transitions, 464 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-06-04 17:41:32,431 INFO L231 Difference]: Finished difference. Result has 55 places, 48 transitions, 313 flow [2024-06-04 17:41:32,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=313, PETRI_PLACES=55, PETRI_TRANSITIONS=48} [2024-06-04 17:41:32,432 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 24 predicate places. [2024-06-04 17:41:32,432 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 48 transitions, 313 flow [2024-06-04 17:41:32,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 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) [2024-06-04 17:41:32,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:41:32,432 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:41:32,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-04 17:41:32,433 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)] === [2024-06-04 17:41:32,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:41:32,433 INFO L85 PathProgramCache]: Analyzing trace with hash 352855075, now seen corresponding path program 1 times [2024-06-04 17:41:32,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:41:32,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825647501] [2024-06-04 17:41:32,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:41:32,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:41:32,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:41:36,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:41:36,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:41:36,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825647501] [2024-06-04 17:41:36,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825647501] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:41:36,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:41:36,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 17:41:36,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407031309] [2024-06-04 17:41:36,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:41:36,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 17:41:36,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:41:36,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 17:41:36,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-04 17:41:36,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:41:36,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 48 transitions, 313 flow. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:41:36,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:41:36,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:41:36,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:41:36,792 INFO L124 PetriNetUnfolderBase]: 223/401 cut-off events. [2024-06-04 17:41:36,793 INFO L125 PetriNetUnfolderBase]: For 1023/1023 co-relation queries the response was YES. [2024-06-04 17:41:36,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1552 conditions, 401 events. 223/401 cut-off events. For 1023/1023 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1427 event pairs, 57 based on Foata normal form. 1/402 useless extension candidates. Maximal degree in co-relation 1523. Up to 389 conditions per place. [2024-06-04 17:41:36,797 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 45 selfloop transitions, 6 changer transitions 0/53 dead transitions. [2024-06-04 17:41:36,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 53 transitions, 427 flow [2024-06-04 17:41:36,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 17:41:36,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 17:41:36,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 56 transitions. [2024-06-04 17:41:36,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-04 17:41:36,799 INFO L175 Difference]: Start difference. First operand has 55 places, 48 transitions, 313 flow. Second operand 5 states and 56 transitions. [2024-06-04 17:41:36,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 53 transitions, 427 flow [2024-06-04 17:41:36,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 53 transitions, 390 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-04 17:41:36,802 INFO L231 Difference]: Finished difference. Result has 56 places, 48 transitions, 293 flow [2024-06-04 17:41:36,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=293, PETRI_PLACES=56, PETRI_TRANSITIONS=48} [2024-06-04 17:41:36,805 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 25 predicate places. [2024-06-04 17:41:36,805 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 293 flow [2024-06-04 17:41:36,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:41:36,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:41:36,806 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:41:36,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-04 17:41:36,806 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)] === [2024-06-04 17:41:36,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:41:36,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1946796671, now seen corresponding path program 1 times [2024-06-04 17:41:36,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:41:36,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545087210] [2024-06-04 17:41:36,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:41:36,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:41:36,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:41:41,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:41:41,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:41:41,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545087210] [2024-06-04 17:41:41,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545087210] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:41:41,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:41:41,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 17:41:41,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025475470] [2024-06-04 17:41:41,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:41:41,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 17:41:41,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:41:41,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 17:41:41,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-04 17:41:41,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:41:41,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 293 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:41:41,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:41:41,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:41:41,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:41:41,515 INFO L124 PetriNetUnfolderBase]: 221/398 cut-off events. [2024-06-04 17:41:41,515 INFO L125 PetriNetUnfolderBase]: For 1189/1189 co-relation queries the response was YES. [2024-06-04 17:41:41,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1519 conditions, 398 events. 221/398 cut-off events. For 1189/1189 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1428 event pairs, 56 based on Foata normal form. 1/399 useless extension candidates. Maximal degree in co-relation 1488. Up to 383 conditions per place. [2024-06-04 17:41:41,518 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 44 selfloop transitions, 8 changer transitions 0/54 dead transitions. [2024-06-04 17:41:41,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 54 transitions, 411 flow [2024-06-04 17:41:41,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 17:41:41,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 17:41:41,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 64 transitions. [2024-06-04 17:41:41,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-04 17:41:41,520 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 293 flow. Second operand 6 states and 64 transitions. [2024-06-04 17:41:41,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 54 transitions, 411 flow [2024-06-04 17:41:41,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 54 transitions, 396 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-04 17:41:41,524 INFO L231 Difference]: Finished difference. Result has 58 places, 48 transitions, 299 flow [2024-06-04 17:41:41,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=299, PETRI_PLACES=58, PETRI_TRANSITIONS=48} [2024-06-04 17:41:41,525 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 27 predicate places. [2024-06-04 17:41:41,525 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 48 transitions, 299 flow [2024-06-04 17:41:41,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:41:41,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:41:41,526 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:41:41,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-04 17:41:41,527 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)] === [2024-06-04 17:41:41,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:41:41,527 INFO L85 PathProgramCache]: Analyzing trace with hash -587048160, now seen corresponding path program 1 times [2024-06-04 17:41:41,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:41:41,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038660606] [2024-06-04 17:41:41,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:41:41,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:41:41,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:41:45,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:41:45,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:41:45,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038660606] [2024-06-04 17:41:45,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038660606] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:41:45,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:41:45,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 17:41:45,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764189256] [2024-06-04 17:41:45,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:41:45,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 17:41:45,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:41:45,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 17:41:45,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-04 17:41:45,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:41:45,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 48 transitions, 299 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:41:45,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:41:45,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:41:45,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:41:45,527 INFO L124 PetriNetUnfolderBase]: 222/400 cut-off events. [2024-06-04 17:41:45,527 INFO L125 PetriNetUnfolderBase]: For 1433/1433 co-relation queries the response was YES. [2024-06-04 17:41:45,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1573 conditions, 400 events. 222/400 cut-off events. For 1433/1433 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1432 event pairs, 54 based on Foata normal form. 2/402 useless extension candidates. Maximal degree in co-relation 1542. Up to 354 conditions per place. [2024-06-04 17:41:45,530 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 45 selfloop transitions, 13 changer transitions 0/60 dead transitions. [2024-06-04 17:41:45,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 60 transitions, 469 flow [2024-06-04 17:41:45,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 17:41:45,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 17:41:45,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 72 transitions. [2024-06-04 17:41:45,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-04 17:41:45,532 INFO L175 Difference]: Start difference. First operand has 58 places, 48 transitions, 299 flow. Second operand 6 states and 72 transitions. [2024-06-04 17:41:45,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 60 transitions, 469 flow [2024-06-04 17:41:45,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 60 transitions, 443 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-04 17:41:45,535 INFO L231 Difference]: Finished difference. Result has 58 places, 50 transitions, 324 flow [2024-06-04 17:41:45,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=324, PETRI_PLACES=58, PETRI_TRANSITIONS=50} [2024-06-04 17:41:45,538 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 27 predicate places. [2024-06-04 17:41:45,540 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 50 transitions, 324 flow [2024-06-04 17:41:45,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:41:45,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:41:45,540 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:41:45,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-04 17:41:45,540 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)] === [2024-06-04 17:41:45,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:41:45,541 INFO L85 PathProgramCache]: Analyzing trace with hash -208648830, now seen corresponding path program 2 times [2024-06-04 17:41:45,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:41:45,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121810929] [2024-06-04 17:41:45,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:41:45,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:41:45,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:41:49,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:41:49,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:41:49,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121810929] [2024-06-04 17:41:49,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121810929] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:41:49,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:41:49,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 17:41:49,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918918716] [2024-06-04 17:41:49,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:41:49,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 17:41:49,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:41:49,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 17:41:49,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-04 17:41:49,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:41:49,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 50 transitions, 324 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:41:49,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:41:49,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:41:49,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:41:49,385 INFO L124 PetriNetUnfolderBase]: 217/390 cut-off events. [2024-06-04 17:41:49,385 INFO L125 PetriNetUnfolderBase]: For 1640/1640 co-relation queries the response was YES. [2024-06-04 17:41:49,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1578 conditions, 390 events. 217/390 cut-off events. For 1640/1640 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1365 event pairs, 53 based on Foata normal form. 1/391 useless extension candidates. Maximal degree in co-relation 1548. Up to 375 conditions per place. [2024-06-04 17:41:49,388 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 46 selfloop transitions, 8 changer transitions 0/56 dead transitions. [2024-06-04 17:41:49,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 56 transitions, 446 flow [2024-06-04 17:41:49,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 17:41:49,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 17:41:49,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 64 transitions. [2024-06-04 17:41:49,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-04 17:41:49,390 INFO L175 Difference]: Start difference. First operand has 58 places, 50 transitions, 324 flow. Second operand 6 states and 64 transitions. [2024-06-04 17:41:49,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 56 transitions, 446 flow [2024-06-04 17:41:49,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 56 transitions, 431 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-04 17:41:49,413 INFO L231 Difference]: Finished difference. Result has 61 places, 50 transitions, 330 flow [2024-06-04 17:41:49,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=330, PETRI_PLACES=61, PETRI_TRANSITIONS=50} [2024-06-04 17:41:49,415 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 30 predicate places. [2024-06-04 17:41:49,415 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 50 transitions, 330 flow [2024-06-04 17:41:49,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:41:49,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:41:49,415 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:41:49,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-04 17:41:49,416 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)] === [2024-06-04 17:41:49,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:41:49,416 INFO L85 PathProgramCache]: Analyzing trace with hash -221153114, now seen corresponding path program 1 times [2024-06-04 17:41:49,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:41:49,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504857267] [2024-06-04 17:41:49,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:41:49,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:41:49,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:41:53,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:41:53,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:41:53,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504857267] [2024-06-04 17:41:53,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504857267] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:41:53,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:41:53,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 17:41:53,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307078048] [2024-06-04 17:41:53,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:41:53,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 17:41:53,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:41:53,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 17:41:53,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-04 17:41:53,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:41:53,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 50 transitions, 330 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) [2024-06-04 17:41:53,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:41:53,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:41:53,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:41:53,873 INFO L124 PetriNetUnfolderBase]: 215/387 cut-off events. [2024-06-04 17:41:53,873 INFO L125 PetriNetUnfolderBase]: For 1956/1956 co-relation queries the response was YES. [2024-06-04 17:41:53,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1599 conditions, 387 events. 215/387 cut-off events. For 1956/1956 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1357 event pairs, 52 based on Foata normal form. 1/388 useless extension candidates. Maximal degree in co-relation 1568. Up to 369 conditions per place. [2024-06-04 17:41:53,877 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 47 selfloop transitions, 10 changer transitions 0/59 dead transitions. [2024-06-04 17:41:53,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 59 transitions, 468 flow [2024-06-04 17:41:53,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 17:41:53,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 17:41:53,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 72 transitions. [2024-06-04 17:41:53,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32142857142857145 [2024-06-04 17:41:53,878 INFO L175 Difference]: Start difference. First operand has 61 places, 50 transitions, 330 flow. Second operand 7 states and 72 transitions. [2024-06-04 17:41:53,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 59 transitions, 468 flow [2024-06-04 17:41:53,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 59 transitions, 434 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-04 17:41:53,881 INFO L231 Difference]: Finished difference. Result has 62 places, 52 transitions, 333 flow [2024-06-04 17:41:53,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=333, PETRI_PLACES=62, PETRI_TRANSITIONS=52} [2024-06-04 17:41:53,883 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 31 predicate places. [2024-06-04 17:41:53,884 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 52 transitions, 333 flow [2024-06-04 17:41:53,884 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) [2024-06-04 17:41:53,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:41:53,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:41:53,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-04 17:41:53,885 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)] === [2024-06-04 17:41:53,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:41:53,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1018622264, now seen corresponding path program 1 times [2024-06-04 17:41:53,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:41:53,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720334631] [2024-06-04 17:41:53,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:41:53,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:41:53,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:41:57,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:41:57,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:41:57,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720334631] [2024-06-04 17:41:57,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720334631] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:41:57,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:41:57,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 17:41:57,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619925024] [2024-06-04 17:41:57,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:41:57,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 17:41:57,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:41:57,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 17:41:57,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-04 17:41:57,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:41:57,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 52 transitions, 333 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) [2024-06-04 17:41:57,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:41:57,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:41:57,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:41:58,045 INFO L124 PetriNetUnfolderBase]: 225/404 cut-off events. [2024-06-04 17:41:58,046 INFO L125 PetriNetUnfolderBase]: For 2376/2376 co-relation queries the response was YES. [2024-06-04 17:41:58,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1706 conditions, 404 events. 225/404 cut-off events. For 2376/2376 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1440 event pairs, 50 based on Foata normal form. 3/407 useless extension candidates. Maximal degree in co-relation 1674. Up to 302 conditions per place. [2024-06-04 17:41:58,052 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 45 selfloop transitions, 26 changer transitions 0/73 dead transitions. [2024-06-04 17:41:58,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 73 transitions, 589 flow [2024-06-04 17:41:58,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 17:41:58,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 17:41:58,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 88 transitions. [2024-06-04 17:41:58,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39285714285714285 [2024-06-04 17:41:58,054 INFO L175 Difference]: Start difference. First operand has 62 places, 52 transitions, 333 flow. Second operand 7 states and 88 transitions. [2024-06-04 17:41:58,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 73 transitions, 589 flow [2024-06-04 17:41:58,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 73 transitions, 568 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-04 17:41:58,062 INFO L231 Difference]: Finished difference. Result has 65 places, 61 transitions, 436 flow [2024-06-04 17:41:58,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=436, PETRI_PLACES=65, PETRI_TRANSITIONS=61} [2024-06-04 17:41:58,063 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 34 predicate places. [2024-06-04 17:41:58,063 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 61 transitions, 436 flow [2024-06-04 17:41:58,063 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) [2024-06-04 17:41:58,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:41:58,063 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:41:58,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-04 17:41:58,064 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)] === [2024-06-04 17:41:58,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:41:58,064 INFO L85 PathProgramCache]: Analyzing trace with hash 152396018, now seen corresponding path program 2 times [2024-06-04 17:41:58,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:41:58,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327676363] [2024-06-04 17:41:58,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:41:58,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:41:58,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:42:01,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:42:01,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:42:01,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327676363] [2024-06-04 17:42:01,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327676363] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:42:01,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:42:01,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 17:42:01,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732896184] [2024-06-04 17:42:01,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:42:01,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 17:42:01,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:42:01,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 17:42:01,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-04 17:42:01,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:42:01,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 61 transitions, 436 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) [2024-06-04 17:42:01,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:42:01,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:42:01,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:42:02,263 INFO L124 PetriNetUnfolderBase]: 228/409 cut-off events. [2024-06-04 17:42:02,264 INFO L125 PetriNetUnfolderBase]: For 2751/2751 co-relation queries the response was YES. [2024-06-04 17:42:02,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1887 conditions, 409 events. 228/409 cut-off events. For 2751/2751 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1467 event pairs, 49 based on Foata normal form. 1/410 useless extension candidates. Maximal degree in co-relation 1853. Up to 391 conditions per place. [2024-06-04 17:42:02,266 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 58 selfloop transitions, 10 changer transitions 0/70 dead transitions. [2024-06-04 17:42:02,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 70 transitions, 606 flow [2024-06-04 17:42:02,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 17:42:02,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 17:42:02,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 72 transitions. [2024-06-04 17:42:02,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32142857142857145 [2024-06-04 17:42:02,268 INFO L175 Difference]: Start difference. First operand has 65 places, 61 transitions, 436 flow. Second operand 7 states and 72 transitions. [2024-06-04 17:42:02,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 70 transitions, 606 flow [2024-06-04 17:42:02,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 70 transitions, 591 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-04 17:42:02,271 INFO L231 Difference]: Finished difference. Result has 70 places, 63 transitions, 468 flow [2024-06-04 17:42:02,272 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=421, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=468, PETRI_PLACES=70, PETRI_TRANSITIONS=63} [2024-06-04 17:42:02,272 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 39 predicate places. [2024-06-04 17:42:02,272 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 63 transitions, 468 flow [2024-06-04 17:42:02,272 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) [2024-06-04 17:42:02,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:42:02,273 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:42:02,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-04 17:42:02,273 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)] === [2024-06-04 17:42:02,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:42:02,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1733943554, now seen corresponding path program 3 times [2024-06-04 17:42:02,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:42:02,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907881884] [2024-06-04 17:42:02,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:42:02,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:42:02,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:42:05,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:42:05,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:42:05,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907881884] [2024-06-04 17:42:05,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907881884] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:42:05,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:42:05,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 17:42:05,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779636946] [2024-06-04 17:42:05,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:42:05,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 17:42:05,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:42:05,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 17:42:05,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-04 17:42:05,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:42:05,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 63 transitions, 468 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) [2024-06-04 17:42:05,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:42:05,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:42:05,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:42:06,142 INFO L124 PetriNetUnfolderBase]: 226/406 cut-off events. [2024-06-04 17:42:06,143 INFO L125 PetriNetUnfolderBase]: For 3140/3140 co-relation queries the response was YES. [2024-06-04 17:42:06,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1919 conditions, 406 events. 226/406 cut-off events. For 3140/3140 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1460 event pairs, 49 based on Foata normal form. 1/407 useless extension candidates. Maximal degree in co-relation 1883. Up to 382 conditions per place. [2024-06-04 17:42:06,146 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 55 selfloop transitions, 13 changer transitions 0/70 dead transitions. [2024-06-04 17:42:06,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 70 transitions, 620 flow [2024-06-04 17:42:06,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 17:42:06,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 17:42:06,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 74 transitions. [2024-06-04 17:42:06,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33035714285714285 [2024-06-04 17:42:06,148 INFO L175 Difference]: Start difference. First operand has 70 places, 63 transitions, 468 flow. Second operand 7 states and 74 transitions. [2024-06-04 17:42:06,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 70 transitions, 620 flow [2024-06-04 17:42:06,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 70 transitions, 597 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-04 17:42:06,153 INFO L231 Difference]: Finished difference. Result has 72 places, 63 transitions, 476 flow [2024-06-04 17:42:06,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=445, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=476, PETRI_PLACES=72, PETRI_TRANSITIONS=63} [2024-06-04 17:42:06,154 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 41 predicate places. [2024-06-04 17:42:06,154 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 63 transitions, 476 flow [2024-06-04 17:42:06,154 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) [2024-06-04 17:42:06,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:42:06,155 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:42:06,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-04 17:42:06,155 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)] === [2024-06-04 17:42:06,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:42:06,155 INFO L85 PathProgramCache]: Analyzing trace with hash -841244666, now seen corresponding path program 1 times [2024-06-04 17:42:06,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:42:06,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353040168] [2024-06-04 17:42:06,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:42:06,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:42:06,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:42:10,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:42:10,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:42:10,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353040168] [2024-06-04 17:42:10,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353040168] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:42:10,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:42:10,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 17:42:10,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299051929] [2024-06-04 17:42:10,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:42:10,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 17:42:10,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:42:10,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 17:42:10,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-04 17:42:10,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:42:10,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 63 transitions, 476 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) [2024-06-04 17:42:10,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:42:10,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:42:10,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:42:11,135 INFO L124 PetriNetUnfolderBase]: 222/400 cut-off events. [2024-06-04 17:42:11,135 INFO L125 PetriNetUnfolderBase]: For 3537/3537 co-relation queries the response was YES. [2024-06-04 17:42:11,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1919 conditions, 400 events. 222/400 cut-off events. For 3537/3537 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1422 event pairs, 47 based on Foata normal form. 2/402 useless extension candidates. Maximal degree in co-relation 1882. Up to 376 conditions per place. [2024-06-04 17:42:11,138 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 60 selfloop transitions, 12 changer transitions 0/74 dead transitions. [2024-06-04 17:42:11,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 74 transitions, 650 flow [2024-06-04 17:42:11,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 17:42:11,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 17:42:11,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 81 transitions. [2024-06-04 17:42:11,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31640625 [2024-06-04 17:42:11,140 INFO L175 Difference]: Start difference. First operand has 72 places, 63 transitions, 476 flow. Second operand 8 states and 81 transitions. [2024-06-04 17:42:11,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 74 transitions, 650 flow [2024-06-04 17:42:11,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 74 transitions, 608 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-04 17:42:11,146 INFO L231 Difference]: Finished difference. Result has 74 places, 65 transitions, 477 flow [2024-06-04 17:42:11,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=434, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=477, PETRI_PLACES=74, PETRI_TRANSITIONS=65} [2024-06-04 17:42:11,147 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 43 predicate places. [2024-06-04 17:42:11,147 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 65 transitions, 477 flow [2024-06-04 17:42:11,147 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) [2024-06-04 17:42:11,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:42:11,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:42:11,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-04 17:42:11,148 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)] === [2024-06-04 17:42:11,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:42:11,148 INFO L85 PathProgramCache]: Analyzing trace with hash 2013188553, now seen corresponding path program 1 times [2024-06-04 17:42:11,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:42:11,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957451868] [2024-06-04 17:42:11,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:42:11,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:42:11,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:42:15,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:42:15,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:42:15,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957451868] [2024-06-04 17:42:15,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957451868] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:42:15,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:42:15,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 17:42:15,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19783935] [2024-06-04 17:42:15,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:42:15,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 17:42:15,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:42:15,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 17:42:15,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-04 17:42:15,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:42:15,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 65 transitions, 477 flow. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 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) [2024-06-04 17:42:15,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:42:15,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:42:15,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:42:15,773 INFO L124 PetriNetUnfolderBase]: 225/405 cut-off events. [2024-06-04 17:42:15,773 INFO L125 PetriNetUnfolderBase]: For 3841/3841 co-relation queries the response was YES. [2024-06-04 17:42:15,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1982 conditions, 405 events. 225/405 cut-off events. For 3841/3841 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1441 event pairs, 47 based on Foata normal form. 1/406 useless extension candidates. Maximal degree in co-relation 1945. Up to 342 conditions per place. [2024-06-04 17:42:15,776 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 63 selfloop transitions, 17 changer transitions 0/82 dead transitions. [2024-06-04 17:42:15,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 82 transitions, 725 flow [2024-06-04 17:42:15,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 17:42:15,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 17:42:15,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 83 transitions. [2024-06-04 17:42:15,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3705357142857143 [2024-06-04 17:42:15,777 INFO L175 Difference]: Start difference. First operand has 74 places, 65 transitions, 477 flow. Second operand 7 states and 83 transitions. [2024-06-04 17:42:15,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 82 transitions, 725 flow [2024-06-04 17:42:15,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 82 transitions, 698 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-04 17:42:15,782 INFO L231 Difference]: Finished difference. Result has 75 places, 68 transitions, 517 flow [2024-06-04 17:42:15,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=450, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=517, PETRI_PLACES=75, PETRI_TRANSITIONS=68} [2024-06-04 17:42:15,783 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 44 predicate places. [2024-06-04 17:42:15,783 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 68 transitions, 517 flow [2024-06-04 17:42:15,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 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) [2024-06-04 17:42:15,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:42:15,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:42:15,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-04 17:42:15,784 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)] === [2024-06-04 17:42:15,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:42:15,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1613147621, now seen corresponding path program 2 times [2024-06-04 17:42:15,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:42:15,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374156414] [2024-06-04 17:42:15,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:42:15,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:42:15,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:42:19,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:42:19,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:42:19,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374156414] [2024-06-04 17:42:19,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374156414] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:42:19,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:42:19,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 17:42:19,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615494348] [2024-06-04 17:42:19,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:42:19,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 17:42:19,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:42:19,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 17:42:19,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-04 17:42:19,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:42:19,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 68 transitions, 517 flow. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 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) [2024-06-04 17:42:19,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:42:19,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:42:19,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:42:20,112 INFO L124 PetriNetUnfolderBase]: 222/400 cut-off events. [2024-06-04 17:42:20,112 INFO L125 PetriNetUnfolderBase]: For 4253/4253 co-relation queries the response was YES. [2024-06-04 17:42:20,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1997 conditions, 400 events. 222/400 cut-off events. For 4253/4253 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1414 event pairs, 47 based on Foata normal form. 1/401 useless extension candidates. Maximal degree in co-relation 1959. Up to 353 conditions per place. [2024-06-04 17:42:20,114 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 61 selfloop transitions, 15 changer transitions 0/78 dead transitions. [2024-06-04 17:42:20,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 78 transitions, 693 flow [2024-06-04 17:42:20,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 17:42:20,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 17:42:20,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 79 transitions. [2024-06-04 17:42:20,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35267857142857145 [2024-06-04 17:42:20,116 INFO L175 Difference]: Start difference. First operand has 75 places, 68 transitions, 517 flow. Second operand 7 states and 79 transitions. [2024-06-04 17:42:20,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 78 transitions, 693 flow [2024-06-04 17:42:20,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 78 transitions, 668 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-04 17:42:20,121 INFO L231 Difference]: Finished difference. Result has 79 places, 68 transitions, 527 flow [2024-06-04 17:42:20,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=527, PETRI_PLACES=79, PETRI_TRANSITIONS=68} [2024-06-04 17:42:20,122 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 48 predicate places. [2024-06-04 17:42:20,122 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 68 transitions, 527 flow [2024-06-04 17:42:20,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 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) [2024-06-04 17:42:20,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:42:20,123 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:42:20,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-04 17:42:20,124 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)] === [2024-06-04 17:42:20,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:42:20,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1512517786, now seen corresponding path program 1 times [2024-06-04 17:42:20,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:42:20,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480649097] [2024-06-04 17:42:20,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:42:20,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:42:20,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:42:23,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:42:23,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:42:23,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480649097] [2024-06-04 17:42:23,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480649097] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:42:23,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:42:23,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 17:42:23,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450283000] [2024-06-04 17:42:23,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:42:23,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 17:42:23,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:42:23,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 17:42:23,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-04 17:42:23,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:42:23,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 68 transitions, 527 flow. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 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) [2024-06-04 17:42:23,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:42:23,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:42:23,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:42:24,130 INFO L124 PetriNetUnfolderBase]: 230/413 cut-off events. [2024-06-04 17:42:24,130 INFO L125 PetriNetUnfolderBase]: For 4911/4911 co-relation queries the response was YES. [2024-06-04 17:42:24,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2116 conditions, 413 events. 230/413 cut-off events. For 4911/4911 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1475 event pairs, 48 based on Foata normal form. 1/414 useless extension candidates. Maximal degree in co-relation 2076. Up to 301 conditions per place. [2024-06-04 17:42:24,133 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 48 selfloop transitions, 34 changer transitions 0/84 dead transitions. [2024-06-04 17:42:24,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 84 transitions, 809 flow [2024-06-04 17:42:24,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 17:42:24,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 17:42:24,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 85 transitions. [2024-06-04 17:42:24,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3794642857142857 [2024-06-04 17:42:24,134 INFO L175 Difference]: Start difference. First operand has 79 places, 68 transitions, 527 flow. Second operand 7 states and 85 transitions. [2024-06-04 17:42:24,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 84 transitions, 809 flow [2024-06-04 17:42:24,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 84 transitions, 771 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-04 17:42:24,140 INFO L231 Difference]: Finished difference. Result has 80 places, 72 transitions, 591 flow [2024-06-04 17:42:24,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=489, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=591, PETRI_PLACES=80, PETRI_TRANSITIONS=72} [2024-06-04 17:42:24,141 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 49 predicate places. [2024-06-04 17:42:24,141 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 72 transitions, 591 flow [2024-06-04 17:42:24,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 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) [2024-06-04 17:42:24,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:42:24,141 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:42:24,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-04 17:42:24,141 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)] === [2024-06-04 17:42:24,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:42:24,142 INFO L85 PathProgramCache]: Analyzing trace with hash -515709535, now seen corresponding path program 1 times [2024-06-04 17:42:24,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:42:24,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330473094] [2024-06-04 17:42:24,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:42:24,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:42:24,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:42:28,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:42:28,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:42:28,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330473094] [2024-06-04 17:42:28,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330473094] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:42:28,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:42:28,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 17:42:28,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308421314] [2024-06-04 17:42:28,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:42:28,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 17:42:28,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:42:28,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 17:42:28,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 17:42:28,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:42:28,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 72 transitions, 591 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) [2024-06-04 17:42:28,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:42:28,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:42:28,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:42:28,361 INFO L124 PetriNetUnfolderBase]: 244/436 cut-off events. [2024-06-04 17:42:28,362 INFO L125 PetriNetUnfolderBase]: For 5995/5995 co-relation queries the response was YES. [2024-06-04 17:42:28,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2287 conditions, 436 events. 244/436 cut-off events. For 5995/5995 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1587 event pairs, 47 based on Foata normal form. 3/439 useless extension candidates. Maximal degree in co-relation 2246. Up to 271 conditions per place. [2024-06-04 17:42:28,364 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 60 selfloop transitions, 33 changer transitions 0/95 dead transitions. [2024-06-04 17:42:28,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 95 transitions, 929 flow [2024-06-04 17:42:28,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 17:42:28,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 17:42:28,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 101 transitions. [2024-06-04 17:42:28,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39453125 [2024-06-04 17:42:28,367 INFO L175 Difference]: Start difference. First operand has 80 places, 72 transitions, 591 flow. Second operand 8 states and 101 transitions. [2024-06-04 17:42:28,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 95 transitions, 929 flow [2024-06-04 17:42:28,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 95 transitions, 899 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-04 17:42:28,377 INFO L231 Difference]: Finished difference. Result has 85 places, 80 transitions, 685 flow [2024-06-04 17:42:28,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=561, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=685, PETRI_PLACES=85, PETRI_TRANSITIONS=80} [2024-06-04 17:42:28,377 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 54 predicate places. [2024-06-04 17:42:28,378 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 80 transitions, 685 flow [2024-06-04 17:42:28,378 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) [2024-06-04 17:42:28,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:42:28,378 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:42:28,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-04 17:42:28,378 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)] === [2024-06-04 17:42:28,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:42:28,379 INFO L85 PathProgramCache]: Analyzing trace with hash 2013336578, now seen corresponding path program 2 times [2024-06-04 17:42:28,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:42:28,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386445096] [2024-06-04 17:42:28,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:42:28,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:42:28,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:42:32,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:42:32,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:42:32,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386445096] [2024-06-04 17:42:32,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386445096] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:42:32,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:42:32,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 17:42:32,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125253228] [2024-06-04 17:42:32,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:42:32,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 17:42:32,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:42:32,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 17:42:32,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-04 17:42:32,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:42:32,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 80 transitions, 685 flow. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 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) [2024-06-04 17:42:32,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:42:32,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:42:32,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:42:32,546 INFO L124 PetriNetUnfolderBase]: 240/430 cut-off events. [2024-06-04 17:42:32,546 INFO L125 PetriNetUnfolderBase]: For 6306/6306 co-relation queries the response was YES. [2024-06-04 17:42:32,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2362 conditions, 430 events. 240/430 cut-off events. For 6306/6306 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1568 event pairs, 45 based on Foata normal form. 2/432 useless extension candidates. Maximal degree in co-relation 2320. Up to 321 conditions per place. [2024-06-04 17:42:32,550 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 59 selfloop transitions, 34 changer transitions 0/95 dead transitions. [2024-06-04 17:42:32,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 95 transitions, 979 flow [2024-06-04 17:42:32,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 17:42:32,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 17:42:32,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 90 transitions. [2024-06-04 17:42:32,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4017857142857143 [2024-06-04 17:42:32,565 INFO L175 Difference]: Start difference. First operand has 85 places, 80 transitions, 685 flow. Second operand 7 states and 90 transitions. [2024-06-04 17:42:32,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 95 transitions, 979 flow [2024-06-04 17:42:32,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 95 transitions, 947 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-04 17:42:32,589 INFO L231 Difference]: Finished difference. Result has 89 places, 80 transitions, 729 flow [2024-06-04 17:42:32,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=653, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=729, PETRI_PLACES=89, PETRI_TRANSITIONS=80} [2024-06-04 17:42:32,589 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 58 predicate places. [2024-06-04 17:42:32,590 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 80 transitions, 729 flow [2024-06-04 17:42:32,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 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) [2024-06-04 17:42:32,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:42:32,590 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:42:32,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-04 17:42:32,590 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)] === [2024-06-04 17:42:32,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:42:32,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1359337130, now seen corresponding path program 3 times [2024-06-04 17:42:32,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:42:32,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720260522] [2024-06-04 17:42:32,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:42:32,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:42:32,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:42:36,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:42:36,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:42:36,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720260522] [2024-06-04 17:42:36,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720260522] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:42:36,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:42:36,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 17:42:36,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585518354] [2024-06-04 17:42:36,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:42:36,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 17:42:36,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:42:36,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 17:42:36,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-04 17:42:36,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:42:36,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 80 transitions, 729 flow. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 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) [2024-06-04 17:42:36,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:42:36,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:42:36,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:42:36,409 INFO L124 PetriNetUnfolderBase]: 237/425 cut-off events. [2024-06-04 17:42:36,409 INFO L125 PetriNetUnfolderBase]: For 6747/6747 co-relation queries the response was YES. [2024-06-04 17:42:36,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2415 conditions, 425 events. 237/425 cut-off events. For 6747/6747 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1537 event pairs, 44 based on Foata normal form. 1/426 useless extension candidates. Maximal degree in co-relation 2371. Up to 404 conditions per place. [2024-06-04 17:42:36,412 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 74 selfloop transitions, 11 changer transitions 0/87 dead transitions. [2024-06-04 17:42:36,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 87 transitions, 915 flow [2024-06-04 17:42:36,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 17:42:36,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 17:42:36,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 73 transitions. [2024-06-04 17:42:36,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32589285714285715 [2024-06-04 17:42:36,413 INFO L175 Difference]: Start difference. First operand has 89 places, 80 transitions, 729 flow. Second operand 7 states and 73 transitions. [2024-06-04 17:42:36,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 87 transitions, 915 flow [2024-06-04 17:42:36,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 87 transitions, 834 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-04 17:42:36,421 INFO L231 Difference]: Finished difference. Result has 90 places, 80 transitions, 675 flow [2024-06-04 17:42:36,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=648, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=675, PETRI_PLACES=90, PETRI_TRANSITIONS=80} [2024-06-04 17:42:36,421 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 59 predicate places. [2024-06-04 17:42:36,422 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 80 transitions, 675 flow [2024-06-04 17:42:36,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 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) [2024-06-04 17:42:36,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:42:36,422 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:42:36,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-04 17:42:36,423 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)] === [2024-06-04 17:42:36,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:42:36,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1359337347, now seen corresponding path program 2 times [2024-06-04 17:42:36,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:42:36,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858149205] [2024-06-04 17:42:36,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:42:36,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:42:36,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:42:40,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:42:40,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:42:40,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858149205] [2024-06-04 17:42:40,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858149205] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:42:40,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:42:40,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 17:42:40,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358822906] [2024-06-04 17:42:40,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:42:40,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 17:42:40,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:42:40,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 17:42:40,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-04 17:42:40,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:42:40,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 80 transitions, 675 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) [2024-06-04 17:42:40,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:42:40,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:42:40,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:42:40,680 INFO L124 PetriNetUnfolderBase]: 240/430 cut-off events. [2024-06-04 17:42:40,680 INFO L125 PetriNetUnfolderBase]: For 7272/7272 co-relation queries the response was YES. [2024-06-04 17:42:40,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2409 conditions, 430 events. 240/430 cut-off events. For 7272/7272 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1559 event pairs, 43 based on Foata normal form. 1/431 useless extension candidates. Maximal degree in co-relation 2364. Up to 406 conditions per place. [2024-06-04 17:42:40,683 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 74 selfloop transitions, 14 changer transitions 0/90 dead transitions. [2024-06-04 17:42:40,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 90 transitions, 883 flow [2024-06-04 17:42:40,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 17:42:40,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 17:42:40,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 81 transitions. [2024-06-04 17:42:40,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31640625 [2024-06-04 17:42:40,685 INFO L175 Difference]: Start difference. First operand has 90 places, 80 transitions, 675 flow. Second operand 8 states and 81 transitions. [2024-06-04 17:42:40,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 90 transitions, 883 flow [2024-06-04 17:42:40,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 90 transitions, 823 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-04 17:42:40,693 INFO L231 Difference]: Finished difference. Result has 91 places, 82 transitions, 666 flow [2024-06-04 17:42:40,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=615, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=666, PETRI_PLACES=91, PETRI_TRANSITIONS=82} [2024-06-04 17:42:40,693 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 60 predicate places. [2024-06-04 17:42:40,694 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 82 transitions, 666 flow [2024-06-04 17:42:40,694 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) [2024-06-04 17:42:40,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:42:40,694 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:42:40,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-04 17:42:40,694 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)] === [2024-06-04 17:42:40,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:42:40,695 INFO L85 PathProgramCache]: Analyzing trace with hash -2074704571, now seen corresponding path program 3 times [2024-06-04 17:42:40,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:42:40,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157076455] [2024-06-04 17:42:40,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:42:40,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:42:40,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:42:44,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:42:44,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:42:44,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157076455] [2024-06-04 17:42:44,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157076455] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:42:44,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:42:44,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 17:42:44,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949789602] [2024-06-04 17:42:44,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:42:44,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 17:42:44,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:42:44,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 17:42:44,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 17:42:44,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:42:44,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 82 transitions, 666 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) [2024-06-04 17:42:44,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:42:44,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:42:44,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:42:44,875 INFO L124 PetriNetUnfolderBase]: 243/435 cut-off events. [2024-06-04 17:42:44,875 INFO L125 PetriNetUnfolderBase]: For 7941/7941 co-relation queries the response was YES. [2024-06-04 17:42:44,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2467 conditions, 435 events. 243/435 cut-off events. For 7941/7941 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1583 event pairs, 43 based on Foata normal form. 1/436 useless extension candidates. Maximal degree in co-relation 2421. Up to 414 conditions per place. [2024-06-04 17:42:44,879 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 78 selfloop transitions, 12 changer transitions 0/92 dead transitions. [2024-06-04 17:42:44,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 92 transitions, 882 flow [2024-06-04 17:42:44,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 17:42:44,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 17:42:44,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 80 transitions. [2024-06-04 17:42:44,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-06-04 17:42:44,880 INFO L175 Difference]: Start difference. First operand has 91 places, 82 transitions, 666 flow. Second operand 8 states and 80 transitions. [2024-06-04 17:42:44,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 92 transitions, 882 flow [2024-06-04 17:42:44,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 92 transitions, 849 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-04 17:42:44,889 INFO L231 Difference]: Finished difference. Result has 93 places, 84 transitions, 684 flow [2024-06-04 17:42:44,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=633, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=684, PETRI_PLACES=93, PETRI_TRANSITIONS=84} [2024-06-04 17:42:44,890 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 62 predicate places. [2024-06-04 17:42:44,890 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 84 transitions, 684 flow [2024-06-04 17:42:44,890 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) [2024-06-04 17:42:44,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:42:44,890 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:42:44,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-04 17:42:44,890 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)] === [2024-06-04 17:42:44,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:42:44,891 INFO L85 PathProgramCache]: Analyzing trace with hash -316407745, now seen corresponding path program 4 times [2024-06-04 17:42:44,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:42:44,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969168689] [2024-06-04 17:42:44,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:42:44,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:42:44,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:42:48,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:42:48,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:42:48,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969168689] [2024-06-04 17:42:48,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969168689] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:42:48,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:42:48,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 17:42:48,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374438439] [2024-06-04 17:42:48,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:42:48,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 17:42:48,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:42:48,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 17:42:48,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 17:42:48,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:42:48,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 84 transitions, 684 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) [2024-06-04 17:42:48,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:42:48,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:42:48,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:42:48,912 INFO L124 PetriNetUnfolderBase]: 241/432 cut-off events. [2024-06-04 17:42:48,912 INFO L125 PetriNetUnfolderBase]: For 8492/8492 co-relation queries the response was YES. [2024-06-04 17:42:48,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2482 conditions, 432 events. 241/432 cut-off events. For 8492/8492 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1577 event pairs, 43 based on Foata normal form. 1/433 useless extension candidates. Maximal degree in co-relation 2435. Up to 396 conditions per place. [2024-06-04 17:42:48,915 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 73 selfloop transitions, 19 changer transitions 0/94 dead transitions. [2024-06-04 17:42:48,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 94 transitions, 908 flow [2024-06-04 17:42:48,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 17:42:48,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 17:42:48,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 84 transitions. [2024-06-04 17:42:48,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.328125 [2024-06-04 17:42:48,917 INFO L175 Difference]: Start difference. First operand has 93 places, 84 transitions, 684 flow. Second operand 8 states and 84 transitions. [2024-06-04 17:42:48,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 94 transitions, 908 flow [2024-06-04 17:42:48,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 94 transitions, 875 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-04 17:42:48,926 INFO L231 Difference]: Finished difference. Result has 95 places, 86 transitions, 720 flow [2024-06-04 17:42:48,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=651, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=720, PETRI_PLACES=95, PETRI_TRANSITIONS=86} [2024-06-04 17:42:48,927 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 64 predicate places. [2024-06-04 17:42:48,927 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 86 transitions, 720 flow [2024-06-04 17:42:48,927 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) [2024-06-04 17:42:48,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:42:48,928 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:42:48,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-04 17:42:48,928 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)] === [2024-06-04 17:42:48,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:42:48,928 INFO L85 PathProgramCache]: Analyzing trace with hash 238264363, now seen corresponding path program 1 times [2024-06-04 17:42:48,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:42:48,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585943221] [2024-06-04 17:42:48,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:42:48,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:42:48,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:42:53,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:42:53,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:42:53,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585943221] [2024-06-04 17:42:53,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585943221] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:42:53,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:42:53,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 17:42:53,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725621657] [2024-06-04 17:42:53,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:42:53,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 17:42:53,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:42:53,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 17:42:53,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-04 17:42:53,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:42:53,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 86 transitions, 720 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:42:53,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:42:53,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:42:53,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:42:53,478 INFO L124 PetriNetUnfolderBase]: 252/453 cut-off events. [2024-06-04 17:42:53,478 INFO L125 PetriNetUnfolderBase]: For 10168/10168 co-relation queries the response was YES. [2024-06-04 17:42:53,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2657 conditions, 453 events. 252/453 cut-off events. For 10168/10168 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1700 event pairs, 24 based on Foata normal form. 2/455 useless extension candidates. Maximal degree in co-relation 2609. Up to 299 conditions per place. [2024-06-04 17:42:53,481 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 71 selfloop transitions, 33 changer transitions 0/106 dead transitions. [2024-06-04 17:42:53,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 106 transitions, 1078 flow [2024-06-04 17:42:53,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 17:42:53,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 17:42:53,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 95 transitions. [2024-06-04 17:42:53,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37109375 [2024-06-04 17:42:53,483 INFO L175 Difference]: Start difference. First operand has 95 places, 86 transitions, 720 flow. Second operand 8 states and 95 transitions. [2024-06-04 17:42:53,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 106 transitions, 1078 flow [2024-06-04 17:42:53,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 106 transitions, 1027 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-04 17:42:53,512 INFO L231 Difference]: Finished difference. Result has 98 places, 88 transitions, 766 flow [2024-06-04 17:42:53,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=669, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=766, PETRI_PLACES=98, PETRI_TRANSITIONS=88} [2024-06-04 17:42:53,512 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 67 predicate places. [2024-06-04 17:42:53,512 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 88 transitions, 766 flow [2024-06-04 17:42:53,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:42:53,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:42:53,513 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:42:53,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-04 17:42:53,513 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)] === [2024-06-04 17:42:53,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:42:53,515 INFO L85 PathProgramCache]: Analyzing trace with hash -323483627, now seen corresponding path program 2 times [2024-06-04 17:42:53,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:42:53,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811274919] [2024-06-04 17:42:53,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:42:53,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:42:53,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:42:57,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:42:57,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:42:57,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811274919] [2024-06-04 17:42:57,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811274919] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:42:57,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:42:57,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 17:42:57,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101693852] [2024-06-04 17:42:57,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:42:57,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 17:42:57,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:42:57,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 17:42:57,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-04 17:42:57,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:42:57,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 88 transitions, 766 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:42:57,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:42:57,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:42:57,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:42:58,070 INFO L124 PetriNetUnfolderBase]: 256/461 cut-off events. [2024-06-04 17:42:58,070 INFO L125 PetriNetUnfolderBase]: For 11137/11137 co-relation queries the response was YES. [2024-06-04 17:42:58,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2805 conditions, 461 events. 256/461 cut-off events. For 11137/11137 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1755 event pairs, 43 based on Foata normal form. 2/463 useless extension candidates. Maximal degree in co-relation 2755. Up to 356 conditions per place. [2024-06-04 17:42:58,074 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 73 selfloop transitions, 30 changer transitions 0/105 dead transitions. [2024-06-04 17:42:58,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 105 transitions, 1071 flow [2024-06-04 17:42:58,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 17:42:58,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 17:42:58,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-04 17:42:58,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671875 [2024-06-04 17:42:58,077 INFO L175 Difference]: Start difference. First operand has 98 places, 88 transitions, 766 flow. Second operand 8 states and 94 transitions. [2024-06-04 17:42:58,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 105 transitions, 1071 flow [2024-06-04 17:42:58,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 105 transitions, 999 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-04 17:42:58,089 INFO L231 Difference]: Finished difference. Result has 101 places, 89 transitions, 773 flow [2024-06-04 17:42:58,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=699, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=773, PETRI_PLACES=101, PETRI_TRANSITIONS=89} [2024-06-04 17:42:58,089 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 70 predicate places. [2024-06-04 17:42:58,089 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 89 transitions, 773 flow [2024-06-04 17:42:58,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:42:58,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:42:58,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:42:58,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-04 17:42:58,090 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)] === [2024-06-04 17:42:58,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:42:58,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1532025139, now seen corresponding path program 1 times [2024-06-04 17:42:58,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:42:58,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86352263] [2024-06-04 17:42:58,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:42:58,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:42:58,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:43:02,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:43:02,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:43:02,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86352263] [2024-06-04 17:43:02,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86352263] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:43:02,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:43:02,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 17:43:02,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073032285] [2024-06-04 17:43:02,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:43:02,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 17:43:02,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:43:02,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 17:43:02,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 17:43:02,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:43:02,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 89 transitions, 773 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:43:02,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:43:02,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:43:02,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:43:02,874 INFO L124 PetriNetUnfolderBase]: 254/458 cut-off events. [2024-06-04 17:43:02,874 INFO L125 PetriNetUnfolderBase]: For 11386/11386 co-relation queries the response was YES. [2024-06-04 17:43:02,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2756 conditions, 458 events. 254/458 cut-off events. For 11386/11386 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1734 event pairs, 44 based on Foata normal form. 1/459 useless extension candidates. Maximal degree in co-relation 2706. Up to 352 conditions per place. [2024-06-04 17:43:02,877 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 66 selfloop transitions, 32 changer transitions 0/100 dead transitions. [2024-06-04 17:43:02,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 100 transitions, 995 flow [2024-06-04 17:43:02,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 17:43:02,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 17:43:02,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2024-06-04 17:43:02,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36328125 [2024-06-04 17:43:02,881 INFO L175 Difference]: Start difference. First operand has 101 places, 89 transitions, 773 flow. Second operand 8 states and 93 transitions. [2024-06-04 17:43:02,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 100 transitions, 995 flow [2024-06-04 17:43:02,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 100 transitions, 921 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-04 17:43:02,894 INFO L231 Difference]: Finished difference. Result has 102 places, 89 transitions, 768 flow [2024-06-04 17:43:02,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=699, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=768, PETRI_PLACES=102, PETRI_TRANSITIONS=89} [2024-06-04 17:43:02,894 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 71 predicate places. [2024-06-04 17:43:02,894 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 89 transitions, 768 flow [2024-06-04 17:43:02,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:43:02,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:43:02,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:43:02,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-04 17:43:02,895 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)] === [2024-06-04 17:43:02,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:43:02,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1532029913, now seen corresponding path program 3 times [2024-06-04 17:43:02,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:43:02,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145317987] [2024-06-04 17:43:02,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:43:02,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:43:02,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:43:07,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:43:07,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:43:07,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145317987] [2024-06-04 17:43:07,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145317987] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:43:07,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:43:07,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 17:43:07,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901632322] [2024-06-04 17:43:07,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:43:07,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 17:43:07,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:43:07,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 17:43:07,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-04 17:43:07,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:43:07,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 89 transitions, 768 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:43:07,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:43:07,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:43:07,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:43:07,450 INFO L124 PetriNetUnfolderBase]: 251/453 cut-off events. [2024-06-04 17:43:07,451 INFO L125 PetriNetUnfolderBase]: For 11875/11875 co-relation queries the response was YES. [2024-06-04 17:43:07,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2680 conditions, 453 events. 251/453 cut-off events. For 11875/11875 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1706 event pairs, 42 based on Foata normal form. 2/455 useless extension candidates. Maximal degree in co-relation 2630. Up to 400 conditions per place. [2024-06-04 17:43:07,454 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 83 selfloop transitions, 16 changer transitions 0/101 dead transitions. [2024-06-04 17:43:07,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 101 transitions, 994 flow [2024-06-04 17:43:07,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 17:43:07,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 17:43:07,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-04 17:43:07,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33984375 [2024-06-04 17:43:07,477 INFO L175 Difference]: Start difference. First operand has 102 places, 89 transitions, 768 flow. Second operand 8 states and 87 transitions. [2024-06-04 17:43:07,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 101 transitions, 994 flow [2024-06-04 17:43:07,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 101 transitions, 891 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-04 17:43:07,489 INFO L231 Difference]: Finished difference. Result has 101 places, 89 transitions, 701 flow [2024-06-04 17:43:07,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=665, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=701, PETRI_PLACES=101, PETRI_TRANSITIONS=89} [2024-06-04 17:43:07,489 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 70 predicate places. [2024-06-04 17:43:07,489 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 89 transitions, 701 flow [2024-06-04 17:43:07,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:43:07,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:43:07,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:43:07,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-04 17:43:07,490 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)] === [2024-06-04 17:43:07,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:43:07,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1416733783, now seen corresponding path program 1 times [2024-06-04 17:43:07,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:43:07,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011385709] [2024-06-04 17:43:07,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:43:07,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:43:07,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:43:11,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:43:11,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:43:11,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011385709] [2024-06-04 17:43:11,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011385709] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:43:11,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:43:11,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 17:43:11,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104243350] [2024-06-04 17:43:11,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:43:11,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 17:43:11,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:43:11,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 17:43:11,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 17:43:11,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:43:11,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 89 transitions, 701 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:43:11,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:43:11,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:43:11,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:43:11,504 INFO L124 PetriNetUnfolderBase]: 257/463 cut-off events. [2024-06-04 17:43:11,505 INFO L125 PetriNetUnfolderBase]: For 12724/12724 co-relation queries the response was YES. [2024-06-04 17:43:11,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2679 conditions, 463 events. 257/463 cut-off events. For 12724/12724 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1757 event pairs, 45 based on Foata normal form. 2/465 useless extension candidates. Maximal degree in co-relation 2629. Up to 301 conditions per place. [2024-06-04 17:43:11,507 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 64 selfloop transitions, 43 changer transitions 0/109 dead transitions. [2024-06-04 17:43:11,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 109 transitions, 1093 flow [2024-06-04 17:43:11,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 17:43:11,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 17:43:11,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 102 transitions. [2024-06-04 17:43:11,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3984375 [2024-06-04 17:43:11,510 INFO L175 Difference]: Start difference. First operand has 101 places, 89 transitions, 701 flow. Second operand 8 states and 102 transitions. [2024-06-04 17:43:11,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 109 transitions, 1093 flow [2024-06-04 17:43:11,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 109 transitions, 1057 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-04 17:43:11,523 INFO L231 Difference]: Finished difference. Result has 103 places, 92 transitions, 786 flow [2024-06-04 17:43:11,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=665, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=786, PETRI_PLACES=103, PETRI_TRANSITIONS=92} [2024-06-04 17:43:11,523 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 72 predicate places. [2024-06-04 17:43:11,524 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 92 transitions, 786 flow [2024-06-04 17:43:11,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:43:11,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:43:11,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:43:11,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-04 17:43:11,524 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)] === [2024-06-04 17:43:11,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:43:11,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1416554045, now seen corresponding path program 1 times [2024-06-04 17:43:11,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:43:11,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25644559] [2024-06-04 17:43:11,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:43:11,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:43:11,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:43:16,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:43:16,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:43:16,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25644559] [2024-06-04 17:43:16,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25644559] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:43:16,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:43:16,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 17:43:16,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507620682] [2024-06-04 17:43:16,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:43:16,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 17:43:16,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:43:16,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 17:43:16,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-04 17:43:16,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:43:16,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 92 transitions, 786 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) [2024-06-04 17:43:16,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:43:16,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:43:16,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:43:16,385 INFO L124 PetriNetUnfolderBase]: 285/509 cut-off events. [2024-06-04 17:43:16,385 INFO L125 PetriNetUnfolderBase]: For 15729/15729 co-relation queries the response was YES. [2024-06-04 17:43:16,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3013 conditions, 509 events. 285/509 cut-off events. For 15729/15729 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1977 event pairs, 43 based on Foata normal form. 6/515 useless extension candidates. Maximal degree in co-relation 2962. Up to 252 conditions per place. [2024-06-04 17:43:16,388 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 77 selfloop transitions, 41 changer transitions 0/120 dead transitions. [2024-06-04 17:43:16,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 120 transitions, 1254 flow [2024-06-04 17:43:16,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 17:43:16,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 17:43:16,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-04 17:43:16,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4097222222222222 [2024-06-04 17:43:16,390 INFO L175 Difference]: Start difference. First operand has 103 places, 92 transitions, 786 flow. Second operand 9 states and 118 transitions. [2024-06-04 17:43:16,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 120 transitions, 1254 flow [2024-06-04 17:43:16,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 120 transitions, 1157 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-04 17:43:16,406 INFO L231 Difference]: Finished difference. Result has 106 places, 100 transitions, 844 flow [2024-06-04 17:43:16,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=689, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=844, PETRI_PLACES=106, PETRI_TRANSITIONS=100} [2024-06-04 17:43:16,407 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 75 predicate places. [2024-06-04 17:43:16,407 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 100 transitions, 844 flow [2024-06-04 17:43:16,407 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) [2024-06-04 17:43:16,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:43:16,407 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:43:16,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-04 17:43:16,407 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)] === [2024-06-04 17:43:16,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:43:16,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1416554293, now seen corresponding path program 2 times [2024-06-04 17:43:16,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:43:16,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602356866] [2024-06-04 17:43:16,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:43:16,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:43:16,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:43:20,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:43:20,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:43:20,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602356866] [2024-06-04 17:43:20,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602356866] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:43:20,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:43:20,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 17:43:20,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384589957] [2024-06-04 17:43:20,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:43:20,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 17:43:20,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:43:20,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 17:43:20,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 17:43:20,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:43:20,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 100 transitions, 844 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:43:20,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:43:20,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:43:20,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:43:20,456 INFO L124 PetriNetUnfolderBase]: 293/522 cut-off events. [2024-06-04 17:43:20,456 INFO L125 PetriNetUnfolderBase]: For 15460/15460 co-relation queries the response was YES. [2024-06-04 17:43:20,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3212 conditions, 522 events. 293/522 cut-off events. For 15460/15460 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2046 event pairs, 44 based on Foata normal form. 1/523 useless extension candidates. Maximal degree in co-relation 3160. Up to 352 conditions per place. [2024-06-04 17:43:20,460 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 68 selfloop transitions, 48 changer transitions 0/118 dead transitions. [2024-06-04 17:43:20,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 118 transitions, 1276 flow [2024-06-04 17:43:20,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 17:43:20,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 17:43:20,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-04 17:43:20,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37890625 [2024-06-04 17:43:20,462 INFO L175 Difference]: Start difference. First operand has 106 places, 100 transitions, 844 flow. Second operand 8 states and 97 transitions. [2024-06-04 17:43:20,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 118 transitions, 1276 flow [2024-06-04 17:43:20,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 118 transitions, 1227 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-04 17:43:20,479 INFO L231 Difference]: Finished difference. Result has 111 places, 104 transitions, 962 flow [2024-06-04 17:43:20,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=795, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=962, PETRI_PLACES=111, PETRI_TRANSITIONS=104} [2024-06-04 17:43:20,479 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 80 predicate places. [2024-06-04 17:43:20,480 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 104 transitions, 962 flow [2024-06-04 17:43:20,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:43:20,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:43:20,480 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:43:20,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-04 17:43:20,480 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)] === [2024-06-04 17:43:20,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:43:20,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1416560803, now seen corresponding path program 3 times [2024-06-04 17:43:20,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:43:20,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245871312] [2024-06-04 17:43:20,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:43:20,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:43:20,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:43:24,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:43:24,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:43:24,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245871312] [2024-06-04 17:43:24,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245871312] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:43:24,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:43:24,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 17:43:24,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514524486] [2024-06-04 17:43:24,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:43:24,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 17:43:24,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:43:24,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 17:43:24,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 17:43:24,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:43:24,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 104 transitions, 962 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:43:24,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:43:24,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:43:24,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:43:24,392 INFO L124 PetriNetUnfolderBase]: 291/519 cut-off events. [2024-06-04 17:43:24,393 INFO L125 PetriNetUnfolderBase]: For 16338/16338 co-relation queries the response was YES. [2024-06-04 17:43:24,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3315 conditions, 519 events. 291/519 cut-off events. For 16338/16338 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2031 event pairs, 44 based on Foata normal form. 1/520 useless extension candidates. Maximal degree in co-relation 3260. Up to 351 conditions per place. [2024-06-04 17:43:24,395 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 70 selfloop transitions, 45 changer transitions 0/117 dead transitions. [2024-06-04 17:43:24,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 117 transitions, 1294 flow [2024-06-04 17:43:24,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 17:43:24,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 17:43:24,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-04 17:43:24,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-04 17:43:24,397 INFO L175 Difference]: Start difference. First operand has 111 places, 104 transitions, 962 flow. Second operand 8 states and 96 transitions. [2024-06-04 17:43:24,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 117 transitions, 1294 flow [2024-06-04 17:43:24,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 117 transitions, 1221 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-04 17:43:24,414 INFO L231 Difference]: Finished difference. Result has 115 places, 104 transitions, 984 flow [2024-06-04 17:43:24,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=889, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=984, PETRI_PLACES=115, PETRI_TRANSITIONS=104} [2024-06-04 17:43:24,415 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 84 predicate places. [2024-06-04 17:43:24,415 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 104 transitions, 984 flow [2024-06-04 17:43:24,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:43:24,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:43:24,415 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:43:24,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-04 17:43:24,416 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)] === [2024-06-04 17:43:24,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:43:24,416 INFO L85 PathProgramCache]: Analyzing trace with hash 423965033, now seen corresponding path program 4 times [2024-06-04 17:43:24,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:43:24,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945466859] [2024-06-04 17:43:24,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:43:24,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:43:24,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:43:27,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:43:27,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:43:27,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945466859] [2024-06-04 17:43:27,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945466859] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:43:27,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:43:27,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 17:43:27,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614381846] [2024-06-04 17:43:27,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:43:27,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 17:43:27,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:43:27,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 17:43:27,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 17:43:28,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:43:28,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 104 transitions, 984 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:43:28,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:43:28,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:43:28,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:43:28,258 INFO L124 PetriNetUnfolderBase]: 294/524 cut-off events. [2024-06-04 17:43:28,258 INFO L125 PetriNetUnfolderBase]: For 17508/17508 co-relation queries the response was YES. [2024-06-04 17:43:28,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3396 conditions, 524 events. 294/524 cut-off events. For 17508/17508 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2055 event pairs, 44 based on Foata normal form. 1/525 useless extension candidates. Maximal degree in co-relation 3340. Up to 500 conditions per place. [2024-06-04 17:43:28,261 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 99 selfloop transitions, 13 changer transitions 0/114 dead transitions. [2024-06-04 17:43:28,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 114 transitions, 1255 flow [2024-06-04 17:43:28,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 17:43:28,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 17:43:28,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 81 transitions. [2024-06-04 17:43:28,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31640625 [2024-06-04 17:43:28,263 INFO L175 Difference]: Start difference. First operand has 115 places, 104 transitions, 984 flow. Second operand 8 states and 81 transitions. [2024-06-04 17:43:28,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 114 transitions, 1255 flow [2024-06-04 17:43:28,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 114 transitions, 1143 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-04 17:43:28,284 INFO L231 Difference]: Finished difference. Result has 116 places, 106 transitions, 936 flow [2024-06-04 17:43:28,284 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=874, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=936, PETRI_PLACES=116, PETRI_TRANSITIONS=106} [2024-06-04 17:43:28,284 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 85 predicate places. [2024-06-04 17:43:28,284 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 106 transitions, 936 flow [2024-06-04 17:43:28,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:43:28,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:43:28,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:43:28,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-04 17:43:28,285 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)] === [2024-06-04 17:43:28,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:43:28,285 INFO L85 PathProgramCache]: Analyzing trace with hash -801642749, now seen corresponding path program 2 times [2024-06-04 17:43:28,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:43:28,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928531516] [2024-06-04 17:43:28,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:43:28,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:43:28,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:43:32,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:43:32,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:43:32,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928531516] [2024-06-04 17:43:32,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928531516] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:43:32,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:43:32,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 17:43:32,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914774527] [2024-06-04 17:43:32,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:43:32,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 17:43:32,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:43:32,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 17:43:32,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 17:43:32,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:43:32,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 106 transitions, 936 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) [2024-06-04 17:43:32,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:43:32,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:43:32,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:43:32,575 INFO L124 PetriNetUnfolderBase]: 300/534 cut-off events. [2024-06-04 17:43:32,575 INFO L125 PetriNetUnfolderBase]: For 19059/19059 co-relation queries the response was YES. [2024-06-04 17:43:32,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3403 conditions, 534 events. 300/534 cut-off events. For 19059/19059 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2097 event pairs, 41 based on Foata normal form. 2/536 useless extension candidates. Maximal degree in co-relation 3346. Up to 502 conditions per place. [2024-06-04 17:43:32,578 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 103 selfloop transitions, 14 changer transitions 0/119 dead transitions. [2024-06-04 17:43:32,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 119 transitions, 1216 flow [2024-06-04 17:43:32,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 17:43:32,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 17:43:32,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 90 transitions. [2024-06-04 17:43:32,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-06-04 17:43:32,579 INFO L175 Difference]: Start difference. First operand has 116 places, 106 transitions, 936 flow. Second operand 9 states and 90 transitions. [2024-06-04 17:43:32,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 119 transitions, 1216 flow [2024-06-04 17:43:32,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 119 transitions, 1173 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-04 17:43:32,599 INFO L231 Difference]: Finished difference. Result has 119 places, 108 transitions, 952 flow [2024-06-04 17:43:32,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=893, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=952, PETRI_PLACES=119, PETRI_TRANSITIONS=108} [2024-06-04 17:43:32,600 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 88 predicate places. [2024-06-04 17:43:32,600 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 108 transitions, 952 flow [2024-06-04 17:43:32,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:43:32,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:43:32,600 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:43:32,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-04 17:43:32,601 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)] === [2024-06-04 17:43:32,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:43:32,601 INFO L85 PathProgramCache]: Analyzing trace with hash -982528569, now seen corresponding path program 3 times [2024-06-04 17:43:32,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:43:32,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064706836] [2024-06-04 17:43:32,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:43:32,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:43:32,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:43:36,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:43:36,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:43:36,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064706836] [2024-06-04 17:43:36,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064706836] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:43:36,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:43:36,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 17:43:36,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719012594] [2024-06-04 17:43:36,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:43:36,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 17:43:36,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:43:36,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 17:43:36,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 17:43:36,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:43:36,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 108 transitions, 952 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) [2024-06-04 17:43:36,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:43:36,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:43:36,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:43:37,114 INFO L124 PetriNetUnfolderBase]: 306/544 cut-off events. [2024-06-04 17:43:37,115 INFO L125 PetriNetUnfolderBase]: For 20396/20396 co-relation queries the response was YES. [2024-06-04 17:43:37,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3510 conditions, 544 events. 306/544 cut-off events. For 20396/20396 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2155 event pairs, 41 based on Foata normal form. 2/546 useless extension candidates. Maximal degree in co-relation 3452. Up to 503 conditions per place. [2024-06-04 17:43:37,119 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 103 selfloop transitions, 17 changer transitions 0/122 dead transitions. [2024-06-04 17:43:37,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 122 transitions, 1244 flow [2024-06-04 17:43:37,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 17:43:37,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 17:43:37,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 93 transitions. [2024-06-04 17:43:37,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3229166666666667 [2024-06-04 17:43:37,120 INFO L175 Difference]: Start difference. First operand has 119 places, 108 transitions, 952 flow. Second operand 9 states and 93 transitions. [2024-06-04 17:43:37,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 122 transitions, 1244 flow [2024-06-04 17:43:37,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 122 transitions, 1203 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-04 17:43:37,141 INFO L231 Difference]: Finished difference. Result has 121 places, 110 transitions, 980 flow [2024-06-04 17:43:37,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=911, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=980, PETRI_PLACES=121, PETRI_TRANSITIONS=110} [2024-06-04 17:43:37,142 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 90 predicate places. [2024-06-04 17:43:37,142 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 110 transitions, 980 flow [2024-06-04 17:43:37,142 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) [2024-06-04 17:43:37,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:43:37,143 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:43:37,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-04 17:43:37,143 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)] === [2024-06-04 17:43:37,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:43:37,143 INFO L85 PathProgramCache]: Analyzing trace with hash 528492435, now seen corresponding path program 4 times [2024-06-04 17:43:37,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:43:37,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587027336] [2024-06-04 17:43:37,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:43:37,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:43:37,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:43:41,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:43:41,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:43:41,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587027336] [2024-06-04 17:43:41,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587027336] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:43:41,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:43:41,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 17:43:41,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892195334] [2024-06-04 17:43:41,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:43:41,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 17:43:41,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:43:41,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 17:43:41,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 17:43:41,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:43:41,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 110 transitions, 980 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) [2024-06-04 17:43:41,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:43:41,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:43:41,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:43:41,781 INFO L124 PetriNetUnfolderBase]: 312/554 cut-off events. [2024-06-04 17:43:41,781 INFO L125 PetriNetUnfolderBase]: For 21772/21772 co-relation queries the response was YES. [2024-06-04 17:43:41,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3617 conditions, 554 events. 312/554 cut-off events. For 21772/21772 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2199 event pairs, 41 based on Foata normal form. 2/556 useless extension candidates. Maximal degree in co-relation 3558. Up to 518 conditions per place. [2024-06-04 17:43:41,784 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 104 selfloop transitions, 17 changer transitions 0/123 dead transitions. [2024-06-04 17:43:41,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 123 transitions, 1276 flow [2024-06-04 17:43:41,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 17:43:41,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 17:43:41,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 92 transitions. [2024-06-04 17:43:41,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3194444444444444 [2024-06-04 17:43:41,786 INFO L175 Difference]: Start difference. First operand has 121 places, 110 transitions, 980 flow. Second operand 9 states and 92 transitions. [2024-06-04 17:43:41,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 123 transitions, 1276 flow [2024-06-04 17:43:41,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 123 transitions, 1225 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-04 17:43:41,807 INFO L231 Difference]: Finished difference. Result has 123 places, 112 transitions, 1002 flow [2024-06-04 17:43:41,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=929, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1002, PETRI_PLACES=123, PETRI_TRANSITIONS=112} [2024-06-04 17:43:41,807 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 92 predicate places. [2024-06-04 17:43:41,807 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 112 transitions, 1002 flow [2024-06-04 17:43:41,808 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) [2024-06-04 17:43:41,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:43:41,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:43:41,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-04 17:43:41,808 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)] === [2024-06-04 17:43:41,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:43:41,808 INFO L85 PathProgramCache]: Analyzing trace with hash -990803027, now seen corresponding path program 5 times [2024-06-04 17:43:41,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:43:41,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219670173] [2024-06-04 17:43:41,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:43:41,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:43:41,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:43:45,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:43:45,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:43:45,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219670173] [2024-06-04 17:43:45,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219670173] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:43:45,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:43:45,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 17:43:45,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711559790] [2024-06-04 17:43:45,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:43:45,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 17:43:45,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:43:45,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 17:43:45,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 17:43:45,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:43:45,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 112 transitions, 1002 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:43:45,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:43:45,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:43:45,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:43:45,713 INFO L124 PetriNetUnfolderBase]: 315/559 cut-off events. [2024-06-04 17:43:45,713 INFO L125 PetriNetUnfolderBase]: For 22424/22424 co-relation queries the response was YES. [2024-06-04 17:43:45,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3678 conditions, 559 events. 315/559 cut-off events. For 22424/22424 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2241 event pairs, 45 based on Foata normal form. 1/560 useless extension candidates. Maximal degree in co-relation 3618. Up to 525 conditions per place. [2024-06-04 17:43:45,717 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 105 selfloop transitions, 18 changer transitions 0/125 dead transitions. [2024-06-04 17:43:45,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 125 transitions, 1400 flow [2024-06-04 17:43:45,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 17:43:45,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 17:43:45,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 85 transitions. [2024-06-04 17:43:45,721 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33203125 [2024-06-04 17:43:45,721 INFO L175 Difference]: Start difference. First operand has 123 places, 112 transitions, 1002 flow. Second operand 8 states and 85 transitions. [2024-06-04 17:43:45,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 125 transitions, 1400 flow [2024-06-04 17:43:45,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 125 transitions, 1345 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-04 17:43:45,745 INFO L231 Difference]: Finished difference. Result has 124 places, 116 transitions, 1054 flow [2024-06-04 17:43:45,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=947, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1054, PETRI_PLACES=124, PETRI_TRANSITIONS=116} [2024-06-04 17:43:45,746 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 93 predicate places. [2024-06-04 17:43:45,746 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 116 transitions, 1054 flow [2024-06-04 17:43:45,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:43:45,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:43:45,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:43:45,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-04 17:43:45,746 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)] === [2024-06-04 17:43:45,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:43:45,747 INFO L85 PathProgramCache]: Analyzing trace with hash -810220387, now seen corresponding path program 6 times [2024-06-04 17:43:45,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:43:45,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805982883] [2024-06-04 17:43:45,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:43:45,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:43:45,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:43:49,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:43:49,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:43:49,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805982883] [2024-06-04 17:43:49,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805982883] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:43:49,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:43:49,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 17:43:49,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239974865] [2024-06-04 17:43:49,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:43:49,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 17:43:49,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:43:49,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 17:43:49,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 17:43:49,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:43:49,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 116 transitions, 1054 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:43:49,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:43:49,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:43:49,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:43:49,699 INFO L124 PetriNetUnfolderBase]: 313/556 cut-off events. [2024-06-04 17:43:49,699 INFO L125 PetriNetUnfolderBase]: For 22871/22871 co-relation queries the response was YES. [2024-06-04 17:43:49,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3634 conditions, 556 events. 313/556 cut-off events. For 22871/22871 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2229 event pairs, 45 based on Foata normal form. 1/557 useless extension candidates. Maximal degree in co-relation 3573. Up to 523 conditions per place. [2024-06-04 17:43:49,703 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 104 selfloop transitions, 18 changer transitions 0/124 dead transitions. [2024-06-04 17:43:49,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 124 transitions, 1316 flow [2024-06-04 17:43:49,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 17:43:49,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 17:43:49,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 84 transitions. [2024-06-04 17:43:49,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.328125 [2024-06-04 17:43:49,704 INFO L175 Difference]: Start difference. First operand has 124 places, 116 transitions, 1054 flow. Second operand 8 states and 84 transitions. [2024-06-04 17:43:49,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 124 transitions, 1316 flow [2024-06-04 17:43:49,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 124 transitions, 1254 flow, removed 23 selfloop flow, removed 4 redundant places. [2024-06-04 17:43:49,728 INFO L231 Difference]: Finished difference. Result has 128 places, 116 transitions, 1033 flow [2024-06-04 17:43:49,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=992, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1033, PETRI_PLACES=128, PETRI_TRANSITIONS=116} [2024-06-04 17:43:49,729 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 97 predicate places. [2024-06-04 17:43:49,729 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 116 transitions, 1033 flow [2024-06-04 17:43:49,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:43:49,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:43:49,729 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:43:49,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-04 17:43:49,730 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)] === [2024-06-04 17:43:49,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:43:49,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1038114779, now seen corresponding path program 5 times [2024-06-04 17:43:49,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:43:49,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783117100] [2024-06-04 17:43:49,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:43:49,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:43:49,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:43:54,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:43:54,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:43:54,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783117100] [2024-06-04 17:43:54,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783117100] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:43:54,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:43:54,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 17:43:54,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929367238] [2024-06-04 17:43:54,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:43:54,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 17:43:54,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:43:54,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 17:43:54,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-04 17:43:54,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:43:54,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 116 transitions, 1033 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) [2024-06-04 17:43:54,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:43:54,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:43:54,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:43:54,912 INFO L124 PetriNetUnfolderBase]: 309/550 cut-off events. [2024-06-04 17:43:54,912 INFO L125 PetriNetUnfolderBase]: For 23249/23249 co-relation queries the response was YES. [2024-06-04 17:43:54,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3544 conditions, 550 events. 309/550 cut-off events. For 23249/23249 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2188 event pairs, 40 based on Foata normal form. 2/552 useless extension candidates. Maximal degree in co-relation 3481. Up to 482 conditions per place. [2024-06-04 17:43:54,916 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 102 selfloop transitions, 26 changer transitions 0/130 dead transitions. [2024-06-04 17:43:54,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 130 transitions, 1349 flow [2024-06-04 17:43:54,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 17:43:54,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 17:43:54,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-04 17:43:54,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3368055555555556 [2024-06-04 17:43:54,917 INFO L175 Difference]: Start difference. First operand has 128 places, 116 transitions, 1033 flow. Second operand 9 states and 97 transitions. [2024-06-04 17:43:54,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 130 transitions, 1349 flow [2024-06-04 17:43:54,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 130 transitions, 1308 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-04 17:43:54,947 INFO L231 Difference]: Finished difference. Result has 130 places, 118 transitions, 1087 flow [2024-06-04 17:43:54,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=992, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1087, PETRI_PLACES=130, PETRI_TRANSITIONS=118} [2024-06-04 17:43:54,947 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 99 predicate places. [2024-06-04 17:43:54,947 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 118 transitions, 1087 flow [2024-06-04 17:43:54,948 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) [2024-06-04 17:43:54,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:43:54,948 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:43:54,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-04 17:43:54,948 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)] === [2024-06-04 17:43:54,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:43:54,948 INFO L85 PathProgramCache]: Analyzing trace with hash -982220987, now seen corresponding path program 1 times [2024-06-04 17:43:54,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:43:54,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397893952] [2024-06-04 17:43:54,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:43:54,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:43:54,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:44:00,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:44:00,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:44:00,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397893952] [2024-06-04 17:44:00,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397893952] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:44:00,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:44:00,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 17:44:00,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545714103] [2024-06-04 17:44:00,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:44:00,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 17:44:00,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:44:00,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 17:44:00,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 17:44:00,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:44:00,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 118 transitions, 1087 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:44:00,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:44:00,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:44:00,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:44:00,694 INFO L124 PetriNetUnfolderBase]: 306/545 cut-off events. [2024-06-04 17:44:00,694 INFO L125 PetriNetUnfolderBase]: For 23226/23226 co-relation queries the response was YES. [2024-06-04 17:44:00,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3521 conditions, 545 events. 306/545 cut-off events. For 23226/23226 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2160 event pairs, 39 based on Foata normal form. 2/547 useless extension candidates. Maximal degree in co-relation 3457. Up to 515 conditions per place. [2024-06-04 17:44:00,699 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 114 selfloop transitions, 13 changer transitions 0/129 dead transitions. [2024-06-04 17:44:00,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 129 transitions, 1365 flow [2024-06-04 17:44:00,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 17:44:00,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 17:44:00,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 88 transitions. [2024-06-04 17:44:00,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3055555555555556 [2024-06-04 17:44:00,700 INFO L175 Difference]: Start difference. First operand has 130 places, 118 transitions, 1087 flow. Second operand 9 states and 88 transitions. [2024-06-04 17:44:00,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 129 transitions, 1365 flow [2024-06-04 17:44:00,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 129 transitions, 1288 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-04 17:44:00,732 INFO L231 Difference]: Finished difference. Result has 132 places, 118 transitions, 1040 flow [2024-06-04 17:44:00,732 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1010, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1040, PETRI_PLACES=132, PETRI_TRANSITIONS=118} [2024-06-04 17:44:00,732 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 101 predicate places. [2024-06-04 17:44:00,732 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 118 transitions, 1040 flow [2024-06-04 17:44:00,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:44:00,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:44:00,733 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:44:00,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-04 17:44:00,733 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)] === [2024-06-04 17:44:00,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:44:00,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1823488987, now seen corresponding path program 1 times [2024-06-04 17:44:00,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:44:00,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332731219] [2024-06-04 17:44:00,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:44:00,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:44:00,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:44:04,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:44:04,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:44:04,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332731219] [2024-06-04 17:44:04,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332731219] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:44:04,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:44:04,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 17:44:04,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424107118] [2024-06-04 17:44:04,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:44:04,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 17:44:04,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:44:04,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 17:44:04,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-04 17:44:04,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:44:04,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 118 transitions, 1040 flow. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 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) [2024-06-04 17:44:04,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:44:04,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:44:04,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:44:05,212 INFO L124 PetriNetUnfolderBase]: 310/553 cut-off events. [2024-06-04 17:44:05,213 INFO L125 PetriNetUnfolderBase]: For 23986/23986 co-relation queries the response was YES. [2024-06-04 17:44:05,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3504 conditions, 553 events. 310/553 cut-off events. For 23986/23986 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2219 event pairs, 24 based on Foata normal form. 2/555 useless extension candidates. Maximal degree in co-relation 3439. Up to 361 conditions per place. [2024-06-04 17:44:05,216 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 104 selfloop transitions, 28 changer transitions 0/134 dead transitions. [2024-06-04 17:44:05,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 134 transitions, 1424 flow [2024-06-04 17:44:05,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 17:44:05,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 17:44:05,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-04 17:44:05,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34765625 [2024-06-04 17:44:05,217 INFO L175 Difference]: Start difference. First operand has 132 places, 118 transitions, 1040 flow. Second operand 8 states and 89 transitions. [2024-06-04 17:44:05,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 134 transitions, 1424 flow [2024-06-04 17:44:05,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 134 transitions, 1387 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-04 17:44:05,254 INFO L231 Difference]: Finished difference. Result has 132 places, 119 transitions, 1071 flow [2024-06-04 17:44:05,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1003, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1071, PETRI_PLACES=132, PETRI_TRANSITIONS=119} [2024-06-04 17:44:05,264 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 101 predicate places. [2024-06-04 17:44:05,264 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 119 transitions, 1071 flow [2024-06-04 17:44:05,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 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) [2024-06-04 17:44:05,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:44:05,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:44:05,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-04 17:44:05,265 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)] === [2024-06-04 17:44:05,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:44:05,265 INFO L85 PathProgramCache]: Analyzing trace with hash -334977345, now seen corresponding path program 2 times [2024-06-04 17:44:05,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:44:05,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146626657] [2024-06-04 17:44:05,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:44:05,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:44:05,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:44:09,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:44:09,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:44:09,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146626657] [2024-06-04 17:44:09,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146626657] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:44:09,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:44:09,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 17:44:09,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430192769] [2024-06-04 17:44:09,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:44:09,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 17:44:09,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:44:09,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 17:44:09,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-04 17:44:09,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:44:09,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 119 transitions, 1071 flow. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 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) [2024-06-04 17:44:09,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:44:09,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:44:09,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:44:09,730 INFO L124 PetriNetUnfolderBase]: 328/587 cut-off events. [2024-06-04 17:44:09,730 INFO L125 PetriNetUnfolderBase]: For 28461/28461 co-relation queries the response was YES. [2024-06-04 17:44:09,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3838 conditions, 587 events. 328/587 cut-off events. For 28461/28461 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2427 event pairs, 45 based on Foata normal form. 2/589 useless extension candidates. Maximal degree in co-relation 3773. Up to 439 conditions per place. [2024-06-04 17:44:09,733 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 101 selfloop transitions, 33 changer transitions 0/136 dead transitions. [2024-06-04 17:44:09,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 136 transitions, 1477 flow [2024-06-04 17:44:09,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 17:44:09,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 17:44:09,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-04 17:44:09,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671875 [2024-06-04 17:44:09,734 INFO L175 Difference]: Start difference. First operand has 132 places, 119 transitions, 1071 flow. Second operand 8 states and 94 transitions. [2024-06-04 17:44:09,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 136 transitions, 1477 flow [2024-06-04 17:44:09,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 136 transitions, 1412 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-04 17:44:09,771 INFO L231 Difference]: Finished difference. Result has 136 places, 122 transitions, 1115 flow [2024-06-04 17:44:09,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1017, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1115, PETRI_PLACES=136, PETRI_TRANSITIONS=122} [2024-06-04 17:44:09,772 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 105 predicate places. [2024-06-04 17:44:09,772 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 122 transitions, 1115 flow [2024-06-04 17:44:09,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 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) [2024-06-04 17:44:09,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:44:09,772 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:44:09,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-04 17:44:09,772 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)] === [2024-06-04 17:44:09,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:44:09,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1201860157, now seen corresponding path program 3 times [2024-06-04 17:44:09,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:44:09,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223084611] [2024-06-04 17:44:09,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:44:09,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:44:09,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:44:14,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:44:14,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:44:14,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223084611] [2024-06-04 17:44:14,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223084611] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:44:14,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:44:14,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 17:44:14,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917476405] [2024-06-04 17:44:14,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:44:14,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 17:44:14,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:44:14,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 17:44:14,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-04 17:44:14,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:44:14,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 122 transitions, 1115 flow. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 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) [2024-06-04 17:44:14,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:44:14,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:44:14,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:44:14,379 INFO L124 PetriNetUnfolderBase]: 325/582 cut-off events. [2024-06-04 17:44:14,379 INFO L125 PetriNetUnfolderBase]: For 28233/28233 co-relation queries the response was YES. [2024-06-04 17:44:14,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3783 conditions, 582 events. 325/582 cut-off events. For 28233/28233 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2395 event pairs, 46 based on Foata normal form. 2/584 useless extension candidates. Maximal degree in co-relation 3716. Up to 470 conditions per place. [2024-06-04 17:44:14,382 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 99 selfloop transitions, 33 changer transitions 0/134 dead transitions. [2024-06-04 17:44:14,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 134 transitions, 1407 flow [2024-06-04 17:44:14,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 17:44:14,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 17:44:14,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-04 17:44:14,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671875 [2024-06-04 17:44:14,385 INFO L175 Difference]: Start difference. First operand has 136 places, 122 transitions, 1115 flow. Second operand 8 states and 94 transitions. [2024-06-04 17:44:14,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 134 transitions, 1407 flow [2024-06-04 17:44:14,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 134 transitions, 1362 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-04 17:44:14,429 INFO L231 Difference]: Finished difference. Result has 140 places, 122 transitions, 1140 flow [2024-06-04 17:44:14,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1070, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1140, PETRI_PLACES=140, PETRI_TRANSITIONS=122} [2024-06-04 17:44:14,432 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 109 predicate places. [2024-06-04 17:44:14,432 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 122 transitions, 1140 flow [2024-06-04 17:44:14,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 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) [2024-06-04 17:44:14,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:44:14,432 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:44:14,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-04 17:44:14,437 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)] === [2024-06-04 17:44:14,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:44:14,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1819673972, now seen corresponding path program 1 times [2024-06-04 17:44:14,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:44:14,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46767303] [2024-06-04 17:44:14,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:44:14,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:44:14,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:44:18,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:44:18,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:44:18,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46767303] [2024-06-04 17:44:18,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46767303] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:44:18,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:44:18,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 17:44:18,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722238725] [2024-06-04 17:44:18,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:44:18,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 17:44:18,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:44:18,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 17:44:18,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-04 17:44:18,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:44:18,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 122 transitions, 1140 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:44:18,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:44:18,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:44:18,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:44:18,960 INFO L124 PetriNetUnfolderBase]: 328/587 cut-off events. [2024-06-04 17:44:18,960 INFO L125 PetriNetUnfolderBase]: For 28636/28636 co-relation queries the response was YES. [2024-06-04 17:44:18,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3876 conditions, 587 events. 328/587 cut-off events. For 28636/28636 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2433 event pairs, 47 based on Foata normal form. 1/588 useless extension candidates. Maximal degree in co-relation 3807. Up to 476 conditions per place. [2024-06-04 17:44:18,964 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 97 selfloop transitions, 39 changer transitions 0/138 dead transitions. [2024-06-04 17:44:18,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 138 transitions, 1472 flow [2024-06-04 17:44:18,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 17:44:18,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 17:44:18,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-04 17:44:18,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3506944444444444 [2024-06-04 17:44:18,966 INFO L175 Difference]: Start difference. First operand has 140 places, 122 transitions, 1140 flow. Second operand 9 states and 101 transitions. [2024-06-04 17:44:18,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 138 transitions, 1472 flow [2024-06-04 17:44:19,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 138 transitions, 1406 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-04 17:44:19,010 INFO L231 Difference]: Finished difference. Result has 145 places, 126 transitions, 1229 flow [2024-06-04 17:44:19,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1074, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1229, PETRI_PLACES=145, PETRI_TRANSITIONS=126} [2024-06-04 17:44:19,011 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 114 predicate places. [2024-06-04 17:44:19,011 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 126 transitions, 1229 flow [2024-06-04 17:44:19,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:44:19,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:44:19,011 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:44:19,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-04 17:44:19,011 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)] === [2024-06-04 17:44:19,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:44:19,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1115024197, now seen corresponding path program 4 times [2024-06-04 17:44:19,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:44:19,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755271513] [2024-06-04 17:44:19,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:44:19,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:44:19,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:44:23,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:44:23,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:44:23,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755271513] [2024-06-04 17:44:23,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755271513] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:44:23,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:44:23,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 17:44:23,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550506514] [2024-06-04 17:44:23,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:44:23,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 17:44:23,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:44:23,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 17:44:23,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 17:44:23,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:44:23,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 126 transitions, 1229 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:44:23,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:44:23,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:44:23,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:44:24,208 INFO L124 PetriNetUnfolderBase]: 325/582 cut-off events. [2024-06-04 17:44:24,208 INFO L125 PetriNetUnfolderBase]: For 29063/29063 co-relation queries the response was YES. [2024-06-04 17:44:24,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3886 conditions, 582 events. 325/582 cut-off events. For 29063/29063 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2399 event pairs, 45 based on Foata normal form. 2/584 useless extension candidates. Maximal degree in co-relation 3814. Up to 464 conditions per place. [2024-06-04 17:44:24,212 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 103 selfloop transitions, 34 changer transitions 0/139 dead transitions. [2024-06-04 17:44:24,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 139 transitions, 1533 flow [2024-06-04 17:44:24,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 17:44:24,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 17:44:24,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-04 17:44:24,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3506944444444444 [2024-06-04 17:44:24,213 INFO L175 Difference]: Start difference. First operand has 145 places, 126 transitions, 1229 flow. Second operand 9 states and 101 transitions. [2024-06-04 17:44:24,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 139 transitions, 1533 flow [2024-06-04 17:44:24,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 139 transitions, 1473 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-04 17:44:24,262 INFO L231 Difference]: Finished difference. Result has 149 places, 126 transitions, 1243 flow [2024-06-04 17:44:24,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1169, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1243, PETRI_PLACES=149, PETRI_TRANSITIONS=126} [2024-06-04 17:44:24,262 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 118 predicate places. [2024-06-04 17:44:24,262 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 126 transitions, 1243 flow [2024-06-04 17:44:24,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:44:24,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:44:24,263 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:44:24,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-04 17:44:24,263 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)] === [2024-06-04 17:44:24,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:44:24,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1115024042, now seen corresponding path program 2 times [2024-06-04 17:44:24,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:44:24,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16212141] [2024-06-04 17:44:24,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:44:24,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:44:24,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:44:28,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:44:28,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:44:28,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16212141] [2024-06-04 17:44:28,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16212141] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:44:28,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:44:28,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 17:44:28,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648703729] [2024-06-04 17:44:28,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:44:28,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 17:44:28,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:44:28,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 17:44:28,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 17:44:28,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:44:28,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 126 transitions, 1243 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:44:28,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:44:28,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:44:28,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:44:29,116 INFO L124 PetriNetUnfolderBase]: 323/579 cut-off events. [2024-06-04 17:44:29,116 INFO L125 PetriNetUnfolderBase]: For 28480/28480 co-relation queries the response was YES. [2024-06-04 17:44:29,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3867 conditions, 579 events. 323/579 cut-off events. For 28480/28480 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2384 event pairs, 46 based on Foata normal form. 1/580 useless extension candidates. Maximal degree in co-relation 3794. Up to 459 conditions per place. [2024-06-04 17:44:29,120 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 92 selfloop transitions, 44 changer transitions 0/138 dead transitions. [2024-06-04 17:44:29,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 138 transitions, 1543 flow [2024-06-04 17:44:29,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 17:44:29,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 17:44:29,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-04 17:44:29,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3576388888888889 [2024-06-04 17:44:29,122 INFO L175 Difference]: Start difference. First operand has 149 places, 126 transitions, 1243 flow. Second operand 9 states and 103 transitions. [2024-06-04 17:44:29,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 138 transitions, 1543 flow [2024-06-04 17:44:29,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 138 transitions, 1463 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-04 17:44:29,170 INFO L231 Difference]: Finished difference. Result has 149 places, 126 transitions, 1256 flow [2024-06-04 17:44:29,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1163, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1256, PETRI_PLACES=149, PETRI_TRANSITIONS=126} [2024-06-04 17:44:29,171 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 118 predicate places. [2024-06-04 17:44:29,171 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 126 transitions, 1256 flow [2024-06-04 17:44:29,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:44:29,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:44:29,171 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:44:29,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-04 17:44:29,172 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)] === [2024-06-04 17:44:29,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:44:29,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1681299427, now seen corresponding path program 5 times [2024-06-04 17:44:29,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:44:29,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629120564] [2024-06-04 17:44:29,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:44:29,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:44:29,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:44:33,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:44:33,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:44:33,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629120564] [2024-06-04 17:44:33,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629120564] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:44:33,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:44:33,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 17:44:33,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297240976] [2024-06-04 17:44:33,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:44:33,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 17:44:33,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:44:33,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 17:44:33,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-04 17:44:33,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:44:33,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 126 transitions, 1256 flow. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 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) [2024-06-04 17:44:33,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:44:33,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:44:33,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:44:33,766 INFO L124 PetriNetUnfolderBase]: 327/587 cut-off events. [2024-06-04 17:44:33,766 INFO L125 PetriNetUnfolderBase]: For 29414/29414 co-relation queries the response was YES. [2024-06-04 17:44:33,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3899 conditions, 587 events. 327/587 cut-off events. For 29414/29414 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2432 event pairs, 24 based on Foata normal form. 2/589 useless extension candidates. Maximal degree in co-relation 3826. Up to 431 conditions per place. [2024-06-04 17:44:33,770 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 106 selfloop transitions, 36 changer transitions 0/144 dead transitions. [2024-06-04 17:44:33,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 144 transitions, 1675 flow [2024-06-04 17:44:33,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 17:44:33,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 17:44:33,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-04 17:44:33,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37890625 [2024-06-04 17:44:33,771 INFO L175 Difference]: Start difference. First operand has 149 places, 126 transitions, 1256 flow. Second operand 8 states and 97 transitions. [2024-06-04 17:44:33,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 144 transitions, 1675 flow [2024-06-04 17:44:33,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 144 transitions, 1568 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-04 17:44:33,822 INFO L231 Difference]: Finished difference. Result has 149 places, 127 transitions, 1232 flow [2024-06-04 17:44:33,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1149, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1232, PETRI_PLACES=149, PETRI_TRANSITIONS=127} [2024-06-04 17:44:33,823 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 118 predicate places. [2024-06-04 17:44:33,823 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 127 transitions, 1232 flow [2024-06-04 17:44:33,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 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) [2024-06-04 17:44:33,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:44:33,823 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:44:33,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-04 17:44:33,824 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)] === [2024-06-04 17:44:33,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:44:33,824 INFO L85 PathProgramCache]: Analyzing trace with hash -969222841, now seen corresponding path program 6 times [2024-06-04 17:44:33,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:44:33,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775666798] [2024-06-04 17:44:33,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:44:33,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:44:33,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:44:38,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:44:38,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:44:38,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775666798] [2024-06-04 17:44:38,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775666798] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:44:38,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:44:38,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 17:44:38,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627542710] [2024-06-04 17:44:38,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:44:38,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 17:44:38,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:44:38,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 17:44:38,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-04 17:44:38,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:44:38,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 127 transitions, 1232 flow. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 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) [2024-06-04 17:44:38,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:44:38,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:44:38,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:44:38,436 INFO L124 PetriNetUnfolderBase]: 324/582 cut-off events. [2024-06-04 17:44:38,437 INFO L125 PetriNetUnfolderBase]: For 28743/28743 co-relation queries the response was YES. [2024-06-04 17:44:38,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3810 conditions, 582 events. 324/582 cut-off events. For 28743/28743 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2414 event pairs, 44 based on Foata normal form. 2/584 useless extension candidates. Maximal degree in co-relation 3736. Up to 470 conditions per place. [2024-06-04 17:44:38,441 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 105 selfloop transitions, 35 changer transitions 0/142 dead transitions. [2024-06-04 17:44:38,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 142 transitions, 1548 flow [2024-06-04 17:44:38,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 17:44:38,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 17:44:38,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-04 17:44:38,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-04 17:44:38,443 INFO L175 Difference]: Start difference. First operand has 149 places, 127 transitions, 1232 flow. Second operand 8 states and 96 transitions. [2024-06-04 17:44:38,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 142 transitions, 1548 flow [2024-06-04 17:44:38,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 142 transitions, 1437 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-04 17:44:38,491 INFO L231 Difference]: Finished difference. Result has 149 places, 127 transitions, 1195 flow [2024-06-04 17:44:38,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1121, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1195, PETRI_PLACES=149, PETRI_TRANSITIONS=127} [2024-06-04 17:44:38,492 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 118 predicate places. [2024-06-04 17:44:38,492 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 127 transitions, 1195 flow [2024-06-04 17:44:38,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 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) [2024-06-04 17:44:38,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:44:38,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:44:38,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-04 17:44:38,494 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)] === [2024-06-04 17:44:38,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:44:38,494 INFO L85 PathProgramCache]: Analyzing trace with hash -969072956, now seen corresponding path program 3 times [2024-06-04 17:44:38,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:44:38,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883929423] [2024-06-04 17:44:38,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:44:38,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:44:38,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:44:42,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:44:42,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:44:42,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883929423] [2024-06-04 17:44:42,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883929423] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:44:42,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:44:42,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 17:44:42,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315743547] [2024-06-04 17:44:42,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:44:42,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 17:44:42,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:44:42,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 17:44:42,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-04 17:44:42,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:44:42,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 127 transitions, 1195 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:44:42,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:44:42,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:44:42,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:44:43,099 INFO L124 PetriNetUnfolderBase]: 327/587 cut-off events. [2024-06-04 17:44:43,100 INFO L125 PetriNetUnfolderBase]: For 28852/28852 co-relation queries the response was YES. [2024-06-04 17:44:43,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3773 conditions, 587 events. 327/587 cut-off events. For 28852/28852 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2439 event pairs, 45 based on Foata normal form. 1/588 useless extension candidates. Maximal degree in co-relation 3700. Up to 476 conditions per place. [2024-06-04 17:44:43,104 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 97 selfloop transitions, 45 changer transitions 0/144 dead transitions. [2024-06-04 17:44:43,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 144 transitions, 1543 flow [2024-06-04 17:44:43,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 17:44:43,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 17:44:43,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-04 17:44:43,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3611111111111111 [2024-06-04 17:44:43,106 INFO L175 Difference]: Start difference. First operand has 149 places, 127 transitions, 1195 flow. Second operand 9 states and 104 transitions. [2024-06-04 17:44:43,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 144 transitions, 1543 flow [2024-06-04 17:44:43,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 144 transitions, 1462 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-04 17:44:43,158 INFO L231 Difference]: Finished difference. Result has 151 places, 129 transitions, 1241 flow [2024-06-04 17:44:43,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1114, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1241, PETRI_PLACES=151, PETRI_TRANSITIONS=129} [2024-06-04 17:44:43,159 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 120 predicate places. [2024-06-04 17:44:43,159 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 129 transitions, 1241 flow [2024-06-04 17:44:43,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:44:43,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:44:43,159 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:44:43,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-04 17:44:43,160 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)] === [2024-06-04 17:44:43,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:44:43,160 INFO L85 PathProgramCache]: Analyzing trace with hash -969078691, now seen corresponding path program 7 times [2024-06-04 17:44:43,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:44:43,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095812247] [2024-06-04 17:44:43,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:44:43,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:44:43,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:44:47,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:44:47,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:44:47,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095812247] [2024-06-04 17:44:47,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095812247] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:44:47,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:44:47,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 17:44:47,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557521671] [2024-06-04 17:44:47,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:44:47,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 17:44:47,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:44:47,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 17:44:47,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 17:44:48,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:44:48,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 129 transitions, 1241 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:44:48,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:44:48,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:44:48,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:44:48,392 INFO L124 PetriNetUnfolderBase]: 334/600 cut-off events. [2024-06-04 17:44:48,393 INFO L125 PetriNetUnfolderBase]: For 31139/31139 co-relation queries the response was YES. [2024-06-04 17:44:48,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3846 conditions, 600 events. 334/600 cut-off events. For 31139/31139 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2521 event pairs, 44 based on Foata normal form. 2/602 useless extension candidates. Maximal degree in co-relation 3773. Up to 481 conditions per place. [2024-06-04 17:44:48,397 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 108 selfloop transitions, 38 changer transitions 0/148 dead transitions. [2024-06-04 17:44:48,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 148 transitions, 1596 flow [2024-06-04 17:44:48,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 17:44:48,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 17:44:48,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-04 17:44:48,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3611111111111111 [2024-06-04 17:44:48,398 INFO L175 Difference]: Start difference. First operand has 151 places, 129 transitions, 1241 flow. Second operand 9 states and 104 transitions. [2024-06-04 17:44:48,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 148 transitions, 1596 flow [2024-06-04 17:44:48,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 148 transitions, 1457 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-04 17:44:48,451 INFO L231 Difference]: Finished difference. Result has 153 places, 132 transitions, 1211 flow [2024-06-04 17:44:48,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1102, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1211, PETRI_PLACES=153, PETRI_TRANSITIONS=132} [2024-06-04 17:44:48,452 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 122 predicate places. [2024-06-04 17:44:48,452 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 132 transitions, 1211 flow [2024-06-04 17:44:48,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:44:48,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:44:48,452 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:44:48,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-04 17:44:48,453 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)] === [2024-06-04 17:44:48,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:44:48,453 INFO L85 PathProgramCache]: Analyzing trace with hash -969072739, now seen corresponding path program 1 times [2024-06-04 17:44:48,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:44:48,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090691241] [2024-06-04 17:44:48,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:44:48,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:44:48,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:44:52,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:44:52,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:44:52,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090691241] [2024-06-04 17:44:52,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090691241] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:44:52,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:44:52,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 17:44:52,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997694676] [2024-06-04 17:44:52,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:44:52,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 17:44:52,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:44:52,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 17:44:52,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-04 17:44:52,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:44:52,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 132 transitions, 1211 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:44:52,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:44:52,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:44:52,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:44:53,378 INFO L124 PetriNetUnfolderBase]: 346/620 cut-off events. [2024-06-04 17:44:53,379 INFO L125 PetriNetUnfolderBase]: For 34877/34877 co-relation queries the response was YES. [2024-06-04 17:44:53,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3942 conditions, 620 events. 346/620 cut-off events. For 34877/34877 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2628 event pairs, 45 based on Foata normal form. 4/624 useless extension candidates. Maximal degree in co-relation 3868. Up to 308 conditions per place. [2024-06-04 17:44:53,383 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 95 selfloop transitions, 60 changer transitions 0/157 dead transitions. [2024-06-04 17:44:53,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 157 transitions, 1819 flow [2024-06-04 17:44:53,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 17:44:53,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 17:44:53,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-04 17:44:53,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4097222222222222 [2024-06-04 17:44:53,385 INFO L175 Difference]: Start difference. First operand has 153 places, 132 transitions, 1211 flow. Second operand 9 states and 118 transitions. [2024-06-04 17:44:53,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 157 transitions, 1819 flow [2024-06-04 17:44:53,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 157 transitions, 1755 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-04 17:44:53,443 INFO L231 Difference]: Finished difference. Result has 156 places, 135 transitions, 1320 flow [2024-06-04 17:44:53,443 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1151, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1320, PETRI_PLACES=156, PETRI_TRANSITIONS=135} [2024-06-04 17:44:53,443 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 125 predicate places. [2024-06-04 17:44:53,444 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 135 transitions, 1320 flow [2024-06-04 17:44:53,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:44:53,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:44:53,444 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:44:53,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-04 17:44:53,444 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)] === [2024-06-04 17:44:53,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:44:53,445 INFO L85 PathProgramCache]: Analyzing trace with hash -969078536, now seen corresponding path program 4 times [2024-06-04 17:44:53,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:44:53,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207500693] [2024-06-04 17:44:53,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:44:53,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:44:53,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:44:57,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:44:57,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:44:57,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207500693] [2024-06-04 17:44:57,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207500693] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:44:57,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:44:57,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 17:44:57,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508764122] [2024-06-04 17:44:57,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:44:57,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 17:44:57,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:44:57,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 17:44:57,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-04 17:44:57,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:44:57,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 135 transitions, 1320 flow. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 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) [2024-06-04 17:44:57,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:44:57,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:44:57,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:44:57,850 INFO L124 PetriNetUnfolderBase]: 349/625 cut-off events. [2024-06-04 17:44:57,850 INFO L125 PetriNetUnfolderBase]: For 31604/31604 co-relation queries the response was YES. [2024-06-04 17:44:57,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4095 conditions, 625 events. 349/625 cut-off events. For 31604/31604 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2655 event pairs, 45 based on Foata normal form. 1/626 useless extension candidates. Maximal degree in co-relation 4021. Up to 477 conditions per place. [2024-06-04 17:44:57,855 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 99 selfloop transitions, 54 changer transitions 0/155 dead transitions. [2024-06-04 17:44:57,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 155 transitions, 1800 flow [2024-06-04 17:44:57,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 17:44:57,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 17:44:57,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-06-04 17:44:57,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40234375 [2024-06-04 17:44:57,857 INFO L175 Difference]: Start difference. First operand has 156 places, 135 transitions, 1320 flow. Second operand 8 states and 103 transitions. [2024-06-04 17:44:57,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 155 transitions, 1800 flow [2024-06-04 17:44:57,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 155 transitions, 1655 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-04 17:44:57,916 INFO L231 Difference]: Finished difference. Result has 157 places, 137 transitions, 1323 flow [2024-06-04 17:44:57,916 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1177, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1323, PETRI_PLACES=157, PETRI_TRANSITIONS=137} [2024-06-04 17:44:57,916 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 126 predicate places. [2024-06-04 17:44:57,917 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 137 transitions, 1323 flow [2024-06-04 17:44:57,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 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) [2024-06-04 17:44:57,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:44:57,917 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:44:57,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-04 17:44:57,917 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)] === [2024-06-04 17:44:57,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:44:57,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1675783225, now seen corresponding path program 2 times [2024-06-04 17:44:57,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:44:57,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209794047] [2024-06-04 17:44:57,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:44:57,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:44:57,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:45:02,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:45:02,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:45:02,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209794047] [2024-06-04 17:45:02,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209794047] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:45:02,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:45:02,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 17:45:02,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065570013] [2024-06-04 17:45:02,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:45:02,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 17:45:02,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:45:02,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 17:45:02,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-04 17:45:03,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:45:03,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 137 transitions, 1323 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:45:03,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:45:03,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:45:03,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:45:03,276 INFO L124 PetriNetUnfolderBase]: 365/651 cut-off events. [2024-06-04 17:45:03,277 INFO L125 PetriNetUnfolderBase]: For 36220/36220 co-relation queries the response was YES. [2024-06-04 17:45:03,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4322 conditions, 651 events. 365/651 cut-off events. For 36220/36220 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2802 event pairs, 41 based on Foata normal form. 2/653 useless extension candidates. Maximal degree in co-relation 4247. Up to 315 conditions per place. [2024-06-04 17:45:03,281 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 97 selfloop transitions, 62 changer transitions 0/161 dead transitions. [2024-06-04 17:45:03,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 161 transitions, 1967 flow [2024-06-04 17:45:03,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 17:45:03,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 17:45:03,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-04 17:45:03,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-04 17:45:03,283 INFO L175 Difference]: Start difference. First operand has 157 places, 137 transitions, 1323 flow. Second operand 9 states and 114 transitions. [2024-06-04 17:45:03,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 161 transitions, 1967 flow [2024-06-04 17:45:03,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 161 transitions, 1794 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-04 17:45:03,344 INFO L231 Difference]: Finished difference. Result has 160 places, 141 transitions, 1362 flow [2024-06-04 17:45:03,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1150, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1362, PETRI_PLACES=160, PETRI_TRANSITIONS=141} [2024-06-04 17:45:03,345 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 129 predicate places. [2024-06-04 17:45:03,345 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 141 transitions, 1362 flow [2024-06-04 17:45:03,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:45:03,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:45:03,345 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:45:03,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-04 17:45:03,346 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)] === [2024-06-04 17:45:03,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:45:03,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1830602843, now seen corresponding path program 8 times [2024-06-04 17:45:03,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:45:03,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398551449] [2024-06-04 17:45:03,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:45:03,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:45:03,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:45:08,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:45:08,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:45:08,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398551449] [2024-06-04 17:45:08,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398551449] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:45:08,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:45:08,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 17:45:08,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057394552] [2024-06-04 17:45:08,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:45:08,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 17:45:08,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:45:08,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 17:45:08,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 17:45:08,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:45:08,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 141 transitions, 1362 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:45:08,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:45:08,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:45:08,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:45:08,836 INFO L124 PetriNetUnfolderBase]: 372/664 cut-off events. [2024-06-04 17:45:08,836 INFO L125 PetriNetUnfolderBase]: For 38178/38178 co-relation queries the response was YES. [2024-06-04 17:45:08,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4453 conditions, 664 events. 372/664 cut-off events. For 38178/38178 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2892 event pairs, 47 based on Foata normal form. 2/666 useless extension candidates. Maximal degree in co-relation 4376. Up to 550 conditions per place. [2024-06-04 17:45:08,841 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 116 selfloop transitions, 39 changer transitions 0/157 dead transitions. [2024-06-04 17:45:08,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 157 transitions, 1735 flow [2024-06-04 17:45:08,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 17:45:08,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 17:45:08,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-04 17:45:08,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-04 17:45:08,842 INFO L175 Difference]: Start difference. First operand has 160 places, 141 transitions, 1362 flow. Second operand 9 states and 99 transitions. [2024-06-04 17:45:08,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 157 transitions, 1735 flow [2024-06-04 17:45:08,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 157 transitions, 1632 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-04 17:45:08,916 INFO L231 Difference]: Finished difference. Result has 164 places, 144 transitions, 1376 flow [2024-06-04 17:45:08,916 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1260, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1376, PETRI_PLACES=164, PETRI_TRANSITIONS=144} [2024-06-04 17:45:08,917 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 133 predicate places. [2024-06-04 17:45:08,917 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 144 transitions, 1376 flow [2024-06-04 17:45:08,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:45:08,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:45:08,917 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:45:08,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-04 17:45:08,917 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)] === [2024-06-04 17:45:08,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:45:08,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1830597108, now seen corresponding path program 5 times [2024-06-04 17:45:08,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:45:08,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862167292] [2024-06-04 17:45:08,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:45:08,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:45:08,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:45:13,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:45:13,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:45:13,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862167292] [2024-06-04 17:45:13,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862167292] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:45:13,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:45:13,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 17:45:13,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158104361] [2024-06-04 17:45:13,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:45:13,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 17:45:13,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:45:13,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 17:45:13,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-04 17:45:13,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:45:13,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 144 transitions, 1376 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:45:13,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:45:13,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:45:13,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:45:13,846 INFO L124 PetriNetUnfolderBase]: 375/669 cut-off events. [2024-06-04 17:45:13,847 INFO L125 PetriNetUnfolderBase]: For 38232/38232 co-relation queries the response was YES. [2024-06-04 17:45:13,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4447 conditions, 669 events. 375/669 cut-off events. For 38232/38232 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 2920 event pairs, 46 based on Foata normal form. 1/670 useless extension candidates. Maximal degree in co-relation 4369. Up to 558 conditions per place. [2024-06-04 17:45:13,851 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 116 selfloop transitions, 40 changer transitions 0/158 dead transitions. [2024-06-04 17:45:13,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 158 transitions, 1745 flow [2024-06-04 17:45:13,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 17:45:13,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 17:45:13,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-04 17:45:13,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3506944444444444 [2024-06-04 17:45:13,853 INFO L175 Difference]: Start difference. First operand has 164 places, 144 transitions, 1376 flow. Second operand 9 states and 101 transitions. [2024-06-04 17:45:13,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 158 transitions, 1745 flow [2024-06-04 17:45:13,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 158 transitions, 1690 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-04 17:45:13,917 INFO L231 Difference]: Finished difference. Result has 168 places, 146 transitions, 1439 flow [2024-06-04 17:45:13,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1321, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1439, PETRI_PLACES=168, PETRI_TRANSITIONS=146} [2024-06-04 17:45:13,918 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 137 predicate places. [2024-06-04 17:45:13,918 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 146 transitions, 1439 flow [2024-06-04 17:45:13,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:45:13,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:45:13,918 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:45:13,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-04 17:45:13,918 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)] === [2024-06-04 17:45:13,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:45:13,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1830395298, now seen corresponding path program 6 times [2024-06-04 17:45:13,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:45:13,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952326557] [2024-06-04 17:45:13,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:45:13,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:45:13,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:45:18,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:45:18,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:45:18,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952326557] [2024-06-04 17:45:18,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952326557] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:45:18,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:45:18,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 17:45:18,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907399137] [2024-06-04 17:45:18,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:45:18,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 17:45:18,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:45:18,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 17:45:18,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-04 17:45:18,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:45:18,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 146 transitions, 1439 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:45:18,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:45:18,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:45:18,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:45:18,576 INFO L124 PetriNetUnfolderBase]: 378/674 cut-off events. [2024-06-04 17:45:18,576 INFO L125 PetriNetUnfolderBase]: For 39743/39743 co-relation queries the response was YES. [2024-06-04 17:45:18,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4534 conditions, 674 events. 378/674 cut-off events. For 39743/39743 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 2942 event pairs, 48 based on Foata normal form. 1/675 useless extension candidates. Maximal degree in co-relation 4455. Up to 563 conditions per place. [2024-06-04 17:45:18,581 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 117 selfloop transitions, 41 changer transitions 0/160 dead transitions. [2024-06-04 17:45:18,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 160 transitions, 1816 flow [2024-06-04 17:45:18,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 17:45:18,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 17:45:18,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-04 17:45:18,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3472222222222222 [2024-06-04 17:45:18,582 INFO L175 Difference]: Start difference. First operand has 168 places, 146 transitions, 1439 flow. Second operand 9 states and 100 transitions. [2024-06-04 17:45:18,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 160 transitions, 1816 flow [2024-06-04 17:45:18,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 160 transitions, 1721 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-04 17:45:18,660 INFO L231 Difference]: Finished difference. Result has 170 places, 148 transitions, 1468 flow [2024-06-04 17:45:18,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1344, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1468, PETRI_PLACES=170, PETRI_TRANSITIONS=148} [2024-06-04 17:45:18,661 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 139 predicate places. [2024-06-04 17:45:18,661 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 148 transitions, 1468 flow [2024-06-04 17:45:18,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:45:18,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:45:18,662 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:45:18,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-04 17:45:18,662 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)] === [2024-06-04 17:45:18,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:45:18,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1830395081, now seen corresponding path program 3 times [2024-06-04 17:45:18,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:45:18,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13625831] [2024-06-04 17:45:18,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:45:18,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:45:18,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:45:23,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:45:23,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:45:23,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13625831] [2024-06-04 17:45:23,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13625831] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:45:23,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:45:23,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 17:45:23,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897019944] [2024-06-04 17:45:23,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:45:23,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 17:45:23,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:45:23,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 17:45:23,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 17:45:23,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:45:23,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 148 transitions, 1468 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:45:23,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:45:23,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:45:23,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:45:23,774 INFO L124 PetriNetUnfolderBase]: 384/684 cut-off events. [2024-06-04 17:45:23,775 INFO L125 PetriNetUnfolderBase]: For 42476/42476 co-relation queries the response was YES. [2024-06-04 17:45:23,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4630 conditions, 684 events. 384/684 cut-off events. For 42476/42476 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3000 event pairs, 42 based on Foata normal form. 2/686 useless extension candidates. Maximal degree in co-relation 4550. Up to 331 conditions per place. [2024-06-04 17:45:23,780 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 98 selfloop transitions, 70 changer transitions 0/170 dead transitions. [2024-06-04 17:45:23,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 170 transitions, 2117 flow [2024-06-04 17:45:23,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 17:45:23,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 17:45:23,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-04 17:45:23,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-04 17:45:23,781 INFO L175 Difference]: Start difference. First operand has 170 places, 148 transitions, 1468 flow. Second operand 9 states and 114 transitions. [2024-06-04 17:45:23,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 170 transitions, 2117 flow [2024-06-04 17:45:23,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 170 transitions, 2016 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-04 17:45:23,864 INFO L231 Difference]: Finished difference. Result has 172 places, 150 transitions, 1547 flow [2024-06-04 17:45:23,865 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1367, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1547, PETRI_PLACES=172, PETRI_TRANSITIONS=150} [2024-06-04 17:45:23,865 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 141 predicate places. [2024-06-04 17:45:23,865 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 150 transitions, 1547 flow [2024-06-04 17:45:23,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:45:23,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:45:23,865 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:45:23,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-04 17:45:23,866 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)] === [2024-06-04 17:45:23,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:45:23,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1830387641, now seen corresponding path program 4 times [2024-06-04 17:45:23,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:45:23,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931027045] [2024-06-04 17:45:23,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:45:23,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:45:23,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:45:28,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:45:28,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:45:28,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931027045] [2024-06-04 17:45:28,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931027045] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:45:28,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:45:28,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 17:45:28,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804764896] [2024-06-04 17:45:28,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:45:28,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 17:45:28,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:45:28,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 17:45:28,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 17:45:28,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:45:28,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 150 transitions, 1547 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:45:28,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:45:28,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:45:28,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:45:28,568 INFO L124 PetriNetUnfolderBase]: 380/678 cut-off events. [2024-06-04 17:45:28,568 INFO L125 PetriNetUnfolderBase]: For 40840/40840 co-relation queries the response was YES. [2024-06-04 17:45:28,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4595 conditions, 678 events. 380/678 cut-off events. For 40840/40840 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 2949 event pairs, 40 based on Foata normal form. 2/680 useless extension candidates. Maximal degree in co-relation 4514. Up to 330 conditions per place. [2024-06-04 17:45:28,573 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 92 selfloop transitions, 74 changer transitions 0/168 dead transitions. [2024-06-04 17:45:28,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 168 transitions, 2049 flow [2024-06-04 17:45:28,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 17:45:28,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 17:45:28,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-04 17:45:28,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-04 17:45:28,574 INFO L175 Difference]: Start difference. First operand has 172 places, 150 transitions, 1547 flow. Second operand 9 states and 112 transitions. [2024-06-04 17:45:28,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 168 transitions, 2049 flow [2024-06-04 17:45:28,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 168 transitions, 1861 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-04 17:45:28,651 INFO L231 Difference]: Finished difference. Result has 174 places, 150 transitions, 1513 flow [2024-06-04 17:45:28,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1359, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1513, PETRI_PLACES=174, PETRI_TRANSITIONS=150} [2024-06-04 17:45:28,652 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 143 predicate places. [2024-06-04 17:45:28,652 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 150 transitions, 1513 flow [2024-06-04 17:45:28,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:45:28,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:45:28,652 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:45:28,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-04 17:45:28,653 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)] === [2024-06-04 17:45:28,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:45:28,653 INFO L85 PathProgramCache]: Analyzing trace with hash 909942583, now seen corresponding path program 5 times [2024-06-04 17:45:28,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:45:28,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869742307] [2024-06-04 17:45:28,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:45:28,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:45:28,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:45:32,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:45:32,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:45:32,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869742307] [2024-06-04 17:45:32,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869742307] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:45:32,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:45:32,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 17:45:32,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042234259] [2024-06-04 17:45:32,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:45:32,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 17:45:32,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:45:32,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 17:45:32,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 17:45:32,910 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:45:32,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 150 transitions, 1513 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:45:32,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:45:32,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:45:32,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:45:33,241 INFO L124 PetriNetUnfolderBase]: 386/688 cut-off events. [2024-06-04 17:45:33,242 INFO L125 PetriNetUnfolderBase]: For 43026/43026 co-relation queries the response was YES. [2024-06-04 17:45:33,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4641 conditions, 688 events. 386/688 cut-off events. For 43026/43026 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3013 event pairs, 43 based on Foata normal form. 2/690 useless extension candidates. Maximal degree in co-relation 4559. Up to 648 conditions per place. [2024-06-04 17:45:33,247 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 147 selfloop transitions, 15 changer transitions 0/164 dead transitions. [2024-06-04 17:45:33,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 164 transitions, 1904 flow [2024-06-04 17:45:33,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 17:45:33,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 17:45:33,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 92 transitions. [2024-06-04 17:45:33,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3194444444444444 [2024-06-04 17:45:33,249 INFO L175 Difference]: Start difference. First operand has 174 places, 150 transitions, 1513 flow. Second operand 9 states and 92 transitions. [2024-06-04 17:45:33,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 164 transitions, 1904 flow [2024-06-04 17:45:33,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 164 transitions, 1748 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-04 17:45:33,324 INFO L231 Difference]: Finished difference. Result has 175 places, 152 transitions, 1437 flow [2024-06-04 17:45:33,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1359, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1437, PETRI_PLACES=175, PETRI_TRANSITIONS=152} [2024-06-04 17:45:33,324 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 144 predicate places. [2024-06-04 17:45:33,324 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 152 transitions, 1437 flow [2024-06-04 17:45:33,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:45:33,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:45:33,325 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:45:33,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-04 17:45:33,325 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)] === [2024-06-04 17:45:33,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:45:33,325 INFO L85 PathProgramCache]: Analyzing trace with hash 909675673, now seen corresponding path program 6 times [2024-06-04 17:45:33,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:45:33,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123277946] [2024-06-04 17:45:33,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:45:33,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:45:33,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:45:37,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:45:37,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:45:37,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123277946] [2024-06-04 17:45:37,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123277946] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:45:37,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:45:37,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 17:45:37,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81697531] [2024-06-04 17:45:37,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:45:37,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 17:45:37,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:45:37,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 17:45:37,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 17:45:37,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:45:37,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 152 transitions, 1437 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:45:37,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:45:37,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:45:37,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:45:38,137 INFO L124 PetriNetUnfolderBase]: 402/714 cut-off events. [2024-06-04 17:45:38,138 INFO L125 PetriNetUnfolderBase]: For 48117/48117 co-relation queries the response was YES. [2024-06-04 17:45:38,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4837 conditions, 714 events. 402/714 cut-off events. For 48117/48117 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3149 event pairs, 43 based on Foata normal form. 2/716 useless extension candidates. Maximal degree in co-relation 4754. Up to 645 conditions per place. [2024-06-04 17:45:38,143 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 145 selfloop transitions, 23 changer transitions 0/170 dead transitions. [2024-06-04 17:45:38,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 170 transitions, 2001 flow [2024-06-04 17:45:38,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 17:45:38,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 17:45:38,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-04 17:45:38,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3368055555555556 [2024-06-04 17:45:38,144 INFO L175 Difference]: Start difference. First operand has 175 places, 152 transitions, 1437 flow. Second operand 9 states and 97 transitions. [2024-06-04 17:45:38,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 170 transitions, 2001 flow [2024-06-04 17:45:38,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 170 transitions, 1942 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-04 17:45:38,221 INFO L231 Difference]: Finished difference. Result has 177 places, 156 transitions, 1519 flow [2024-06-04 17:45:38,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1378, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1519, PETRI_PLACES=177, PETRI_TRANSITIONS=156} [2024-06-04 17:45:38,222 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 146 predicate places. [2024-06-04 17:45:38,222 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 156 transitions, 1519 flow [2024-06-04 17:45:38,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:45:38,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:45:38,223 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:45:38,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-04 17:45:38,223 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)] === [2024-06-04 17:45:38,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:45:38,223 INFO L85 PathProgramCache]: Analyzing trace with hash 909675456, now seen corresponding path program 7 times [2024-06-04 17:45:38,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:45:38,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149285470] [2024-06-04 17:45:38,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:45:38,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:45:38,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:45:42,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:45:42,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:45:42,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149285470] [2024-06-04 17:45:42,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149285470] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:45:42,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:45:42,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 17:45:42,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670410099] [2024-06-04 17:45:42,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:45:42,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 17:45:42,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:45:42,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 17:45:42,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 17:45:42,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:45:42,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 156 transitions, 1519 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:45:42,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:45:42,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:45:42,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:45:42,436 INFO L124 PetriNetUnfolderBase]: 405/719 cut-off events. [2024-06-04 17:45:42,437 INFO L125 PetriNetUnfolderBase]: For 48208/48208 co-relation queries the response was YES. [2024-06-04 17:45:42,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4906 conditions, 719 events. 405/719 cut-off events. For 48208/48208 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3184 event pairs, 50 based on Foata normal form. 1/720 useless extension candidates. Maximal degree in co-relation 4822. Up to 692 conditions per place. [2024-06-04 17:45:42,442 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 150 selfloop transitions, 15 changer transitions 0/167 dead transitions. [2024-06-04 17:45:42,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 167 transitions, 1906 flow [2024-06-04 17:45:42,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 17:45:42,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 17:45:42,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 89 transitions. [2024-06-04 17:45:42,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3090277777777778 [2024-06-04 17:45:42,443 INFO L175 Difference]: Start difference. First operand has 177 places, 156 transitions, 1519 flow. Second operand 9 states and 89 transitions. [2024-06-04 17:45:42,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 167 transitions, 1906 flow [2024-06-04 17:45:42,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 167 transitions, 1842 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-04 17:45:42,525 INFO L231 Difference]: Finished difference. Result has 181 places, 158 transitions, 1531 flow [2024-06-04 17:45:42,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1455, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1531, PETRI_PLACES=181, PETRI_TRANSITIONS=158} [2024-06-04 17:45:42,526 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 150 predicate places. [2024-06-04 17:45:42,526 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 158 transitions, 1531 flow [2024-06-04 17:45:42,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:45:42,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:45:42,526 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:45:42,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-04 17:45:42,527 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)] === [2024-06-04 17:45:42,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:45:42,527 INFO L85 PathProgramCache]: Analyzing trace with hash 909683113, now seen corresponding path program 7 times [2024-06-04 17:45:42,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:45:42,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175245986] [2024-06-04 17:45:42,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:45:42,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:45:42,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:45:46,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:45:46,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:45:46,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175245986] [2024-06-04 17:45:46,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175245986] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:45:46,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:45:46,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 17:45:46,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379902246] [2024-06-04 17:45:46,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:45:46,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 17:45:46,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:45:46,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 17:45:46,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 17:45:47,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:45:47,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 158 transitions, 1531 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:45:47,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:45:47,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:45:47,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:45:47,525 INFO L124 PetriNetUnfolderBase]: 401/713 cut-off events. [2024-06-04 17:45:47,526 INFO L125 PetriNetUnfolderBase]: For 47589/47589 co-relation queries the response was YES. [2024-06-04 17:45:47,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4726 conditions, 713 events. 401/713 cut-off events. For 47589/47589 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3153 event pairs, 43 based on Foata normal form. 2/715 useless extension candidates. Maximal degree in co-relation 4640. Up to 647 conditions per place. [2024-06-04 17:45:47,530 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 147 selfloop transitions, 22 changer transitions 0/171 dead transitions. [2024-06-04 17:45:47,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 171 transitions, 1897 flow [2024-06-04 17:45:47,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 17:45:47,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 17:45:47,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-04 17:45:47,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3368055555555556 [2024-06-04 17:45:47,531 INFO L175 Difference]: Start difference. First operand has 181 places, 158 transitions, 1531 flow. Second operand 9 states and 97 transitions. [2024-06-04 17:45:47,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 171 transitions, 1897 flow [2024-06-04 17:45:47,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 171 transitions, 1822 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-04 17:45:47,613 INFO L231 Difference]: Finished difference. Result has 183 places, 158 transitions, 1505 flow [2024-06-04 17:45:47,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1456, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1505, PETRI_PLACES=183, PETRI_TRANSITIONS=158} [2024-06-04 17:45:47,614 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 152 predicate places. [2024-06-04 17:45:47,614 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 158 transitions, 1505 flow [2024-06-04 17:45:47,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:45:47,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:45:47,614 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:45:47,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-04 17:45:47,614 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)] === [2024-06-04 17:45:47,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:45:47,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1923055591, now seen corresponding path program 8 times [2024-06-04 17:45:47,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:45:47,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241045912] [2024-06-04 17:45:47,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:45:47,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:45:47,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:45:51,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:45:51,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:45:51,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241045912] [2024-06-04 17:45:51,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241045912] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:45:51,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:45:51,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 17:45:51,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182085763] [2024-06-04 17:45:51,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:45:51,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 17:45:51,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:45:51,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 17:45:51,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 17:45:51,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:45:51,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 158 transitions, 1505 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:45:51,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:45:51,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:45:51,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:45:52,009 INFO L124 PetriNetUnfolderBase]: 407/723 cut-off events. [2024-06-04 17:45:52,010 INFO L125 PetriNetUnfolderBase]: For 49343/49343 co-relation queries the response was YES. [2024-06-04 17:45:52,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4812 conditions, 723 events. 407/723 cut-off events. For 49343/49343 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3209 event pairs, 47 based on Foata normal form. 2/725 useless extension candidates. Maximal degree in co-relation 4725. Up to 659 conditions per place. [2024-06-04 17:45:52,017 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 151 selfloop transitions, 23 changer transitions 0/176 dead transitions. [2024-06-04 17:45:52,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 176 transitions, 2095 flow [2024-06-04 17:45:52,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 17:45:52,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 17:45:52,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-04 17:45:52,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3472222222222222 [2024-06-04 17:45:52,018 INFO L175 Difference]: Start difference. First operand has 183 places, 158 transitions, 1505 flow. Second operand 9 states and 100 transitions. [2024-06-04 17:45:52,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 176 transitions, 2095 flow [2024-06-04 17:45:52,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 176 transitions, 2039 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-04 17:45:52,119 INFO L231 Difference]: Finished difference. Result has 184 places, 162 transitions, 1598 flow [2024-06-04 17:45:52,120 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1449, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1598, PETRI_PLACES=184, PETRI_TRANSITIONS=162} [2024-06-04 17:45:52,120 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 153 predicate places. [2024-06-04 17:45:52,120 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 162 transitions, 1598 flow [2024-06-04 17:45:52,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:45:52,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:45:52,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:45:52,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-04 17:45:52,121 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)] === [2024-06-04 17:45:52,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:45:52,121 INFO L85 PathProgramCache]: Analyzing trace with hash 652973136, now seen corresponding path program 8 times [2024-06-04 17:45:52,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:45:52,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802782786] [2024-06-04 17:45:52,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:45:52,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:45:52,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:45:56,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:45:56,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:45:56,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802782786] [2024-06-04 17:45:56,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802782786] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:45:56,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:45:56,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 17:45:56,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092252586] [2024-06-04 17:45:56,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:45:56,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 17:45:56,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:45:56,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 17:45:56,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-04 17:45:56,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:45:56,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 162 transitions, 1598 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:45:56,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:45:56,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:45:56,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:45:56,925 INFO L124 PetriNetUnfolderBase]: 410/728 cut-off events. [2024-06-04 17:45:56,926 INFO L125 PetriNetUnfolderBase]: For 49384/49384 co-relation queries the response was YES. [2024-06-04 17:45:56,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4886 conditions, 728 events. 410/728 cut-off events. For 49384/49384 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3244 event pairs, 52 based on Foata normal form. 1/729 useless extension candidates. Maximal degree in co-relation 4798. Up to 692 conditions per place. [2024-06-04 17:45:56,931 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 151 selfloop transitions, 20 changer transitions 0/173 dead transitions. [2024-06-04 17:45:56,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 173 transitions, 2001 flow [2024-06-04 17:45:56,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 17:45:56,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 17:45:56,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 92 transitions. [2024-06-04 17:45:56,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3194444444444444 [2024-06-04 17:45:56,932 INFO L175 Difference]: Start difference. First operand has 184 places, 162 transitions, 1598 flow. Second operand 9 states and 92 transitions. [2024-06-04 17:45:56,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 173 transitions, 2001 flow [2024-06-04 17:45:57,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 173 transitions, 1930 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-06-04 17:45:57,029 INFO L231 Difference]: Finished difference. Result has 188 places, 164 transitions, 1617 flow [2024-06-04 17:45:57,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1527, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1617, PETRI_PLACES=188, PETRI_TRANSITIONS=164} [2024-06-04 17:45:57,029 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 157 predicate places. [2024-06-04 17:45:57,030 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 164 transitions, 1617 flow [2024-06-04 17:45:57,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:45:57,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:45:57,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:45:57,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-04 17:45:57,030 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)] === [2024-06-04 17:45:57,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:45:57,031 INFO L85 PathProgramCache]: Analyzing trace with hash 653182603, now seen corresponding path program 9 times [2024-06-04 17:45:57,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:45:57,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876495786] [2024-06-04 17:45:57,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:45:57,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:45:57,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:46:01,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:46:01,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:46:01,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876495786] [2024-06-04 17:46:01,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876495786] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:46:01,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:46:01,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 17:46:01,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224521219] [2024-06-04 17:46:01,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:46:01,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 17:46:01,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:46:01,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 17:46:01,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 17:46:01,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:46:01,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 164 transitions, 1617 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:46:01,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:46:01,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:46:01,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:46:01,871 INFO L124 PetriNetUnfolderBase]: 416/738 cut-off events. [2024-06-04 17:46:01,872 INFO L125 PetriNetUnfolderBase]: For 52484/52484 co-relation queries the response was YES. [2024-06-04 17:46:01,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4941 conditions, 738 events. 416/738 cut-off events. For 52484/52484 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3301 event pairs, 48 based on Foata normal form. 2/740 useless extension candidates. Maximal degree in co-relation 4851. Up to 670 conditions per place. [2024-06-04 17:46:01,877 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 151 selfloop transitions, 26 changer transitions 0/179 dead transitions. [2024-06-04 17:46:01,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 179 transitions, 2164 flow [2024-06-04 17:46:01,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 17:46:01,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 17:46:01,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-04 17:46:01,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3402777777777778 [2024-06-04 17:46:01,878 INFO L175 Difference]: Start difference. First operand has 188 places, 164 transitions, 1617 flow. Second operand 9 states and 98 transitions. [2024-06-04 17:46:01,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 179 transitions, 2164 flow [2024-06-04 17:46:01,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 179 transitions, 2097 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-04 17:46:01,965 INFO L231 Difference]: Finished difference. Result has 190 places, 166 transitions, 1650 flow [2024-06-04 17:46:01,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1550, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1650, PETRI_PLACES=190, PETRI_TRANSITIONS=166} [2024-06-04 17:46:01,966 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 159 predicate places. [2024-06-04 17:46:01,966 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 166 transitions, 1650 flow [2024-06-04 17:46:01,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:46:01,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:46:01,966 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:46:01,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-04 17:46:01,966 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)] === [2024-06-04 17:46:01,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:46:01,967 INFO L85 PathProgramCache]: Analyzing trace with hash 653175163, now seen corresponding path program 10 times [2024-06-04 17:46:01,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:46:01,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708771596] [2024-06-04 17:46:01,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:46:01,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:46:02,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:46:06,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:46:06,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:46:06,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708771596] [2024-06-04 17:46:06,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708771596] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:46:06,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:46:06,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 17:46:06,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237654015] [2024-06-04 17:46:06,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:46:06,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 17:46:06,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:46:06,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 17:46:06,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 17:46:06,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:46:06,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 166 transitions, 1650 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:46:06,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:46:06,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:46:06,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:46:07,101 INFO L124 PetriNetUnfolderBase]: 412/732 cut-off events. [2024-06-04 17:46:07,102 INFO L125 PetriNetUnfolderBase]: For 50283/50283 co-relation queries the response was YES. [2024-06-04 17:46:07,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4801 conditions, 732 events. 412/732 cut-off events. For 50283/50283 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3284 event pairs, 47 based on Foata normal form. 2/734 useless extension candidates. Maximal degree in co-relation 4710. Up to 667 conditions per place. [2024-06-04 17:46:07,107 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 152 selfloop transitions, 25 changer transitions 0/179 dead transitions. [2024-06-04 17:46:07,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 179 transitions, 2032 flow [2024-06-04 17:46:07,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 17:46:07,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 17:46:07,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-04 17:46:07,108 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-04 17:46:07,109 INFO L175 Difference]: Start difference. First operand has 190 places, 166 transitions, 1650 flow. Second operand 9 states and 99 transitions. [2024-06-04 17:46:07,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 179 transitions, 2032 flow [2024-06-04 17:46:07,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 179 transitions, 1917 flow, removed 32 selfloop flow, removed 7 redundant places. [2024-06-04 17:46:07,196 INFO L231 Difference]: Finished difference. Result has 192 places, 166 transitions, 1590 flow [2024-06-04 17:46:07,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1535, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1590, PETRI_PLACES=192, PETRI_TRANSITIONS=166} [2024-06-04 17:46:07,196 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 161 predicate places. [2024-06-04 17:46:07,196 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 166 transitions, 1590 flow [2024-06-04 17:46:07,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:46:07,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:46:07,197 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:46:07,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-04 17:46:07,197 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)] === [2024-06-04 17:46:07,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:46:07,197 INFO L85 PathProgramCache]: Analyzing trace with hash 652967401, now seen corresponding path program 9 times [2024-06-04 17:46:07,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:46:07,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801819069] [2024-06-04 17:46:07,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:46:07,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:46:07,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:46:11,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:46:11,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:46:11,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801819069] [2024-06-04 17:46:11,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801819069] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:46:11,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:46:11,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 17:46:11,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043886507] [2024-06-04 17:46:11,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:46:11,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 17:46:11,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:46:11,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 17:46:11,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-04 17:46:12,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:46:12,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 166 transitions, 1590 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:46:12,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:46:12,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:46:12,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:46:12,550 INFO L124 PetriNetUnfolderBase]: 409/727 cut-off events. [2024-06-04 17:46:12,550 INFO L125 PetriNetUnfolderBase]: For 47356/47356 co-relation queries the response was YES. [2024-06-04 17:46:12,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4571 conditions, 727 events. 409/727 cut-off events. For 47356/47356 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3253 event pairs, 49 based on Foata normal form. 2/729 useless extension candidates. Maximal degree in co-relation 4480. Up to 697 conditions per place. [2024-06-04 17:46:12,556 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 160 selfloop transitions, 14 changer transitions 0/176 dead transitions. [2024-06-04 17:46:12,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 176 transitions, 1960 flow [2024-06-04 17:46:12,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 17:46:12,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 17:46:12,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 89 transitions. [2024-06-04 17:46:12,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3090277777777778 [2024-06-04 17:46:12,558 INFO L175 Difference]: Start difference. First operand has 192 places, 166 transitions, 1590 flow. Second operand 9 states and 89 transitions. [2024-06-04 17:46:12,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 176 transitions, 1960 flow [2024-06-04 17:46:12,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 176 transitions, 1894 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-04 17:46:12,650 INFO L231 Difference]: Finished difference. Result has 192 places, 166 transitions, 1556 flow [2024-06-04 17:46:12,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1524, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1556, PETRI_PLACES=192, PETRI_TRANSITIONS=166} [2024-06-04 17:46:12,651 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 161 predicate places. [2024-06-04 17:46:12,651 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 166 transitions, 1556 flow [2024-06-04 17:46:12,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:46:12,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:46:12,651 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:46:12,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-04 17:46:12,652 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)] === [2024-06-04 17:46:12,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:46:12,652 INFO L85 PathProgramCache]: Analyzing trace with hash 653174946, now seen corresponding path program 9 times [2024-06-04 17:46:12,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:46:12,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566354943] [2024-06-04 17:46:12,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:46:12,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:46:12,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:46:17,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:46:17,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:46:17,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566354943] [2024-06-04 17:46:17,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566354943] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:46:17,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:46:17,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 17:46:17,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689495322] [2024-06-04 17:46:17,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:46:17,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 17:46:17,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:46:17,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 17:46:17,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-04 17:46:17,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:46:17,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 166 transitions, 1556 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:46:17,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:46:17,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:46:17,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:46:17,871 INFO L124 PetriNetUnfolderBase]: 407/724 cut-off events. [2024-06-04 17:46:17,871 INFO L125 PetriNetUnfolderBase]: For 44633/44633 co-relation queries the response was YES. [2024-06-04 17:46:17,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4465 conditions, 724 events. 407/724 cut-off events. For 44633/44633 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3233 event pairs, 50 based on Foata normal form. 1/725 useless extension candidates. Maximal degree in co-relation 4373. Up to 688 conditions per place. [2024-06-04 17:46:17,877 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 153 selfloop transitions, 20 changer transitions 0/175 dead transitions. [2024-06-04 17:46:17,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 175 transitions, 1922 flow [2024-06-04 17:46:17,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 17:46:17,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 17:46:17,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 92 transitions. [2024-06-04 17:46:17,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3194444444444444 [2024-06-04 17:46:17,878 INFO L175 Difference]: Start difference. First operand has 192 places, 166 transitions, 1556 flow. Second operand 9 states and 92 transitions. [2024-06-04 17:46:17,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 175 transitions, 1922 flow [2024-06-04 17:46:17,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 175 transitions, 1783 flow, removed 8 selfloop flow, removed 12 redundant places. [2024-06-04 17:46:17,981 INFO L231 Difference]: Finished difference. Result has 189 places, 166 transitions, 1462 flow [2024-06-04 17:46:18,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1417, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1462, PETRI_PLACES=189, PETRI_TRANSITIONS=166} [2024-06-04 17:46:18,000 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 158 predicate places. [2024-06-04 17:46:18,001 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 166 transitions, 1462 flow [2024-06-04 17:46:18,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:46:18,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:46:18,001 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:46:18,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-04 17:46:18,001 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)] === [2024-06-04 17:46:18,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:46:18,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1338834570, now seen corresponding path program 1 times [2024-06-04 17:46:18,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:46:18,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612814821] [2024-06-04 17:46:18,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:46:18,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:46:18,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:46:21,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:46:21,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:46:21,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612814821] [2024-06-04 17:46:21,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612814821] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:46:21,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:46:21,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 17:46:21,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792902172] [2024-06-04 17:46:21,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:46:21,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 17:46:21,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:46:21,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 17:46:21,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 17:46:22,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:46:22,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 166 transitions, 1462 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:46:22,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:46:22,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:46:22,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:46:22,341 INFO L124 PetriNetUnfolderBase]: 411/732 cut-off events. [2024-06-04 17:46:22,341 INFO L125 PetriNetUnfolderBase]: For 47725/47725 co-relation queries the response was YES. [2024-06-04 17:46:22,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4408 conditions, 732 events. 411/732 cut-off events. For 47725/47725 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3290 event pairs, 33 based on Foata normal form. 2/734 useless extension candidates. Maximal degree in co-relation 4316. Up to 372 conditions per place. [2024-06-04 17:46:22,346 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 129 selfloop transitions, 53 changer transitions 0/184 dead transitions. [2024-06-04 17:46:22,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 184 transitions, 2000 flow [2024-06-04 17:46:22,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 17:46:22,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 17:46:22,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-04 17:46:22,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-04 17:46:22,348 INFO L175 Difference]: Start difference. First operand has 189 places, 166 transitions, 1462 flow. Second operand 9 states and 99 transitions. [2024-06-04 17:46:22,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 184 transitions, 2000 flow [2024-06-04 17:46:22,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 184 transitions, 1885 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-04 17:46:22,442 INFO L231 Difference]: Finished difference. Result has 189 places, 167 transitions, 1463 flow [2024-06-04 17:46:22,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1347, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1463, PETRI_PLACES=189, PETRI_TRANSITIONS=167} [2024-06-04 17:46:22,442 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 158 predicate places. [2024-06-04 17:46:22,442 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 167 transitions, 1463 flow [2024-06-04 17:46:22,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:46:22,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:46:22,443 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:46:22,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-04 17:46:22,443 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)] === [2024-06-04 17:46:22,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:46:22,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1396927020, now seen corresponding path program 2 times [2024-06-04 17:46:22,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:46:22,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568165279] [2024-06-04 17:46:22,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:46:22,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:46:22,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:46:26,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:46:26,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:46:26,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568165279] [2024-06-04 17:46:26,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568165279] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:46:26,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:46:26,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 17:46:26,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538600487] [2024-06-04 17:46:26,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:46:26,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 17:46:26,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:46:26,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 17:46:26,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-04 17:46:26,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:46:26,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 167 transitions, 1463 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:46:26,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:46:26,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:46:26,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:46:26,846 INFO L124 PetriNetUnfolderBase]: 422/753 cut-off events. [2024-06-04 17:46:26,846 INFO L125 PetriNetUnfolderBase]: For 53416/53416 co-relation queries the response was YES. [2024-06-04 17:46:26,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4623 conditions, 753 events. 422/753 cut-off events. For 53416/53416 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3434 event pairs, 52 based on Foata normal form. 2/755 useless extension candidates. Maximal degree in co-relation 4531. Up to 505 conditions per place. [2024-06-04 17:46:26,853 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 124 selfloop transitions, 59 changer transitions 0/185 dead transitions. [2024-06-04 17:46:26,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 185 transitions, 2013 flow [2024-06-04 17:46:26,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 17:46:26,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 17:46:26,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-04 17:46:26,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3680555555555556 [2024-06-04 17:46:26,855 INFO L175 Difference]: Start difference. First operand has 189 places, 167 transitions, 1463 flow. Second operand 9 states and 106 transitions. [2024-06-04 17:46:26,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 185 transitions, 2013 flow [2024-06-04 17:46:26,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 185 transitions, 1919 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-04 17:46:26,973 INFO L231 Difference]: Finished difference. Result has 192 places, 169 transitions, 1509 flow [2024-06-04 17:46:26,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1375, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1509, PETRI_PLACES=192, PETRI_TRANSITIONS=169} [2024-06-04 17:46:26,974 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 161 predicate places. [2024-06-04 17:46:26,974 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 169 transitions, 1509 flow [2024-06-04 17:46:26,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:46:26,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:46:26,974 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:46:26,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-04 17:46:26,975 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)] === [2024-06-04 17:46:26,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:46:26,975 INFO L85 PathProgramCache]: Analyzing trace with hash -321301366, now seen corresponding path program 3 times [2024-06-04 17:46:26,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:46:26,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410372759] [2024-06-04 17:46:26,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:46:26,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:46:27,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:46:31,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:46:31,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:46:31,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410372759] [2024-06-04 17:46:31,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410372759] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:46:31,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:46:31,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 17:46:31,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525359777] [2024-06-04 17:46:31,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:46:31,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 17:46:31,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:46:31,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 17:46:31,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 17:46:31,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:46:31,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 169 transitions, 1509 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:46:31,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:46:31,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:46:31,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:46:31,432 INFO L124 PetriNetUnfolderBase]: 433/774 cut-off events. [2024-06-04 17:46:31,432 INFO L125 PetriNetUnfolderBase]: For 59748/59748 co-relation queries the response was YES. [2024-06-04 17:46:31,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4879 conditions, 774 events. 433/774 cut-off events. For 59748/59748 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3588 event pairs, 55 based on Foata normal form. 2/776 useless extension candidates. Maximal degree in co-relation 4786. Up to 568 conditions per place. [2024-06-04 17:46:31,439 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 122 selfloop transitions, 62 changer transitions 0/186 dead transitions. [2024-06-04 17:46:31,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 186 transitions, 2059 flow [2024-06-04 17:46:31,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 17:46:31,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 17:46:31,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-04 17:46:31,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-04 17:46:31,440 INFO L175 Difference]: Start difference. First operand has 192 places, 169 transitions, 1509 flow. Second operand 9 states and 108 transitions. [2024-06-04 17:46:31,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 186 transitions, 2059 flow [2024-06-04 17:46:31,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 186 transitions, 1987 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-04 17:46:31,581 INFO L231 Difference]: Finished difference. Result has 196 places, 171 transitions, 1581 flow [2024-06-04 17:46:31,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1437, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1581, PETRI_PLACES=196, PETRI_TRANSITIONS=171} [2024-06-04 17:46:31,581 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 165 predicate places. [2024-06-04 17:46:31,581 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 171 transitions, 1581 flow [2024-06-04 17:46:31,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:46:31,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:46:31,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:46:31,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-04 17:46:31,582 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)] === [2024-06-04 17:46:31,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:46:31,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1794241590, now seen corresponding path program 4 times [2024-06-04 17:46:31,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:46:31,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749445721] [2024-06-04 17:46:31,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:46:31,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:46:31,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:46:35,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:46:35,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:46:35,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749445721] [2024-06-04 17:46:35,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749445721] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:46:35,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:46:35,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 17:46:35,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185362282] [2024-06-04 17:46:35,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:46:35,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 17:46:35,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:46:35,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 17:46:35,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 17:46:35,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:46:35,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 171 transitions, 1581 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:46:35,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:46:35,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:46:35,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:46:36,097 INFO L124 PetriNetUnfolderBase]: 430/769 cut-off events. [2024-06-04 17:46:36,098 INFO L125 PetriNetUnfolderBase]: For 56948/56948 co-relation queries the response was YES. [2024-06-04 17:46:36,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4862 conditions, 769 events. 430/769 cut-off events. For 56948/56948 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3568 event pairs, 56 based on Foata normal form. 2/771 useless extension candidates. Maximal degree in co-relation 4767. Up to 580 conditions per place. [2024-06-04 17:46:36,104 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 120 selfloop transitions, 62 changer transitions 0/184 dead transitions. [2024-06-04 17:46:36,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 184 transitions, 1975 flow [2024-06-04 17:46:36,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 17:46:36,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 17:46:36,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-04 17:46:36,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3715277777777778 [2024-06-04 17:46:36,114 INFO L175 Difference]: Start difference. First operand has 196 places, 171 transitions, 1581 flow. Second operand 9 states and 107 transitions. [2024-06-04 17:46:36,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 184 transitions, 1975 flow [2024-06-04 17:46:36,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 184 transitions, 1896 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-04 17:46:36,235 INFO L231 Difference]: Finished difference. Result has 200 places, 171 transitions, 1630 flow [2024-06-04 17:46:36,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1502, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1630, PETRI_PLACES=200, PETRI_TRANSITIONS=171} [2024-06-04 17:46:36,237 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 169 predicate places. [2024-06-04 17:46:36,237 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 171 transitions, 1630 flow [2024-06-04 17:46:36,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:46:36,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:46:36,237 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:46:36,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-04 17:46:36,238 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)] === [2024-06-04 17:46:36,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:46:36,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1079566550, now seen corresponding path program 1 times [2024-06-04 17:46:36,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:46:36,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164668800] [2024-06-04 17:46:36,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:46:36,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:46:36,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:46:41,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:46:41,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:46:41,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164668800] [2024-06-04 17:46:41,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164668800] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:46:41,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:46:41,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 17:46:41,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430947371] [2024-06-04 17:46:41,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:46:41,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 17:46:41,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:46:41,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 17:46:41,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 17:46:41,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:46:41,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 171 transitions, 1630 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) [2024-06-04 17:46:41,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:46:41,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:46:41,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:46:42,529 INFO L124 PetriNetUnfolderBase]: 436/779 cut-off events. [2024-06-04 17:46:42,529 INFO L125 PetriNetUnfolderBase]: For 58590/58590 co-relation queries the response was YES. [2024-06-04 17:46:42,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5019 conditions, 779 events. 436/779 cut-off events. For 58590/58590 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 3626 event pairs, 50 based on Foata normal form. 2/781 useless extension candidates. Maximal degree in co-relation 4922. Up to 388 conditions per place. [2024-06-04 17:46:42,536 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 123 selfloop transitions, 68 changer transitions 0/193 dead transitions. [2024-06-04 17:46:42,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 193 transitions, 2348 flow [2024-06-04 17:46:42,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 17:46:42,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 17:46:42,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-04 17:46:42,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-04 17:46:42,538 INFO L175 Difference]: Start difference. First operand has 200 places, 171 transitions, 1630 flow. Second operand 10 states and 127 transitions. [2024-06-04 17:46:42,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 193 transitions, 2348 flow [2024-06-04 17:46:42,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 193 transitions, 2222 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-04 17:46:42,664 INFO L231 Difference]: Finished difference. Result has 202 places, 173 transitions, 1661 flow [2024-06-04 17:46:42,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1504, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1661, PETRI_PLACES=202, PETRI_TRANSITIONS=173} [2024-06-04 17:46:42,665 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 171 predicate places. [2024-06-04 17:46:42,665 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 173 transitions, 1661 flow [2024-06-04 17:46:42,665 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) [2024-06-04 17:46:42,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:46:42,665 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:46:42,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-04 17:46:42,666 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)] === [2024-06-04 17:46:42,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:46:42,666 INFO L85 PathProgramCache]: Analyzing trace with hash 897846336, now seen corresponding path program 2 times [2024-06-04 17:46:42,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:46:42,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743966400] [2024-06-04 17:46:42,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:46:42,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:46:42,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:46:47,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:46:47,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:46:47,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743966400] [2024-06-04 17:46:47,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743966400] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:46:47,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:46:47,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 17:46:47,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517772787] [2024-06-04 17:46:47,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:46:47,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 17:46:47,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:46:47,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 17:46:47,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-04 17:46:47,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:46:47,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 173 transitions, 1661 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) [2024-06-04 17:46:47,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:46:47,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:46:47,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:46:48,039 INFO L124 PetriNetUnfolderBase]: 442/789 cut-off events. [2024-06-04 17:46:48,040 INFO L125 PetriNetUnfolderBase]: For 60430/60430 co-relation queries the response was YES. [2024-06-04 17:46:48,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5126 conditions, 789 events. 442/789 cut-off events. For 60430/60430 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 3678 event pairs, 49 based on Foata normal form. 2/791 useless extension candidates. Maximal degree in co-relation 5028. Up to 548 conditions per place. [2024-06-04 17:46:48,046 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 132 selfloop transitions, 61 changer transitions 0/195 dead transitions. [2024-06-04 17:46:48,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 195 transitions, 2121 flow [2024-06-04 17:46:48,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 17:46:48,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 17:46:48,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-04 17:46:48,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36875 [2024-06-04 17:46:48,047 INFO L175 Difference]: Start difference. First operand has 202 places, 173 transitions, 1661 flow. Second operand 10 states and 118 transitions. [2024-06-04 17:46:48,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 195 transitions, 2121 flow [2024-06-04 17:46:48,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 195 transitions, 1971 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-04 17:46:48,180 INFO L231 Difference]: Finished difference. Result has 206 places, 177 transitions, 1731 flow [2024-06-04 17:46:48,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1519, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1731, PETRI_PLACES=206, PETRI_TRANSITIONS=177} [2024-06-04 17:46:48,180 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 175 predicate places. [2024-06-04 17:46:48,180 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 177 transitions, 1731 flow [2024-06-04 17:46:48,180 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) [2024-06-04 17:46:48,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:46:48,181 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:46:48,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-04 17:46:48,181 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)] === [2024-06-04 17:46:48,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:46:48,181 INFO L85 PathProgramCache]: Analyzing trace with hash 897846150, now seen corresponding path program 5 times [2024-06-04 17:46:48,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:46:48,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145830914] [2024-06-04 17:46:48,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:46:48,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:46:48,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:46:52,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:46:52,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:46:52,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145830914] [2024-06-04 17:46:52,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145830914] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:46:52,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:46:52,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 17:46:52,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638835055] [2024-06-04 17:46:52,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:46:52,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 17:46:52,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:46:52,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 17:46:52,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-04 17:46:52,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:46:52,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 177 transitions, 1731 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) [2024-06-04 17:46:52,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:46:52,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:46:52,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:46:52,908 INFO L124 PetriNetUnfolderBase]: 446/797 cut-off events. [2024-06-04 17:46:52,908 INFO L125 PetriNetUnfolderBase]: For 62181/62181 co-relation queries the response was YES. [2024-06-04 17:46:52,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5283 conditions, 797 events. 446/797 cut-off events. For 62181/62181 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 3725 event pairs, 58 based on Foata normal form. 2/799 useless extension candidates. Maximal degree in co-relation 5182. Up to 680 conditions per place. [2024-06-04 17:46:52,915 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 150 selfloop transitions, 40 changer transitions 0/192 dead transitions. [2024-06-04 17:46:52,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 192 transitions, 2152 flow [2024-06-04 17:46:52,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 17:46:52,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 17:46:52,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-04 17:46:52,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.340625 [2024-06-04 17:46:52,917 INFO L175 Difference]: Start difference. First operand has 206 places, 177 transitions, 1731 flow. Second operand 10 states and 109 transitions. [2024-06-04 17:46:52,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 192 transitions, 2152 flow [2024-06-04 17:46:53,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 192 transitions, 2078 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-04 17:46:53,043 INFO L231 Difference]: Finished difference. Result has 210 places, 178 transitions, 1752 flow [2024-06-04 17:46:53,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1657, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1752, PETRI_PLACES=210, PETRI_TRANSITIONS=178} [2024-06-04 17:46:53,044 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 179 predicate places. [2024-06-04 17:46:53,044 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 178 transitions, 1752 flow [2024-06-04 17:46:53,044 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) [2024-06-04 17:46:53,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:46:53,044 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:46:53,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-04 17:46:53,045 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)] === [2024-06-04 17:46:53,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:46:53,045 INFO L85 PathProgramCache]: Analyzing trace with hash -206005360, now seen corresponding path program 3 times [2024-06-04 17:46:53,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:46:53,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90028946] [2024-06-04 17:46:53,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:46:53,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:46:53,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:46:57,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:46:57,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:46:57,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90028946] [2024-06-04 17:46:57,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90028946] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:46:57,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:46:57,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 17:46:57,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657724595] [2024-06-04 17:46:57,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:46:57,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 17:46:57,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:46:57,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 17:46:57,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 17:46:57,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:46:57,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 178 transitions, 1752 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:46:57,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:46:57,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:46:57,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:46:58,132 INFO L124 PetriNetUnfolderBase]: 442/791 cut-off events. [2024-06-04 17:46:58,132 INFO L125 PetriNetUnfolderBase]: For 58824/58824 co-relation queries the response was YES. [2024-06-04 17:46:58,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5100 conditions, 791 events. 442/791 cut-off events. For 58824/58824 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 3695 event pairs, 49 based on Foata normal form. 2/793 useless extension candidates. Maximal degree in co-relation 4998. Up to 535 conditions per place. [2024-06-04 17:46:58,138 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 127 selfloop transitions, 66 changer transitions 0/195 dead transitions. [2024-06-04 17:46:58,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 195 transitions, 2176 flow [2024-06-04 17:46:58,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 17:46:58,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 17:46:58,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-04 17:46:58,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-04 17:46:58,139 INFO L175 Difference]: Start difference. First operand has 210 places, 178 transitions, 1752 flow. Second operand 9 states and 112 transitions. [2024-06-04 17:46:58,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 195 transitions, 2176 flow [2024-06-04 17:46:58,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 195 transitions, 2090 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-04 17:46:58,252 INFO L231 Difference]: Finished difference. Result has 211 places, 178 transitions, 1803 flow [2024-06-04 17:46:58,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1666, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1803, PETRI_PLACES=211, PETRI_TRANSITIONS=178} [2024-06-04 17:46:58,253 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 180 predicate places. [2024-06-04 17:46:58,253 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 178 transitions, 1803 flow [2024-06-04 17:46:58,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:46:58,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:46:58,253 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:46:58,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-04 17:46:58,253 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)] === [2024-06-04 17:46:58,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:46:58,254 INFO L85 PathProgramCache]: Analyzing trace with hash -206005546, now seen corresponding path program 6 times [2024-06-04 17:46:58,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:46:58,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396385003] [2024-06-04 17:46:58,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:46:58,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:46:58,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:47:02,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:47:02,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:47:02,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396385003] [2024-06-04 17:47:02,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396385003] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:47:02,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:47:02,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 17:47:02,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641098552] [2024-06-04 17:47:02,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:47:02,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 17:47:02,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:47:02,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 17:47:02,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-04 17:47:02,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:47:02,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 178 transitions, 1803 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:47:02,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:47:02,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:47:02,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:47:02,971 INFO L124 PetriNetUnfolderBase]: 446/799 cut-off events. [2024-06-04 17:47:02,971 INFO L125 PetriNetUnfolderBase]: For 60611/60611 co-relation queries the response was YES. [2024-06-04 17:47:02,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5225 conditions, 799 events. 446/799 cut-off events. For 60611/60611 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 3757 event pairs, 57 based on Foata normal form. 2/801 useless extension candidates. Maximal degree in co-relation 5122. Up to 673 conditions per place. [2024-06-04 17:47:02,978 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 146 selfloop transitions, 44 changer transitions 0/192 dead transitions. [2024-06-04 17:47:02,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 192 transitions, 2224 flow [2024-06-04 17:47:02,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 17:47:02,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 17:47:02,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-04 17:47:02,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3576388888888889 [2024-06-04 17:47:02,979 INFO L175 Difference]: Start difference. First operand has 211 places, 178 transitions, 1803 flow. Second operand 9 states and 103 transitions. [2024-06-04 17:47:02,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 192 transitions, 2224 flow [2024-06-04 17:47:03,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 192 transitions, 2071 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-04 17:47:03,100 INFO L231 Difference]: Finished difference. Result has 212 places, 179 transitions, 1755 flow [2024-06-04 17:47:03,100 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1650, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1755, PETRI_PLACES=212, PETRI_TRANSITIONS=179} [2024-06-04 17:47:03,100 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 181 predicate places. [2024-06-04 17:47:03,100 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 179 transitions, 1755 flow [2024-06-04 17:47:03,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:47:03,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:47:03,101 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:47:03,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-04 17:47:03,101 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)] === [2024-06-04 17:47:03,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:47:03,101 INFO L85 PathProgramCache]: Analyzing trace with hash -206010196, now seen corresponding path program 7 times [2024-06-04 17:47:03,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:47:03,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756413895] [2024-06-04 17:47:03,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:47:03,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:47:03,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:47:07,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:47:07,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:47:07,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756413895] [2024-06-04 17:47:07,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756413895] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:47:07,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:47:07,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 17:47:07,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305746778] [2024-06-04 17:47:07,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:47:07,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 17:47:07,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:47:07,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 17:47:07,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-04 17:47:07,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:47:07,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 179 transitions, 1755 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:47:07,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:47:07,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:47:07,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:47:07,681 INFO L124 PetriNetUnfolderBase]: 443/794 cut-off events. [2024-06-04 17:47:07,681 INFO L125 PetriNetUnfolderBase]: For 56492/56492 co-relation queries the response was YES. [2024-06-04 17:47:07,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4996 conditions, 794 events. 443/794 cut-off events. For 56492/56492 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 3728 event pairs, 54 based on Foata normal form. 2/796 useless extension candidates. Maximal degree in co-relation 4892. Up to 642 conditions per place. [2024-06-04 17:47:07,687 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 144 selfloop transitions, 47 changer transitions 0/193 dead transitions. [2024-06-04 17:47:07,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 193 transitions, 2169 flow [2024-06-04 17:47:07,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 17:47:07,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 17:47:07,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-04 17:47:07,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-04 17:47:07,688 INFO L175 Difference]: Start difference. First operand has 212 places, 179 transitions, 1755 flow. Second operand 9 states and 105 transitions. [2024-06-04 17:47:07,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 193 transitions, 2169 flow [2024-06-04 17:47:07,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 193 transitions, 2075 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-04 17:47:07,828 INFO L231 Difference]: Finished difference. Result has 214 places, 179 transitions, 1759 flow [2024-06-04 17:47:07,828 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1661, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1759, PETRI_PLACES=214, PETRI_TRANSITIONS=179} [2024-06-04 17:47:07,828 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 183 predicate places. [2024-06-04 17:47:07,828 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 179 transitions, 1759 flow [2024-06-04 17:47:07,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:47:07,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:47:07,829 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:47:07,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-04 17:47:07,829 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)] === [2024-06-04 17:47:07,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:47:07,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1084929492, now seen corresponding path program 8 times [2024-06-04 17:47:07,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:47:07,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109364510] [2024-06-04 17:47:07,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:47:07,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:47:07,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:47:11,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:47:11,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:47:11,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109364510] [2024-06-04 17:47:11,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109364510] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:47:11,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:47:11,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 17:47:11,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530625995] [2024-06-04 17:47:11,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:47:11,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 17:47:11,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:47:11,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 17:47:11,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 17:47:11,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:47:11,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 179 transitions, 1759 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:47:11,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:47:11,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:47:11,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:47:12,183 INFO L124 PetriNetUnfolderBase]: 447/802 cut-off events. [2024-06-04 17:47:12,183 INFO L125 PetriNetUnfolderBase]: For 58057/58057 co-relation queries the response was YES. [2024-06-04 17:47:12,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5043 conditions, 802 events. 447/802 cut-off events. For 58057/58057 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 3799 event pairs, 34 based on Foata normal form. 2/804 useless extension candidates. Maximal degree in co-relation 4938. Up to 516 conditions per place. [2024-06-04 17:47:12,190 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 132 selfloop transitions, 65 changer transitions 0/199 dead transitions. [2024-06-04 17:47:12,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 199 transitions, 2354 flow [2024-06-04 17:47:12,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 17:47:12,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 17:47:12,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-04 17:47:12,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3784722222222222 [2024-06-04 17:47:12,191 INFO L175 Difference]: Start difference. First operand has 214 places, 179 transitions, 1759 flow. Second operand 9 states and 109 transitions. [2024-06-04 17:47:12,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 199 transitions, 2354 flow [2024-06-04 17:47:12,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 199 transitions, 2207 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-04 17:47:12,317 INFO L231 Difference]: Finished difference. Result has 215 places, 180 transitions, 1753 flow [2024-06-04 17:47:12,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1612, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1753, PETRI_PLACES=215, PETRI_TRANSITIONS=180} [2024-06-04 17:47:12,318 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 184 predicate places. [2024-06-04 17:47:12,318 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 180 transitions, 1753 flow [2024-06-04 17:47:12,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:47:12,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:47:12,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:47:12,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-04 17:47:12,318 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)] === [2024-06-04 17:47:12,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:47:12,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1084809522, now seen corresponding path program 9 times [2024-06-04 17:47:12,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:47:12,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157671303] [2024-06-04 17:47:12,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:47:12,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:47:12,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:47:16,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:47:16,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:47:16,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157671303] [2024-06-04 17:47:16,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157671303] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:47:16,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:47:16,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 17:47:16,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252291666] [2024-06-04 17:47:16,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:47:16,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 17:47:16,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:47:16,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 17:47:16,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 17:47:16,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:47:16,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 180 transitions, 1753 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:47:16,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:47:16,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:47:16,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:47:16,623 INFO L124 PetriNetUnfolderBase]: 451/810 cut-off events. [2024-06-04 17:47:16,624 INFO L125 PetriNetUnfolderBase]: For 59597/59597 co-relation queries the response was YES. [2024-06-04 17:47:16,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5025 conditions, 810 events. 451/810 cut-off events. For 59597/59597 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 3823 event pairs, 58 based on Foata normal form. 2/812 useless extension candidates. Maximal degree in co-relation 4920. Up to 621 conditions per place. [2024-06-04 17:47:16,631 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 128 selfloop transitions, 67 changer transitions 0/197 dead transitions. [2024-06-04 17:47:16,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 197 transitions, 2190 flow [2024-06-04 17:47:16,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 17:47:16,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 17:47:16,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-04 17:47:16,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-04 17:47:16,632 INFO L175 Difference]: Start difference. First operand has 215 places, 180 transitions, 1753 flow. Second operand 9 states and 108 transitions. [2024-06-04 17:47:16,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 197 transitions, 2190 flow [2024-06-04 17:47:16,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 197 transitions, 1997 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-04 17:47:16,803 INFO L231 Difference]: Finished difference. Result has 216 places, 181 transitions, 1709 flow [2024-06-04 17:47:16,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1564, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1709, PETRI_PLACES=216, PETRI_TRANSITIONS=181} [2024-06-04 17:47:16,804 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 185 predicate places. [2024-06-04 17:47:16,804 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 181 transitions, 1709 flow [2024-06-04 17:47:16,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:47:16,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:47:16,804 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:47:16,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-04 17:47:16,804 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)] === [2024-06-04 17:47:16,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:47:16,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1084814172, now seen corresponding path program 10 times [2024-06-04 17:47:16,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:47:16,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893431865] [2024-06-04 17:47:16,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:47:16,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:47:16,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:47:20,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:47:20,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:47:20,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893431865] [2024-06-04 17:47:20,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893431865] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:47:20,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:47:20,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 17:47:20,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100532749] [2024-06-04 17:47:20,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:47:20,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 17:47:20,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:47:20,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 17:47:20,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 17:47:20,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:47:20,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 181 transitions, 1709 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:47:20,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:47:20,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:47:20,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:47:21,262 INFO L124 PetriNetUnfolderBase]: 455/818 cut-off events. [2024-06-04 17:47:21,262 INFO L125 PetriNetUnfolderBase]: For 60947/60947 co-relation queries the response was YES. [2024-06-04 17:47:21,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4938 conditions, 818 events. 455/818 cut-off events. For 60947/60947 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 3898 event pairs, 58 based on Foata normal form. 2/820 useless extension candidates. Maximal degree in co-relation 4833. Up to 615 conditions per place. [2024-06-04 17:47:21,269 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 130 selfloop transitions, 67 changer transitions 0/199 dead transitions. [2024-06-04 17:47:21,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 199 transitions, 2150 flow [2024-06-04 17:47:21,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 17:47:21,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 17:47:21,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-04 17:47:21,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3784722222222222 [2024-06-04 17:47:21,270 INFO L175 Difference]: Start difference. First operand has 216 places, 181 transitions, 1709 flow. Second operand 9 states and 109 transitions. [2024-06-04 17:47:21,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 199 transitions, 2150 flow [2024-06-04 17:47:21,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 199 transitions, 2016 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-04 17:47:21,416 INFO L231 Difference]: Finished difference. Result has 218 places, 182 transitions, 1722 flow [2024-06-04 17:47:21,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1575, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1722, PETRI_PLACES=218, PETRI_TRANSITIONS=182} [2024-06-04 17:47:21,417 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 187 predicate places. [2024-06-04 17:47:21,417 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 182 transitions, 1722 flow [2024-06-04 17:47:21,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:47:21,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:47:21,417 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:47:21,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-04 17:47:21,418 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)] === [2024-06-04 17:47:21,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:47:21,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1080161196, now seen corresponding path program 4 times [2024-06-04 17:47:21,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:47:21,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667840523] [2024-06-04 17:47:21,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:47:21,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:47:21,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:47:27,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:47:27,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:47:27,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667840523] [2024-06-04 17:47:27,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667840523] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:47:27,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:47:27,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 17:47:27,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392119340] [2024-06-04 17:47:27,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:47:27,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 17:47:27,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:47:27,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 17:47:27,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 17:47:27,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:47:27,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 182 transitions, 1722 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) [2024-06-04 17:47:27,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:47:27,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:47:27,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:47:27,781 INFO L124 PetriNetUnfolderBase]: 461/828 cut-off events. [2024-06-04 17:47:27,781 INFO L125 PetriNetUnfolderBase]: For 62721/62721 co-relation queries the response was YES. [2024-06-04 17:47:27,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5019 conditions, 828 events. 461/828 cut-off events. For 62721/62721 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 3960 event pairs, 50 based on Foata normal form. 2/830 useless extension candidates. Maximal degree in co-relation 4913. Up to 432 conditions per place. [2024-06-04 17:47:27,789 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 121 selfloop transitions, 83 changer transitions 0/206 dead transitions. [2024-06-04 17:47:27,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 206 transitions, 2366 flow [2024-06-04 17:47:27,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 17:47:27,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 17:47:27,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-04 17:47:27,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-04 17:47:27,791 INFO L175 Difference]: Start difference. First operand has 218 places, 182 transitions, 1722 flow. Second operand 10 states and 126 transitions. [2024-06-04 17:47:27,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 206 transitions, 2366 flow [2024-06-04 17:47:27,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 206 transitions, 2230 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-04 17:47:27,948 INFO L231 Difference]: Finished difference. Result has 221 places, 184 transitions, 1787 flow [2024-06-04 17:47:27,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1586, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1787, PETRI_PLACES=221, PETRI_TRANSITIONS=184} [2024-06-04 17:47:27,949 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 190 predicate places. [2024-06-04 17:47:27,949 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 184 transitions, 1787 flow [2024-06-04 17:47:27,949 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) [2024-06-04 17:47:27,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:47:27,949 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:47:27,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-04 17:47:27,949 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)] === [2024-06-04 17:47:27,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:47:27,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1080167892, now seen corresponding path program 11 times [2024-06-04 17:47:27,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:47:27,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123026924] [2024-06-04 17:47:27,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:47:27,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:47:27,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:47:32,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:47:32,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:47:32,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123026924] [2024-06-04 17:47:32,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123026924] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:47:32,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:47:32,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 17:47:32,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416175699] [2024-06-04 17:47:32,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:47:32,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 17:47:32,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:47:32,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 17:47:32,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 17:47:32,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:47:32,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 184 transitions, 1787 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) [2024-06-04 17:47:32,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:47:32,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:47:32,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:47:33,276 INFO L124 PetriNetUnfolderBase]: 465/836 cut-off events. [2024-06-04 17:47:33,277 INFO L125 PetriNetUnfolderBase]: For 64519/64519 co-relation queries the response was YES. [2024-06-04 17:47:33,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5125 conditions, 836 events. 465/836 cut-off events. For 64519/64519 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 4010 event pairs, 62 based on Foata normal form. 2/838 useless extension candidates. Maximal degree in co-relation 5018. Up to 641 conditions per place. [2024-06-04 17:47:33,284 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 132 selfloop transitions, 68 changer transitions 0/202 dead transitions. [2024-06-04 17:47:33,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 202 transitions, 2236 flow [2024-06-04 17:47:33,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 17:47:33,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 17:47:33,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-04 17:47:33,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-04 17:47:33,287 INFO L175 Difference]: Start difference. First operand has 221 places, 184 transitions, 1787 flow. Second operand 10 states and 116 transitions. [2024-06-04 17:47:33,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 202 transitions, 2236 flow [2024-06-04 17:47:33,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 202 transitions, 2050 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-04 17:47:33,443 INFO L231 Difference]: Finished difference. Result has 223 places, 185 transitions, 1754 flow [2024-06-04 17:47:33,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1601, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1754, PETRI_PLACES=223, PETRI_TRANSITIONS=185} [2024-06-04 17:47:33,452 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 192 predicate places. [2024-06-04 17:47:33,452 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 185 transitions, 1754 flow [2024-06-04 17:47:33,453 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) [2024-06-04 17:47:33,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:47:33,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:47:33,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-04 17:47:33,453 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)] === [2024-06-04 17:47:33,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:47:33,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1080345522, now seen corresponding path program 12 times [2024-06-04 17:47:33,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:47:33,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443961053] [2024-06-04 17:47:33,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:47:33,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:47:33,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:47:37,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:47:37,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:47:37,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443961053] [2024-06-04 17:47:37,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443961053] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:47:37,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:47:37,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 17:47:37,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159998363] [2024-06-04 17:47:37,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:47:37,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 17:47:37,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:47:37,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 17:47:37,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 17:47:37,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:47:37,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 185 transitions, 1754 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) [2024-06-04 17:47:37,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:47:37,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:47:37,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:47:38,144 INFO L124 PetriNetUnfolderBase]: 469/844 cut-off events. [2024-06-04 17:47:38,144 INFO L125 PetriNetUnfolderBase]: For 65895/65895 co-relation queries the response was YES. [2024-06-04 17:47:38,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5109 conditions, 844 events. 469/844 cut-off events. For 65895/65895 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4060 event pairs, 38 based on Foata normal form. 2/846 useless extension candidates. Maximal degree in co-relation 5001. Up to 607 conditions per place. [2024-06-04 17:47:38,152 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 136 selfloop transitions, 70 changer transitions 0/208 dead transitions. [2024-06-04 17:47:38,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 208 transitions, 2389 flow [2024-06-04 17:47:38,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 17:47:38,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 17:47:38,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-04 17:47:38,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38125 [2024-06-04 17:47:38,160 INFO L175 Difference]: Start difference. First operand has 223 places, 185 transitions, 1754 flow. Second operand 10 states and 122 transitions. [2024-06-04 17:47:38,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 208 transitions, 2389 flow [2024-06-04 17:47:38,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 208 transitions, 2245 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-04 17:47:38,312 INFO L231 Difference]: Finished difference. Result has 225 places, 186 transitions, 1769 flow [2024-06-04 17:47:38,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1614, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1769, PETRI_PLACES=225, PETRI_TRANSITIONS=186} [2024-06-04 17:47:38,312 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 194 predicate places. [2024-06-04 17:47:38,312 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 186 transitions, 1769 flow [2024-06-04 17:47:38,312 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) [2024-06-04 17:47:38,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:47:38,313 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:47:38,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-04 17:47:38,313 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)] === [2024-06-04 17:47:38,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:47:38,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1080167706, now seen corresponding path program 5 times [2024-06-04 17:47:38,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:47:38,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777346557] [2024-06-04 17:47:38,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:47:38,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:47:38,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:47:43,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:47:43,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:47:43,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777346557] [2024-06-04 17:47:43,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777346557] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:47:43,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:47:43,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 17:47:43,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197756284] [2024-06-04 17:47:43,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:47:43,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 17:47:43,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:47:43,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 17:47:43,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-04 17:47:43,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:47:43,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 186 transitions, 1769 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) [2024-06-04 17:47:43,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:47:43,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:47:43,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:47:43,899 INFO L124 PetriNetUnfolderBase]: 475/854 cut-off events. [2024-06-04 17:47:43,899 INFO L125 PetriNetUnfolderBase]: For 66020/66020 co-relation queries the response was YES. [2024-06-04 17:47:43,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5173 conditions, 854 events. 475/854 cut-off events. For 66020/66020 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4129 event pairs, 50 based on Foata normal form. 2/856 useless extension candidates. Maximal degree in co-relation 5064. Up to 613 conditions per place. [2024-06-04 17:47:43,907 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 137 selfloop transitions, 71 changer transitions 0/210 dead transitions. [2024-06-04 17:47:43,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 210 transitions, 2265 flow [2024-06-04 17:47:43,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 17:47:43,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 17:47:43,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-04 17:47:43,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-04 17:47:43,908 INFO L175 Difference]: Start difference. First operand has 225 places, 186 transitions, 1769 flow. Second operand 10 states and 123 transitions. [2024-06-04 17:47:43,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 210 transitions, 2265 flow [2024-06-04 17:47:44,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 210 transitions, 2117 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-04 17:47:44,076 INFO L231 Difference]: Finished difference. Result has 226 places, 188 transitions, 1802 flow [2024-06-04 17:47:44,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1621, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1802, PETRI_PLACES=226, PETRI_TRANSITIONS=188} [2024-06-04 17:47:44,077 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 195 predicate places. [2024-06-04 17:47:44,077 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 188 transitions, 1802 flow [2024-06-04 17:47:44,077 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) [2024-06-04 17:47:44,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:47:44,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:47:44,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-04 17:47:44,077 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)] === [2024-06-04 17:47:44,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:47:44,078 INFO L85 PathProgramCache]: Analyzing trace with hash 23337844, now seen corresponding path program 13 times [2024-06-04 17:47:44,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:47:44,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457584592] [2024-06-04 17:47:44,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:47:44,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:47:44,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:47:48,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:47:48,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:47:48,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457584592] [2024-06-04 17:47:48,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457584592] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:47:48,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:47:48,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 17:47:48,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108288880] [2024-06-04 17:47:48,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:47:48,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 17:47:48,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:47:48,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 17:47:48,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-04 17:47:48,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:47:48,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 188 transitions, 1802 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:47:48,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:47:48,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:47:48,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:47:48,938 INFO L124 PetriNetUnfolderBase]: 479/862 cut-off events. [2024-06-04 17:47:48,938 INFO L125 PetriNetUnfolderBase]: For 67860/67860 co-relation queries the response was YES. [2024-06-04 17:47:48,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5239 conditions, 862 events. 479/862 cut-off events. For 67860/67860 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4182 event pairs, 62 based on Foata normal form. 2/864 useless extension candidates. Maximal degree in co-relation 5130. Up to 702 conditions per place. [2024-06-04 17:47:48,945 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 141 selfloop transitions, 65 changer transitions 0/208 dead transitions. [2024-06-04 17:47:48,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 208 transitions, 2269 flow [2024-06-04 17:47:48,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 17:47:48,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 17:47:48,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-04 17:47:48,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3819444444444444 [2024-06-04 17:47:48,947 INFO L175 Difference]: Start difference. First operand has 226 places, 188 transitions, 1802 flow. Second operand 9 states and 110 transitions. [2024-06-04 17:47:48,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 208 transitions, 2269 flow [2024-06-04 17:47:49,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 208 transitions, 2069 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-04 17:47:49,094 INFO L231 Difference]: Finished difference. Result has 227 places, 189 transitions, 1747 flow [2024-06-04 17:47:49,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1602, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1747, PETRI_PLACES=227, PETRI_TRANSITIONS=189} [2024-06-04 17:47:49,095 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 196 predicate places. [2024-06-04 17:47:49,095 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 189 transitions, 1747 flow [2024-06-04 17:47:49,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:47:49,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:47:49,095 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:47:49,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-04 17:47:49,096 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)] === [2024-06-04 17:47:49,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:47:49,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1080340686, now seen corresponding path program 6 times [2024-06-04 17:47:49,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:47:49,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468511122] [2024-06-04 17:47:49,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:47:49,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:47:49,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:47:54,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:47:54,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:47:54,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468511122] [2024-06-04 17:47:54,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468511122] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:47:54,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:47:54,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 17:47:54,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802356066] [2024-06-04 17:47:54,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:47:54,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 17:47:54,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:47:54,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 17:47:54,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-04 17:47:54,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:47:54,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 189 transitions, 1747 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) [2024-06-04 17:47:54,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:47:54,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:47:54,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:47:55,266 INFO L124 PetriNetUnfolderBase]: 485/872 cut-off events. [2024-06-04 17:47:55,266 INFO L125 PetriNetUnfolderBase]: For 69227/69227 co-relation queries the response was YES. [2024-06-04 17:47:55,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5236 conditions, 872 events. 485/872 cut-off events. For 69227/69227 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4251 event pairs, 50 based on Foata normal form. 2/874 useless extension candidates. Maximal degree in co-relation 5126. Up to 529 conditions per place. [2024-06-04 17:47:55,275 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 126 selfloop transitions, 89 changer transitions 0/217 dead transitions. [2024-06-04 17:47:55,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 217 transitions, 2435 flow [2024-06-04 17:47:55,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 17:47:55,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 17:47:55,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-04 17:47:55,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-04 17:47:55,276 INFO L175 Difference]: Start difference. First operand has 227 places, 189 transitions, 1747 flow. Second operand 10 states and 131 transitions. [2024-06-04 17:47:55,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 217 transitions, 2435 flow [2024-06-04 17:47:55,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 217 transitions, 2301 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-04 17:47:55,442 INFO L231 Difference]: Finished difference. Result has 230 places, 191 transitions, 1830 flow [2024-06-04 17:47:55,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1613, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1830, PETRI_PLACES=230, PETRI_TRANSITIONS=191} [2024-06-04 17:47:55,442 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 199 predicate places. [2024-06-04 17:47:55,442 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 191 transitions, 1830 flow [2024-06-04 17:47:55,443 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) [2024-06-04 17:47:55,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:47:55,443 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:47:55,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-04 17:47:55,443 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)] === [2024-06-04 17:47:55,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:47:55,443 INFO L85 PathProgramCache]: Analyzing trace with hash -913934112, now seen corresponding path program 14 times [2024-06-04 17:47:55,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:47:55,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61108378] [2024-06-04 17:47:55,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:47:55,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:47:55,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:48:00,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:48:00,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:48:00,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61108378] [2024-06-04 17:48:00,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61108378] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:48:00,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:48:00,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 17:48:00,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479728772] [2024-06-04 17:48:00,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:48:00,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 17:48:00,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:48:00,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 17:48:00,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 17:48:00,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:48:00,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 191 transitions, 1830 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) [2024-06-04 17:48:00,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:48:00,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:48:00,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:48:00,728 INFO L124 PetriNetUnfolderBase]: 489/880 cut-off events. [2024-06-04 17:48:00,729 INFO L125 PetriNetUnfolderBase]: For 71180/71180 co-relation queries the response was YES. [2024-06-04 17:48:00,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5374 conditions, 880 events. 489/880 cut-off events. For 71180/71180 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 4308 event pairs, 62 based on Foata normal form. 2/882 useless extension candidates. Maximal degree in co-relation 5263. Up to 691 conditions per place. [2024-06-04 17:48:00,736 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 137 selfloop transitions, 67 changer transitions 0/206 dead transitions. [2024-06-04 17:48:00,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 206 transitions, 2281 flow [2024-06-04 17:48:00,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 17:48:00,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 17:48:00,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-04 17:48:00,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-04 17:48:00,738 INFO L175 Difference]: Start difference. First operand has 230 places, 191 transitions, 1830 flow. Second operand 10 states and 111 transitions. [2024-06-04 17:48:00,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 206 transitions, 2281 flow [2024-06-04 17:48:00,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 206 transitions, 2057 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-04 17:48:00,903 INFO L231 Difference]: Finished difference. Result has 232 places, 192 transitions, 1757 flow [2024-06-04 17:48:00,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1606, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1757, PETRI_PLACES=232, PETRI_TRANSITIONS=192} [2024-06-04 17:48:00,904 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 201 predicate places. [2024-06-04 17:48:00,904 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 192 transitions, 1757 flow [2024-06-04 17:48:00,904 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) [2024-06-04 17:48:00,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:48:00,904 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:48:00,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-04 17:48:00,904 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)] === [2024-06-04 17:48:00,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:48:00,905 INFO L85 PathProgramCache]: Analyzing trace with hash -913933926, now seen corresponding path program 7 times [2024-06-04 17:48:00,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:48:00,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943017248] [2024-06-04 17:48:00,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:48:00,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:48:00,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:48:06,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:48:06,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:48:06,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943017248] [2024-06-04 17:48:06,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943017248] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:48:06,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:48:06,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 17:48:06,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106889873] [2024-06-04 17:48:06,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:48:06,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 17:48:06,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:48:06,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 17:48:06,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-04 17:48:06,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:48:06,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 192 transitions, 1757 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) [2024-06-04 17:48:06,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:48:06,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:48:06,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:48:06,798 INFO L124 PetriNetUnfolderBase]: 505/906 cut-off events. [2024-06-04 17:48:06,798 INFO L125 PetriNetUnfolderBase]: For 79451/79451 co-relation queries the response was YES. [2024-06-04 17:48:06,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5592 conditions, 906 events. 505/906 cut-off events. For 79451/79451 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 4446 event pairs, 53 based on Foata normal form. 2/908 useless extension candidates. Maximal degree in co-relation 5480. Up to 662 conditions per place. [2024-06-04 17:48:06,806 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 152 selfloop transitions, 63 changer transitions 0/217 dead transitions. [2024-06-04 17:48:06,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 217 transitions, 2461 flow [2024-06-04 17:48:06,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 17:48:06,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 17:48:06,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-04 17:48:06,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-04 17:48:06,808 INFO L175 Difference]: Start difference. First operand has 232 places, 192 transitions, 1757 flow. Second operand 10 states and 123 transitions. [2024-06-04 17:48:06,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 217 transitions, 2461 flow [2024-06-04 17:48:07,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 217 transitions, 2321 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-04 17:48:07,015 INFO L231 Difference]: Finished difference. Result has 234 places, 196 transitions, 1812 flow [2024-06-04 17:48:07,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1617, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1812, PETRI_PLACES=234, PETRI_TRANSITIONS=196} [2024-06-04 17:48:07,015 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 203 predicate places. [2024-06-04 17:48:07,016 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 196 transitions, 1812 flow [2024-06-04 17:48:07,016 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) [2024-06-04 17:48:07,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:48:07,016 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:48:07,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-04 17:48:07,016 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)] === [2024-06-04 17:48:07,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:48:07,017 INFO L85 PathProgramCache]: Analyzing trace with hash 189751300, now seen corresponding path program 8 times [2024-06-04 17:48:07,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:48:07,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669275824] [2024-06-04 17:48:07,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:48:07,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:48:07,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:48:12,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:48:12,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:48:12,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669275824] [2024-06-04 17:48:12,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669275824] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:48:12,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:48:12,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 17:48:12,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628274522] [2024-06-04 17:48:12,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:48:12,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 17:48:12,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:48:12,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 17:48:12,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-04 17:48:12,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:48:12,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 196 transitions, 1812 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) [2024-06-04 17:48:12,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:48:12,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:48:12,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:48:12,854 INFO L124 PetriNetUnfolderBase]: 501/900 cut-off events. [2024-06-04 17:48:12,855 INFO L125 PetriNetUnfolderBase]: For 74132/74132 co-relation queries the response was YES. [2024-06-04 17:48:12,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5438 conditions, 900 events. 501/900 cut-off events. For 74132/74132 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 4420 event pairs, 53 based on Foata normal form. 2/902 useless extension candidates. Maximal degree in co-relation 5325. Up to 668 conditions per place. [2024-06-04 17:48:12,863 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 153 selfloop transitions, 60 changer transitions 0/215 dead transitions. [2024-06-04 17:48:12,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 215 transitions, 2280 flow [2024-06-04 17:48:12,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 17:48:12,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 17:48:12,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-04 17:48:12,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.371875 [2024-06-04 17:48:12,864 INFO L175 Difference]: Start difference. First operand has 234 places, 196 transitions, 1812 flow. Second operand 10 states and 119 transitions. [2024-06-04 17:48:12,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 215 transitions, 2280 flow [2024-06-04 17:48:13,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 215 transitions, 2169 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-04 17:48:13,052 INFO L231 Difference]: Finished difference. Result has 238 places, 196 transitions, 1826 flow [2024-06-04 17:48:13,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1701, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1826, PETRI_PLACES=238, PETRI_TRANSITIONS=196} [2024-06-04 17:48:13,052 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 207 predicate places. [2024-06-04 17:48:13,052 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 196 transitions, 1826 flow [2024-06-04 17:48:13,053 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) [2024-06-04 17:48:13,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:48:13,053 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:48:13,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-04 17:48:13,053 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)] === [2024-06-04 17:48:13,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:48:13,053 INFO L85 PathProgramCache]: Analyzing trace with hash 196007410, now seen corresponding path program 9 times [2024-06-04 17:48:13,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:48:13,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796216449] [2024-06-04 17:48:13,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:48:13,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:48:13,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:48:18,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:48:18,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:48:18,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796216449] [2024-06-04 17:48:18,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796216449] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:48:18,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:48:18,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 17:48:18,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41131346] [2024-06-04 17:48:18,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:48:18,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 17:48:18,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:48:18,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 17:48:18,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-04 17:48:18,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:48:18,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 196 transitions, 1826 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) [2024-06-04 17:48:18,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:48:18,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:48:18,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:48:19,242 INFO L124 PetriNetUnfolderBase]: 507/910 cut-off events. [2024-06-04 17:48:19,242 INFO L125 PetriNetUnfolderBase]: For 75724/75724 co-relation queries the response was YES. [2024-06-04 17:48:19,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5591 conditions, 910 events. 507/910 cut-off events. For 75724/75724 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 4469 event pairs, 53 based on Foata normal form. 2/912 useless extension candidates. Maximal degree in co-relation 5476. Up to 678 conditions per place. [2024-06-04 17:48:19,250 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 154 selfloop transitions, 61 changer transitions 0/217 dead transitions. [2024-06-04 17:48:19,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 217 transitions, 2332 flow [2024-06-04 17:48:19,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 17:48:19,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 17:48:19,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-04 17:48:19,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36875 [2024-06-04 17:48:19,251 INFO L175 Difference]: Start difference. First operand has 238 places, 196 transitions, 1826 flow. Second operand 10 states and 118 transitions. [2024-06-04 17:48:19,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 217 transitions, 2332 flow [2024-06-04 17:48:19,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 217 transitions, 2207 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-04 17:48:19,444 INFO L231 Difference]: Finished difference. Result has 239 places, 198 transitions, 1866 flow [2024-06-04 17:48:19,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1701, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1866, PETRI_PLACES=239, PETRI_TRANSITIONS=198} [2024-06-04 17:48:19,445 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 208 predicate places. [2024-06-04 17:48:19,445 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 198 transitions, 1866 flow [2024-06-04 17:48:19,445 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) [2024-06-04 17:48:19,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:48:19,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:48:19,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-04 17:48:19,445 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)] === [2024-06-04 17:48:19,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:48:19,446 INFO L85 PathProgramCache]: Analyzing trace with hash 196238050, now seen corresponding path program 10 times [2024-06-04 17:48:19,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:48:19,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219360543] [2024-06-04 17:48:19,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:48:19,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:48:19,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:48:24,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:48:24,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:48:24,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219360543] [2024-06-04 17:48:24,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219360543] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:48:24,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:48:24,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 17:48:24,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552936048] [2024-06-04 17:48:24,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:48:24,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 17:48:24,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:48:24,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 17:48:24,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-04 17:48:24,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:48:24,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 198 transitions, 1866 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) [2024-06-04 17:48:24,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:48:24,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:48:24,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:48:25,284 INFO L124 PetriNetUnfolderBase]: 513/920 cut-off events. [2024-06-04 17:48:25,285 INFO L125 PetriNetUnfolderBase]: For 77769/77769 co-relation queries the response was YES. [2024-06-04 17:48:25,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5687 conditions, 920 events. 513/920 cut-off events. For 77769/77769 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 4525 event pairs, 54 based on Foata normal form. 2/922 useless extension candidates. Maximal degree in co-relation 5571. Up to 688 conditions per place. [2024-06-04 17:48:25,292 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 153 selfloop transitions, 63 changer transitions 0/218 dead transitions. [2024-06-04 17:48:25,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 218 transitions, 2376 flow [2024-06-04 17:48:25,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 17:48:25,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 17:48:25,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-04 17:48:25,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-04 17:48:25,293 INFO L175 Difference]: Start difference. First operand has 239 places, 198 transitions, 1866 flow. Second operand 10 states and 116 transitions. [2024-06-04 17:48:25,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 218 transitions, 2376 flow [2024-06-04 17:48:25,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 218 transitions, 2233 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-04 17:48:25,453 INFO L231 Difference]: Finished difference. Result has 241 places, 200 transitions, 1896 flow [2024-06-04 17:48:25,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1723, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1896, PETRI_PLACES=241, PETRI_TRANSITIONS=200} [2024-06-04 17:48:25,454 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 210 predicate places. [2024-06-04 17:48:25,454 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 200 transitions, 1896 flow [2024-06-04 17:48:25,454 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) [2024-06-04 17:48:25,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:48:25,454 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:48:25,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-04 17:48:25,454 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)] === [2024-06-04 17:48:25,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:48:25,455 INFO L85 PathProgramCache]: Analyzing trace with hash 196246978, now seen corresponding path program 1 times [2024-06-04 17:48:25,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:48:25,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213604416] [2024-06-04 17:48:25,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:48:25,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:48:25,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:48:30,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:48:30,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:48:30,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213604416] [2024-06-04 17:48:30,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213604416] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:48:30,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:48:30,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 17:48:30,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002000186] [2024-06-04 17:48:30,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:48:30,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 17:48:30,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:48:30,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 17:48:30,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 17:48:30,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:48:30,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 200 transitions, 1896 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) [2024-06-04 17:48:30,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:48:30,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:48:30,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:48:31,145 INFO L124 PetriNetUnfolderBase]: 521/936 cut-off events. [2024-06-04 17:48:31,146 INFO L125 PetriNetUnfolderBase]: For 87862/87862 co-relation queries the response was YES. [2024-06-04 17:48:31,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5827 conditions, 936 events. 521/936 cut-off events. For 87862/87862 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 4667 event pairs, 54 based on Foata normal form. 4/940 useless extension candidates. Maximal degree in co-relation 5710. Up to 700 conditions per place. [2024-06-04 17:48:31,153 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 159 selfloop transitions, 58 changer transitions 0/219 dead transitions. [2024-06-04 17:48:31,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 219 transitions, 2420 flow [2024-06-04 17:48:31,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 17:48:31,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 17:48:31,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-04 17:48:31,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-04 17:48:31,155 INFO L175 Difference]: Start difference. First operand has 241 places, 200 transitions, 1896 flow. Second operand 10 states and 116 transitions. [2024-06-04 17:48:31,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 219 transitions, 2420 flow [2024-06-04 17:48:31,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 219 transitions, 2285 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-04 17:48:31,350 INFO L231 Difference]: Finished difference. Result has 244 places, 202 transitions, 1938 flow [2024-06-04 17:48:31,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1761, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1938, PETRI_PLACES=244, PETRI_TRANSITIONS=202} [2024-06-04 17:48:31,351 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 213 predicate places. [2024-06-04 17:48:31,351 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 202 transitions, 1938 flow [2024-06-04 17:48:31,351 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) [2024-06-04 17:48:31,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:48:31,351 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:48:31,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-04 17:48:31,351 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)] === [2024-06-04 17:48:31,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:48:31,352 INFO L85 PathProgramCache]: Analyzing trace with hash 196000900, now seen corresponding path program 11 times [2024-06-04 17:48:31,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:48:31,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689086182] [2024-06-04 17:48:31,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:48:31,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:48:31,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:48:35,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:48:35,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:48:35,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689086182] [2024-06-04 17:48:35,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689086182] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:48:35,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:48:35,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 17:48:35,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025003527] [2024-06-04 17:48:35,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:48:35,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 17:48:35,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:48:35,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 17:48:35,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-04 17:48:36,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:48:36,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 202 transitions, 1938 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) [2024-06-04 17:48:36,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:48:36,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:48:36,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:48:36,590 INFO L124 PetriNetUnfolderBase]: 527/946 cut-off events. [2024-06-04 17:48:36,590 INFO L125 PetriNetUnfolderBase]: For 82097/82097 co-relation queries the response was YES. [2024-06-04 17:48:36,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5904 conditions, 946 events. 527/946 cut-off events. For 82097/82097 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 4721 event pairs, 53 based on Foata normal form. 2/948 useless extension candidates. Maximal degree in co-relation 5786. Up to 697 conditions per place. [2024-06-04 17:48:36,597 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 155 selfloop transitions, 66 changer transitions 0/223 dead transitions. [2024-06-04 17:48:36,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 223 transitions, 2464 flow [2024-06-04 17:48:36,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 17:48:36,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 17:48:36,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-04 17:48:36,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.371875 [2024-06-04 17:48:36,599 INFO L175 Difference]: Start difference. First operand has 244 places, 202 transitions, 1938 flow. Second operand 10 states and 119 transitions. [2024-06-04 17:48:36,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 223 transitions, 2464 flow [2024-06-04 17:48:36,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 223 transitions, 2301 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-04 17:48:36,778 INFO L231 Difference]: Finished difference. Result has 246 places, 204 transitions, 1958 flow [2024-06-04 17:48:36,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1775, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1958, PETRI_PLACES=246, PETRI_TRANSITIONS=204} [2024-06-04 17:48:36,778 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 215 predicate places. [2024-06-04 17:48:36,779 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 204 transitions, 1958 flow [2024-06-04 17:48:36,779 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) [2024-06-04 17:48:36,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:48:36,779 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:48:36,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-04 17:48:36,779 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)] === [2024-06-04 17:48:36,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:48:36,780 INFO L85 PathProgramCache]: Analyzing trace with hash -907678002, now seen corresponding path program 15 times [2024-06-04 17:48:36,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:48:36,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258661223] [2024-06-04 17:48:36,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:48:36,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:48:36,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:48:40,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:48:40,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:48:40,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258661223] [2024-06-04 17:48:40,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258661223] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:48:40,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:48:40,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 17:48:40,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957768886] [2024-06-04 17:48:40,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:48:40,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 17:48:40,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:48:40,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 17:48:40,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-04 17:48:41,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:48:41,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 204 transitions, 1958 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) [2024-06-04 17:48:41,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:48:41,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:48:41,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:48:41,505 INFO L124 PetriNetUnfolderBase]: 531/954 cut-off events. [2024-06-04 17:48:41,505 INFO L125 PetriNetUnfolderBase]: For 83448/83448 co-relation queries the response was YES. [2024-06-04 17:48:41,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5900 conditions, 954 events. 531/954 cut-off events. For 83448/83448 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 4768 event pairs, 70 based on Foata normal form. 2/956 useless extension candidates. Maximal degree in co-relation 5781. Up to 837 conditions per place. [2024-06-04 17:48:41,514 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 175 selfloop transitions, 42 changer transitions 0/219 dead transitions. [2024-06-04 17:48:41,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 219 transitions, 2437 flow [2024-06-04 17:48:41,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 17:48:41,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 17:48:41,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-04 17:48:41,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3375 [2024-06-04 17:48:41,516 INFO L175 Difference]: Start difference. First operand has 246 places, 204 transitions, 1958 flow. Second operand 10 states and 108 transitions. [2024-06-04 17:48:41,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 219 transitions, 2437 flow [2024-06-04 17:48:41,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 219 transitions, 2276 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-04 17:48:41,704 INFO L231 Difference]: Finished difference. Result has 248 places, 205 transitions, 1900 flow [2024-06-04 17:48:41,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1797, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1900, PETRI_PLACES=248, PETRI_TRANSITIONS=205} [2024-06-04 17:48:41,705 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 217 predicate places. [2024-06-04 17:48:41,705 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 205 transitions, 1900 flow [2024-06-04 17:48:41,705 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) [2024-06-04 17:48:41,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:48:41,705 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:48:41,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-04 17:48:41,706 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)] === [2024-06-04 17:48:41,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:48:41,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1226165502, now seen corresponding path program 2 times [2024-06-04 17:48:41,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:48:41,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578138093] [2024-06-04 17:48:41,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:48:41,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:48:41,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:48:47,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:48:47,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:48:47,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578138093] [2024-06-04 17:48:47,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578138093] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:48:47,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:48:47,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 17:48:47,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387747725] [2024-06-04 17:48:47,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:48:47,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 17:48:47,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:48:47,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 17:48:47,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 17:48:47,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:48:47,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 205 transitions, 1900 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) [2024-06-04 17:48:47,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:48:47,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:48:47,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:48:47,868 INFO L124 PetriNetUnfolderBase]: 538/967 cut-off events. [2024-06-04 17:48:47,868 INFO L125 PetriNetUnfolderBase]: For 85144/85144 co-relation queries the response was YES. [2024-06-04 17:48:47,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5897 conditions, 967 events. 538/967 cut-off events. For 85144/85144 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 4871 event pairs, 59 based on Foata normal form. 2/969 useless extension candidates. Maximal degree in co-relation 5777. Up to 910 conditions per place. [2024-06-04 17:48:47,876 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 197 selfloop transitions, 24 changer transitions 0/223 dead transitions. [2024-06-04 17:48:47,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 223 transitions, 2421 flow [2024-06-04 17:48:47,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 17:48:47,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 17:48:47,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 103 transitions. [2024-06-04 17:48:47,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.321875 [2024-06-04 17:48:47,878 INFO L175 Difference]: Start difference. First operand has 248 places, 205 transitions, 1900 flow. Second operand 10 states and 103 transitions. [2024-06-04 17:48:47,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 223 transitions, 2421 flow [2024-06-04 17:48:48,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 223 transitions, 2329 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-04 17:48:48,086 INFO L231 Difference]: Finished difference. Result has 252 places, 210 transitions, 1934 flow [2024-06-04 17:48:48,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1808, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1934, PETRI_PLACES=252, PETRI_TRANSITIONS=210} [2024-06-04 17:48:48,087 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 221 predicate places. [2024-06-04 17:48:48,087 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 210 transitions, 1934 flow [2024-06-04 17:48:48,087 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) [2024-06-04 17:48:48,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:48:48,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:48:48,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-04 17:48:48,087 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)] === [2024-06-04 17:48:48,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:48:48,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1990455934, now seen corresponding path program 12 times [2024-06-04 17:48:48,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:48:48,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961143923] [2024-06-04 17:48:48,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:48:48,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:48:48,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:48:53,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:48:53,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:48:53,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961143923] [2024-06-04 17:48:53,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961143923] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:48:53,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:48:53,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 17:48:53,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065812229] [2024-06-04 17:48:53,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:48:53,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 17:48:53,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:48:53,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 17:48:53,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 17:48:53,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:48:53,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 210 transitions, 1934 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) [2024-06-04 17:48:53,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:48:53,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:48:53,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:48:54,069 INFO L124 PetriNetUnfolderBase]: 544/977 cut-off events. [2024-06-04 17:48:54,069 INFO L125 PetriNetUnfolderBase]: For 87299/87299 co-relation queries the response was YES. [2024-06-04 17:48:54,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6044 conditions, 977 events. 544/977 cut-off events. For 87299/87299 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 4896 event pairs, 65 based on Foata normal form. 2/979 useless extension candidates. Maximal degree in co-relation 5921. Up to 904 conditions per place. [2024-06-04 17:48:54,079 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 194 selfloop transitions, 29 changer transitions 0/225 dead transitions. [2024-06-04 17:48:54,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 225 transitions, 2460 flow [2024-06-04 17:48:54,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 17:48:54,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 17:48:54,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-04 17:48:54,080 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33125 [2024-06-04 17:48:54,080 INFO L175 Difference]: Start difference. First operand has 252 places, 210 transitions, 1934 flow. Second operand 10 states and 106 transitions. [2024-06-04 17:48:54,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 225 transitions, 2460 flow [2024-06-04 17:48:54,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 225 transitions, 2411 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-04 17:48:54,263 INFO L231 Difference]: Finished difference. Result has 257 places, 212 transitions, 1998 flow [2024-06-04 17:48:54,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1885, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1998, PETRI_PLACES=257, PETRI_TRANSITIONS=212} [2024-06-04 17:48:54,263 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 226 predicate places. [2024-06-04 17:48:54,264 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 212 transitions, 1998 flow [2024-06-04 17:48:54,264 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) [2024-06-04 17:48:54,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:48:54,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:48:54,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-04 17:48:54,264 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)] === [2024-06-04 17:48:54,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:48:54,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1195838556, now seen corresponding path program 3 times [2024-06-04 17:48:54,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:48:54,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615048146] [2024-06-04 17:48:54,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:48:54,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:48:54,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:48:59,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:48:59,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:48:59,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615048146] [2024-06-04 17:48:59,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615048146] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:48:59,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:48:59,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 17:48:59,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053514616] [2024-06-04 17:48:59,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:48:59,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 17:48:59,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:48:59,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 17:48:59,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-04 17:48:59,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:48:59,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 212 transitions, 1998 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) [2024-06-04 17:48:59,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:48:59,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:48:59,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:48:59,928 INFO L124 PetriNetUnfolderBase]: 548/985 cut-off events. [2024-06-04 17:48:59,928 INFO L125 PetriNetUnfolderBase]: For 89192/89192 co-relation queries the response was YES. [2024-06-04 17:48:59,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6124 conditions, 985 events. 548/985 cut-off events. For 89192/89192 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 4977 event pairs, 61 based on Foata normal form. 2/987 useless extension candidates. Maximal degree in co-relation 6000. Up to 910 conditions per place. [2024-06-04 17:48:59,937 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 194 selfloop transitions, 30 changer transitions 0/226 dead transitions. [2024-06-04 17:48:59,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 226 transitions, 2506 flow [2024-06-04 17:48:59,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 17:48:59,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 17:48:59,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-04 17:48:59,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.328125 [2024-06-04 17:48:59,939 INFO L175 Difference]: Start difference. First operand has 257 places, 212 transitions, 1998 flow. Second operand 10 states and 105 transitions. [2024-06-04 17:48:59,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 226 transitions, 2506 flow [2024-06-04 17:49:00,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 226 transitions, 2415 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-04 17:49:00,128 INFO L231 Difference]: Finished difference. Result has 259 places, 213 transitions, 2001 flow [2024-06-04 17:49:00,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1907, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2001, PETRI_PLACES=259, PETRI_TRANSITIONS=213} [2024-06-04 17:49:00,129 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 228 predicate places. [2024-06-04 17:49:00,129 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 213 transitions, 2001 flow [2024-06-04 17:49:00,129 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) [2024-06-04 17:49:00,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:49:00,129 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:49:00,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-04 17:49:00,130 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)] === [2024-06-04 17:49:00,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:49:00,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1637145950, now seen corresponding path program 4 times [2024-06-04 17:49:00,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:49:00,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160806029] [2024-06-04 17:49:00,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:49:00,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:49:00,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:49:05,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:49:05,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:49:05,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160806029] [2024-06-04 17:49:05,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160806029] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:49:05,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:49:05,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 17:49:05,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243848059] [2024-06-04 17:49:05,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:49:05,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 17:49:05,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:49:05,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 17:49:05,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 17:49:05,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:49:05,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 213 transitions, 2001 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) [2024-06-04 17:49:05,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:49:05,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:49:05,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:49:05,756 INFO L124 PetriNetUnfolderBase]: 552/993 cut-off events. [2024-06-04 17:49:05,756 INFO L125 PetriNetUnfolderBase]: For 91225/91225 co-relation queries the response was YES. [2024-06-04 17:49:05,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6181 conditions, 993 events. 552/993 cut-off events. For 91225/91225 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 4996 event pairs, 67 based on Foata normal form. 2/995 useless extension candidates. Maximal degree in co-relation 6056. Up to 952 conditions per place. [2024-06-04 17:49:05,766 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 206 selfloop transitions, 18 changer transitions 0/226 dead transitions. [2024-06-04 17:49:05,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 226 transitions, 2507 flow [2024-06-04 17:49:05,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 17:49:05,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 17:49:05,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 98 transitions. [2024-06-04 17:49:05,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30625 [2024-06-04 17:49:05,768 INFO L175 Difference]: Start difference. First operand has 259 places, 213 transitions, 2001 flow. Second operand 10 states and 98 transitions. [2024-06-04 17:49:05,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 226 transitions, 2507 flow [2024-06-04 17:49:06,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 226 transitions, 2423 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-04 17:49:06,003 INFO L231 Difference]: Finished difference. Result has 261 places, 214 transitions, 1990 flow [2024-06-04 17:49:06,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1917, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1990, PETRI_PLACES=261, PETRI_TRANSITIONS=214} [2024-06-04 17:49:06,003 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 230 predicate places. [2024-06-04 17:49:06,003 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 214 transitions, 1990 flow [2024-06-04 17:49:06,003 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) [2024-06-04 17:49:06,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:49:06,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:49:06,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-04 17:49:06,004 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)] === [2024-06-04 17:49:06,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:49:06,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1637137022, now seen corresponding path program 13 times [2024-06-04 17:49:06,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:49:06,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235296754] [2024-06-04 17:49:06,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:49:06,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:49:06,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:49:10,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:49:10,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:49:10,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235296754] [2024-06-04 17:49:10,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235296754] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:49:10,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:49:10,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 17:49:10,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554734747] [2024-06-04 17:49:10,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:49:10,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 17:49:10,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:49:10,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 17:49:10,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 17:49:10,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:49:10,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 214 transitions, 1990 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) [2024-06-04 17:49:10,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:49:10,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:49:10,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:49:11,230 INFO L124 PetriNetUnfolderBase]: 558/1003 cut-off events. [2024-06-04 17:49:11,230 INFO L125 PetriNetUnfolderBase]: For 93087/93087 co-relation queries the response was YES. [2024-06-04 17:49:11,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6214 conditions, 1003 events. 558/1003 cut-off events. For 93087/93087 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 5090 event pairs, 66 based on Foata normal form. 2/1005 useless extension candidates. Maximal degree in co-relation 6088. Up to 952 conditions per place. [2024-06-04 17:49:11,239 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 207 selfloop transitions, 20 changer transitions 0/229 dead transitions. [2024-06-04 17:49:11,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 229 transitions, 2528 flow [2024-06-04 17:49:11,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 17:49:11,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 17:49:11,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 101 transitions. [2024-06-04 17:49:11,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.315625 [2024-06-04 17:49:11,240 INFO L175 Difference]: Start difference. First operand has 261 places, 214 transitions, 1990 flow. Second operand 10 states and 101 transitions. [2024-06-04 17:49:11,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 229 transitions, 2528 flow [2024-06-04 17:49:11,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 229 transitions, 2467 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-04 17:49:11,486 INFO L231 Difference]: Finished difference. Result has 263 places, 216 transitions, 2028 flow [2024-06-04 17:49:11,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1929, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2028, PETRI_PLACES=263, PETRI_TRANSITIONS=216} [2024-06-04 17:49:11,486 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 232 predicate places. [2024-06-04 17:49:11,486 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 216 transitions, 2028 flow [2024-06-04 17:49:11,486 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) [2024-06-04 17:49:11,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:49:11,487 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:49:11,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-04 17:49:11,487 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)] === [2024-06-04 17:49:11,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:49:11,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1864823852, now seen corresponding path program 14 times [2024-06-04 17:49:11,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:49:11,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628293199] [2024-06-04 17:49:11,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:49:11,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:49:11,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:49:17,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:49:17,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:49:17,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628293199] [2024-06-04 17:49:17,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628293199] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:49:17,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:49:17,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 17:49:17,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097213367] [2024-06-04 17:49:17,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:49:17,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 17:49:17,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:49:17,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 17:49:17,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 17:49:17,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:49:17,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 216 transitions, 2028 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) [2024-06-04 17:49:17,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:49:17,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:49:17,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:49:17,792 INFO L124 PetriNetUnfolderBase]: 564/1013 cut-off events. [2024-06-04 17:49:17,792 INFO L125 PetriNetUnfolderBase]: For 95116/95116 co-relation queries the response was YES. [2024-06-04 17:49:17,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6292 conditions, 1013 events. 564/1013 cut-off events. For 95116/95116 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 5172 event pairs, 64 based on Foata normal form. 2/1015 useless extension candidates. Maximal degree in co-relation 6165. Up to 936 conditions per place. [2024-06-04 17:49:17,802 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 202 selfloop transitions, 28 changer transitions 0/232 dead transitions. [2024-06-04 17:49:17,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 232 transitions, 2580 flow [2024-06-04 17:49:17,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 17:49:17,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 17:49:17,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-04 17:49:17,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.328125 [2024-06-04 17:49:17,803 INFO L175 Difference]: Start difference. First operand has 263 places, 216 transitions, 2028 flow. Second operand 10 states and 105 transitions. [2024-06-04 17:49:17,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 232 transitions, 2580 flow [2024-06-04 17:49:18,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 232 transitions, 2503 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-04 17:49:18,024 INFO L231 Difference]: Finished difference. Result has 265 places, 218 transitions, 2070 flow [2024-06-04 17:49:18,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1951, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2070, PETRI_PLACES=265, PETRI_TRANSITIONS=218} [2024-06-04 17:49:18,024 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 234 predicate places. [2024-06-04 17:49:18,024 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 218 transitions, 2070 flow [2024-06-04 17:49:18,025 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) [2024-06-04 17:49:18,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:49:18,025 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:49:18,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-04 17:49:18,025 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)] === [2024-06-04 17:49:18,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:49:18,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1232661180, now seen corresponding path program 15 times [2024-06-04 17:49:18,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:49:18,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177035535] [2024-06-04 17:49:18,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:49:18,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:49:18,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:49:23,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:49:23,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:49:23,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177035535] [2024-06-04 17:49:23,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177035535] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:49:23,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:49:23,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 17:49:23,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543275829] [2024-06-04 17:49:23,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:49:23,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 17:49:23,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:49:23,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 17:49:23,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 17:49:23,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:49:23,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 218 transitions, 2070 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) [2024-06-04 17:49:23,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:49:23,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:49:23,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:49:24,400 INFO L124 PetriNetUnfolderBase]: 570/1023 cut-off events. [2024-06-04 17:49:24,401 INFO L125 PetriNetUnfolderBase]: For 97270/97270 co-relation queries the response was YES. [2024-06-04 17:49:24,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6392 conditions, 1023 events. 570/1023 cut-off events. For 97270/97270 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 5225 event pairs, 71 based on Foata normal form. 2/1025 useless extension candidates. Maximal degree in co-relation 6264. Up to 950 conditions per place. [2024-06-04 17:49:24,410 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 204 selfloop transitions, 28 changer transitions 0/234 dead transitions. [2024-06-04 17:49:24,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 234 transitions, 2630 flow [2024-06-04 17:49:24,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 17:49:24,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 17:49:24,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-04 17:49:24,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3375 [2024-06-04 17:49:24,411 INFO L175 Difference]: Start difference. First operand has 265 places, 218 transitions, 2070 flow. Second operand 10 states and 108 transitions. [2024-06-04 17:49:24,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 234 transitions, 2630 flow [2024-06-04 17:49:24,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 234 transitions, 2533 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-04 17:49:24,657 INFO L231 Difference]: Finished difference. Result has 267 places, 220 transitions, 2096 flow [2024-06-04 17:49:24,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1973, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2096, PETRI_PLACES=267, PETRI_TRANSITIONS=220} [2024-06-04 17:49:24,658 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 236 predicate places. [2024-06-04 17:49:24,658 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 220 transitions, 2096 flow [2024-06-04 17:49:24,658 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) [2024-06-04 17:49:24,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:49:24,658 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:49:24,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-04 17:49:24,659 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)] === [2024-06-04 17:49:24,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:49:24,659 INFO L85 PathProgramCache]: Analyzing trace with hash 751302998, now seen corresponding path program 5 times [2024-06-04 17:49:24,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:49:24,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136036503] [2024-06-04 17:49:24,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:49:24,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:49:24,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:49:29,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:49:29,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:49:29,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136036503] [2024-06-04 17:49:29,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136036503] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:49:29,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:49:29,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 17:49:29,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39244507] [2024-06-04 17:49:29,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:49:29,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 17:49:29,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:49:29,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 17:49:29,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-04 17:49:29,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:49:29,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 220 transitions, 2096 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) [2024-06-04 17:49:29,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:49:29,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:49:29,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:49:30,341 INFO L124 PetriNetUnfolderBase]: 574/1031 cut-off events. [2024-06-04 17:49:30,342 INFO L125 PetriNetUnfolderBase]: For 99485/99485 co-relation queries the response was YES. [2024-06-04 17:49:30,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6442 conditions, 1031 events. 574/1031 cut-off events. For 99485/99485 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 5259 event pairs, 71 based on Foata normal form. 2/1033 useless extension candidates. Maximal degree in co-relation 6313. Up to 993 conditions per place. [2024-06-04 17:49:30,351 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 216 selfloop transitions, 15 changer transitions 0/233 dead transitions. [2024-06-04 17:49:30,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 233 transitions, 2616 flow [2024-06-04 17:49:30,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 17:49:30,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 17:49:30,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 96 transitions. [2024-06-04 17:49:30,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3 [2024-06-04 17:49:30,352 INFO L175 Difference]: Start difference. First operand has 267 places, 220 transitions, 2096 flow. Second operand 10 states and 96 transitions. [2024-06-04 17:49:30,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 233 transitions, 2616 flow [2024-06-04 17:49:30,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 233 transitions, 2515 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-04 17:49:30,600 INFO L231 Difference]: Finished difference. Result has 269 places, 221 transitions, 2063 flow [2024-06-04 17:49:30,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1995, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2063, PETRI_PLACES=269, PETRI_TRANSITIONS=221} [2024-06-04 17:49:30,600 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 238 predicate places. [2024-06-04 17:49:30,600 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 221 transitions, 2063 flow [2024-06-04 17:49:30,601 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) [2024-06-04 17:49:30,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:49:30,601 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:49:30,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-04 17:49:30,601 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)] === [2024-06-04 17:49:30,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:49:30,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1983962674, now seen corresponding path program 16 times [2024-06-04 17:49:30,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:49:30,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645624979] [2024-06-04 17:49:30,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:49:30,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:49:30,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:49:35,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:49:35,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:49:35,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645624979] [2024-06-04 17:49:35,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645624979] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:49:35,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:49:35,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 17:49:35,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707927381] [2024-06-04 17:49:35,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:49:35,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 17:49:35,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:49:35,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 17:49:35,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-04 17:49:35,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:49:35,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 221 transitions, 2063 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) [2024-06-04 17:49:35,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:49:35,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:49:35,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:49:36,213 INFO L124 PetriNetUnfolderBase]: 583/1046 cut-off events. [2024-06-04 17:49:36,214 INFO L125 PetriNetUnfolderBase]: For 101829/101829 co-relation queries the response was YES. [2024-06-04 17:49:36,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6509 conditions, 1046 events. 583/1046 cut-off events. For 101829/101829 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 5387 event pairs, 61 based on Foata normal form. 2/1048 useless extension candidates. Maximal degree in co-relation 6379. Up to 924 conditions per place. [2024-06-04 17:49:36,224 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 195 selfloop transitions, 43 changer transitions 0/240 dead transitions. [2024-06-04 17:49:36,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 240 transitions, 2662 flow [2024-06-04 17:49:36,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 17:49:36,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 17:49:36,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-04 17:49:36,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-04 17:49:36,225 INFO L175 Difference]: Start difference. First operand has 269 places, 221 transitions, 2063 flow. Second operand 10 states and 111 transitions. [2024-06-04 17:49:36,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 240 transitions, 2662 flow [2024-06-04 17:49:36,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 240 transitions, 2604 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-04 17:49:36,481 INFO L231 Difference]: Finished difference. Result has 272 places, 225 transitions, 2205 flow [2024-06-04 17:49:36,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2005, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2205, PETRI_PLACES=272, PETRI_TRANSITIONS=225} [2024-06-04 17:49:36,481 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 241 predicate places. [2024-06-04 17:49:36,481 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 225 transitions, 2205 flow [2024-06-04 17:49:36,481 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) [2024-06-04 17:49:36,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:49:36,482 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:49:36,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-04 17:49:36,482 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)] === [2024-06-04 17:49:36,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:49:36,482 INFO L85 PathProgramCache]: Analyzing trace with hash -819354102, now seen corresponding path program 16 times [2024-06-04 17:49:36,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:49:36,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712815386] [2024-06-04 17:49:36,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:49:36,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:49:36,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:49:40,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:49:40,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:49:40,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712815386] [2024-06-04 17:49:40,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712815386] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:49:40,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:49:40,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 17:49:40,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909541464] [2024-06-04 17:49:40,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:49:40,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 17:49:40,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:49:40,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 17:49:40,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-04 17:49:40,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:49:40,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 225 transitions, 2205 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) [2024-06-04 17:49:40,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:49:40,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:49:40,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:49:41,219 INFO L124 PetriNetUnfolderBase]: 587/1054 cut-off events. [2024-06-04 17:49:41,220 INFO L125 PetriNetUnfolderBase]: For 103800/103800 co-relation queries the response was YES. [2024-06-04 17:49:41,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6644 conditions, 1054 events. 587/1054 cut-off events. For 103800/103800 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 5417 event pairs, 75 based on Foata normal form. 2/1056 useless extension candidates. Maximal degree in co-relation 6512. Up to 1012 conditions per place. [2024-06-04 17:49:41,232 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 214 selfloop transitions, 21 changer transitions 0/237 dead transitions. [2024-06-04 17:49:41,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 237 transitions, 2714 flow [2024-06-04 17:49:41,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 17:49:41,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 17:49:41,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 100 transitions. [2024-06-04 17:49:41,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-06-04 17:49:41,233 INFO L175 Difference]: Start difference. First operand has 272 places, 225 transitions, 2205 flow. Second operand 10 states and 100 transitions. [2024-06-04 17:49:41,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 237 transitions, 2714 flow [2024-06-04 17:49:41,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 237 transitions, 2599 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-04 17:49:41,536 INFO L231 Difference]: Finished difference. Result has 275 places, 226 transitions, 2153 flow [2024-06-04 17:49:41,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2090, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2153, PETRI_PLACES=275, PETRI_TRANSITIONS=226} [2024-06-04 17:49:41,564 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 244 predicate places. [2024-06-04 17:49:41,564 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 226 transitions, 2153 flow [2024-06-04 17:49:41,564 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) [2024-06-04 17:49:41,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:49:41,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:49:41,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-04 17:49:41,565 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)] === [2024-06-04 17:49:41,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:49:41,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1226411580, now seen corresponding path program 17 times [2024-06-04 17:49:41,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:49:41,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625380332] [2024-06-04 17:49:41,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:49:41,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:49:41,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:49:46,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:49:46,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:49:46,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625380332] [2024-06-04 17:49:46,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625380332] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:49:46,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:49:46,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 17:49:46,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808816188] [2024-06-04 17:49:46,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:49:46,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 17:49:46,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:49:46,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 17:49:46,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-04 17:49:46,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:49:46,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 226 transitions, 2153 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) [2024-06-04 17:49:46,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:49:46,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:49:46,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:49:46,855 INFO L124 PetriNetUnfolderBase]: 603/1080 cut-off events. [2024-06-04 17:49:46,855 INFO L125 PetriNetUnfolderBase]: For 116497/116497 co-relation queries the response was YES. [2024-06-04 17:49:46,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7029 conditions, 1080 events. 603/1080 cut-off events. For 116497/116497 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 5581 event pairs, 71 based on Foata normal form. 2/1082 useless extension candidates. Maximal degree in co-relation 6896. Up to 987 conditions per place. [2024-06-04 17:49:46,865 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 210 selfloop transitions, 33 changer transitions 0/245 dead transitions. [2024-06-04 17:49:46,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 245 transitions, 3013 flow [2024-06-04 17:49:46,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 17:49:46,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 17:49:46,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-04 17:49:46,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-04 17:49:46,880 INFO L175 Difference]: Start difference. First operand has 275 places, 226 transitions, 2153 flow. Second operand 10 states and 110 transitions. [2024-06-04 17:49:46,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 245 transitions, 3013 flow [2024-06-04 17:49:47,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 245 transitions, 2961 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-04 17:49:47,214 INFO L231 Difference]: Finished difference. Result has 277 places, 230 transitions, 2308 flow [2024-06-04 17:49:47,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2101, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2308, PETRI_PLACES=277, PETRI_TRANSITIONS=230} [2024-06-04 17:49:47,214 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 246 predicate places. [2024-06-04 17:49:47,214 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 230 transitions, 2308 flow [2024-06-04 17:49:47,215 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) [2024-06-04 17:49:47,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:49:47,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:49:47,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-04 17:49:47,215 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)] === [2024-06-04 17:49:47,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:49:47,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1226405070, now seen corresponding path program 18 times [2024-06-04 17:49:47,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:49:47,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778486415] [2024-06-04 17:49:47,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:49:47,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:49:47,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:49:52,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:49:52,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:49:52,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778486415] [2024-06-04 17:49:52,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778486415] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:49:52,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:49:52,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 17:49:52,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704468781] [2024-06-04 17:49:52,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:49:52,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 17:49:52,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:49:52,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 17:49:52,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 17:49:52,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:49:52,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 230 transitions, 2308 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) [2024-06-04 17:49:52,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:49:52,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:49:52,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:49:52,761 INFO L124 PetriNetUnfolderBase]: 599/1074 cut-off events. [2024-06-04 17:49:52,761 INFO L125 PetriNetUnfolderBase]: For 108462/108462 co-relation queries the response was YES. [2024-06-04 17:49:52,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6819 conditions, 1074 events. 599/1074 cut-off events. For 108462/108462 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 5552 event pairs, 69 based on Foata normal form. 2/1076 useless extension candidates. Maximal degree in co-relation 6685. Up to 1001 conditions per place. [2024-06-04 17:49:52,771 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 214 selfloop transitions, 28 changer transitions 0/244 dead transitions. [2024-06-04 17:49:52,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 244 transitions, 2830 flow [2024-06-04 17:49:52,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 17:49:52,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 17:49:52,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-04 17:49:52,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3375 [2024-06-04 17:49:52,772 INFO L175 Difference]: Start difference. First operand has 277 places, 230 transitions, 2308 flow. Second operand 10 states and 108 transitions. [2024-06-04 17:49:52,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 244 transitions, 2830 flow [2024-06-04 17:49:53,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 244 transitions, 2691 flow, removed 53 selfloop flow, removed 6 redundant places. [2024-06-04 17:49:53,079 INFO L231 Difference]: Finished difference. Result has 281 places, 230 transitions, 2230 flow [2024-06-04 17:49:53,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2169, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2230, PETRI_PLACES=281, PETRI_TRANSITIONS=230} [2024-06-04 17:49:53,080 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 250 predicate places. [2024-06-04 17:49:53,080 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 230 transitions, 2230 flow [2024-06-04 17:49:53,080 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) [2024-06-04 17:49:53,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:49:53,080 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:49:53,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-04 17:49:53,081 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)] === [2024-06-04 17:49:53,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:49:53,081 INFO L85 PathProgramCache]: Analyzing trace with hash 742714820, now seen corresponding path program 19 times [2024-06-04 17:49:53,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:49:53,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472718426] [2024-06-04 17:49:53,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:49:53,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:49:53,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:49:57,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:49:57,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:49:57,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472718426] [2024-06-04 17:49:57,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472718426] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:49:57,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:49:57,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 17:49:57,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964936484] [2024-06-04 17:49:57,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:49:57,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 17:49:57,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:49:57,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 17:49:57,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 17:49:57,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:49:57,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 230 transitions, 2230 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) [2024-06-04 17:49:57,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:49:57,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:49:57,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:49:58,188 INFO L124 PetriNetUnfolderBase]: 605/1084 cut-off events. [2024-06-04 17:49:58,188 INFO L125 PetriNetUnfolderBase]: For 109835/109835 co-relation queries the response was YES. [2024-06-04 17:49:58,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6858 conditions, 1084 events. 605/1084 cut-off events. For 109835/109835 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 5618 event pairs, 67 based on Foata normal form. 2/1086 useless extension candidates. Maximal degree in co-relation 6722. Up to 976 conditions per place. [2024-06-04 17:49:58,199 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 208 selfloop transitions, 37 changer transitions 0/247 dead transitions. [2024-06-04 17:49:58,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 247 transitions, 3036 flow [2024-06-04 17:49:58,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 17:49:58,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 17:49:58,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-04 17:49:58,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.334375 [2024-06-04 17:49:58,200 INFO L175 Difference]: Start difference. First operand has 281 places, 230 transitions, 2230 flow. Second operand 10 states and 107 transitions. [2024-06-04 17:49:58,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 247 transitions, 3036 flow [2024-06-04 17:49:58,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 247 transitions, 2968 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-04 17:49:58,504 INFO L231 Difference]: Finished difference. Result has 282 places, 232 transitions, 2311 flow [2024-06-04 17:49:58,504 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2162, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2311, PETRI_PLACES=282, PETRI_TRANSITIONS=232} [2024-06-04 17:49:58,505 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 251 predicate places. [2024-06-04 17:49:58,505 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 232 transitions, 2311 flow [2024-06-04 17:49:58,505 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) [2024-06-04 17:49:58,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:49:58,505 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:49:58,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-04 17:49:58,505 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)] === [2024-06-04 17:49:58,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:49:58,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1226411766, now seen corresponding path program 17 times [2024-06-04 17:49:58,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:49:58,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394323873] [2024-06-04 17:49:58,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:49:58,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:49:58,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:50:02,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:50:02,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:50:02,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394323873] [2024-06-04 17:50:02,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394323873] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:50:02,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:50:02,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 17:50:02,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339502443] [2024-06-04 17:50:02,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:50:02,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 17:50:02,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:50:02,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 17:50:02,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-04 17:50:02,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:50:02,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 232 transitions, 2311 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) [2024-06-04 17:50:02,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:50:02,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:50:02,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:50:03,074 INFO L124 PetriNetUnfolderBase]: 609/1092 cut-off events. [2024-06-04 17:50:03,074 INFO L125 PetriNetUnfolderBase]: For 112113/112113 co-relation queries the response was YES. [2024-06-04 17:50:03,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6940 conditions, 1092 events. 609/1092 cut-off events. For 112113/112113 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 5689 event pairs, 79 based on Foata normal form. 2/1094 useless extension candidates. Maximal degree in co-relation 6803. Up to 1050 conditions per place. [2024-06-04 17:50:03,085 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 221 selfloop transitions, 21 changer transitions 0/244 dead transitions. [2024-06-04 17:50:03,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 244 transitions, 2836 flow [2024-06-04 17:50:03,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 17:50:03,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 17:50:03,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 100 transitions. [2024-06-04 17:50:03,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-06-04 17:50:03,086 INFO L175 Difference]: Start difference. First operand has 282 places, 232 transitions, 2311 flow. Second operand 10 states and 100 transitions. [2024-06-04 17:50:03,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 244 transitions, 2836 flow [2024-06-04 17:50:03,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 244 transitions, 2499 flow, removed 34 selfloop flow, removed 11 redundant places. [2024-06-04 17:50:03,408 INFO L231 Difference]: Finished difference. Result has 281 places, 233 transitions, 2039 flow [2024-06-04 17:50:03,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1974, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2039, PETRI_PLACES=281, PETRI_TRANSITIONS=233} [2024-06-04 17:50:03,409 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 250 predicate places. [2024-06-04 17:50:03,409 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 233 transitions, 2039 flow [2024-06-04 17:50:03,409 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) [2024-06-04 17:50:03,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:50:03,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:50:03,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-04 17:50:03,409 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)] === [2024-06-04 17:50:03,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:50:03,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1004766726, now seen corresponding path program 18 times [2024-06-04 17:50:03,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:50:03,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115430574] [2024-06-04 17:50:03,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:50:03,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:50:03,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:50:07,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:50:07,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:50:07,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115430574] [2024-06-04 17:50:07,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115430574] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:50:07,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:50:07,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 17:50:07,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99539900] [2024-06-04 17:50:07,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:50:07,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 17:50:07,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:50:07,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 17:50:07,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 17:50:07,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:50:07,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 233 transitions, 2039 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) [2024-06-04 17:50:07,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:50:07,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:50:07,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:50:08,449 INFO L124 PetriNetUnfolderBase]: 606/1087 cut-off events. [2024-06-04 17:50:08,450 INFO L125 PetriNetUnfolderBase]: For 101900/101900 co-relation queries the response was YES. [2024-06-04 17:50:08,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6304 conditions, 1087 events. 606/1087 cut-off events. For 101900/101900 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 5660 event pairs, 77 based on Foata normal form. 2/1089 useless extension candidates. Maximal degree in co-relation 6168. Up to 1054 conditions per place. [2024-06-04 17:50:08,458 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 226 selfloop transitions, 16 changer transitions 0/244 dead transitions. [2024-06-04 17:50:08,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 244 transitions, 2547 flow [2024-06-04 17:50:08,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 17:50:08,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 17:50:08,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 97 transitions. [2024-06-04 17:50:08,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.303125 [2024-06-04 17:50:08,460 INFO L175 Difference]: Start difference. First operand has 281 places, 233 transitions, 2039 flow. Second operand 10 states and 97 transitions. [2024-06-04 17:50:08,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 244 transitions, 2547 flow [2024-06-04 17:50:08,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 244 transitions, 2489 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-04 17:50:08,742 INFO L231 Difference]: Finished difference. Result has 283 places, 233 transitions, 2017 flow [2024-06-04 17:50:08,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1981, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2017, PETRI_PLACES=283, PETRI_TRANSITIONS=233} [2024-06-04 17:50:08,742 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 252 predicate places. [2024-06-04 17:50:08,742 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 233 transitions, 2017 flow [2024-06-04 17:50:08,743 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) [2024-06-04 17:50:08,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:50:08,743 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:50:08,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-04 17:50:08,743 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)] === [2024-06-04 17:50:08,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:50:08,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1864584284, now seen corresponding path program 6 times [2024-06-04 17:50:08,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:50:08,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302844576] [2024-06-04 17:50:08,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:50:08,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:50:08,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:50:13,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:50:13,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:50:13,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302844576] [2024-06-04 17:50:13,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302844576] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:50:13,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:50:13,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 17:50:13,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93316724] [2024-06-04 17:50:13,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:50:13,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 17:50:13,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:50:13,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 17:50:13,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-04 17:50:13,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:50:13,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 233 transitions, 2017 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) [2024-06-04 17:50:13,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:50:13,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:50:13,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:50:14,251 INFO L124 PetriNetUnfolderBase]: 603/1082 cut-off events. [2024-06-04 17:50:14,251 INFO L125 PetriNetUnfolderBase]: For 92365/92365 co-relation queries the response was YES. [2024-06-04 17:50:14,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6027 conditions, 1082 events. 603/1082 cut-off events. For 92365/92365 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 5623 event pairs, 71 based on Foata normal form. 2/1084 useless extension candidates. Maximal degree in co-relation 5890. Up to 1034 conditions per place. [2024-06-04 17:50:14,261 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 223 selfloop transitions, 21 changer transitions 0/246 dead transitions. [2024-06-04 17:50:14,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 246 transitions, 2537 flow [2024-06-04 17:50:14,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 17:50:14,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 17:50:14,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 101 transitions. [2024-06-04 17:50:14,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.315625 [2024-06-04 17:50:14,263 INFO L175 Difference]: Start difference. First operand has 283 places, 233 transitions, 2017 flow. Second operand 10 states and 101 transitions. [2024-06-04 17:50:14,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 246 transitions, 2537 flow [2024-06-04 17:50:14,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 246 transitions, 2433 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-04 17:50:14,527 INFO L231 Difference]: Finished difference. Result has 284 places, 233 transitions, 1959 flow [2024-06-04 17:50:14,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1913, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1959, PETRI_PLACES=284, PETRI_TRANSITIONS=233} [2024-06-04 17:50:14,527 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 253 predicate places. [2024-06-04 17:50:14,528 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 233 transitions, 1959 flow [2024-06-04 17:50:14,528 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) [2024-06-04 17:50:14,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:50:14,528 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:50:14,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-04 17:50:14,528 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)] === [2024-06-04 17:50:14,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:50:14,529 INFO L85 PathProgramCache]: Analyzing trace with hash -2082866322, now seen corresponding path program 20 times [2024-06-04 17:50:14,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:50:14,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580018606] [2024-06-04 17:50:14,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:50:14,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:50:14,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:50:19,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:50:19,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:50:19,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580018606] [2024-06-04 17:50:19,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580018606] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:50:19,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:50:19,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 17:50:19,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125489126] [2024-06-04 17:50:19,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:50:19,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 17:50:19,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:50:19,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 17:50:19,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 17:50:19,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:50:19,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 233 transitions, 1959 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) [2024-06-04 17:50:19,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:50:19,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:50:19,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:50:19,758 INFO L124 PetriNetUnfolderBase]: 599/1076 cut-off events. [2024-06-04 17:50:19,758 INFO L125 PetriNetUnfolderBase]: For 82563/82563 co-relation queries the response was YES. [2024-06-04 17:50:19,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5707 conditions, 1076 events. 599/1076 cut-off events. For 82563/82563 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 5609 event pairs, 67 based on Foata normal form. 2/1078 useless extension candidates. Maximal degree in co-relation 5569. Up to 998 conditions per place. [2024-06-04 17:50:19,772 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 217 selfloop transitions, 28 changer transitions 0/247 dead transitions. [2024-06-04 17:50:19,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 247 transitions, 2487 flow [2024-06-04 17:50:19,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 17:50:19,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 17:50:19,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-04 17:50:19,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33125 [2024-06-04 17:50:19,773 INFO L175 Difference]: Start difference. First operand has 284 places, 233 transitions, 1959 flow. Second operand 10 states and 106 transitions. [2024-06-04 17:50:19,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 247 transitions, 2487 flow [2024-06-04 17:50:20,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 247 transitions, 2358 flow, removed 37 selfloop flow, removed 9 redundant places. [2024-06-04 17:50:20,026 INFO L231 Difference]: Finished difference. Result has 285 places, 233 transitions, 1891 flow [2024-06-04 17:50:20,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1830, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1891, PETRI_PLACES=285, PETRI_TRANSITIONS=233} [2024-06-04 17:50:20,027 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 254 predicate places. [2024-06-04 17:50:20,027 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 233 transitions, 1891 flow [2024-06-04 17:50:20,027 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) [2024-06-04 17:50:20,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:50:20,027 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:50:20,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-04 17:50:20,027 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)] === [2024-06-04 17:50:20,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:50:20,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1445799716, now seen corresponding path program 1 times [2024-06-04 17:50:20,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:50:20,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529253364] [2024-06-04 17:50:20,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:50:20,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:50:20,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:50:25,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:50:25,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:50:25,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529253364] [2024-06-04 17:50:25,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529253364] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:50:25,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:50:25,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 17:50:25,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028977340] [2024-06-04 17:50:25,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:50:25,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 17:50:25,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:50:25,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 17:50:25,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-04 17:50:25,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:50:25,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 233 transitions, 1891 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:50:25,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:50:25,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:50:25,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:50:26,331 INFO L124 PetriNetUnfolderBase]: 633/1150 cut-off events. [2024-06-04 17:50:26,332 INFO L125 PetriNetUnfolderBase]: For 163308/163308 co-relation queries the response was YES. [2024-06-04 17:50:26,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6716 conditions, 1150 events. 633/1150 cut-off events. For 163308/163308 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 6028 event pairs, 91 based on Foata normal form. 8/1158 useless extension candidates. Maximal degree in co-relation 6578. Up to 570 conditions per place. [2024-06-04 17:50:26,344 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 149 selfloop transitions, 90 changer transitions 18/259 dead transitions. [2024-06-04 17:50:26,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 259 transitions, 2717 flow [2024-06-04 17:50:26,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 17:50:26,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 17:50:26,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-04 17:50:26,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.365625 [2024-06-04 17:50:26,345 INFO L175 Difference]: Start difference. First operand has 285 places, 233 transitions, 1891 flow. Second operand 10 states and 117 transitions. [2024-06-04 17:50:26,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 259 transitions, 2717 flow [2024-06-04 17:50:26,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 259 transitions, 2598 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-04 17:50:26,771 INFO L231 Difference]: Finished difference. Result has 285 places, 229 transitions, 1934 flow [2024-06-04 17:50:26,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1772, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1934, PETRI_PLACES=285, PETRI_TRANSITIONS=229} [2024-06-04 17:50:26,772 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 254 predicate places. [2024-06-04 17:50:26,772 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 229 transitions, 1934 flow [2024-06-04 17:50:26,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:50:26,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:50:26,772 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:50:26,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-04 17:50:26,772 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)] === [2024-06-04 17:50:26,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:50:26,773 INFO L85 PathProgramCache]: Analyzing trace with hash 358641154, now seen corresponding path program 2 times [2024-06-04 17:50:26,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:50:26,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262698561] [2024-06-04 17:50:26,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:50:26,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:50:26,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:50:31,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:50:31,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:50:31,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262698561] [2024-06-04 17:50:31,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262698561] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:50:31,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:50:31,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 17:50:31,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149593811] [2024-06-04 17:50:31,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:50:31,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 17:50:31,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:50:31,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 17:50:31,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 17:50:31,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:50:31,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 229 transitions, 1934 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:50:31,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:50:31,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:50:31,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:50:31,809 INFO L124 PetriNetUnfolderBase]: 646/1181 cut-off events. [2024-06-04 17:50:31,809 INFO L125 PetriNetUnfolderBase]: For 225810/225810 co-relation queries the response was YES. [2024-06-04 17:50:31,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7944 conditions, 1181 events. 646/1181 cut-off events. For 225810/225810 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 6189 event pairs, 98 based on Foata normal form. 8/1189 useless extension candidates. Maximal degree in co-relation 7806. Up to 589 conditions per place. [2024-06-04 17:50:31,821 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 137 selfloop transitions, 104 changer transitions 13/256 dead transitions. [2024-06-04 17:50:31,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 256 transitions, 2740 flow [2024-06-04 17:50:31,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 17:50:31,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 17:50:31,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-04 17:50:31,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-04 17:50:31,822 INFO L175 Difference]: Start difference. First operand has 285 places, 229 transitions, 1934 flow. Second operand 10 states and 131 transitions. [2024-06-04 17:50:31,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 256 transitions, 2740 flow [2024-06-04 17:50:32,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 256 transitions, 2625 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-04 17:50:32,344 INFO L231 Difference]: Finished difference. Result has 280 places, 226 transitions, 2020 flow [2024-06-04 17:50:32,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1827, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2020, PETRI_PLACES=280, PETRI_TRANSITIONS=226} [2024-06-04 17:50:32,344 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 249 predicate places. [2024-06-04 17:50:32,344 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 226 transitions, 2020 flow [2024-06-04 17:50:32,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:50:32,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:50:32,345 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:50:32,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-04 17:50:32,345 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)] === [2024-06-04 17:50:32,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:50:32,345 INFO L85 PathProgramCache]: Analyzing trace with hash 213087132, now seen corresponding path program 3 times [2024-06-04 17:50:32,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:50:32,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309726928] [2024-06-04 17:50:32,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:50:32,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:50:32,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:50:36,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:50:36,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:50:36,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309726928] [2024-06-04 17:50:36,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309726928] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:50:36,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:50:36,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 17:50:36,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173497978] [2024-06-04 17:50:36,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:50:36,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 17:50:36,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:50:36,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 17:50:36,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-04 17:50:36,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:50:36,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 226 transitions, 2020 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:50:36,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:50:36,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:50:36,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:50:37,507 INFO L124 PetriNetUnfolderBase]: 636/1163 cut-off events. [2024-06-04 17:50:37,507 INFO L125 PetriNetUnfolderBase]: For 213768/213768 co-relation queries the response was YES. [2024-06-04 17:50:37,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8048 conditions, 1163 events. 636/1163 cut-off events. For 213768/213768 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 6079 event pairs, 94 based on Foata normal form. 8/1171 useless extension candidates. Maximal degree in co-relation 7913. Up to 589 conditions per place. [2024-06-04 17:50:37,524 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 135 selfloop transitions, 105 changer transitions 10/252 dead transitions. [2024-06-04 17:50:37,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 252 transitions, 2810 flow [2024-06-04 17:50:37,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 17:50:37,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 17:50:37,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-04 17:50:37,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-04 17:50:37,525 INFO L175 Difference]: Start difference. First operand has 280 places, 226 transitions, 2020 flow. Second operand 10 states and 130 transitions. [2024-06-04 17:50:37,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 252 transitions, 2810 flow [2024-06-04 17:50:38,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 252 transitions, 2586 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-04 17:50:38,211 INFO L231 Difference]: Finished difference. Result has 276 places, 224 transitions, 2000 flow [2024-06-04 17:50:38,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1800, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2000, PETRI_PLACES=276, PETRI_TRANSITIONS=224} [2024-06-04 17:50:38,212 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 245 predicate places. [2024-06-04 17:50:38,212 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 224 transitions, 2000 flow [2024-06-04 17:50:38,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:50:38,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:50:38,212 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:50:38,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-04 17:50:38,213 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)] === [2024-06-04 17:50:38,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:50:38,213 INFO L85 PathProgramCache]: Analyzing trace with hash 358790884, now seen corresponding path program 4 times [2024-06-04 17:50:38,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:50:38,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089447029] [2024-06-04 17:50:38,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:50:38,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:50:38,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:50:42,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:50:42,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:50:42,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089447029] [2024-06-04 17:50:42,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089447029] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:50:42,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:50:42,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 17:50:42,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361807822] [2024-06-04 17:50:42,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:50:42,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 17:50:42,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:50:42,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 17:50:42,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-04 17:50:43,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:50:43,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 224 transitions, 2000 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:50:43,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:50:43,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:50:43,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:50:43,424 INFO L124 PetriNetUnfolderBase]: 605/1102 cut-off events. [2024-06-04 17:50:43,424 INFO L125 PetriNetUnfolderBase]: For 165629/165629 co-relation queries the response was YES. [2024-06-04 17:50:43,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6805 conditions, 1102 events. 605/1102 cut-off events. For 165629/165629 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 5710 event pairs, 87 based on Foata normal form. 10/1112 useless extension candidates. Maximal degree in co-relation 6671. Up to 589 conditions per place. [2024-06-04 17:50:43,435 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 129 selfloop transitions, 101 changer transitions 13/245 dead transitions. [2024-06-04 17:50:43,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 245 transitions, 2548 flow [2024-06-04 17:50:43,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 17:50:43,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 17:50:43,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-04 17:50:43,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-04 17:50:43,436 INFO L175 Difference]: Start difference. First operand has 276 places, 224 transitions, 2000 flow. Second operand 10 states and 126 transitions. [2024-06-04 17:50:43,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 245 transitions, 2548 flow [2024-06-04 17:50:43,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 245 transitions, 2334 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-04 17:50:43,906 INFO L231 Difference]: Finished difference. Result has 274 places, 218 transitions, 1954 flow [2024-06-04 17:50:43,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1786, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1954, PETRI_PLACES=274, PETRI_TRANSITIONS=218} [2024-06-04 17:50:43,907 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 243 predicate places. [2024-06-04 17:50:43,907 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 218 transitions, 1954 flow [2024-06-04 17:50:43,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:50:43,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:50:43,907 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:50:43,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-04 17:50:43,908 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)] === [2024-06-04 17:50:43,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:50:43,908 INFO L85 PathProgramCache]: Analyzing trace with hash 355066234, now seen corresponding path program 5 times [2024-06-04 17:50:43,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:50:43,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317883304] [2024-06-04 17:50:43,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:50:43,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:50:43,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:50:48,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:50:48,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:50:48,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317883304] [2024-06-04 17:50:48,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317883304] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:50:48,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:50:48,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 17:50:48,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798017182] [2024-06-04 17:50:48,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:50:48,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 17:50:48,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:50:48,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 17:50:48,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 17:50:48,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:50:48,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 218 transitions, 1954 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:50:48,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:50:48,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:50:48,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:50:49,128 INFO L124 PetriNetUnfolderBase]: 618/1133 cut-off events. [2024-06-04 17:50:49,128 INFO L125 PetriNetUnfolderBase]: For 205766/205766 co-relation queries the response was YES. [2024-06-04 17:50:49,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7870 conditions, 1133 events. 618/1133 cut-off events. For 205766/205766 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 5892 event pairs, 94 based on Foata normal form. 8/1141 useless extension candidates. Maximal degree in co-relation 7737. Up to 493 conditions per place. [2024-06-04 17:50:49,143 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 132 selfloop transitions, 91 changer transitions 20/245 dead transitions. [2024-06-04 17:50:49,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 245 transitions, 2726 flow [2024-06-04 17:50:49,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 17:50:49,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 17:50:49,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-04 17:50:49,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-04 17:50:49,144 INFO L175 Difference]: Start difference. First operand has 274 places, 218 transitions, 1954 flow. Second operand 10 states and 127 transitions. [2024-06-04 17:50:49,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 245 transitions, 2726 flow [2024-06-04 17:50:49,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 245 transitions, 2495 flow, removed 2 selfloop flow, removed 15 redundant places. [2024-06-04 17:50:49,753 INFO L231 Difference]: Finished difference. Result has 269 places, 210 transitions, 1858 flow [2024-06-04 17:50:49,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1725, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1858, PETRI_PLACES=269, PETRI_TRANSITIONS=210} [2024-06-04 17:50:49,754 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 238 predicate places. [2024-06-04 17:50:49,754 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 210 transitions, 1858 flow [2024-06-04 17:50:49,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:50:49,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:50:49,754 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:50:49,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-04 17:50:49,754 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)] === [2024-06-04 17:50:49,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:50:49,755 INFO L85 PathProgramCache]: Analyzing trace with hash -2085633286, now seen corresponding path program 6 times [2024-06-04 17:50:49,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:50:49,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714403318] [2024-06-04 17:50:49,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:50:49,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:50:49,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:50:54,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:50:54,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:50:54,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714403318] [2024-06-04 17:50:54,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714403318] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:50:54,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:50:54,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 17:50:54,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872958501] [2024-06-04 17:50:54,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:50:54,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 17:50:54,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:50:54,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 17:50:54,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 17:50:54,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:50:54,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 210 transitions, 1858 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) [2024-06-04 17:50:54,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:50:54,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:50:54,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:50:55,145 INFO L124 PetriNetUnfolderBase]: 600/1099 cut-off events. [2024-06-04 17:50:55,145 INFO L125 PetriNetUnfolderBase]: For 216492/216492 co-relation queries the response was YES. [2024-06-04 17:50:55,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7686 conditions, 1099 events. 600/1099 cut-off events. For 216492/216492 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 5668 event pairs, 86 based on Foata normal form. 10/1109 useless extension candidates. Maximal degree in co-relation 7555. Up to 821 conditions per place. [2024-06-04 17:50:55,158 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 158 selfloop transitions, 58 changer transitions 14/232 dead transitions. [2024-06-04 17:50:55,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 232 transitions, 2382 flow [2024-06-04 17:50:55,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 17:50:55,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 17:50:55,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-04 17:50:55,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35511363636363635 [2024-06-04 17:50:55,159 INFO L175 Difference]: Start difference. First operand has 269 places, 210 transitions, 1858 flow. Second operand 11 states and 125 transitions. [2024-06-04 17:50:55,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 232 transitions, 2382 flow [2024-06-04 17:50:55,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 232 transitions, 2186 flow, removed 7 selfloop flow, removed 13 redundant places. [2024-06-04 17:50:55,543 INFO L231 Difference]: Finished difference. Result has 258 places, 207 transitions, 1761 flow [2024-06-04 17:50:55,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1662, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1761, PETRI_PLACES=258, PETRI_TRANSITIONS=207} [2024-06-04 17:50:55,543 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 227 predicate places. [2024-06-04 17:50:55,543 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 207 transitions, 1761 flow [2024-06-04 17:50:55,543 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) [2024-06-04 17:50:55,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:50:55,544 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:50:55,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-04 17:50:55,544 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)] === [2024-06-04 17:50:55,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:50:55,544 INFO L85 PathProgramCache]: Analyzing trace with hash 747276724, now seen corresponding path program 7 times [2024-06-04 17:50:55,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:50:55,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698629044] [2024-06-04 17:50:55,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:50:55,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:50:55,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:51:00,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:51:00,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:51:00,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698629044] [2024-06-04 17:51:00,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698629044] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:51:00,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:51:00,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 17:51:00,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386620035] [2024-06-04 17:51:00,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:51:00,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 17:51:00,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:51:00,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 17:51:00,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-04 17:51:00,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:51:00,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 207 transitions, 1761 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) [2024-06-04 17:51:00,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:51:00,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:51:00,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:51:01,035 INFO L124 PetriNetUnfolderBase]: 561/1026 cut-off events. [2024-06-04 17:51:01,035 INFO L125 PetriNetUnfolderBase]: For 144144/144144 co-relation queries the response was YES. [2024-06-04 17:51:01,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6232 conditions, 1026 events. 561/1026 cut-off events. For 144144/144144 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 5222 event pairs, 67 based on Foata normal form. 10/1036 useless extension candidates. Maximal degree in co-relation 6107. Up to 747 conditions per place. [2024-06-04 17:51:01,045 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 155 selfloop transitions, 58 changer transitions 14/229 dead transitions. [2024-06-04 17:51:01,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 229 transitions, 2279 flow [2024-06-04 17:51:01,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 17:51:01,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 17:51:01,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-04 17:51:01,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35511363636363635 [2024-06-04 17:51:01,046 INFO L175 Difference]: Start difference. First operand has 258 places, 207 transitions, 1761 flow. Second operand 11 states and 125 transitions. [2024-06-04 17:51:01,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 229 transitions, 2279 flow [2024-06-04 17:51:01,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 229 transitions, 2159 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-04 17:51:01,348 INFO L231 Difference]: Finished difference. Result has 256 places, 204 transitions, 1742 flow [2024-06-04 17:51:01,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1641, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1742, PETRI_PLACES=256, PETRI_TRANSITIONS=204} [2024-06-04 17:51:01,348 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 225 predicate places. [2024-06-04 17:51:01,348 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 204 transitions, 1742 flow [2024-06-04 17:51:01,348 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) [2024-06-04 17:51:01,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:51:01,348 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:51:01,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-04 17:51:01,349 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)] === [2024-06-04 17:51:01,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:51:01,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1386313780, now seen corresponding path program 8 times [2024-06-04 17:51:01,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:51:01,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663323599] [2024-06-04 17:51:01,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:51:01,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:51:01,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:51:07,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:51:07,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:51:07,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663323599] [2024-06-04 17:51:07,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663323599] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:51:07,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:51:07,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 17:51:07,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064916523] [2024-06-04 17:51:07,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:51:07,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 17:51:07,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:51:07,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 17:51:07,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 17:51:07,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:51:07,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 204 transitions, 1742 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) [2024-06-04 17:51:07,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:51:07,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:51:07,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:51:07,733 INFO L124 PetriNetUnfolderBase]: 549/1006 cut-off events. [2024-06-04 17:51:07,734 INFO L125 PetriNetUnfolderBase]: For 131920/131920 co-relation queries the response was YES. [2024-06-04 17:51:07,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6137 conditions, 1006 events. 549/1006 cut-off events. For 131920/131920 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 5100 event pairs, 79 based on Foata normal form. 8/1014 useless extension candidates. Maximal degree in co-relation 6013. Up to 531 conditions per place. [2024-06-04 17:51:07,742 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 122 selfloop transitions, 90 changer transitions 13/227 dead transitions. [2024-06-04 17:51:07,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 227 transitions, 2254 flow [2024-06-04 17:51:07,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 17:51:07,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 17:51:07,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-04 17:51:07,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3721590909090909 [2024-06-04 17:51:07,743 INFO L175 Difference]: Start difference. First operand has 256 places, 204 transitions, 1742 flow. Second operand 11 states and 131 transitions. [2024-06-04 17:51:07,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 227 transitions, 2254 flow [2024-06-04 17:51:07,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 227 transitions, 2134 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-04 17:51:07,994 INFO L231 Difference]: Finished difference. Result has 254 places, 201 transitions, 1786 flow [2024-06-04 17:51:07,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1622, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1786, PETRI_PLACES=254, PETRI_TRANSITIONS=201} [2024-06-04 17:51:07,994 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 223 predicate places. [2024-06-04 17:51:07,994 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 201 transitions, 1786 flow [2024-06-04 17:51:07,995 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) [2024-06-04 17:51:07,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:51:07,995 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:51:07,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-04 17:51:07,995 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)] === [2024-06-04 17:51:07,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:51:07,995 INFO L85 PathProgramCache]: Analyzing trace with hash -2091347206, now seen corresponding path program 9 times [2024-06-04 17:51:07,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:51:07,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158189724] [2024-06-04 17:51:07,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:51:07,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:51:08,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:51:12,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:51:12,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:51:12,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158189724] [2024-06-04 17:51:12,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158189724] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:51:12,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:51:12,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 17:51:12,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565407915] [2024-06-04 17:51:12,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:51:12,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 17:51:12,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:51:12,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 17:51:12,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 17:51:12,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:51:12,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 201 transitions, 1786 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:51:12,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:51:12,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:51:12,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:51:13,171 INFO L124 PetriNetUnfolderBase]: 571/1052 cut-off events. [2024-06-04 17:51:13,171 INFO L125 PetriNetUnfolderBase]: For 175264/175264 co-relation queries the response was YES. [2024-06-04 17:51:13,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7266 conditions, 1052 events. 571/1052 cut-off events. For 175264/175264 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 5396 event pairs, 74 based on Foata normal form. 8/1060 useless extension candidates. Maximal degree in co-relation 7143. Up to 691 conditions per place. [2024-06-04 17:51:13,181 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 156 selfloop transitions, 57 changer transitions 13/228 dead transitions. [2024-06-04 17:51:13,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 228 transitions, 2510 flow [2024-06-04 17:51:13,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 17:51:13,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 17:51:13,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-04 17:51:13,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-04 17:51:13,182 INFO L175 Difference]: Start difference. First operand has 254 places, 201 transitions, 1786 flow. Second operand 10 states and 125 transitions. [2024-06-04 17:51:13,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 228 transitions, 2510 flow [2024-06-04 17:51:13,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 228 transitions, 2318 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-04 17:51:13,555 INFO L231 Difference]: Finished difference. Result has 249 places, 198 transitions, 1699 flow [2024-06-04 17:51:13,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1600, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1699, PETRI_PLACES=249, PETRI_TRANSITIONS=198} [2024-06-04 17:51:13,556 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 218 predicate places. [2024-06-04 17:51:13,556 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 198 transitions, 1699 flow [2024-06-04 17:51:13,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:51:13,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:51:13,556 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:51:13,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-04 17:51:13,556 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)] === [2024-06-04 17:51:13,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:51:13,557 INFO L85 PathProgramCache]: Analyzing trace with hash -2091197476, now seen corresponding path program 10 times [2024-06-04 17:51:13,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:51:13,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65725494] [2024-06-04 17:51:13,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:51:13,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:51:13,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:51:18,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:51:18,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:51:18,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65725494] [2024-06-04 17:51:18,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65725494] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:51:18,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:51:18,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 17:51:18,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72017483] [2024-06-04 17:51:18,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:51:18,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 17:51:18,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:51:18,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 17:51:18,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 17:51:18,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:51:18,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 198 transitions, 1699 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:51:18,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:51:18,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:51:18,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:51:18,774 INFO L124 PetriNetUnfolderBase]: 558/1029 cut-off events. [2024-06-04 17:51:18,774 INFO L125 PetriNetUnfolderBase]: For 168086/168086 co-relation queries the response was YES. [2024-06-04 17:51:18,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6858 conditions, 1029 events. 558/1029 cut-off events. For 168086/168086 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5257 event pairs, 83 based on Foata normal form. 10/1039 useless extension candidates. Maximal degree in co-relation 6737. Up to 747 conditions per place. [2024-06-04 17:51:18,784 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 147 selfloop transitions, 56 changer transitions 14/219 dead transitions. [2024-06-04 17:51:18,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 219 transitions, 2195 flow [2024-06-04 17:51:18,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 17:51:18,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 17:51:18,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-04 17:51:18,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.365625 [2024-06-04 17:51:18,785 INFO L175 Difference]: Start difference. First operand has 249 places, 198 transitions, 1699 flow. Second operand 10 states and 117 transitions. [2024-06-04 17:51:18,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 219 transitions, 2195 flow [2024-06-04 17:51:19,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 219 transitions, 2078 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-04 17:51:19,083 INFO L231 Difference]: Finished difference. Result has 246 places, 195 transitions, 1677 flow [2024-06-04 17:51:19,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1582, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1677, PETRI_PLACES=246, PETRI_TRANSITIONS=195} [2024-06-04 17:51:19,083 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 215 predicate places. [2024-06-04 17:51:19,084 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 195 transitions, 1677 flow [2024-06-04 17:51:19,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:51:19,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:51:19,084 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:51:19,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-04 17:51:19,084 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)] === [2024-06-04 17:51:19,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:51:19,085 INFO L85 PathProgramCache]: Analyzing trace with hash 887606936, now seen corresponding path program 11 times [2024-06-04 17:51:19,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:51:19,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37968302] [2024-06-04 17:51:19,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:51:19,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:51:19,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:51:23,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:51:23,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:51:23,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37968302] [2024-06-04 17:51:23,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37968302] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:51:23,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:51:23,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 17:51:23,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713306503] [2024-06-04 17:51:23,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:51:23,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 17:51:23,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:51:23,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 17:51:23,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-04 17:51:23,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:51:23,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 195 transitions, 1677 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:51:23,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:51:23,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:51:23,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:51:24,183 INFO L124 PetriNetUnfolderBase]: 524/963 cut-off events. [2024-06-04 17:51:24,184 INFO L125 PetriNetUnfolderBase]: For 118698/118698 co-relation queries the response was YES. [2024-06-04 17:51:24,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5880 conditions, 963 events. 524/963 cut-off events. For 118698/118698 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 4810 event pairs, 61 based on Foata normal form. 8/971 useless extension candidates. Maximal degree in co-relation 5761. Up to 691 conditions per place. [2024-06-04 17:51:24,192 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 144 selfloop transitions, 53 changer transitions 16/215 dead transitions. [2024-06-04 17:51:24,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 215 transitions, 2157 flow [2024-06-04 17:51:24,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 17:51:24,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 17:51:24,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-04 17:51:24,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35625 [2024-06-04 17:51:24,193 INFO L175 Difference]: Start difference. First operand has 246 places, 195 transitions, 1677 flow. Second operand 10 states and 114 transitions. [2024-06-04 17:51:24,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 215 transitions, 2157 flow [2024-06-04 17:51:24,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 215 transitions, 2041 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-04 17:51:24,423 INFO L231 Difference]: Finished difference. Result has 244 places, 191 transitions, 1646 flow [2024-06-04 17:51:24,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1561, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1646, PETRI_PLACES=244, PETRI_TRANSITIONS=191} [2024-06-04 17:51:24,424 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 213 predicate places. [2024-06-04 17:51:24,424 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 191 transitions, 1646 flow [2024-06-04 17:51:24,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:51:24,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:51:24,424 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:51:24,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-04 17:51:24,425 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)] === [2024-06-04 17:51:24,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:51:24,425 INFO L85 PathProgramCache]: Analyzing trace with hash 581227518, now seen corresponding path program 12 times [2024-06-04 17:51:24,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:51:24,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422553404] [2024-06-04 17:51:24,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:51:24,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:51:24,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:51:28,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:51:28,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:51:28,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422553404] [2024-06-04 17:51:28,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422553404] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:51:28,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:51:28,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 17:51:28,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848078517] [2024-06-04 17:51:28,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:51:28,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 17:51:28,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:51:28,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 17:51:28,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 17:51:28,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:51:28,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 191 transitions, 1646 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:51:28,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:51:28,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:51:28,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:51:29,359 INFO L124 PetriNetUnfolderBase]: 538/993 cut-off events. [2024-06-04 17:51:29,359 INFO L125 PetriNetUnfolderBase]: For 149540/149540 co-relation queries the response was YES. [2024-06-04 17:51:29,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6715 conditions, 993 events. 538/993 cut-off events. For 149540/149540 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 4988 event pairs, 71 based on Foata normal form. 8/1001 useless extension candidates. Maximal degree in co-relation 6597. Up to 362 conditions per place. [2024-06-04 17:51:29,369 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 111 selfloop transitions, 91 changer transitions 16/220 dead transitions. [2024-06-04 17:51:29,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 220 transitions, 2370 flow [2024-06-04 17:51:29,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 17:51:29,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 17:51:29,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-04 17:51:29,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38125 [2024-06-04 17:51:29,370 INFO L175 Difference]: Start difference. First operand has 244 places, 191 transitions, 1646 flow. Second operand 10 states and 122 transitions. [2024-06-04 17:51:29,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 220 transitions, 2370 flow [2024-06-04 17:51:29,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 220 transitions, 2248 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-04 17:51:29,614 INFO L231 Difference]: Finished difference. Result has 237 places, 187 transitions, 1691 flow [2024-06-04 17:51:29,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1532, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1691, PETRI_PLACES=237, PETRI_TRANSITIONS=187} [2024-06-04 17:51:29,615 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 206 predicate places. [2024-06-04 17:51:29,615 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 187 transitions, 1691 flow [2024-06-04 17:51:29,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:51:29,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:51:29,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:51:29,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-04 17:51:29,616 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)] === [2024-06-04 17:51:29,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:51:29,616 INFO L85 PathProgramCache]: Analyzing trace with hash 730650340, now seen corresponding path program 13 times [2024-06-04 17:51:29,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:51:29,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891752783] [2024-06-04 17:51:29,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:51:29,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:51:29,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:51:34,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:51:34,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:51:34,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891752783] [2024-06-04 17:51:34,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891752783] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:51:34,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:51:34,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 17:51:34,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498876459] [2024-06-04 17:51:34,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:51:34,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 17:51:34,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:51:34,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 17:51:34,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-04 17:51:34,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:51:34,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 187 transitions, 1691 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) [2024-06-04 17:51:34,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:51:34,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:51:34,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:51:35,434 INFO L124 PetriNetUnfolderBase]: 520/957 cut-off events. [2024-06-04 17:51:35,434 INFO L125 PetriNetUnfolderBase]: For 147725/147725 co-relation queries the response was YES. [2024-06-04 17:51:35,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6597 conditions, 957 events. 520/957 cut-off events. For 147725/147725 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 4783 event pairs, 69 based on Foata normal form. 10/967 useless extension candidates. Maximal degree in co-relation 6482. Up to 505 conditions per place. [2024-06-04 17:51:35,443 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 85 selfloop transitions, 112 changer transitions 14/213 dead transitions. [2024-06-04 17:51:35,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 213 transitions, 2189 flow [2024-06-04 17:51:35,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 17:51:35,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 17:51:35,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-04 17:51:35,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3721590909090909 [2024-06-04 17:51:35,445 INFO L175 Difference]: Start difference. First operand has 237 places, 187 transitions, 1691 flow. Second operand 11 states and 131 transitions. [2024-06-04 17:51:35,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 213 transitions, 2189 flow [2024-06-04 17:51:35,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 213 transitions, 2058 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-04 17:51:35,687 INFO L231 Difference]: Finished difference. Result has 233 places, 184 transitions, 1762 flow [2024-06-04 17:51:35,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1560, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1762, PETRI_PLACES=233, PETRI_TRANSITIONS=184} [2024-06-04 17:51:35,687 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 202 predicate places. [2024-06-04 17:51:35,687 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 184 transitions, 1762 flow [2024-06-04 17:51:35,687 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) [2024-06-04 17:51:35,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:51:35,688 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:51:35,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-04 17:51:35,688 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)] === [2024-06-04 17:51:35,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:51:35,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1548638336, now seen corresponding path program 14 times [2024-06-04 17:51:35,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:51:35,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233155276] [2024-06-04 17:51:35,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:51:35,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:51:35,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:51:40,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:51:40,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:51:40,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233155276] [2024-06-04 17:51:40,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233155276] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:51:40,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:51:40,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 17:51:40,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382351705] [2024-06-04 17:51:40,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:51:40,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 17:51:40,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:51:40,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 17:51:40,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 17:51:40,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:51:40,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 184 transitions, 1762 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:51:40,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:51:40,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:51:40,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:51:40,630 INFO L124 PetriNetUnfolderBase]: 515/950 cut-off events. [2024-06-04 17:51:40,630 INFO L125 PetriNetUnfolderBase]: For 138362/138362 co-relation queries the response was YES. [2024-06-04 17:51:40,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6925 conditions, 950 events. 515/950 cut-off events. For 138362/138362 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4734 event pairs, 76 based on Foata normal form. 8/958 useless extension candidates. Maximal degree in co-relation 6813. Up to 499 conditions per place. [2024-06-04 17:51:40,637 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 102 selfloop transitions, 95 changer transitions 9/208 dead transitions. [2024-06-04 17:51:40,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 208 transitions, 2436 flow [2024-06-04 17:51:40,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 17:51:40,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 17:51:40,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-04 17:51:40,638 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38125 [2024-06-04 17:51:40,638 INFO L175 Difference]: Start difference. First operand has 233 places, 184 transitions, 1762 flow. Second operand 10 states and 122 transitions. [2024-06-04 17:51:40,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 208 transitions, 2436 flow [2024-06-04 17:51:40,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 208 transitions, 2104 flow, removed 3 selfloop flow, removed 13 redundant places. [2024-06-04 17:51:40,926 INFO L231 Difference]: Finished difference. Result has 229 places, 182 transitions, 1638 flow [2024-06-04 17:51:40,926 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1432, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1638, PETRI_PLACES=229, PETRI_TRANSITIONS=182} [2024-06-04 17:51:40,927 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 198 predicate places. [2024-06-04 17:51:40,927 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 182 transitions, 1638 flow [2024-06-04 17:51:40,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:51:40,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:51:40,927 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:51:40,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-04 17:51:40,928 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)] === [2024-06-04 17:51:40,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:51:40,929 INFO L85 PathProgramCache]: Analyzing trace with hash 133054424, now seen corresponding path program 15 times [2024-06-04 17:51:40,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:51:40,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354383675] [2024-06-04 17:51:40,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:51:40,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:51:40,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:51:46,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:51:46,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:51:46,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354383675] [2024-06-04 17:51:46,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354383675] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:51:46,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:51:46,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 17:51:46,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670910040] [2024-06-04 17:51:46,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:51:46,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 17:51:46,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:51:46,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 17:51:46,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-04 17:51:46,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:51:46,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 182 transitions, 1638 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:51:46,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:51:46,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:51:46,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:51:46,630 INFO L124 PetriNetUnfolderBase]: 508/937 cut-off events. [2024-06-04 17:51:46,631 INFO L125 PetriNetUnfolderBase]: For 138299/138299 co-relation queries the response was YES. [2024-06-04 17:51:46,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6679 conditions, 937 events. 508/937 cut-off events. For 138299/138299 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4651 event pairs, 74 based on Foata normal form. 8/945 useless extension candidates. Maximal degree in co-relation 6568. Up to 481 conditions per place. [2024-06-04 17:51:46,639 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 99 selfloop transitions, 92 changer transitions 13/206 dead transitions. [2024-06-04 17:51:46,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 206 transitions, 2280 flow [2024-06-04 17:51:46,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 17:51:46,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 17:51:46,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-04 17:51:46,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38125 [2024-06-04 17:51:46,641 INFO L175 Difference]: Start difference. First operand has 229 places, 182 transitions, 1638 flow. Second operand 10 states and 122 transitions. [2024-06-04 17:51:46,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 206 transitions, 2280 flow [2024-06-04 17:51:46,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 206 transitions, 2058 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-04 17:51:46,882 INFO L231 Difference]: Finished difference. Result has 227 places, 177 transitions, 1574 flow [2024-06-04 17:51:46,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1418, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1574, PETRI_PLACES=227, PETRI_TRANSITIONS=177} [2024-06-04 17:51:46,883 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 196 predicate places. [2024-06-04 17:51:46,883 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 177 transitions, 1574 flow [2024-06-04 17:51:46,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:51:46,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:51:46,883 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:51:46,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-04 17:51:46,883 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)] === [2024-06-04 17:51:46,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:51:46,884 INFO L85 PathProgramCache]: Analyzing trace with hash 874535290, now seen corresponding path program 16 times [2024-06-04 17:51:46,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:51:46,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069332148] [2024-06-04 17:51:46,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:51:46,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:51:46,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:51:51,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:51:51,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:51:51,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069332148] [2024-06-04 17:51:51,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069332148] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:51:51,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:51:51,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 17:51:51,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384776052] [2024-06-04 17:51:51,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:51:51,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 17:51:51,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:51:51,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 17:51:51,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-04 17:51:51,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:51:51,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 177 transitions, 1574 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) [2024-06-04 17:51:51,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:51:51,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:51:51,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:51:52,550 INFO L124 PetriNetUnfolderBase]: 521/963 cut-off events. [2024-06-04 17:51:52,551 INFO L125 PetriNetUnfolderBase]: For 172773/172773 co-relation queries the response was YES. [2024-06-04 17:51:52,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7517 conditions, 963 events. 521/963 cut-off events. For 172773/172773 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4831 event pairs, 81 based on Foata normal form. 8/971 useless extension candidates. Maximal degree in co-relation 7406. Up to 609 conditions per place. [2024-06-04 17:51:52,560 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 127 selfloop transitions, 69 changer transitions 7/205 dead transitions. [2024-06-04 17:51:52,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 205 transitions, 2234 flow [2024-06-04 17:51:52,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 17:51:52,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 17:51:52,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-04 17:51:52,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3721590909090909 [2024-06-04 17:51:52,561 INFO L175 Difference]: Start difference. First operand has 227 places, 177 transitions, 1574 flow. Second operand 11 states and 131 transitions. [2024-06-04 17:51:52,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 205 transitions, 2234 flow [2024-06-04 17:51:52,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 205 transitions, 2036 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-04 17:51:52,960 INFO L231 Difference]: Finished difference. Result has 222 places, 175 transitions, 1508 flow [2024-06-04 17:51:52,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1380, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1508, PETRI_PLACES=222, PETRI_TRANSITIONS=175} [2024-06-04 17:51:52,961 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 191 predicate places. [2024-06-04 17:51:52,961 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 175 transitions, 1508 flow [2024-06-04 17:51:52,961 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) [2024-06-04 17:51:52,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:51:52,962 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:51:52,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-04 17:51:52,964 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)] === [2024-06-04 17:51:52,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:51:52,964 INFO L85 PathProgramCache]: Analyzing trace with hash 874742680, now seen corresponding path program 17 times [2024-06-04 17:51:52,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:51:52,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948968856] [2024-06-04 17:51:52,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:51:52,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:51:53,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:51:57,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:51:57,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:51:57,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948968856] [2024-06-04 17:51:57,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948968856] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:51:57,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:51:57,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 17:51:57,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514847648] [2024-06-04 17:51:57,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:51:57,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 17:51:57,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:51:57,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 17:51:57,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-04 17:51:58,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:51:58,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 175 transitions, 1508 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) [2024-06-04 17:51:58,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:51:58,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:51:58,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:51:58,622 INFO L124 PetriNetUnfolderBase]: 519/961 cut-off events. [2024-06-04 17:51:58,622 INFO L125 PetriNetUnfolderBase]: For 177212/177212 co-relation queries the response was YES. [2024-06-04 17:51:58,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7398 conditions, 961 events. 519/961 cut-off events. For 177212/177212 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4845 event pairs, 87 based on Foata normal form. 10/971 useless extension candidates. Maximal degree in co-relation 7288. Up to 683 conditions per place. [2024-06-04 17:51:58,631 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 120 selfloop transitions, 65 changer transitions 11/198 dead transitions. [2024-06-04 17:51:58,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 198 transitions, 1968 flow [2024-06-04 17:51:58,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 17:51:58,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 17:51:58,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-04 17:51:58,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35511363636363635 [2024-06-04 17:51:58,632 INFO L175 Difference]: Start difference. First operand has 222 places, 175 transitions, 1508 flow. Second operand 11 states and 125 transitions. [2024-06-04 17:51:58,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 198 transitions, 1968 flow [2024-06-04 17:51:58,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 198 transitions, 1830 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-04 17:51:58,977 INFO L231 Difference]: Finished difference. Result has 221 places, 172 transitions, 1480 flow [2024-06-04 17:51:58,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1370, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1480, PETRI_PLACES=221, PETRI_TRANSITIONS=172} [2024-06-04 17:51:58,977 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 190 predicate places. [2024-06-04 17:51:58,977 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 172 transitions, 1480 flow [2024-06-04 17:51:58,978 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) [2024-06-04 17:51:58,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:51:58,978 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:51:58,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-04 17:51:58,978 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)] === [2024-06-04 17:51:58,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:51:58,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1926760164, now seen corresponding path program 18 times [2024-06-04 17:51:58,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:51:58,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821341745] [2024-06-04 17:51:58,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:51:58,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:51:59,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:52:05,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:52:05,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:52:05,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821341745] [2024-06-04 17:52:05,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821341745] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:52:05,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:52:05,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 17:52:05,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184973496] [2024-06-04 17:52:05,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:52:05,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 17:52:05,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:52:05,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 17:52:05,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-04 17:52:05,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:52:05,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 172 transitions, 1480 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) [2024-06-04 17:52:05,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:52:05,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:52:05,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:52:05,974 INFO L124 PetriNetUnfolderBase]: 513/955 cut-off events. [2024-06-04 17:52:05,974 INFO L125 PetriNetUnfolderBase]: For 180306/180306 co-relation queries the response was YES. [2024-06-04 17:52:05,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7363 conditions, 955 events. 513/955 cut-off events. For 180306/180306 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4840 event pairs, 93 based on Foata normal form. 12/967 useless extension candidates. Maximal degree in co-relation 7254. Up to 654 conditions per place. [2024-06-04 17:52:05,982 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 122 selfloop transitions, 63 changer transitions 9/196 dead transitions. [2024-06-04 17:52:05,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 196 transitions, 1970 flow [2024-06-04 17:52:05,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 17:52:05,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 17:52:05,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-04 17:52:05,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515625 [2024-06-04 17:52:05,983 INFO L175 Difference]: Start difference. First operand has 221 places, 172 transitions, 1480 flow. Second operand 12 states and 135 transitions. [2024-06-04 17:52:05,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 196 transitions, 1970 flow [2024-06-04 17:52:06,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 196 transitions, 1836 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-04 17:52:06,288 INFO L231 Difference]: Finished difference. Result has 220 places, 170 transitions, 1491 flow [2024-06-04 17:52:06,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1346, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1491, PETRI_PLACES=220, PETRI_TRANSITIONS=170} [2024-06-04 17:52:06,289 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 189 predicate places. [2024-06-04 17:52:06,289 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 170 transitions, 1491 flow [2024-06-04 17:52:06,289 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) [2024-06-04 17:52:06,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:52:06,289 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:52:06,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-04 17:52:06,289 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)] === [2024-06-04 17:52:06,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:52:06,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1926754584, now seen corresponding path program 19 times [2024-06-04 17:52:06,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:52:06,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21697340] [2024-06-04 17:52:06,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:52:06,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:52:06,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:52:11,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:52:11,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:52:11,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21697340] [2024-06-04 17:52:11,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21697340] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:52:11,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:52:11,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 17:52:11,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259480041] [2024-06-04 17:52:11,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:52:11,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 17:52:11,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:52:11,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 17:52:11,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-04 17:52:11,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:52:11,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 170 transitions, 1491 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) [2024-06-04 17:52:11,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:52:11,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:52:11,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:52:12,136 INFO L124 PetriNetUnfolderBase]: 530/994 cut-off events. [2024-06-04 17:52:12,136 INFO L125 PetriNetUnfolderBase]: For 196222/196222 co-relation queries the response was YES. [2024-06-04 17:52:12,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8231 conditions, 994 events. 530/994 cut-off events. For 196222/196222 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 5101 event pairs, 102 based on Foata normal form. 8/1002 useless extension candidates. Maximal degree in co-relation 8123. Up to 638 conditions per place. [2024-06-04 17:52:12,145 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 126 selfloop transitions, 59 changer transitions 8/195 dead transitions. [2024-06-04 17:52:12,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 195 transitions, 2117 flow [2024-06-04 17:52:12,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 17:52:12,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 17:52:12,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-04 17:52:12,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-04 17:52:12,146 INFO L175 Difference]: Start difference. First operand has 220 places, 170 transitions, 1491 flow. Second operand 11 states and 127 transitions. [2024-06-04 17:52:12,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 195 transitions, 2117 flow [2024-06-04 17:52:12,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 195 transitions, 1959 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-06-04 17:52:12,508 INFO L231 Difference]: Finished difference. Result has 219 places, 167 transitions, 1436 flow [2024-06-04 17:52:12,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1335, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1436, PETRI_PLACES=219, PETRI_TRANSITIONS=167} [2024-06-04 17:52:12,509 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 188 predicate places. [2024-06-04 17:52:12,509 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 167 transitions, 1436 flow [2024-06-04 17:52:12,509 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) [2024-06-04 17:52:12,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:52:12,509 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:52:12,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-04 17:52:12,510 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)] === [2024-06-04 17:52:12,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:52:12,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1727452794, now seen corresponding path program 20 times [2024-06-04 17:52:12,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:52:12,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441073692] [2024-06-04 17:52:12,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:52:12,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:52:12,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:52:17,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:52:17,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:52:17,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441073692] [2024-06-04 17:52:17,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441073692] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:52:17,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:52:17,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 17:52:17,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760294820] [2024-06-04 17:52:17,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:52:17,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 17:52:17,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:52:17,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 17:52:17,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-04 17:52:17,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:52:17,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 167 transitions, 1436 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:52:17,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:52:17,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:52:17,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:52:18,305 INFO L124 PetriNetUnfolderBase]: 552/1040 cut-off events. [2024-06-04 17:52:18,305 INFO L125 PetriNetUnfolderBase]: For 229306/229306 co-relation queries the response was YES. [2024-06-04 17:52:18,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9085 conditions, 1040 events. 552/1040 cut-off events. For 229306/229306 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 5440 event pairs, 105 based on Foata normal form. 8/1048 useless extension candidates. Maximal degree in co-relation 8977. Up to 568 conditions per place. [2024-06-04 17:52:18,313 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 84 selfloop transitions, 101 changer transitions 7/194 dead transitions. [2024-06-04 17:52:18,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 194 transitions, 2066 flow [2024-06-04 17:52:18,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 17:52:18,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 17:52:18,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-04 17:52:18,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-04 17:52:18,314 INFO L175 Difference]: Start difference. First operand has 219 places, 167 transitions, 1436 flow. Second operand 10 states and 124 transitions. [2024-06-04 17:52:18,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 194 transitions, 2066 flow [2024-06-04 17:52:18,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 194 transitions, 1940 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-04 17:52:18,697 INFO L231 Difference]: Finished difference. Result has 215 places, 165 transitions, 1508 flow [2024-06-04 17:52:18,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1316, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1508, PETRI_PLACES=215, PETRI_TRANSITIONS=165} [2024-06-04 17:52:18,709 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 184 predicate places. [2024-06-04 17:52:18,709 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 165 transitions, 1508 flow [2024-06-04 17:52:18,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:52:18,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:52:18,710 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:52:18,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-04 17:52:18,710 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)] === [2024-06-04 17:52:18,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:52:18,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1926961974, now seen corresponding path program 21 times [2024-06-04 17:52:18,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:52:18,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720816791] [2024-06-04 17:52:18,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:52:18,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:52:18,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:52:23,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:52:23,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:52:23,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720816791] [2024-06-04 17:52:23,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720816791] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:52:23,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:52:23,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 17:52:23,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488301198] [2024-06-04 17:52:23,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:52:23,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 17:52:23,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:52:23,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 17:52:23,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 17:52:24,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:52:24,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 165 transitions, 1508 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) [2024-06-04 17:52:24,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:52:24,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:52:24,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:52:24,527 INFO L124 PetriNetUnfolderBase]: 550/1038 cut-off events. [2024-06-04 17:52:24,527 INFO L125 PetriNetUnfolderBase]: For 223656/223656 co-relation queries the response was YES. [2024-06-04 17:52:24,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9080 conditions, 1038 events. 550/1038 cut-off events. For 223656/223656 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 5428 event pairs, 129 based on Foata normal form. 10/1048 useless extension candidates. Maximal degree in co-relation 8974. Up to 760 conditions per place. [2024-06-04 17:52:24,534 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 118 selfloop transitions, 55 changer transitions 11/186 dead transitions. [2024-06-04 17:52:24,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 186 transitions, 1940 flow [2024-06-04 17:52:24,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 17:52:24,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 17:52:24,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-04 17:52:24,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3522727272727273 [2024-06-04 17:52:24,535 INFO L175 Difference]: Start difference. First operand has 215 places, 165 transitions, 1508 flow. Second operand 11 states and 124 transitions. [2024-06-04 17:52:24,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 186 transitions, 1940 flow [2024-06-04 17:52:24,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 186 transitions, 1736 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-04 17:52:24,885 INFO L231 Difference]: Finished difference. Result has 215 places, 162 transitions, 1393 flow [2024-06-04 17:52:24,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1304, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1393, PETRI_PLACES=215, PETRI_TRANSITIONS=162} [2024-06-04 17:52:24,886 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 184 predicate places. [2024-06-04 17:52:24,886 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 162 transitions, 1393 flow [2024-06-04 17:52:24,886 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) [2024-06-04 17:52:24,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:52:24,886 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:52:24,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-04 17:52:24,886 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)] === [2024-06-04 17:52:24,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:52:24,887 INFO L85 PathProgramCache]: Analyzing trace with hash 874750616, now seen corresponding path program 1 times [2024-06-04 17:52:24,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:52:24,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103091498] [2024-06-04 17:52:24,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:52:24,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:52:24,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:52:30,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:52:30,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:52:30,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103091498] [2024-06-04 17:52:30,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103091498] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:52:30,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:52:30,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 17:52:30,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361142693] [2024-06-04 17:52:30,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:52:30,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 17:52:30,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:52:30,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 17:52:30,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 17:52:30,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:52:30,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 162 transitions, 1393 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:52:30,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:52:30,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:52:30,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:52:30,881 INFO L124 PetriNetUnfolderBase]: 521/983 cut-off events. [2024-06-04 17:52:30,882 INFO L125 PetriNetUnfolderBase]: For 188117/188117 co-relation queries the response was YES. [2024-06-04 17:52:30,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8544 conditions, 983 events. 521/983 cut-off events. For 188117/188117 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 5081 event pairs, 114 based on Foata normal form. 2/985 useless extension candidates. Maximal degree in co-relation 8439. Up to 749 conditions per place. [2024-06-04 17:52:30,891 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 113 selfloop transitions, 64 changer transitions 0/179 dead transitions. [2024-06-04 17:52:30,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 179 transitions, 1791 flow [2024-06-04 17:52:30,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 17:52:30,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 17:52:30,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-04 17:52:30,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-04 17:52:30,893 INFO L175 Difference]: Start difference. First operand has 215 places, 162 transitions, 1393 flow. Second operand 10 states and 112 transitions. [2024-06-04 17:52:30,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 179 transitions, 1791 flow [2024-06-04 17:52:31,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 179 transitions, 1659 flow, removed 11 selfloop flow, removed 10 redundant places. [2024-06-04 17:52:31,223 INFO L231 Difference]: Finished difference. Result has 212 places, 162 transitions, 1393 flow [2024-06-04 17:52:31,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1261, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1393, PETRI_PLACES=212, PETRI_TRANSITIONS=162} [2024-06-04 17:52:31,230 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 181 predicate places. [2024-06-04 17:52:31,230 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 162 transitions, 1393 flow [2024-06-04 17:52:31,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:52:31,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:52:31,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:52:31,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-04 17:52:31,231 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)] === [2024-06-04 17:52:31,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:52:31,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1581760202, now seen corresponding path program 22 times [2024-06-04 17:52:31,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:52:31,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200107704] [2024-06-04 17:52:31,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:52:31,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:52:31,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:52:36,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:52:36,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:52:36,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200107704] [2024-06-04 17:52:36,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200107704] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:52:36,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:52:36,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 17:52:36,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64152367] [2024-06-04 17:52:36,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:52:36,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 17:52:36,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:52:36,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 17:52:36,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 17:52:36,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:52:36,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 162 transitions, 1393 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:52:36,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:52:36,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:52:36,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:52:36,696 INFO L124 PetriNetUnfolderBase]: 508/960 cut-off events. [2024-06-04 17:52:36,697 INFO L125 PetriNetUnfolderBase]: For 177128/177128 co-relation queries the response was YES. [2024-06-04 17:52:36,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7642 conditions, 960 events. 508/960 cut-off events. For 177128/177128 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4918 event pairs, 93 based on Foata normal form. 10/970 useless extension candidates. Maximal degree in co-relation 7538. Up to 557 conditions per place. [2024-06-04 17:52:36,705 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 74 selfloop transitions, 93 changer transitions 15/184 dead transitions. [2024-06-04 17:52:36,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 184 transitions, 1823 flow [2024-06-04 17:52:36,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 17:52:36,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 17:52:36,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-04 17:52:36,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36875 [2024-06-04 17:52:36,706 INFO L175 Difference]: Start difference. First operand has 212 places, 162 transitions, 1393 flow. Second operand 10 states and 118 transitions. [2024-06-04 17:52:36,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 184 transitions, 1823 flow [2024-06-04 17:52:37,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 184 transitions, 1695 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-04 17:52:37,002 INFO L231 Difference]: Finished difference. Result has 213 places, 156 transitions, 1417 flow [2024-06-04 17:52:37,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1265, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1417, PETRI_PLACES=213, PETRI_TRANSITIONS=156} [2024-06-04 17:52:37,003 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 182 predicate places. [2024-06-04 17:52:37,003 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 156 transitions, 1417 flow [2024-06-04 17:52:37,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:52:37,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:52:37,003 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:52:37,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-04 17:52:37,004 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)] === [2024-06-04 17:52:37,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:52:37,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1727308644, now seen corresponding path program 23 times [2024-06-04 17:52:37,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:52:37,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311330998] [2024-06-04 17:52:37,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:52:37,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:52:37,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:52:41,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:52:41,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:52:41,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311330998] [2024-06-04 17:52:41,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311330998] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:52:41,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:52:41,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 17:52:41,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257058897] [2024-06-04 17:52:41,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:52:41,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 17:52:41,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:52:41,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 17:52:41,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 17:52:42,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:52:42,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 156 transitions, 1417 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:52:42,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:52:42,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:52:42,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:52:42,637 INFO L124 PetriNetUnfolderBase]: 506/966 cut-off events. [2024-06-04 17:52:42,637 INFO L125 PetriNetUnfolderBase]: For 194108/194108 co-relation queries the response was YES. [2024-06-04 17:52:42,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8215 conditions, 966 events. 506/966 cut-off events. For 194108/194108 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4973 event pairs, 94 based on Foata normal form. 8/974 useless extension candidates. Maximal degree in co-relation 8110. Up to 313 conditions per place. [2024-06-04 17:52:42,646 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 75 selfloop transitions, 87 changer transitions 17/181 dead transitions. [2024-06-04 17:52:42,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 181 transitions, 2003 flow [2024-06-04 17:52:42,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 17:52:42,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 17:52:42,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-04 17:52:42,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36875 [2024-06-04 17:52:42,647 INFO L175 Difference]: Start difference. First operand has 213 places, 156 transitions, 1417 flow. Second operand 10 states and 118 transitions. [2024-06-04 17:52:42,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 181 transitions, 2003 flow [2024-06-04 17:52:42,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 181 transitions, 1805 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-04 17:52:42,922 INFO L231 Difference]: Finished difference. Result has 208 places, 146 transitions, 1334 flow [2024-06-04 17:52:42,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1225, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1334, PETRI_PLACES=208, PETRI_TRANSITIONS=146} [2024-06-04 17:52:42,922 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 177 predicate places. [2024-06-04 17:52:42,922 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 146 transitions, 1334 flow [2024-06-04 17:52:42,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:52:42,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:52:42,923 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:52:42,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-04 17:52:42,923 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)] === [2024-06-04 17:52:42,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:52:42,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1934379220, now seen corresponding path program 2 times [2024-06-04 17:52:42,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:52:42,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544603671] [2024-06-04 17:52:42,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:52:42,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:52:42,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:52:48,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:52:48,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:52:48,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544603671] [2024-06-04 17:52:48,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544603671] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:52:48,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:52:48,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 17:52:48,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558145617] [2024-06-04 17:52:48,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:52:48,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 17:52:48,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:52:48,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 17:52:48,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 17:52:48,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:52:48,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 146 transitions, 1334 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) [2024-06-04 17:52:48,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:52:48,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:52:48,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:52:48,814 INFO L124 PetriNetUnfolderBase]: 473/899 cut-off events. [2024-06-04 17:52:48,814 INFO L125 PetriNetUnfolderBase]: For 167211/167211 co-relation queries the response was YES. [2024-06-04 17:52:48,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7941 conditions, 899 events. 473/899 cut-off events. For 167211/167211 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 4524 event pairs, 112 based on Foata normal form. 2/901 useless extension candidates. Maximal degree in co-relation 7838. Up to 554 conditions per place. [2024-06-04 17:52:48,822 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 84 selfloop transitions, 75 changer transitions 0/161 dead transitions. [2024-06-04 17:52:48,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 161 transitions, 1722 flow [2024-06-04 17:52:48,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 17:52:48,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 17:52:48,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-04 17:52:48,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.340625 [2024-06-04 17:52:48,823 INFO L175 Difference]: Start difference. First operand has 208 places, 146 transitions, 1334 flow. Second operand 10 states and 109 transitions. [2024-06-04 17:52:48,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 161 transitions, 1722 flow [2024-06-04 17:52:49,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 161 transitions, 1568 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-04 17:52:49,060 INFO L231 Difference]: Finished difference. Result has 198 places, 147 transitions, 1370 flow [2024-06-04 17:52:49,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1180, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1370, PETRI_PLACES=198, PETRI_TRANSITIONS=147} [2024-06-04 17:52:49,060 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 167 predicate places. [2024-06-04 17:52:49,060 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 147 transitions, 1370 flow [2024-06-04 17:52:49,060 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) [2024-06-04 17:52:49,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:52:49,060 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:52:49,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-04 17:52:49,061 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)] === [2024-06-04 17:52:49,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:52:49,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1934111814, now seen corresponding path program 24 times [2024-06-04 17:52:49,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:52:49,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526199501] [2024-06-04 17:52:49,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:52:49,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:52:49,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:52:54,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:52:54,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:52:54,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526199501] [2024-06-04 17:52:54,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526199501] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:52:54,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:52:54,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 17:52:54,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270584891] [2024-06-04 17:52:54,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:52:54,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 17:52:54,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:52:54,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 17:52:54,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-04 17:52:54,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:52:54,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 147 transitions, 1370 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) [2024-06-04 17:52:54,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:52:54,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:52:54,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:52:55,050 INFO L124 PetriNetUnfolderBase]: 460/876 cut-off events. [2024-06-04 17:52:55,050 INFO L125 PetriNetUnfolderBase]: For 143808/143808 co-relation queries the response was YES. [2024-06-04 17:52:55,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7006 conditions, 876 events. 460/876 cut-off events. For 143808/143808 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 4378 event pairs, 97 based on Foata normal form. 10/886 useless extension candidates. Maximal degree in co-relation 6907. Up to 598 conditions per place. [2024-06-04 17:52:55,057 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 101 selfloop transitions, 53 changer transitions 11/167 dead transitions. [2024-06-04 17:52:55,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 167 transitions, 1760 flow [2024-06-04 17:52:55,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 17:52:55,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 17:52:55,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-04 17:52:55,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-04 17:52:55,058 INFO L175 Difference]: Start difference. First operand has 198 places, 147 transitions, 1370 flow. Second operand 11 states and 120 transitions. [2024-06-04 17:52:55,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 167 transitions, 1760 flow [2024-06-04 17:52:55,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 167 transitions, 1580 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-04 17:52:55,243 INFO L231 Difference]: Finished difference. Result has 201 places, 144 transitions, 1273 flow [2024-06-04 17:52:55,243 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1190, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1273, PETRI_PLACES=201, PETRI_TRANSITIONS=144} [2024-06-04 17:52:55,244 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 170 predicate places. [2024-06-04 17:52:55,244 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 144 transitions, 1273 flow [2024-06-04 17:52:55,244 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) [2024-06-04 17:52:55,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:52:55,244 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:52:55,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-04 17:52:55,244 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)] === [2024-06-04 17:52:55,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:52:55,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1788690348, now seen corresponding path program 3 times [2024-06-04 17:52:55,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:52:55,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375201781] [2024-06-04 17:52:55,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:52:55,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:52:55,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:53:00,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:53:00,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:53:00,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375201781] [2024-06-04 17:53:00,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375201781] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:53:00,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:53:00,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 17:53:00,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752986815] [2024-06-04 17:53:00,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:53:00,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 17:53:00,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:53:00,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 17:53:00,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 17:53:00,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:53:00,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 144 transitions, 1273 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) [2024-06-04 17:53:00,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:53:00,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:53:00,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:53:00,740 INFO L124 PetriNetUnfolderBase]: 445/847 cut-off events. [2024-06-04 17:53:00,740 INFO L125 PetriNetUnfolderBase]: For 133346/133346 co-relation queries the response was YES. [2024-06-04 17:53:00,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7117 conditions, 847 events. 445/847 cut-off events. For 133346/133346 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 4197 event pairs, 98 based on Foata normal form. 2/849 useless extension candidates. Maximal degree in co-relation 7017. Up to 459 conditions per place. [2024-06-04 17:53:00,748 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 82 selfloop transitions, 77 changer transitions 0/161 dead transitions. [2024-06-04 17:53:00,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 161 transitions, 1847 flow [2024-06-04 17:53:00,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 17:53:00,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 17:53:00,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-04 17:53:00,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-04 17:53:00,750 INFO L175 Difference]: Start difference. First operand has 201 places, 144 transitions, 1273 flow. Second operand 10 states and 110 transitions. [2024-06-04 17:53:00,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 161 transitions, 1847 flow [2024-06-04 17:53:00,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 161 transitions, 1733 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-04 17:53:00,950 INFO L231 Difference]: Finished difference. Result has 197 places, 146 transitions, 1396 flow [2024-06-04 17:53:00,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1163, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1396, PETRI_PLACES=197, PETRI_TRANSITIONS=146} [2024-06-04 17:53:00,951 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 166 predicate places. [2024-06-04 17:53:00,951 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 146 transitions, 1396 flow [2024-06-04 17:53:00,951 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) [2024-06-04 17:53:00,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:53:00,951 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:53:00,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-04 17:53:00,952 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)] === [2024-06-04 17:53:00,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:53:00,952 INFO L85 PathProgramCache]: Analyzing trace with hash 728842698, now seen corresponding path program 25 times [2024-06-04 17:53:00,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:53:00,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532361748] [2024-06-04 17:53:00,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:53:00,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:53:01,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:53:05,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:53:05,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:53:05,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532361748] [2024-06-04 17:53:05,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532361748] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:53:05,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:53:05,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 17:53:05,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950832365] [2024-06-04 17:53:05,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:53:05,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 17:53:05,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:53:05,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 17:53:05,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-04 17:53:05,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:53:05,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 146 transitions, 1396 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) [2024-06-04 17:53:05,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:53:05,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:53:05,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:53:06,365 INFO L124 PetriNetUnfolderBase]: 432/824 cut-off events. [2024-06-04 17:53:06,366 INFO L125 PetriNetUnfolderBase]: For 123360/123360 co-relation queries the response was YES. [2024-06-04 17:53:06,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6380 conditions, 824 events. 432/824 cut-off events. For 123360/123360 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 4066 event pairs, 83 based on Foata normal form. 10/834 useless extension candidates. Maximal degree in co-relation 6281. Up to 545 conditions per place. [2024-06-04 17:53:06,372 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 97 selfloop transitions, 57 changer transitions 13/169 dead transitions. [2024-06-04 17:53:06,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 169 transitions, 1798 flow [2024-06-04 17:53:06,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 17:53:06,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 17:53:06,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-04 17:53:06,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3494318181818182 [2024-06-04 17:53:06,373 INFO L175 Difference]: Start difference. First operand has 197 places, 146 transitions, 1396 flow. Second operand 11 states and 123 transitions. [2024-06-04 17:53:06,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 169 transitions, 1798 flow [2024-06-04 17:53:06,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 169 transitions, 1589 flow, removed 28 selfloop flow, removed 11 redundant places. [2024-06-04 17:53:06,589 INFO L231 Difference]: Finished difference. Result has 197 places, 142 transitions, 1272 flow [2024-06-04 17:53:06,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1187, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1272, PETRI_PLACES=197, PETRI_TRANSITIONS=142} [2024-06-04 17:53:06,590 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 166 predicate places. [2024-06-04 17:53:06,590 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 142 transitions, 1272 flow [2024-06-04 17:53:06,590 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) [2024-06-04 17:53:06,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:53:06,590 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:53:06,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-04 17:53:06,590 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)] === [2024-06-04 17:53:06,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:53:06,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1732820754, now seen corresponding path program 26 times [2024-06-04 17:53:06,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:53:06,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555365863] [2024-06-04 17:53:06,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:53:06,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:53:06,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:53:11,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:53:11,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:53:11,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555365863] [2024-06-04 17:53:11,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555365863] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:53:11,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:53:11,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 17:53:11,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440441743] [2024-06-04 17:53:11,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:53:11,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 17:53:11,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:53:11,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 17:53:11,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-04 17:53:11,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:53:11,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 142 transitions, 1272 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) [2024-06-04 17:53:11,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:53:11,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:53:11,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:53:11,905 INFO L124 PetriNetUnfolderBase]: 423/809 cut-off events. [2024-06-04 17:53:11,905 INFO L125 PetriNetUnfolderBase]: For 126148/126148 co-relation queries the response was YES. [2024-06-04 17:53:11,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6094 conditions, 809 events. 423/809 cut-off events. For 126148/126148 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3950 event pairs, 87 based on Foata normal form. 10/819 useless extension candidates. Maximal degree in co-relation 5998. Up to 522 conditions per place. [2024-06-04 17:53:11,910 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 100 selfloop transitions, 51 changer transitions 11/164 dead transitions. [2024-06-04 17:53:11,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 164 transitions, 1664 flow [2024-06-04 17:53:11,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 17:53:11,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 17:53:11,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-04 17:53:11,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35511363636363635 [2024-06-04 17:53:11,911 INFO L175 Difference]: Start difference. First operand has 197 places, 142 transitions, 1272 flow. Second operand 11 states and 125 transitions. [2024-06-04 17:53:11,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 164 transitions, 1664 flow [2024-06-04 17:53:12,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 164 transitions, 1544 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-04 17:53:12,095 INFO L231 Difference]: Finished difference. Result has 192 places, 139 transitions, 1233 flow [2024-06-04 17:53:12,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1152, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1233, PETRI_PLACES=192, PETRI_TRANSITIONS=139} [2024-06-04 17:53:12,096 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 161 predicate places. [2024-06-04 17:53:12,096 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 139 transitions, 1233 flow [2024-06-04 17:53:12,096 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) [2024-06-04 17:53:12,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:53:12,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:53:12,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-04 17:53:12,096 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)] === [2024-06-04 17:53:12,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:53:12,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1587117002, now seen corresponding path program 27 times [2024-06-04 17:53:12,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:53:12,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437312639] [2024-06-04 17:53:12,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:53:12,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:53:12,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:53:16,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:53:16,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:53:16,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437312639] [2024-06-04 17:53:16,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437312639] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:53:16,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:53:16,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 17:53:16,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324007597] [2024-06-04 17:53:16,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:53:16,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 17:53:16,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:53:16,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 17:53:16,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-04 17:53:17,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:53:17,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 139 transitions, 1233 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) [2024-06-04 17:53:17,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:53:17,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:53:17,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:53:17,617 INFO L124 PetriNetUnfolderBase]: 440/848 cut-off events. [2024-06-04 17:53:17,618 INFO L125 PetriNetUnfolderBase]: For 140180/140180 co-relation queries the response was YES. [2024-06-04 17:53:17,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6781 conditions, 848 events. 440/848 cut-off events. For 140180/140180 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 4230 event pairs, 96 based on Foata normal form. 8/856 useless extension candidates. Maximal degree in co-relation 6687. Up to 506 conditions per place. [2024-06-04 17:53:17,623 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 106 selfloop transitions, 49 changer transitions 8/165 dead transitions. [2024-06-04 17:53:17,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 165 transitions, 1783 flow [2024-06-04 17:53:17,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 17:53:17,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 17:53:17,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-04 17:53:17,624 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-04 17:53:17,624 INFO L175 Difference]: Start difference. First operand has 192 places, 139 transitions, 1233 flow. Second operand 11 states and 127 transitions. [2024-06-04 17:53:17,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 165 transitions, 1783 flow [2024-06-04 17:53:17,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 165 transitions, 1673 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-04 17:53:17,790 INFO L231 Difference]: Finished difference. Result has 190 places, 136 transitions, 1207 flow [2024-06-04 17:53:17,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1127, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1207, PETRI_PLACES=190, PETRI_TRANSITIONS=136} [2024-06-04 17:53:17,791 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 159 predicate places. [2024-06-04 17:53:17,791 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 136 transitions, 1207 flow [2024-06-04 17:53:17,791 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) [2024-06-04 17:53:17,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:53:17,791 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:53:17,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-04 17:53:17,792 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)] === [2024-06-04 17:53:17,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:53:17,792 INFO L85 PathProgramCache]: Analyzing trace with hash -546260532, now seen corresponding path program 28 times [2024-06-04 17:53:17,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:53:17,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594364400] [2024-06-04 17:53:17,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:53:17,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:53:17,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:53:22,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:53:22,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:53:22,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594364400] [2024-06-04 17:53:22,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594364400] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:53:22,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:53:22,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 17:53:22,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808937061] [2024-06-04 17:53:22,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:53:22,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 17:53:22,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:53:22,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 17:53:22,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 17:53:22,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:53:22,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 136 transitions, 1207 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) [2024-06-04 17:53:22,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:53:22,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:53:22,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:53:23,059 INFO L124 PetriNetUnfolderBase]: 408/784 cut-off events. [2024-06-04 17:53:23,060 INFO L125 PetriNetUnfolderBase]: For 116165/116165 co-relation queries the response was YES. [2024-06-04 17:53:23,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5848 conditions, 784 events. 408/784 cut-off events. For 116165/116165 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3785 event pairs, 87 based on Foata normal form. 10/794 useless extension candidates. Maximal degree in co-relation 5755. Up to 506 conditions per place. [2024-06-04 17:53:23,066 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 97 selfloop transitions, 47 changer transitions 11/157 dead transitions. [2024-06-04 17:53:23,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 157 transitions, 1581 flow [2024-06-04 17:53:23,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 17:53:23,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 17:53:23,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-04 17:53:23,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-04 17:53:23,067 INFO L175 Difference]: Start difference. First operand has 190 places, 136 transitions, 1207 flow. Second operand 11 states and 121 transitions. [2024-06-04 17:53:23,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 157 transitions, 1581 flow [2024-06-04 17:53:23,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 157 transitions, 1479 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-04 17:53:23,222 INFO L231 Difference]: Finished difference. Result has 187 places, 133 transitions, 1175 flow [2024-06-04 17:53:23,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1105, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1175, PETRI_PLACES=187, PETRI_TRANSITIONS=133} [2024-06-04 17:53:23,222 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 156 predicate places. [2024-06-04 17:53:23,222 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 133 transitions, 1175 flow [2024-06-04 17:53:23,222 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) [2024-06-04 17:53:23,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:53:23,223 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:53:23,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-04 17:53:23,223 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)] === [2024-06-04 17:53:23,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:53:23,223 INFO L85 PathProgramCache]: Analyzing trace with hash 185108166, now seen corresponding path program 4 times [2024-06-04 17:53:23,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:53:23,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375137152] [2024-06-04 17:53:23,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:53:23,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:53:23,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:53:28,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:53:28,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:53:28,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375137152] [2024-06-04 17:53:28,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375137152] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:53:28,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:53:28,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 17:53:28,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172714195] [2024-06-04 17:53:28,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:53:28,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 17:53:28,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:53:28,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 17:53:28,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 17:53:28,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:53:28,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 133 transitions, 1175 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:53:28,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:53:28,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:53:28,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:53:28,969 INFO L124 PetriNetUnfolderBase]: 379/729 cut-off events. [2024-06-04 17:53:28,970 INFO L125 PetriNetUnfolderBase]: For 85853/85853 co-relation queries the response was YES. [2024-06-04 17:53:28,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5426 conditions, 729 events. 379/729 cut-off events. For 85853/85853 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3449 event pairs, 88 based on Foata normal form. 2/731 useless extension candidates. Maximal degree in co-relation 5335. Up to 418 conditions per place. [2024-06-04 17:53:28,975 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 87 selfloop transitions, 59 changer transitions 0/148 dead transitions. [2024-06-04 17:53:28,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 148 transitions, 1507 flow [2024-06-04 17:53:28,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 17:53:28,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 17:53:28,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-04 17:53:28,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.340625 [2024-06-04 17:53:28,977 INFO L175 Difference]: Start difference. First operand has 187 places, 133 transitions, 1175 flow. Second operand 10 states and 109 transitions. [2024-06-04 17:53:28,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 148 transitions, 1507 flow [2024-06-04 17:53:29,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 148 transitions, 1393 flow, removed 10 selfloop flow, removed 10 redundant places. [2024-06-04 17:53:29,104 INFO L231 Difference]: Finished difference. Result has 183 places, 133 transitions, 1183 flow [2024-06-04 17:53:29,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1061, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1183, PETRI_PLACES=183, PETRI_TRANSITIONS=133} [2024-06-04 17:53:29,104 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 152 predicate places. [2024-06-04 17:53:29,104 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 133 transitions, 1183 flow [2024-06-04 17:53:29,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:53:29,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:53:29,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:53:29,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-04 17:53:29,105 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)] === [2024-06-04 17:53:29,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:53:29,105 INFO L85 PathProgramCache]: Analyzing trace with hash 442218408, now seen corresponding path program 5 times [2024-06-04 17:53:29,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:53:29,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263486647] [2024-06-04 17:53:29,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:53:29,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:53:29,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:53:34,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:53:34,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:53:34,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263486647] [2024-06-04 17:53:34,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263486647] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:53:34,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:53:34,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 17:53:34,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62960774] [2024-06-04 17:53:34,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:53:34,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 17:53:34,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:53:34,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 17:53:34,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-04 17:53:34,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:53:34,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 133 transitions, 1183 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) [2024-06-04 17:53:34,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:53:34,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:53:34,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:53:35,276 INFO L124 PetriNetUnfolderBase]: 383/737 cut-off events. [2024-06-04 17:53:35,276 INFO L125 PetriNetUnfolderBase]: For 83454/83454 co-relation queries the response was YES. [2024-06-04 17:53:35,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5459 conditions, 737 events. 383/737 cut-off events. For 83454/83454 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3514 event pairs, 87 based on Foata normal form. 2/739 useless extension candidates. Maximal degree in co-relation 5369. Up to 666 conditions per place. [2024-06-04 17:53:35,284 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 120 selfloop transitions, 26 changer transitions 0/148 dead transitions. [2024-06-04 17:53:35,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 148 transitions, 1537 flow [2024-06-04 17:53:35,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 17:53:35,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 17:53:35,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-04 17:53:35,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.334375 [2024-06-04 17:53:35,286 INFO L175 Difference]: Start difference. First operand has 183 places, 133 transitions, 1183 flow. Second operand 10 states and 107 transitions. [2024-06-04 17:53:35,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 148 transitions, 1537 flow [2024-06-04 17:53:35,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 148 transitions, 1398 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-04 17:53:35,486 INFO L231 Difference]: Finished difference. Result has 183 places, 134 transitions, 1128 flow [2024-06-04 17:53:35,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1044, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1128, PETRI_PLACES=183, PETRI_TRANSITIONS=134} [2024-06-04 17:53:35,487 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 152 predicate places. [2024-06-04 17:53:35,487 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 134 transitions, 1128 flow [2024-06-04 17:53:35,487 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) [2024-06-04 17:53:35,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:53:35,488 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:53:35,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-04 17:53:35,502 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)] === [2024-06-04 17:53:35,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:53:35,503 INFO L85 PathProgramCache]: Analyzing trace with hash 442210472, now seen corresponding path program 29 times [2024-06-04 17:53:35,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:53:35,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579002703] [2024-06-04 17:53:35,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:53:35,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:53:35,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:53:40,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:53:40,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:53:40,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579002703] [2024-06-04 17:53:40,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579002703] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:53:40,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:53:40,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 17:53:40,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474926492] [2024-06-04 17:53:40,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:53:40,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 17:53:40,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:53:40,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 17:53:40,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-04 17:53:40,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:53:40,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 134 transitions, 1128 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) [2024-06-04 17:53:40,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:53:40,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:53:40,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:53:41,354 INFO L124 PetriNetUnfolderBase]: 399/773 cut-off events. [2024-06-04 17:53:41,354 INFO L125 PetriNetUnfolderBase]: For 104812/104812 co-relation queries the response was YES. [2024-06-04 17:53:41,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5491 conditions, 773 events. 399/773 cut-off events. For 104812/104812 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3770 event pairs, 91 based on Foata normal form. 10/783 useless extension candidates. Maximal degree in co-relation 5401. Up to 658 conditions per place. [2024-06-04 17:53:41,360 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 117 selfloop transitions, 24 changer transitions 11/154 dead transitions. [2024-06-04 17:53:41,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 154 transitions, 1492 flow [2024-06-04 17:53:41,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 17:53:41,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 17:53:41,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-04 17:53:41,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3380681818181818 [2024-06-04 17:53:41,361 INFO L175 Difference]: Start difference. First operand has 183 places, 134 transitions, 1128 flow. Second operand 11 states and 119 transitions. [2024-06-04 17:53:41,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 154 transitions, 1492 flow [2024-06-04 17:53:41,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 154 transitions, 1418 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-04 17:53:41,512 INFO L231 Difference]: Finished difference. Result has 186 places, 131 transitions, 1080 flow [2024-06-04 17:53:41,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1054, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1080, PETRI_PLACES=186, PETRI_TRANSITIONS=131} [2024-06-04 17:53:41,512 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 155 predicate places. [2024-06-04 17:53:41,513 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 131 transitions, 1080 flow [2024-06-04 17:53:41,513 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) [2024-06-04 17:53:41,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:53:41,513 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:53:41,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-04 17:53:41,513 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)] === [2024-06-04 17:53:41,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:53:41,513 INFO L85 PathProgramCache]: Analyzing trace with hash 442008662, now seen corresponding path program 30 times [2024-06-04 17:53:41,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:53:41,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270040354] [2024-06-04 17:53:41,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:53:41,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:53:41,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:53:46,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:53:46,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:53:46,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270040354] [2024-06-04 17:53:46,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270040354] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:53:46,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:53:46,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 17:53:46,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506042082] [2024-06-04 17:53:46,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:53:46,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 17:53:46,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:53:46,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 17:53:46,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-04 17:53:46,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:53:46,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 131 transitions, 1080 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) [2024-06-04 17:53:46,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:53:46,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:53:46,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:53:46,722 INFO L124 PetriNetUnfolderBase]: 389/759 cut-off events. [2024-06-04 17:53:46,723 INFO L125 PetriNetUnfolderBase]: For 107583/107583 co-relation queries the response was YES. [2024-06-04 17:53:46,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5398 conditions, 759 events. 389/759 cut-off events. For 107583/107583 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3694 event pairs, 91 based on Foata normal form. 10/769 useless extension candidates. Maximal degree in co-relation 5307. Up to 643 conditions per place. [2024-06-04 17:53:46,728 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 114 selfloop transitions, 24 changer transitions 11/151 dead transitions. [2024-06-04 17:53:46,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 151 transitions, 1438 flow [2024-06-04 17:53:46,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 17:53:46,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 17:53:46,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-04 17:53:46,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-04 17:53:46,729 INFO L175 Difference]: Start difference. First operand has 186 places, 131 transitions, 1080 flow. Second operand 11 states and 120 transitions. [2024-06-04 17:53:46,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 151 transitions, 1438 flow [2024-06-04 17:53:46,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 151 transitions, 1386 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-04 17:53:46,859 INFO L231 Difference]: Finished difference. Result has 184 places, 128 transitions, 1055 flow [2024-06-04 17:53:46,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1028, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1055, PETRI_PLACES=184, PETRI_TRANSITIONS=128} [2024-06-04 17:53:46,860 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 153 predicate places. [2024-06-04 17:53:46,860 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 128 transitions, 1055 flow [2024-06-04 17:53:46,860 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) [2024-06-04 17:53:46,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:53:46,860 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:53:46,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-04 17:53:46,861 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)] === [2024-06-04 17:53:46,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:53:46,861 INFO L85 PathProgramCache]: Analyzing trace with hash 442003082, now seen corresponding path program 31 times [2024-06-04 17:53:46,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:53:46,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987398980] [2024-06-04 17:53:46,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:53:46,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:53:46,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:53:51,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:53:51,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:53:51,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987398980] [2024-06-04 17:53:51,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987398980] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:53:51,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:53:51,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 17:53:51,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368735103] [2024-06-04 17:53:51,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:53:51,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 17:53:51,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:53:51,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 17:53:51,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-04 17:53:51,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:53:51,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 128 transitions, 1055 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) [2024-06-04 17:53:51,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:53:51,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:53:51,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:53:52,426 INFO L124 PetriNetUnfolderBase]: 377/739 cut-off events. [2024-06-04 17:53:52,426 INFO L125 PetriNetUnfolderBase]: For 99681/99681 co-relation queries the response was YES. [2024-06-04 17:53:52,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5273 conditions, 739 events. 377/739 cut-off events. For 99681/99681 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3585 event pairs, 79 based on Foata normal form. 8/747 useless extension candidates. Maximal degree in co-relation 5183. Up to 633 conditions per place. [2024-06-04 17:53:52,432 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 112 selfloop transitions, 22 changer transitions 11/147 dead transitions. [2024-06-04 17:53:52,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 147 transitions, 1397 flow [2024-06-04 17:53:52,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 17:53:52,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 17:53:52,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-04 17:53:52,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33238636363636365 [2024-06-04 17:53:52,433 INFO L175 Difference]: Start difference. First operand has 184 places, 128 transitions, 1055 flow. Second operand 11 states and 117 transitions. [2024-06-04 17:53:52,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 147 transitions, 1397 flow [2024-06-04 17:53:52,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 147 transitions, 1345 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-04 17:53:52,568 INFO L231 Difference]: Finished difference. Result has 182 places, 125 transitions, 1029 flow [2024-06-04 17:53:52,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1003, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1029, PETRI_PLACES=182, PETRI_TRANSITIONS=125} [2024-06-04 17:53:52,569 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 151 predicate places. [2024-06-04 17:53:52,569 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 125 transitions, 1029 flow [2024-06-04 17:53:52,569 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) [2024-06-04 17:53:52,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:53:52,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:53:52,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-04 17:53:52,570 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)] === [2024-06-04 17:53:52,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:53:52,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1405676022, now seen corresponding path program 6 times [2024-06-04 17:53:52,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:53:52,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324218663] [2024-06-04 17:53:52,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:53:52,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:53:52,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:53:58,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:53:58,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:53:58,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324218663] [2024-06-04 17:53:58,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324218663] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:53:58,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:53:58,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 17:53:58,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051528110] [2024-06-04 17:53:58,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:53:58,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 17:53:58,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:53:58,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 17:53:58,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 17:53:58,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:53:58,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 125 transitions, 1029 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) [2024-06-04 17:53:58,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:53:58,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:53:58,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:53:59,203 INFO L124 PetriNetUnfolderBase]: 369/719 cut-off events. [2024-06-04 17:53:59,203 INFO L125 PetriNetUnfolderBase]: For 88173/88173 co-relation queries the response was YES. [2024-06-04 17:53:59,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5426 conditions, 719 events. 369/719 cut-off events. For 88173/88173 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3446 event pairs, 89 based on Foata normal form. 2/721 useless extension candidates. Maximal degree in co-relation 5337. Up to 648 conditions per place. [2024-06-04 17:53:59,209 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 118 selfloop transitions, 21 changer transitions 0/141 dead transitions. [2024-06-04 17:53:59,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 141 transitions, 1531 flow [2024-06-04 17:53:59,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 17:53:59,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 17:53:59,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-04 17:53:59,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31875 [2024-06-04 17:53:59,210 INFO L175 Difference]: Start difference. First operand has 182 places, 125 transitions, 1029 flow. Second operand 10 states and 102 transitions. [2024-06-04 17:53:59,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 141 transitions, 1531 flow [2024-06-04 17:53:59,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 141 transitions, 1475 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-04 17:53:59,335 INFO L231 Difference]: Finished difference. Result has 177 places, 127 transitions, 1083 flow [2024-06-04 17:53:59,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=979, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1083, PETRI_PLACES=177, PETRI_TRANSITIONS=127} [2024-06-04 17:53:59,335 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 146 predicate places. [2024-06-04 17:53:59,335 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 127 transitions, 1083 flow [2024-06-04 17:53:59,335 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) [2024-06-04 17:53:59,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:53:59,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:53:59,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-04 17:53:59,336 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)] === [2024-06-04 17:53:59,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:53:59,336 INFO L85 PathProgramCache]: Analyzing trace with hash 636157818, now seen corresponding path program 7 times [2024-06-04 17:53:59,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:53:59,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218526909] [2024-06-04 17:53:59,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:53:59,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:53:59,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:54:04,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:54:04,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:54:04,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218526909] [2024-06-04 17:54:04,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218526909] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:54:04,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:54:04,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 17:54:04,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428891375] [2024-06-04 17:54:04,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:54:04,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 17:54:04,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:54:04,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 17:54:04,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 17:54:04,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:54:04,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 127 transitions, 1083 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) [2024-06-04 17:54:04,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:54:04,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:54:04,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:54:04,945 INFO L124 PetriNetUnfolderBase]: 373/727 cut-off events. [2024-06-04 17:54:04,945 INFO L125 PetriNetUnfolderBase]: For 83763/83763 co-relation queries the response was YES. [2024-06-04 17:54:04,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5448 conditions, 727 events. 373/727 cut-off events. For 83763/83763 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3501 event pairs, 90 based on Foata normal form. 2/729 useless extension candidates. Maximal degree in co-relation 5361. Up to 656 conditions per place. [2024-06-04 17:54:04,951 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 116 selfloop transitions, 24 changer transitions 0/142 dead transitions. [2024-06-04 17:54:04,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 142 transitions, 1429 flow [2024-06-04 17:54:04,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 17:54:04,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 17:54:04,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-04 17:54:04,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.328125 [2024-06-04 17:54:04,953 INFO L175 Difference]: Start difference. First operand has 177 places, 127 transitions, 1083 flow. Second operand 10 states and 105 transitions. [2024-06-04 17:54:04,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 142 transitions, 1429 flow [2024-06-04 17:54:05,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 142 transitions, 1377 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-04 17:54:05,100 INFO L231 Difference]: Finished difference. Result has 181 places, 128 transitions, 1115 flow [2024-06-04 17:54:05,100 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1031, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1115, PETRI_PLACES=181, PETRI_TRANSITIONS=128} [2024-06-04 17:54:05,100 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 150 predicate places. [2024-06-04 17:54:05,100 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 128 transitions, 1115 flow [2024-06-04 17:54:05,101 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) [2024-06-04 17:54:05,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:54:05,101 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:54:05,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-04 17:54:05,101 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)] === [2024-06-04 17:54:05,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:54:05,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1719384552, now seen corresponding path program 8 times [2024-06-04 17:54:05,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:54:05,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880577888] [2024-06-04 17:54:05,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:54:05,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:54:05,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:54:10,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:54:10,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:54:10,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880577888] [2024-06-04 17:54:10,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880577888] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:54:10,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:54:10,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 17:54:10,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483425872] [2024-06-04 17:54:10,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:54:10,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 17:54:10,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:54:10,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 17:54:10,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 17:54:10,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:54:10,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 128 transitions, 1115 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) [2024-06-04 17:54:10,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:54:10,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:54:10,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:54:10,704 INFO L124 PetriNetUnfolderBase]: 370/722 cut-off events. [2024-06-04 17:54:10,705 INFO L125 PetriNetUnfolderBase]: For 81546/81546 co-relation queries the response was YES. [2024-06-04 17:54:10,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5325 conditions, 722 events. 370/722 cut-off events. For 81546/81546 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3455 event pairs, 88 based on Foata normal form. 2/724 useless extension candidates. Maximal degree in co-relation 5236. Up to 670 conditions per place. [2024-06-04 17:54:10,712 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 118 selfloop transitions, 21 changer transitions 0/141 dead transitions. [2024-06-04 17:54:10,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 141 transitions, 1425 flow [2024-06-04 17:54:10,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 17:54:10,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 17:54:10,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 100 transitions. [2024-06-04 17:54:10,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-06-04 17:54:10,713 INFO L175 Difference]: Start difference. First operand has 181 places, 128 transitions, 1115 flow. Second operand 10 states and 100 transitions. [2024-06-04 17:54:10,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 141 transitions, 1425 flow [2024-06-04 17:54:10,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 141 transitions, 1327 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-04 17:54:10,856 INFO L231 Difference]: Finished difference. Result has 183 places, 128 transitions, 1064 flow [2024-06-04 17:54:10,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1017, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1064, PETRI_PLACES=183, PETRI_TRANSITIONS=128} [2024-06-04 17:54:10,856 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 152 predicate places. [2024-06-04 17:54:10,856 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 128 transitions, 1064 flow [2024-06-04 17:54:10,856 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) [2024-06-04 17:54:10,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:54:10,857 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:54:10,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-04 17:54:10,857 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)] === [2024-06-04 17:54:10,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:54:10,857 INFO L85 PathProgramCache]: Analyzing trace with hash 636149882, now seen corresponding path program 32 times [2024-06-04 17:54:10,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:54:10,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067937889] [2024-06-04 17:54:10,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:54:10,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:54:10,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:54:16,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:54:16,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:54:16,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067937889] [2024-06-04 17:54:16,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067937889] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:54:16,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:54:16,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 17:54:16,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453273816] [2024-06-04 17:54:16,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:54:16,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 17:54:16,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:54:16,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 17:54:16,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-04 17:54:16,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:54:16,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 128 transitions, 1064 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) [2024-06-04 17:54:16,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:54:16,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:54:16,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:54:16,543 INFO L124 PetriNetUnfolderBase]: 386/758 cut-off events. [2024-06-04 17:54:16,543 INFO L125 PetriNetUnfolderBase]: For 101777/101777 co-relation queries the response was YES. [2024-06-04 17:54:16,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5346 conditions, 758 events. 386/758 cut-off events. For 101777/101777 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3736 event pairs, 93 based on Foata normal form. 10/768 useless extension candidates. Maximal degree in co-relation 5256. Up to 643 conditions per place. [2024-06-04 17:54:16,549 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 113 selfloop transitions, 22 changer transitions 11/148 dead transitions. [2024-06-04 17:54:16,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 148 transitions, 1416 flow [2024-06-04 17:54:16,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 17:54:16,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 17:54:16,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-04 17:54:16,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33238636363636365 [2024-06-04 17:54:16,550 INFO L175 Difference]: Start difference. First operand has 183 places, 128 transitions, 1064 flow. Second operand 11 states and 117 transitions. [2024-06-04 17:54:16,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 148 transitions, 1416 flow [2024-06-04 17:54:16,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 148 transitions, 1371 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-04 17:54:16,711 INFO L231 Difference]: Finished difference. Result has 185 places, 125 transitions, 1039 flow [2024-06-04 17:54:16,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1019, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1039, PETRI_PLACES=185, PETRI_TRANSITIONS=125} [2024-06-04 17:54:16,712 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 154 predicate places. [2024-06-04 17:54:16,712 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 125 transitions, 1039 flow [2024-06-04 17:54:16,712 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) [2024-06-04 17:54:16,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:54:16,712 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:54:16,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-04 17:54:16,713 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)] === [2024-06-04 17:54:16,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:54:16,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1974955240, now seen corresponding path program 9 times [2024-06-04 17:54:16,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:54:16,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707714040] [2024-06-04 17:54:16,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:54:16,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:54:16,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:54:22,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:54:22,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:54:22,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707714040] [2024-06-04 17:54:22,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707714040] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:54:22,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:54:22,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 17:54:22,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682800660] [2024-06-04 17:54:22,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:54:22,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 17:54:22,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:54:22,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 17:54:22,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 17:54:22,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:54:22,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 125 transitions, 1039 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) [2024-06-04 17:54:22,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:54:22,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:54:22,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:54:23,336 INFO L124 PetriNetUnfolderBase]: 388/772 cut-off events. [2024-06-04 17:54:23,337 INFO L125 PetriNetUnfolderBase]: For 122617/122617 co-relation queries the response was YES. [2024-06-04 17:54:23,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5423 conditions, 772 events. 388/772 cut-off events. For 122617/122617 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3872 event pairs, 90 based on Foata normal form. 18/790 useless extension candidates. Maximal degree in co-relation 5332. Up to 622 conditions per place. [2024-06-04 17:54:23,343 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 103 selfloop transitions, 25 changer transitions 16/146 dead transitions. [2024-06-04 17:54:23,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 146 transitions, 1419 flow [2024-06-04 17:54:23,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 17:54:23,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 17:54:23,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-04 17:54:23,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33238636363636365 [2024-06-04 17:54:23,344 INFO L175 Difference]: Start difference. First operand has 185 places, 125 transitions, 1039 flow. Second operand 11 states and 117 transitions. [2024-06-04 17:54:23,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 146 transitions, 1419 flow [2024-06-04 17:54:23,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 146 transitions, 1371 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-04 17:54:23,463 INFO L231 Difference]: Finished difference. Result has 183 places, 120 transitions, 1002 flow [2024-06-04 17:54:23,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=991, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1002, PETRI_PLACES=183, PETRI_TRANSITIONS=120} [2024-06-04 17:54:23,464 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 152 predicate places. [2024-06-04 17:54:23,464 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 120 transitions, 1002 flow [2024-06-04 17:54:23,465 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) [2024-06-04 17:54:23,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:54:23,465 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:54:23,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-04 17:54:23,465 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)] === [2024-06-04 17:54:23,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:54:23,465 INFO L85 PathProgramCache]: Analyzing trace with hash 635948072, now seen corresponding path program 33 times [2024-06-04 17:54:23,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:54:23,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824943753] [2024-06-04 17:54:23,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:54:23,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:54:23,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:54:28,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:54:28,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:54:28,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824943753] [2024-06-04 17:54:28,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824943753] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:54:28,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:54:28,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 17:54:28,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267855795] [2024-06-04 17:54:28,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:54:28,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 17:54:28,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:54:28,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 17:54:28,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-04 17:54:28,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:54:28,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 120 transitions, 1002 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) [2024-06-04 17:54:28,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:54:28,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:54:28,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:54:29,530 INFO L124 PetriNetUnfolderBase]: 362/722 cut-off events. [2024-06-04 17:54:29,531 INFO L125 PetriNetUnfolderBase]: For 101689/101689 co-relation queries the response was YES. [2024-06-04 17:54:29,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5162 conditions, 722 events. 362/722 cut-off events. For 101689/101689 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3543 event pairs, 91 based on Foata normal form. 10/732 useless extension candidates. Maximal degree in co-relation 5072. Up to 598 conditions per place. [2024-06-04 17:54:29,538 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 103 selfloop transitions, 24 changer transitions 11/140 dead transitions. [2024-06-04 17:54:29,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 140 transitions, 1338 flow [2024-06-04 17:54:29,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 17:54:29,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 17:54:29,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-04 17:54:29,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3352272727272727 [2024-06-04 17:54:29,539 INFO L175 Difference]: Start difference. First operand has 183 places, 120 transitions, 1002 flow. Second operand 11 states and 118 transitions. [2024-06-04 17:54:29,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 140 transitions, 1338 flow [2024-06-04 17:54:29,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 140 transitions, 1282 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-04 17:54:29,696 INFO L231 Difference]: Finished difference. Result has 179 places, 117 transitions, 973 flow [2024-06-04 17:54:29,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=946, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=973, PETRI_PLACES=179, PETRI_TRANSITIONS=117} [2024-06-04 17:54:29,696 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 148 predicate places. [2024-06-04 17:54:29,697 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 117 transitions, 973 flow [2024-06-04 17:54:29,697 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) [2024-06-04 17:54:29,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:54:29,697 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:54:29,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-04 17:54:29,697 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)] === [2024-06-04 17:54:29,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:54:29,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1719651958, now seen corresponding path program 34 times [2024-06-04 17:54:29,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:54:29,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079441989] [2024-06-04 17:54:29,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:54:29,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:54:29,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:54:35,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:54:35,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:54:35,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079441989] [2024-06-04 17:54:35,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079441989] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:54:35,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:54:35,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 17:54:35,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230903003] [2024-06-04 17:54:35,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:54:35,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 17:54:35,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:54:35,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 17:54:35,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 17:54:35,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:54:35,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 117 transitions, 973 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) [2024-06-04 17:54:35,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:54:35,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:54:35,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:54:35,501 INFO L124 PetriNetUnfolderBase]: 354/710 cut-off events. [2024-06-04 17:54:35,501 INFO L125 PetriNetUnfolderBase]: For 95903/95903 co-relation queries the response was YES. [2024-06-04 17:54:35,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5022 conditions, 710 events. 354/710 cut-off events. For 95903/95903 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3474 event pairs, 88 based on Foata normal form. 10/720 useless extension candidates. Maximal degree in co-relation 4934. Up to 614 conditions per place. [2024-06-04 17:54:35,506 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 104 selfloop transitions, 18 changer transitions 12/136 dead transitions. [2024-06-04 17:54:35,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 136 transitions, 1297 flow [2024-06-04 17:54:35,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 17:54:35,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 17:54:35,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 112 transitions. [2024-06-04 17:54:35,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3181818181818182 [2024-06-04 17:54:35,507 INFO L175 Difference]: Start difference. First operand has 179 places, 117 transitions, 973 flow. Second operand 11 states and 112 transitions. [2024-06-04 17:54:35,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 136 transitions, 1297 flow [2024-06-04 17:54:35,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 136 transitions, 1245 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-04 17:54:35,630 INFO L231 Difference]: Finished difference. Result has 177 places, 113 transitions, 923 flow [2024-06-04 17:54:35,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=921, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=923, PETRI_PLACES=177, PETRI_TRANSITIONS=113} [2024-06-04 17:54:35,630 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 146 predicate places. [2024-06-04 17:54:35,630 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 113 transitions, 923 flow [2024-06-04 17:54:35,631 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) [2024-06-04 17:54:35,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:54:35,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:54:35,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-04 17:54:35,631 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)] === [2024-06-04 17:54:35,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:54:35,631 INFO L85 PathProgramCache]: Analyzing trace with hash 635942492, now seen corresponding path program 35 times [2024-06-04 17:54:35,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:54:35,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660331875] [2024-06-04 17:54:35,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:54:35,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:54:35,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:54:40,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:54:40,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:54:40,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660331875] [2024-06-04 17:54:40,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660331875] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:54:40,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:54:40,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 17:54:40,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231107541] [2024-06-04 17:54:40,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:54:40,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 17:54:40,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:54:40,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 17:54:40,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-04 17:54:41,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:54:41,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 113 transitions, 923 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) [2024-06-04 17:54:41,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:54:41,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:54:41,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:54:41,650 INFO L124 PetriNetUnfolderBase]: 367/745 cut-off events. [2024-06-04 17:54:41,651 INFO L125 PetriNetUnfolderBase]: For 109935/109935 co-relation queries the response was YES. [2024-06-04 17:54:41,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5651 conditions, 745 events. 367/745 cut-off events. For 109935/109935 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3751 event pairs, 98 based on Foata normal form. 8/753 useless extension candidates. Maximal degree in co-relation 5564. Up to 566 conditions per place. [2024-06-04 17:54:41,657 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 105 selfloop transitions, 22 changer transitions 8/137 dead transitions. [2024-06-04 17:54:41,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 137 transitions, 1395 flow [2024-06-04 17:54:41,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 17:54:41,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 17:54:41,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-04 17:54:41,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-04 17:54:41,658 INFO L175 Difference]: Start difference. First operand has 177 places, 113 transitions, 923 flow. Second operand 11 states and 120 transitions. [2024-06-04 17:54:41,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 137 transitions, 1395 flow [2024-06-04 17:54:41,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 137 transitions, 1351 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-04 17:54:41,769 INFO L231 Difference]: Finished difference. Result has 175 places, 110 transitions, 907 flow [2024-06-04 17:54:41,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=883, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=907, PETRI_PLACES=175, PETRI_TRANSITIONS=110} [2024-06-04 17:54:41,769 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 144 predicate places. [2024-06-04 17:54:41,769 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 110 transitions, 907 flow [2024-06-04 17:54:41,769 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) [2024-06-04 17:54:41,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:54:41,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:54:41,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-04 17:54:41,770 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)] === [2024-06-04 17:54:41,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:54:41,770 INFO L85 PathProgramCache]: Analyzing trace with hash 643567128, now seen corresponding path program 10 times [2024-06-04 17:54:41,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:54:41,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262686722] [2024-06-04 17:54:41,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:54:41,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:54:41,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:54:46,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:54:46,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:54:46,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262686722] [2024-06-04 17:54:46,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262686722] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:54:46,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:54:46,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 17:54:46,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935789658] [2024-06-04 17:54:46,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:54:46,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 17:54:46,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:54:46,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 17:54:46,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 17:54:47,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:54:47,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 110 transitions, 907 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:54:47,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:54:47,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:54:47,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:54:47,506 INFO L124 PetriNetUnfolderBase]: 352/712 cut-off events. [2024-06-04 17:54:47,506 INFO L125 PetriNetUnfolderBase]: For 94795/94795 co-relation queries the response was YES. [2024-06-04 17:54:47,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5576 conditions, 712 events. 352/712 cut-off events. For 94795/94795 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3521 event pairs, 104 based on Foata normal form. 2/714 useless extension candidates. Maximal degree in co-relation 5490. Up to 641 conditions per place. [2024-06-04 17:54:47,512 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 99 selfloop transitions, 23 changer transitions 0/124 dead transitions. [2024-06-04 17:54:47,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 124 transitions, 1215 flow [2024-06-04 17:54:47,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 17:54:47,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 17:54:47,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-04 17:54:47,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31875 [2024-06-04 17:54:47,513 INFO L175 Difference]: Start difference. First operand has 175 places, 110 transitions, 907 flow. Second operand 10 states and 102 transitions. [2024-06-04 17:54:47,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 124 transitions, 1215 flow [2024-06-04 17:54:47,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 124 transitions, 1167 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-04 17:54:47,616 INFO L231 Difference]: Finished difference. Result has 171 places, 111 transitions, 943 flow [2024-06-04 17:54:47,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=859, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=943, PETRI_PLACES=171, PETRI_TRANSITIONS=111} [2024-06-04 17:54:47,616 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 140 predicate places. [2024-06-04 17:54:47,616 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 111 transitions, 943 flow [2024-06-04 17:54:47,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:54:47,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:54:47,617 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:54:47,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-04 17:54:47,617 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)] === [2024-06-04 17:54:47,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:54:47,617 INFO L85 PathProgramCache]: Analyzing trace with hash 571401534, now seen corresponding path program 11 times [2024-06-04 17:54:47,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:54:47,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794630122] [2024-06-04 17:54:47,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:54:47,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:54:47,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:54:53,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:54:53,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:54:53,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794630122] [2024-06-04 17:54:53,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794630122] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:54:53,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:54:53,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 17:54:53,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463424378] [2024-06-04 17:54:53,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:54:53,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 17:54:53,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:54:53,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 17:54:53,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-04 17:54:53,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:54:53,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 111 transitions, 943 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:54:53,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:54:53,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:54:53,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:54:53,953 INFO L124 PetriNetUnfolderBase]: 356/720 cut-off events. [2024-06-04 17:54:53,953 INFO L125 PetriNetUnfolderBase]: For 89611/89611 co-relation queries the response was YES. [2024-06-04 17:54:53,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5596 conditions, 720 events. 356/720 cut-off events. For 89611/89611 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3576 event pairs, 106 based on Foata normal form. 2/722 useless extension candidates. Maximal degree in co-relation 5512. Up to 623 conditions per place. [2024-06-04 17:54:53,958 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 97 selfloop transitions, 26 changer transitions 0/125 dead transitions. [2024-06-04 17:54:53,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 125 transitions, 1253 flow [2024-06-04 17:54:53,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 17:54:53,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 17:54:53,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 103 transitions. [2024-06-04 17:54:53,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.321875 [2024-06-04 17:54:53,960 INFO L175 Difference]: Start difference. First operand has 171 places, 111 transitions, 943 flow. Second operand 10 states and 103 transitions. [2024-06-04 17:54:53,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 125 transitions, 1253 flow [2024-06-04 17:54:54,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 125 transitions, 1179 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-04 17:54:54,072 INFO L231 Difference]: Finished difference. Result has 173 places, 112 transitions, 961 flow [2024-06-04 17:54:54,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=869, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=961, PETRI_PLACES=173, PETRI_TRANSITIONS=112} [2024-06-04 17:54:54,072 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 142 predicate places. [2024-06-04 17:54:54,072 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 112 transitions, 961 flow [2024-06-04 17:54:54,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 17:54:54,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:54:54,073 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:54:54,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-04 17:54:54,073 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)] === [2024-06-04 17:54:54,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:54:54,073 INFO L85 PathProgramCache]: Analyzing trace with hash 643299722, now seen corresponding path program 36 times [2024-06-04 17:54:54,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:54:54,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850609516] [2024-06-04 17:54:54,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:54:54,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:54:54,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:54:59,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:54:59,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:54:59,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850609516] [2024-06-04 17:54:59,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850609516] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:54:59,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:54:59,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 17:54:59,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108040765] [2024-06-04 17:54:59,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:54:59,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 17:54:59,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:54:59,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 17:54:59,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 17:55:00,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:55:00,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 112 transitions, 961 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) [2024-06-04 17:55:00,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:55:00,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:55:00,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:55:00,478 INFO L124 PetriNetUnfolderBase]: 343/697 cut-off events. [2024-06-04 17:55:00,479 INFO L125 PetriNetUnfolderBase]: For 88151/88151 co-relation queries the response was YES. [2024-06-04 17:55:00,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4931 conditions, 697 events. 343/697 cut-off events. For 88151/88151 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3453 event pairs, 91 based on Foata normal form. 10/707 useless extension candidates. Maximal degree in co-relation 4846. Up to 576 conditions per place. [2024-06-04 17:55:00,484 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 98 selfloop transitions, 22 changer transitions 9/131 dead transitions. [2024-06-04 17:55:00,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 131 transitions, 1275 flow [2024-06-04 17:55:00,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 17:55:00,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 17:55:00,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-04 17:55:00,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32670454545454547 [2024-06-04 17:55:00,486 INFO L175 Difference]: Start difference. First operand has 173 places, 112 transitions, 961 flow. Second operand 11 states and 115 transitions. [2024-06-04 17:55:00,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 131 transitions, 1275 flow [2024-06-04 17:55:00,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 131 transitions, 1193 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-04 17:55:00,609 INFO L231 Difference]: Finished difference. Result has 176 places, 109 transitions, 899 flow [2024-06-04 17:55:00,609 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=879, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=899, PETRI_PLACES=176, PETRI_TRANSITIONS=109} [2024-06-04 17:55:00,609 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 145 predicate places. [2024-06-04 17:55:00,609 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 109 transitions, 899 flow [2024-06-04 17:55:00,610 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) [2024-06-04 17:55:00,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:55:00,610 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:55:00,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-04 17:55:00,610 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)] === [2024-06-04 17:55:00,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:55:00,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1710120822, now seen corresponding path program 12 times [2024-06-04 17:55:00,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:55:00,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850564688] [2024-06-04 17:55:00,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:55:00,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:55:00,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:55:06,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:55:06,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:55:06,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850564688] [2024-06-04 17:55:06,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850564688] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:55:06,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:55:06,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 17:55:06,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848314910] [2024-06-04 17:55:06,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:55:06,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 17:55:06,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:55:06,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 17:55:06,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 17:55:06,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:55:06,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 109 transitions, 899 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) [2024-06-04 17:55:06,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:55:06,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:55:06,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:55:06,778 INFO L124 PetriNetUnfolderBase]: 314/642 cut-off events. [2024-06-04 17:55:06,778 INFO L125 PetriNetUnfolderBase]: For 69913/69913 co-relation queries the response was YES. [2024-06-04 17:55:06,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4546 conditions, 642 events. 314/642 cut-off events. For 69913/69913 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3100 event pairs, 70 based on Foata normal form. 2/644 useless extension candidates. Maximal degree in co-relation 4460. Up to 596 conditions per place. [2024-06-04 17:55:06,784 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 106 selfloop transitions, 15 changer transitions 0/123 dead transitions. [2024-06-04 17:55:06,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 123 transitions, 1205 flow [2024-06-04 17:55:06,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 17:55:06,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 17:55:06,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 97 transitions. [2024-06-04 17:55:06,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.303125 [2024-06-04 17:55:06,786 INFO L175 Difference]: Start difference. First operand has 176 places, 109 transitions, 899 flow. Second operand 10 states and 97 transitions. [2024-06-04 17:55:06,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 123 transitions, 1205 flow [2024-06-04 17:55:06,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 123 transitions, 1155 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-04 17:55:06,947 INFO L231 Difference]: Finished difference. Result has 172 places, 110 transitions, 921 flow [2024-06-04 17:55:06,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=849, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=921, PETRI_PLACES=172, PETRI_TRANSITIONS=110} [2024-06-04 17:55:06,948 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 141 predicate places. [2024-06-04 17:55:06,948 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 110 transitions, 921 flow [2024-06-04 17:55:06,948 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) [2024-06-04 17:55:06,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:55:06,948 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:55:06,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-04 17:55:06,949 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)] === [2024-06-04 17:55:06,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:55:06,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1155170754, now seen corresponding path program 37 times [2024-06-04 17:55:06,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:55:06,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524929193] [2024-06-04 17:55:06,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:55:06,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:55:07,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:55:11,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:55:11,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:55:11,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524929193] [2024-06-04 17:55:11,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524929193] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:55:11,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:55:11,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 17:55:11,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504647259] [2024-06-04 17:55:11,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:55:11,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 17:55:11,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:55:11,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 17:55:11,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-04 17:55:11,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 17:55:11,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 110 transitions, 921 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) [2024-06-04 17:55:11,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 17:55:11,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 17:55:11,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 17:55:12,303 INFO L124 PetriNetUnfolderBase]: 326/670 cut-off events. [2024-06-04 17:55:12,304 INFO L125 PetriNetUnfolderBase]: For 79707/79707 co-relation queries the response was YES. [2024-06-04 17:55:12,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4581 conditions, 670 events. 326/670 cut-off events. For 79707/79707 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3297 event pairs, 71 based on Foata normal form. 8/678 useless extension candidates. Maximal degree in co-relation 4496. Up to 480 conditions per place. [2024-06-04 17:55:12,309 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 97 selfloop transitions, 27 changer transitions 7/133 dead transitions. [2024-06-04 17:55:12,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 133 transitions, 1375 flow [2024-06-04 17:55:12,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 17:55:12,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 17:55:12,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-04 17:55:12,310 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3380681818181818 [2024-06-04 17:55:12,310 INFO L175 Difference]: Start difference. First operand has 172 places, 110 transitions, 921 flow. Second operand 11 states and 119 transitions. [2024-06-04 17:55:12,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 133 transitions, 1375 flow [2024-06-04 17:55:12,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 133 transitions, 1313 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-04 17:55:12,392 INFO L231 Difference]: Finished difference. Result has 175 places, 108 transitions, 901 flow [2024-06-04 17:55:12,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=859, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=901, PETRI_PLACES=175, PETRI_TRANSITIONS=108} [2024-06-04 17:55:12,393 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 144 predicate places. [2024-06-04 17:55:12,393 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 108 transitions, 901 flow [2024-06-04 17:55:12,393 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) [2024-06-04 17:55:12,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 17:55:12,393 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 17:55:12,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-04 17:55:12,393 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)] === [2024-06-04 17:55:12,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 17:55:12,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1975164986, now seen corresponding path program 38 times [2024-06-04 17:55:12,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 17:55:12,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654878645] [2024-06-04 17:55:12,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 17:55:12,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 17:55:12,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 17:55:16,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 17:55:16,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 17:55:16,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654878645] [2024-06-04 17:55:16,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654878645] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 17:55:16,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 17:55:16,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 17:55:16,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866061691] [2024-06-04 17:55:16,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 17:55:16,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 17:55:16,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 17:55:16,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 17:55:16,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 Killed by 15