./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix051_tso.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix051_tso.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix051_tso.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix051_tso.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-7724a2d-m [2024-06-27 23:54:57,396 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 23:54:57,468 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 23:54:57,472 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 23:54:57,472 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 23:54:57,495 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 23:54:57,497 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 23:54:57,497 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 23:54:57,497 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 23:54:57,500 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 23:54:57,501 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 23:54:57,501 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 23:54:57,502 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 23:54:57,503 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 23:54:57,503 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 23:54:57,503 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 23:54:57,504 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 23:54:57,504 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 23:54:57,504 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 23:54:57,504 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 23:54:57,504 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 23:54:57,505 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 23:54:57,505 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 23:54:57,505 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 23:54:57,506 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 23:54:57,506 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 23:54:57,506 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 23:54:57,506 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 23:54:57,507 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 23:54:57,507 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 23:54:57,508 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 23:54:57,508 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 23:54:57,508 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 23:54:57,508 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 23:54:57,509 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 23:54:57,509 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 23:54:57,509 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 23:54:57,509 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 23:54:57,509 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 23:54:57,510 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 23:54:57,510 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 23:54:57,510 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 23:54:57,510 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 23:54:57,510 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-27 23:54:57,732 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 23:54:57,754 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 23:54:57,756 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 23:54:57,757 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 23:54:57,757 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 23:54:57,758 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix051_tso.oepc.i [2024-06-27 23:54:58,944 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 23:54:59,158 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 23:54:59,158 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix051_tso.oepc.i [2024-06-27 23:54:59,175 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2fc691d6/afb00a1b7ba549eaac67e900eeae0c38/FLAG596cb0a69 [2024-06-27 23:54:59,188 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2fc691d6/afb00a1b7ba549eaac67e900eeae0c38 [2024-06-27 23:54:59,190 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 23:54:59,191 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 23:54:59,191 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix051_tso.oepc.yml/witness.yml [2024-06-27 23:54:59,258 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 23:54:59,259 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 23:54:59,260 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 23:54:59,260 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 23:54:59,263 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 23:54:59,264 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 11:54:59" (1/2) ... [2024-06-27 23:54:59,264 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54c70010 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:54:59, skipping insertion in model container [2024-06-27 23:54:59,265 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 11:54:59" (1/2) ... [2024-06-27 23:54:59,266 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@cf7a3fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:54:59, skipping insertion in model container [2024-06-27 23:54:59,266 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:54:59" (2/2) ... [2024-06-27 23:54:59,266 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54c70010 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:54:59, skipping insertion in model container [2024-06-27 23:54:59,266 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:54:59" (2/2) ... [2024-06-27 23:54:59,266 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 23:54:59,287 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 23:54:59,289 INFO L97 edCorrectnessWitness]: Location invariant before [L851-L851] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL && (0LL - (long long )__unbuffered_p2_EAX) + (long long )z >= 0LL) && (0LL - (long long )__unbuffered_p3_EAX) + (long long )a >= 0LL) && (0LL - (long long )x$r_buff0_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )weak$$choice2 >= 0LL) && (1LL - (long long )x) + (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )x) + (long long )x$w_buff0 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p3_EAX >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EAX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX) - (long long )__unbuffered_p3_EAX >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) - (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) - (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) - (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) - (long long )x$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) - (long long )x$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) - (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) - (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) - (long long )x$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) - (long long )x$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) - (long long )x$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p3_EAX) - (long long )a >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$r_buff1_thd2 >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff1_used >= 0LL) && (long long )x$r_buff1_thd2 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff0_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1 >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0_used - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff1 - (long long )x$w_buff1_used >= 0LL) [2024-06-27 23:54:59,289 INFO L97 edCorrectnessWitness]: Location invariant before [L855-L855] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL && (0LL - (long long )__unbuffered_p2_EAX) + (long long )z >= 0LL) && (0LL - (long long )__unbuffered_p3_EAX) + (long long )a >= 0LL) && (0LL - (long long )x$r_buff0_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )weak$$choice2 >= 0LL) && (1LL - (long long )x) + (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )x) + (long long )x$w_buff0 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p3_EAX >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EAX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX) - (long long )__unbuffered_p3_EAX >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) - (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) - (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) - (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) - (long long )x$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) - (long long )x$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) - (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) - (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) - (long long )x$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) - (long long )x$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) - (long long )x$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p3_EAX) - (long long )a >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$r_buff1_thd2 >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff1_used >= 0LL) && (long long )x$r_buff1_thd2 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff0_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1 >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0_used - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff1 - (long long )x$w_buff1_used >= 0LL) [2024-06-27 23:54:59,289 INFO L97 edCorrectnessWitness]: Location invariant before [L853-L853] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL && (0LL - (long long )__unbuffered_p2_EAX) + (long long )z >= 0LL) && (0LL - (long long )__unbuffered_p3_EAX) + (long long )a >= 0LL) && (0LL - (long long )x$r_buff0_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )weak$$choice2 >= 0LL) && (1LL - (long long )x) + (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )x) + (long long )x$w_buff0 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p3_EAX >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EAX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX) - (long long )__unbuffered_p3_EAX >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) - (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) - (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) - (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) - (long long )x$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) - (long long )x$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) - (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) - (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) - (long long )x$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) - (long long )x$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) - (long long )x$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p3_EAX) - (long long )a >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$r_buff1_thd2 >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff1_used >= 0LL) && (long long )x$r_buff1_thd2 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff0_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1 >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0_used - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff1 - (long long )x$w_buff1_used >= 0LL) [2024-06-27 23:54:59,289 INFO L97 edCorrectnessWitness]: Location invariant before [L856-L856] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL && (0LL - (long long )__unbuffered_p2_EAX) + (long long )z >= 0LL) && (0LL - (long long )__unbuffered_p3_EAX) + (long long )a >= 0LL) && (0LL - (long long )x$r_buff0_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )weak$$choice2 >= 0LL) && (1LL - (long long )x) + (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )x) + (long long )x$w_buff0 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p3_EAX >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EAX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX) - (long long )__unbuffered_p3_EAX >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) - (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) - (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) - (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) - (long long )x$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) - (long long )x$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) - (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) - (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) - (long long )x$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) - (long long )x$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) - (long long )x$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p3_EAX) - (long long )a >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$r_buff1_thd2 >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff1_used >= 0LL) && (long long )x$r_buff1_thd2 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff0_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1 >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0_used - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff1 - (long long )x$w_buff1_used >= 0LL) [2024-06-27 23:54:59,290 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 23:54:59,290 INFO L106 edCorrectnessWitness]: ghost_update [L849-L849] multithreaded = 1; [2024-06-27 23:54:59,331 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 23:54:59,600 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 23:54:59,612 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 23:54:59,801 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 23:54:59,830 INFO L206 MainTranslator]: Completed translation [2024-06-27 23:54:59,830 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:54:59 WrapperNode [2024-06-27 23:54:59,831 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 23:54:59,831 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 23:54:59,831 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 23:54:59,832 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 23:54:59,836 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:54:59" (1/1) ... [2024-06-27 23:54:59,866 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:54:59" (1/1) ... [2024-06-27 23:54:59,899 INFO L138 Inliner]: procedures = 176, calls = 52, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 157 [2024-06-27 23:54:59,901 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 23:54:59,901 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 23:54:59,902 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 23:54:59,902 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 23:54:59,910 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:54:59" (1/1) ... [2024-06-27 23:54:59,910 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:54:59" (1/1) ... [2024-06-27 23:54:59,925 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:54:59" (1/1) ... [2024-06-27 23:54:59,943 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-27 23:54:59,947 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:54:59" (1/1) ... [2024-06-27 23:54:59,952 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:54:59" (1/1) ... [2024-06-27 23:54:59,962 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:54:59" (1/1) ... [2024-06-27 23:54:59,970 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:54:59" (1/1) ... [2024-06-27 23:54:59,974 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:54:59" (1/1) ... [2024-06-27 23:54:59,979 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:54:59" (1/1) ... [2024-06-27 23:54:59,984 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 23:54:59,987 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 23:54:59,987 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 23:54:59,987 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 23:54:59,988 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:54:59" (1/1) ... [2024-06-27 23:54:59,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 23:54:59,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 23:55:00,030 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-27 23:55:00,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-27 23:55:00,060 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 23:55:00,061 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 23:55:00,061 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 23:55:00,061 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 23:55:00,061 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 23:55:00,062 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 23:55:00,062 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 23:55:00,062 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 23:55:00,062 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-27 23:55:00,062 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-27 23:55:00,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 23:55:00,063 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 23:55:00,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 23:55:00,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 23:55:00,064 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 23:55:00,196 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 23:55:00,198 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 23:55:00,712 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 23:55:00,712 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 23:55:00,908 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 23:55:00,908 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 23:55:00,909 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 11:55:00 BoogieIcfgContainer [2024-06-27 23:55:00,909 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 23:55:00,911 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 23:55:00,911 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 23:55:00,914 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 23:55:00,914 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 11:54:59" (1/4) ... [2024-06-27 23:55:00,914 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3008b35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 11:55:00, skipping insertion in model container [2024-06-27 23:55:00,915 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:54:59" (2/4) ... [2024-06-27 23:55:00,916 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3008b35 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 11:55:00, skipping insertion in model container [2024-06-27 23:55:00,917 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:54:59" (3/4) ... [2024-06-27 23:55:00,917 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3008b35 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 11:55:00, skipping insertion in model container [2024-06-27 23:55:00,917 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 11:55:00" (4/4) ... [2024-06-27 23:55:00,918 INFO L112 eAbstractionObserver]: Analyzing ICFG mix051_tso.oepc.i [2024-06-27 23:55:00,930 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 23:55:00,931 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-27 23:55:00,931 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 23:55:00,977 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 23:55:01,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 64 places, 51 transitions, 118 flow [2024-06-27 23:55:01,042 INFO L124 PetriNetUnfolderBase]: 0/47 cut-off events. [2024-06-27 23:55:01,043 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 23:55:01,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 47 events. 0/47 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 87 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-27 23:55:01,044 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 51 transitions, 118 flow [2024-06-27 23:55:01,047 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 41 transitions, 94 flow [2024-06-27 23:55:01,057 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 23:55:01,063 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;@267799a4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 23:55:01,063 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-27 23:55:01,067 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 23:55:01,067 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 23:55:01,067 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 23:55:01,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:55:01,068 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 23:55:01,068 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:55:01,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:55:01,075 INFO L85 PathProgramCache]: Analyzing trace with hash 400202035, now seen corresponding path program 1 times [2024-06-27 23:55:01,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:55:01,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891008014] [2024-06-27 23:55:01,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:55:01,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:55:01,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:55:02,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:55:02,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:55:02,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891008014] [2024-06-27 23:55:02,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891008014] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:55:02,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:55:02,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 23:55:02,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969100161] [2024-06-27 23:55:02,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:55:02,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 23:55:02,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:55:02,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 23:55:02,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 23:55:02,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 51 [2024-06-27 23:55:02,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 41 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:55:02,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:55:02,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 51 [2024-06-27 23:55:02,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:55:03,760 INFO L124 PetriNetUnfolderBase]: 8192/11588 cut-off events. [2024-06-27 23:55:03,761 INFO L125 PetriNetUnfolderBase]: For 184/184 co-relation queries the response was YES. [2024-06-27 23:55:03,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23151 conditions, 11588 events. 8192/11588 cut-off events. For 184/184 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 63990 event pairs, 6310 based on Foata normal form. 1/11373 useless extension candidates. Maximal degree in co-relation 23138. Up to 11172 conditions per place. [2024-06-27 23:55:03,824 INFO L140 encePairwiseOnDemand]: 42/51 looper letters, 42 selfloop transitions, 5 changer transitions 0/55 dead transitions. [2024-06-27 23:55:03,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 55 transitions, 225 flow [2024-06-27 23:55:03,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 23:55:03,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 23:55:03,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2024-06-27 23:55:03,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6078431372549019 [2024-06-27 23:55:03,835 INFO L175 Difference]: Start difference. First operand has 54 places, 41 transitions, 94 flow. Second operand 3 states and 93 transitions. [2024-06-27 23:55:03,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 55 transitions, 225 flow [2024-06-27 23:55:03,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 55 transitions, 218 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-27 23:55:03,842 INFO L231 Difference]: Finished difference. Result has 53 places, 45 transitions, 129 flow [2024-06-27 23:55:03,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=129, PETRI_PLACES=53, PETRI_TRANSITIONS=45} [2024-06-27 23:55:03,846 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -1 predicate places. [2024-06-27 23:55:03,846 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 45 transitions, 129 flow [2024-06-27 23:55:03,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:55:03,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:55:03,847 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:55:03,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 23:55:03,847 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:55:03,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:55:03,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1952851310, now seen corresponding path program 1 times [2024-06-27 23:55:03,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:55:03,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258810007] [2024-06-27 23:55:03,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:55:03,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:55:03,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:55:04,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:55:04,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:55:04,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258810007] [2024-06-27 23:55:04,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258810007] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:55:04,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:55:04,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 23:55:04,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657648088] [2024-06-27 23:55:04,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:55:04,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 23:55:04,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:55:04,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 23:55:04,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 23:55:04,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-06-27 23:55:04,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 45 transitions, 129 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:55:04,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:55:04,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-06-27 23:55:04,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:55:06,125 INFO L124 PetriNetUnfolderBase]: 9577/13187 cut-off events. [2024-06-27 23:55:06,126 INFO L125 PetriNetUnfolderBase]: For 2471/2471 co-relation queries the response was YES. [2024-06-27 23:55:06,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30036 conditions, 13187 events. 9577/13187 cut-off events. For 2471/2471 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 70148 event pairs, 6775 based on Foata normal form. 4/13158 useless extension candidates. Maximal degree in co-relation 30024. Up to 12982 conditions per place. [2024-06-27 23:55:06,183 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 53 selfloop transitions, 9 changer transitions 0/69 dead transitions. [2024-06-27 23:55:06,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 69 transitions, 319 flow [2024-06-27 23:55:06,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 23:55:06,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 23:55:06,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 118 transitions. [2024-06-27 23:55:06,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5784313725490197 [2024-06-27 23:55:06,185 INFO L175 Difference]: Start difference. First operand has 53 places, 45 transitions, 129 flow. Second operand 4 states and 118 transitions. [2024-06-27 23:55:06,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 69 transitions, 319 flow [2024-06-27 23:55:06,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 69 transitions, 314 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 23:55:06,187 INFO L231 Difference]: Finished difference. Result has 56 places, 49 transitions, 177 flow [2024-06-27 23:55:06,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=177, PETRI_PLACES=56, PETRI_TRANSITIONS=49} [2024-06-27 23:55:06,188 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 2 predicate places. [2024-06-27 23:55:06,188 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 49 transitions, 177 flow [2024-06-27 23:55:06,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:55:06,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:55:06,189 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:55:06,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 23:55:06,189 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:55:06,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:55:06,190 INFO L85 PathProgramCache]: Analyzing trace with hash -408846852, now seen corresponding path program 1 times [2024-06-27 23:55:06,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:55:06,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191897405] [2024-06-27 23:55:06,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:55:06,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:55:06,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:55:06,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:55:06,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:55:06,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191897405] [2024-06-27 23:55:06,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191897405] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:55:06,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:55:06,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 23:55:06,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977387055] [2024-06-27 23:55:06,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:55:06,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 23:55:06,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:55:06,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 23:55:06,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 23:55:06,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-06-27 23:55:07,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 49 transitions, 177 flow. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:55:07,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:55:07,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-06-27 23:55:07,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:55:08,462 INFO L124 PetriNetUnfolderBase]: 9557/13165 cut-off events. [2024-06-27 23:55:08,462 INFO L125 PetriNetUnfolderBase]: For 7067/7067 co-relation queries the response was YES. [2024-06-27 23:55:08,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33389 conditions, 13165 events. 9557/13165 cut-off events. For 7067/7067 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 70104 event pairs, 5407 based on Foata normal form. 8/13140 useless extension candidates. Maximal degree in co-relation 33375. Up to 12912 conditions per place. [2024-06-27 23:55:08,539 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 64 selfloop transitions, 13 changer transitions 0/84 dead transitions. [2024-06-27 23:55:08,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 84 transitions, 431 flow [2024-06-27 23:55:08,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 23:55:08,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 23:55:08,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 146 transitions. [2024-06-27 23:55:08,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5725490196078431 [2024-06-27 23:55:08,541 INFO L175 Difference]: Start difference. First operand has 56 places, 49 transitions, 177 flow. Second operand 5 states and 146 transitions. [2024-06-27 23:55:08,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 84 transitions, 431 flow [2024-06-27 23:55:08,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 84 transitions, 412 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-27 23:55:08,544 INFO L231 Difference]: Finished difference. Result has 59 places, 53 transitions, 225 flow [2024-06-27 23:55:08,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=225, PETRI_PLACES=59, PETRI_TRANSITIONS=53} [2024-06-27 23:55:08,545 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 5 predicate places. [2024-06-27 23:55:08,545 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 53 transitions, 225 flow [2024-06-27 23:55:08,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:55:08,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:55:08,546 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:55:08,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 23:55:08,546 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:55:08,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:55:08,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1202062927, now seen corresponding path program 1 times [2024-06-27 23:55:08,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:55:08,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118139820] [2024-06-27 23:55:08,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:55:08,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:55:08,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:55:09,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:55:09,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:55:09,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118139820] [2024-06-27 23:55:09,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118139820] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:55:09,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:55:09,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:55:09,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660750985] [2024-06-27 23:55:09,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:55:09,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:55:09,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:55:09,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:55:09,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:55:10,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-06-27 23:55:10,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 53 transitions, 225 flow. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:55:10,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:55:10,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-06-27 23:55:10,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:55:11,387 INFO L124 PetriNetUnfolderBase]: 9541/13143 cut-off events. [2024-06-27 23:55:11,388 INFO L125 PetriNetUnfolderBase]: For 13690/13690 co-relation queries the response was YES. [2024-06-27 23:55:11,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36701 conditions, 13143 events. 9541/13143 cut-off events. For 13690/13690 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 69902 event pairs, 4602 based on Foata normal form. 8/13118 useless extension candidates. Maximal degree in co-relation 36686. Up to 12846 conditions per place. [2024-06-27 23:55:11,445 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 71 selfloop transitions, 16 changer transitions 0/94 dead transitions. [2024-06-27 23:55:11,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 94 transitions, 515 flow [2024-06-27 23:55:11,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:55:11,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:55:11,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 169 transitions. [2024-06-27 23:55:11,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5522875816993464 [2024-06-27 23:55:11,447 INFO L175 Difference]: Start difference. First operand has 59 places, 53 transitions, 225 flow. Second operand 6 states and 169 transitions. [2024-06-27 23:55:11,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 94 transitions, 515 flow [2024-06-27 23:55:11,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 94 transitions, 482 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-27 23:55:11,451 INFO L231 Difference]: Finished difference. Result has 61 places, 55 transitions, 256 flow [2024-06-27 23:55:11,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=256, PETRI_PLACES=61, PETRI_TRANSITIONS=55} [2024-06-27 23:55:11,452 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 7 predicate places. [2024-06-27 23:55:11,452 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 55 transitions, 256 flow [2024-06-27 23:55:11,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:55:11,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:55:11,452 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:55:11,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 23:55:11,453 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:55:11,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:55:11,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1198197421, now seen corresponding path program 1 times [2024-06-27 23:55:11,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:55:11,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004300459] [2024-06-27 23:55:11,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:55:11,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:55:11,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:55:12,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:55:12,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:55:12,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004300459] [2024-06-27 23:55:12,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004300459] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:55:12,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:55:12,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 23:55:12,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999330769] [2024-06-27 23:55:12,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:55:12,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 23:55:12,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:55:12,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 23:55:12,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 23:55:12,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 51 [2024-06-27 23:55:12,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 55 transitions, 256 flow. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:55:12,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:55:12,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 51 [2024-06-27 23:55:12,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:55:13,667 INFO L124 PetriNetUnfolderBase]: 8137/11567 cut-off events. [2024-06-27 23:55:13,668 INFO L125 PetriNetUnfolderBase]: For 18131/18131 co-relation queries the response was YES. [2024-06-27 23:55:13,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34439 conditions, 11567 events. 8137/11567 cut-off events. For 18131/18131 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 64197 event pairs, 4690 based on Foata normal form. 3/11567 useless extension candidates. Maximal degree in co-relation 34422. Up to 11079 conditions per place. [2024-06-27 23:55:13,728 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 58 selfloop transitions, 12 changer transitions 0/77 dead transitions. [2024-06-27 23:55:13,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 77 transitions, 474 flow [2024-06-27 23:55:13,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:55:13,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:55:13,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 134 transitions. [2024-06-27 23:55:13,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43790849673202614 [2024-06-27 23:55:13,731 INFO L175 Difference]: Start difference. First operand has 61 places, 55 transitions, 256 flow. Second operand 6 states and 134 transitions. [2024-06-27 23:55:13,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 77 transitions, 474 flow [2024-06-27 23:55:13,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 77 transitions, 426 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-27 23:55:13,738 INFO L231 Difference]: Finished difference. Result has 64 places, 61 transitions, 292 flow [2024-06-27 23:55:13,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=292, PETRI_PLACES=64, PETRI_TRANSITIONS=61} [2024-06-27 23:55:13,743 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 10 predicate places. [2024-06-27 23:55:13,744 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 61 transitions, 292 flow [2024-06-27 23:55:13,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:55:13,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:55:13,744 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:55:13,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 23:55:13,744 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:55:13,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:55:13,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1430906450, now seen corresponding path program 1 times [2024-06-27 23:55:13,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:55:13,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208819349] [2024-06-27 23:55:13,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:55:13,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:55:13,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:55:14,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:55:14,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:55:14,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208819349] [2024-06-27 23:55:14,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208819349] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:55:14,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:55:14,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:55:14,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152339340] [2024-06-27 23:55:14,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:55:14,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:55:14,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:55:14,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:55:14,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:55:14,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-27 23:55:14,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 61 transitions, 292 flow. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:55:14,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:55:14,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-27 23:55:14,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:55:16,500 INFO L124 PetriNetUnfolderBase]: 9577/13226 cut-off events. [2024-06-27 23:55:16,500 INFO L125 PetriNetUnfolderBase]: For 31032/31032 co-relation queries the response was YES. [2024-06-27 23:55:16,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42846 conditions, 13226 events. 9577/13226 cut-off events. For 31032/31032 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 70264 event pairs, 5495 based on Foata normal form. 3/13224 useless extension candidates. Maximal degree in co-relation 42826. Up to 12957 conditions per place. [2024-06-27 23:55:16,585 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 68 selfloop transitions, 21 changer transitions 0/95 dead transitions. [2024-06-27 23:55:16,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 95 transitions, 594 flow [2024-06-27 23:55:16,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:55:16,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:55:16,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 143 transitions. [2024-06-27 23:55:16,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4673202614379085 [2024-06-27 23:55:16,587 INFO L175 Difference]: Start difference. First operand has 64 places, 61 transitions, 292 flow. Second operand 6 states and 143 transitions. [2024-06-27 23:55:16,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 95 transitions, 594 flow [2024-06-27 23:55:16,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 95 transitions, 559 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-27 23:55:16,593 INFO L231 Difference]: Finished difference. Result has 68 places, 71 transitions, 384 flow [2024-06-27 23:55:16,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=384, PETRI_PLACES=68, PETRI_TRANSITIONS=71} [2024-06-27 23:55:16,594 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 14 predicate places. [2024-06-27 23:55:16,594 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 71 transitions, 384 flow [2024-06-27 23:55:16,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:55:16,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:55:16,594 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:55:16,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 23:55:16,595 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:55:16,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:55:16,595 INFO L85 PathProgramCache]: Analyzing trace with hash -447925812, now seen corresponding path program 2 times [2024-06-27 23:55:16,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:55:16,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879312703] [2024-06-27 23:55:16,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:55:16,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:55:16,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:55:17,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:55:17,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:55:17,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879312703] [2024-06-27 23:55:17,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879312703] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:55:17,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:55:17,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:55:17,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761663277] [2024-06-27 23:55:17,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:55:17,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:55:17,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:55:17,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:55:17,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:55:17,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-27 23:55:17,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 71 transitions, 384 flow. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:55:17,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:55:17,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-27 23:55:17,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:55:19,264 INFO L124 PetriNetUnfolderBase]: 9599/13284 cut-off events. [2024-06-27 23:55:19,264 INFO L125 PetriNetUnfolderBase]: For 42177/42189 co-relation queries the response was YES. [2024-06-27 23:55:19,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46398 conditions, 13284 events. 9599/13284 cut-off events. For 42177/42189 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 70631 event pairs, 5475 based on Foata normal form. 11/13288 useless extension candidates. Maximal degree in co-relation 46376. Up to 12939 conditions per place. [2024-06-27 23:55:19,351 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 67 selfloop transitions, 32 changer transitions 0/105 dead transitions. [2024-06-27 23:55:19,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 105 transitions, 764 flow [2024-06-27 23:55:19,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:55:19,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:55:19,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 157 transitions. [2024-06-27 23:55:19,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43977591036414565 [2024-06-27 23:55:19,352 INFO L175 Difference]: Start difference. First operand has 68 places, 71 transitions, 384 flow. Second operand 7 states and 157 transitions. [2024-06-27 23:55:19,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 105 transitions, 764 flow [2024-06-27 23:55:19,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 105 transitions, 722 flow, removed 13 selfloop flow, removed 1 redundant places. [2024-06-27 23:55:19,362 INFO L231 Difference]: Finished difference. Result has 74 places, 79 transitions, 505 flow [2024-06-27 23:55:19,362 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=505, PETRI_PLACES=74, PETRI_TRANSITIONS=79} [2024-06-27 23:55:19,363 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 20 predicate places. [2024-06-27 23:55:19,363 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 79 transitions, 505 flow [2024-06-27 23:55:19,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:55:19,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:55:19,363 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:55:19,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 23:55:19,364 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:55:19,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:55:19,364 INFO L85 PathProgramCache]: Analyzing trace with hash 741341068, now seen corresponding path program 3 times [2024-06-27 23:55:19,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:55:19,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417488300] [2024-06-27 23:55:19,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:55:19,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:55:19,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:55:20,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:55:20,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:55:20,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417488300] [2024-06-27 23:55:20,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417488300] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:55:20,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:55:20,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:55:20,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960710831] [2024-06-27 23:55:20,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:55:20,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:55:20,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:55:20,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:55:20,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:55:20,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-27 23:55:20,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 79 transitions, 505 flow. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:55:20,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:55:20,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-27 23:55:20,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:55:21,805 INFO L124 PetriNetUnfolderBase]: 9626/13326 cut-off events. [2024-06-27 23:55:21,805 INFO L125 PetriNetUnfolderBase]: For 56375/56375 co-relation queries the response was YES. [2024-06-27 23:55:21,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49870 conditions, 13326 events. 9626/13326 cut-off events. For 56375/56375 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 70935 event pairs, 5466 based on Foata normal form. 3/13326 useless extension candidates. Maximal degree in co-relation 49845. Up to 13007 conditions per place. [2024-06-27 23:55:21,882 INFO L140 encePairwiseOnDemand]: 37/51 looper letters, 83 selfloop transitions, 31 changer transitions 0/120 dead transitions. [2024-06-27 23:55:21,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 120 transitions, 877 flow [2024-06-27 23:55:21,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:55:21,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:55:21,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 165 transitions. [2024-06-27 23:55:21,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46218487394957986 [2024-06-27 23:55:21,883 INFO L175 Difference]: Start difference. First operand has 74 places, 79 transitions, 505 flow. Second operand 7 states and 165 transitions. [2024-06-27 23:55:21,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 120 transitions, 877 flow [2024-06-27 23:55:21,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 120 transitions, 821 flow, removed 25 selfloop flow, removed 2 redundant places. [2024-06-27 23:55:21,899 INFO L231 Difference]: Finished difference. Result has 80 places, 89 transitions, 609 flow [2024-06-27 23:55:21,899 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=449, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=609, PETRI_PLACES=80, PETRI_TRANSITIONS=89} [2024-06-27 23:55:21,899 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 26 predicate places. [2024-06-27 23:55:21,900 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 89 transitions, 609 flow [2024-06-27 23:55:21,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:55:21,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:55:21,900 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:55:21,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 23:55:21,900 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:55:21,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:55:21,901 INFO L85 PathProgramCache]: Analyzing trace with hash -442353686, now seen corresponding path program 1 times [2024-06-27 23:55:21,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:55:21,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172749455] [2024-06-27 23:55:21,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:55:21,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:55:21,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:55:23,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:55:23,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:55:23,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172749455] [2024-06-27 23:55:23,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172749455] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:55:23,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:55:23,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:55:23,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102475677] [2024-06-27 23:55:23,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:55:23,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:55:23,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:55:23,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:55:23,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:55:23,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-27 23:55:23,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 89 transitions, 609 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:55:23,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:55:23,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-27 23:55:23,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:55:24,904 INFO L124 PetriNetUnfolderBase]: 10021/14135 cut-off events. [2024-06-27 23:55:24,904 INFO L125 PetriNetUnfolderBase]: For 63681/63681 co-relation queries the response was YES. [2024-06-27 23:55:24,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53255 conditions, 14135 events. 10021/14135 cut-off events. For 63681/63681 co-relation queries the response was YES. Maximal size of possible extension queue 507. Compared 77739 event pairs, 5576 based on Foata normal form. 3/14135 useless extension candidates. Maximal degree in co-relation 53227. Up to 13574 conditions per place. [2024-06-27 23:55:24,995 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 101 selfloop transitions, 20 changer transitions 0/127 dead transitions. [2024-06-27 23:55:24,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 127 transitions, 1006 flow [2024-06-27 23:55:24,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:55:24,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:55:24,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 162 transitions. [2024-06-27 23:55:24,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.453781512605042 [2024-06-27 23:55:24,998 INFO L175 Difference]: Start difference. First operand has 80 places, 89 transitions, 609 flow. Second operand 7 states and 162 transitions. [2024-06-27 23:55:24,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 127 transitions, 1006 flow [2024-06-27 23:55:25,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 127 transitions, 926 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 23:55:25,026 INFO L231 Difference]: Finished difference. Result has 82 places, 97 transitions, 656 flow [2024-06-27 23:55:25,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=532, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=656, PETRI_PLACES=82, PETRI_TRANSITIONS=97} [2024-06-27 23:55:25,027 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 28 predicate places. [2024-06-27 23:55:25,027 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 97 transitions, 656 flow [2024-06-27 23:55:25,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:55:25,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:55:25,027 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:55:25,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 23:55:25,028 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:55:25,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:55:25,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1005558990, now seen corresponding path program 1 times [2024-06-27 23:55:25,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:55:25,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081145347] [2024-06-27 23:55:25,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:55:25,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:55:25,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:55:26,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:55:26,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:55:26,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081145347] [2024-06-27 23:55:26,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081145347] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:55:26,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:55:26,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:55:26,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349857801] [2024-06-27 23:55:26,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:55:26,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:55:26,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:55:26,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:55:26,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:55:26,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-27 23:55:26,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 97 transitions, 656 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:55:26,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:55:26,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-27 23:55:26,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:55:27,894 INFO L124 PetriNetUnfolderBase]: 11481/15821 cut-off events. [2024-06-27 23:55:27,894 INFO L125 PetriNetUnfolderBase]: For 94727/94727 co-relation queries the response was YES. [2024-06-27 23:55:27,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65091 conditions, 15821 events. 11481/15821 cut-off events. For 94727/94727 co-relation queries the response was YES. Maximal size of possible extension queue 567. Compared 85420 event pairs, 5620 based on Foata normal form. 3/15815 useless extension candidates. Maximal degree in co-relation 65062. Up to 15425 conditions per place. [2024-06-27 23:55:27,997 INFO L140 encePairwiseOnDemand]: 37/51 looper letters, 101 selfloop transitions, 37 changer transitions 0/145 dead transitions. [2024-06-27 23:55:27,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 145 transitions, 1126 flow [2024-06-27 23:55:27,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:55:27,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:55:27,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 182 transitions. [2024-06-27 23:55:27,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44607843137254904 [2024-06-27 23:55:27,999 INFO L175 Difference]: Start difference. First operand has 82 places, 97 transitions, 656 flow. Second operand 8 states and 182 transitions. [2024-06-27 23:55:27,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 145 transitions, 1126 flow [2024-06-27 23:55:28,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 145 transitions, 1061 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-27 23:55:28,027 INFO L231 Difference]: Finished difference. Result has 88 places, 111 transitions, 787 flow [2024-06-27 23:55:28,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=591, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=787, PETRI_PLACES=88, PETRI_TRANSITIONS=111} [2024-06-27 23:55:28,028 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 34 predicate places. [2024-06-27 23:55:28,028 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 111 transitions, 787 flow [2024-06-27 23:55:28,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:55:28,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:55:28,028 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:55:28,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 23:55:28,029 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:55:28,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:55:28,029 INFO L85 PathProgramCache]: Analyzing trace with hash 20570064, now seen corresponding path program 2 times [2024-06-27 23:55:28,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:55:28,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950602727] [2024-06-27 23:55:28,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:55:28,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:55:28,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:55:29,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:55:29,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:55:29,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950602727] [2024-06-27 23:55:29,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950602727] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:55:29,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:55:29,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:55:29,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800476823] [2024-06-27 23:55:29,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:55:29,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:55:29,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:55:29,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:55:29,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:55:29,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-27 23:55:29,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 111 transitions, 787 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:55:29,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:55:29,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-27 23:55:29,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:55:31,181 INFO L124 PetriNetUnfolderBase]: 11534/15878 cut-off events. [2024-06-27 23:55:31,182 INFO L125 PetriNetUnfolderBase]: For 119283/119283 co-relation queries the response was YES. [2024-06-27 23:55:31,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70585 conditions, 15878 events. 11534/15878 cut-off events. For 119283/119283 co-relation queries the response was YES. Maximal size of possible extension queue 569. Compared 85747 event pairs, 5530 based on Foata normal form. 3/15872 useless extension candidates. Maximal degree in co-relation 70553. Up to 15432 conditions per place. [2024-06-27 23:55:31,305 INFO L140 encePairwiseOnDemand]: 37/51 looper letters, 98 selfloop transitions, 50 changer transitions 0/155 dead transitions. [2024-06-27 23:55:31,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 155 transitions, 1369 flow [2024-06-27 23:55:31,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:55:31,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:55:31,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-27 23:55:31,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49299719887955185 [2024-06-27 23:55:31,307 INFO L175 Difference]: Start difference. First operand has 88 places, 111 transitions, 787 flow. Second operand 7 states and 176 transitions. [2024-06-27 23:55:31,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 155 transitions, 1369 flow [2024-06-27 23:55:31,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 155 transitions, 1299 flow, removed 20 selfloop flow, removed 2 redundant places. [2024-06-27 23:55:31,353 INFO L231 Difference]: Finished difference. Result has 94 places, 119 transitions, 969 flow [2024-06-27 23:55:31,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=717, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=969, PETRI_PLACES=94, PETRI_TRANSITIONS=119} [2024-06-27 23:55:31,354 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 40 predicate places. [2024-06-27 23:55:31,354 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 119 transitions, 969 flow [2024-06-27 23:55:31,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:55:31,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:55:31,355 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:55:31,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 23:55:31,355 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:55:31,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:55:31,355 INFO L85 PathProgramCache]: Analyzing trace with hash 26999154, now seen corresponding path program 3 times [2024-06-27 23:55:31,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:55:31,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946798107] [2024-06-27 23:55:31,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:55:31,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:55:31,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:55:32,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:55:32,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:55:32,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946798107] [2024-06-27 23:55:32,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946798107] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:55:32,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:55:32,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:55:32,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099943237] [2024-06-27 23:55:32,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:55:32,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:55:32,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:55:32,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:55:32,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:55:32,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-27 23:55:32,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 119 transitions, 969 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:55:32,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:55:32,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-27 23:55:32,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:55:34,475 INFO L124 PetriNetUnfolderBase]: 11708/16133 cut-off events. [2024-06-27 23:55:34,476 INFO L125 PetriNetUnfolderBase]: For 151690/151702 co-relation queries the response was YES. [2024-06-27 23:55:34,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77236 conditions, 16133 events. 11708/16133 cut-off events. For 151690/151702 co-relation queries the response was YES. Maximal size of possible extension queue 567. Compared 87348 event pairs, 5118 based on Foata normal form. 14/16130 useless extension candidates. Maximal degree in co-relation 77201. Up to 15269 conditions per place. [2024-06-27 23:55:34,622 INFO L140 encePairwiseOnDemand]: 36/51 looper letters, 100 selfloop transitions, 69 changer transitions 0/176 dead transitions. [2024-06-27 23:55:34,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 176 transitions, 1793 flow [2024-06-27 23:55:34,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:55:34,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:55:34,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 193 transitions. [2024-06-27 23:55:34,624 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4730392156862745 [2024-06-27 23:55:34,624 INFO L175 Difference]: Start difference. First operand has 94 places, 119 transitions, 969 flow. Second operand 8 states and 193 transitions. [2024-06-27 23:55:34,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 176 transitions, 1793 flow [2024-06-27 23:55:34,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 176 transitions, 1710 flow, removed 24 selfloop flow, removed 3 redundant places. [2024-06-27 23:55:34,687 INFO L231 Difference]: Finished difference. Result has 100 places, 133 transitions, 1248 flow [2024-06-27 23:55:34,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=886, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1248, PETRI_PLACES=100, PETRI_TRANSITIONS=133} [2024-06-27 23:55:34,687 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 46 predicate places. [2024-06-27 23:55:34,687 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 133 transitions, 1248 flow [2024-06-27 23:55:34,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:55:34,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:55:34,688 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:55:34,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 23:55:34,688 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:55:34,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:55:34,689 INFO L85 PathProgramCache]: Analyzing trace with hash 2181444, now seen corresponding path program 4 times [2024-06-27 23:55:34,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:55:34,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420382490] [2024-06-27 23:55:34,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:55:34,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:55:34,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:55:35,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:55:35,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:55:35,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420382490] [2024-06-27 23:55:35,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420382490] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:55:35,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:55:35,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:55:35,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547212082] [2024-06-27 23:55:35,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:55:35,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:55:35,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:55:35,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:55:35,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:55:35,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-27 23:55:35,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 133 transitions, 1248 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:55:35,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:55:35,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-27 23:55:35,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:55:37,821 INFO L124 PetriNetUnfolderBase]: 11789/16242 cut-off events. [2024-06-27 23:55:37,821 INFO L125 PetriNetUnfolderBase]: For 188535/188539 co-relation queries the response was YES. [2024-06-27 23:55:37,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84653 conditions, 16242 events. 11789/16242 cut-off events. For 188535/188539 co-relation queries the response was YES. Maximal size of possible extension queue 568. Compared 88115 event pairs, 5272 based on Foata normal form. 7/16246 useless extension candidates. Maximal degree in co-relation 84615. Up to 15805 conditions per place. [2024-06-27 23:55:37,960 INFO L140 encePairwiseOnDemand]: 35/51 looper letters, 133 selfloop transitions, 56 changer transitions 0/196 dead transitions. [2024-06-27 23:55:37,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 196 transitions, 1974 flow [2024-06-27 23:55:37,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:55:37,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:55:37,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2024-06-27 23:55:37,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4681372549019608 [2024-06-27 23:55:37,962 INFO L175 Difference]: Start difference. First operand has 100 places, 133 transitions, 1248 flow. Second operand 8 states and 191 transitions. [2024-06-27 23:55:37,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 196 transitions, 1974 flow [2024-06-27 23:55:38,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 196 transitions, 1868 flow, removed 31 selfloop flow, removed 3 redundant places. [2024-06-27 23:55:38,075 INFO L231 Difference]: Finished difference. Result has 106 places, 156 transitions, 1531 flow [2024-06-27 23:55:38,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1153, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1531, PETRI_PLACES=106, PETRI_TRANSITIONS=156} [2024-06-27 23:55:38,076 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 52 predicate places. [2024-06-27 23:55:38,076 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 156 transitions, 1531 flow [2024-06-27 23:55:38,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:55:38,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:55:38,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:55:38,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 23:55:38,077 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:55:38,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:55:38,077 INFO L85 PathProgramCache]: Analyzing trace with hash 591935184, now seen corresponding path program 5 times [2024-06-27 23:55:38,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:55:38,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418443988] [2024-06-27 23:55:38,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:55:38,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:55:38,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:55:39,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:55:39,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:55:39,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418443988] [2024-06-27 23:55:39,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418443988] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:55:39,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:55:39,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:55:39,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189930911] [2024-06-27 23:55:39,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:55:39,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:55:39,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:55:39,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:55:39,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:55:39,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-27 23:55:39,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 156 transitions, 1531 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:55:39,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:55:39,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-27 23:55:39,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:55:41,055 INFO L124 PetriNetUnfolderBase]: 11921/16420 cut-off events. [2024-06-27 23:55:41,056 INFO L125 PetriNetUnfolderBase]: For 214388/214400 co-relation queries the response was YES. [2024-06-27 23:55:41,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88763 conditions, 16420 events. 11921/16420 cut-off events. For 214388/214400 co-relation queries the response was YES. Maximal size of possible extension queue 567. Compared 89136 event pairs, 5418 based on Foata normal form. 15/16432 useless extension candidates. Maximal degree in co-relation 88722. Up to 15933 conditions per place. [2024-06-27 23:55:41,218 INFO L140 encePairwiseOnDemand]: 35/51 looper letters, 143 selfloop transitions, 81 changer transitions 0/231 dead transitions. [2024-06-27 23:55:41,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 231 transitions, 2562 flow [2024-06-27 23:55:41,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:55:41,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:55:41,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-06-27 23:55:41,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47058823529411764 [2024-06-27 23:55:41,223 INFO L175 Difference]: Start difference. First operand has 106 places, 156 transitions, 1531 flow. Second operand 8 states and 192 transitions. [2024-06-27 23:55:41,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 231 transitions, 2562 flow [2024-06-27 23:55:41,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 231 transitions, 2424 flow, removed 65 selfloop flow, removed 2 redundant places. [2024-06-27 23:55:41,565 INFO L231 Difference]: Finished difference. Result has 114 places, 193 transitions, 2120 flow [2024-06-27 23:55:41,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1457, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2120, PETRI_PLACES=114, PETRI_TRANSITIONS=193} [2024-06-27 23:55:41,565 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 60 predicate places. [2024-06-27 23:55:41,565 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 193 transitions, 2120 flow [2024-06-27 23:55:41,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:55:41,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:55:41,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:55:41,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 23:55:41,566 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:55:41,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:55:41,567 INFO L85 PathProgramCache]: Analyzing trace with hash 619760784, now seen corresponding path program 6 times [2024-06-27 23:55:41,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:55:41,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268552518] [2024-06-27 23:55:41,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:55:41,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:55:41,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:55:42,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:55:42,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:55:42,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268552518] [2024-06-27 23:55:42,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268552518] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:55:42,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:55:42,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:55:42,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594705254] [2024-06-27 23:55:42,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:55:42,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:55:42,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:55:42,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:55:42,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:55:42,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-27 23:55:42,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 193 transitions, 2120 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:55:42,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:55:42,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-27 23:55:42,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:55:44,897 INFO L124 PetriNetUnfolderBase]: 12107/16708 cut-off events. [2024-06-27 23:55:44,898 INFO L125 PetriNetUnfolderBase]: For 242511/242511 co-relation queries the response was YES. [2024-06-27 23:55:44,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93840 conditions, 16708 events. 12107/16708 cut-off events. For 242511/242511 co-relation queries the response was YES. Maximal size of possible extension queue 570. Compared 90925 event pairs, 5291 based on Foata normal form. 6/16711 useless extension candidates. Maximal degree in co-relation 93795. Up to 15871 conditions per place. [2024-06-27 23:55:45,022 INFO L140 encePairwiseOnDemand]: 34/51 looper letters, 153 selfloop transitions, 94 changer transitions 0/254 dead transitions. [2024-06-27 23:55:45,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 254 transitions, 3152 flow [2024-06-27 23:55:45,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:55:45,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:55:45,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 198 transitions. [2024-06-27 23:55:45,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4852941176470588 [2024-06-27 23:55:45,025 INFO L175 Difference]: Start difference. First operand has 114 places, 193 transitions, 2120 flow. Second operand 8 states and 198 transitions. [2024-06-27 23:55:45,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 254 transitions, 3152 flow [2024-06-27 23:55:45,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 254 transitions, 3021 flow, removed 32 selfloop flow, removed 3 redundant places. [2024-06-27 23:55:45,134 INFO L231 Difference]: Finished difference. Result has 120 places, 210 transitions, 2534 flow [2024-06-27 23:55:45,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=2005, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2534, PETRI_PLACES=120, PETRI_TRANSITIONS=210} [2024-06-27 23:55:45,135 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 66 predicate places. [2024-06-27 23:55:45,135 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 210 transitions, 2534 flow [2024-06-27 23:55:45,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:55:45,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:55:45,136 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:55:45,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 23:55:45,136 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:55:45,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:55:45,136 INFO L85 PathProgramCache]: Analyzing trace with hash -828061236, now seen corresponding path program 1 times [2024-06-27 23:55:45,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:55:45,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373308138] [2024-06-27 23:55:45,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:55:45,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:55:45,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:55:46,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:55:46,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:55:46,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373308138] [2024-06-27 23:55:46,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373308138] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:55:46,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:55:46,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:55:46,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061412112] [2024-06-27 23:55:46,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:55:46,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:55:46,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:55:46,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:55:46,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:55:46,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-27 23:55:46,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 210 transitions, 2534 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:55:46,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:55:46,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-27 23:55:46,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:55:48,954 INFO L124 PetriNetUnfolderBase]: 11001/15427 cut-off events. [2024-06-27 23:55:48,954 INFO L125 PetriNetUnfolderBase]: For 228654/228654 co-relation queries the response was YES. [2024-06-27 23:55:49,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87082 conditions, 15427 events. 11001/15427 cut-off events. For 228654/228654 co-relation queries the response was YES. Maximal size of possible extension queue 507. Compared 84208 event pairs, 4531 based on Foata normal form. 6/15430 useless extension candidates. Maximal degree in co-relation 87035. Up to 14870 conditions per place. [2024-06-27 23:55:49,095 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 222 selfloop transitions, 23 changer transitions 0/251 dead transitions. [2024-06-27 23:55:49,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 251 transitions, 3218 flow [2024-06-27 23:55:49,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:55:49,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:55:49,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 184 transitions. [2024-06-27 23:55:49,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45098039215686275 [2024-06-27 23:55:49,098 INFO L175 Difference]: Start difference. First operand has 120 places, 210 transitions, 2534 flow. Second operand 8 states and 184 transitions. [2024-06-27 23:55:49,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 251 transitions, 3218 flow [2024-06-27 23:55:49,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 251 transitions, 3077 flow, removed 35 selfloop flow, removed 4 redundant places. [2024-06-27 23:55:49,256 INFO L231 Difference]: Finished difference. Result has 124 places, 213 transitions, 2511 flow [2024-06-27 23:55:49,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=2393, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2511, PETRI_PLACES=124, PETRI_TRANSITIONS=213} [2024-06-27 23:55:49,258 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 70 predicate places. [2024-06-27 23:55:49,260 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 213 transitions, 2511 flow [2024-06-27 23:55:49,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:55:49,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:55:49,260 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:55:49,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 23:55:49,260 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:55:49,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:55:49,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1350681795, now seen corresponding path program 1 times [2024-06-27 23:55:49,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:55:49,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749479151] [2024-06-27 23:55:49,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:55:49,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:55:49,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:55:50,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:55:50,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:55:50,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749479151] [2024-06-27 23:55:50,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749479151] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:55:50,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:55:50,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 23:55:50,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123707920] [2024-06-27 23:55:50,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:55:50,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 23:55:50,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:55:50,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 23:55:50,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 23:55:50,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-27 23:55:50,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 213 transitions, 2511 flow. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:55:50,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:55:50,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-27 23:55:50,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:55:52,097 INFO L124 PetriNetUnfolderBase]: 10987/15665 cut-off events. [2024-06-27 23:55:52,097 INFO L125 PetriNetUnfolderBase]: For 246208/246208 co-relation queries the response was YES. [2024-06-27 23:55:52,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89533 conditions, 15665 events. 10987/15665 cut-off events. For 246208/246208 co-relation queries the response was YES. Maximal size of possible extension queue 519. Compared 87042 event pairs, 4589 based on Foata normal form. 4/15666 useless extension candidates. Maximal degree in co-relation 89484. Up to 14909 conditions per place. [2024-06-27 23:55:52,251 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 213 selfloop transitions, 12 changer transitions 0/231 dead transitions. [2024-06-27 23:55:52,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 231 transitions, 3057 flow [2024-06-27 23:55:52,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 23:55:52,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 23:55:52,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 115 transitions. [2024-06-27 23:55:52,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45098039215686275 [2024-06-27 23:55:52,252 INFO L175 Difference]: Start difference. First operand has 124 places, 213 transitions, 2511 flow. Second operand 5 states and 115 transitions. [2024-06-27 23:55:52,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 231 transitions, 3057 flow [2024-06-27 23:55:52,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 231 transitions, 2965 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-27 23:55:52,415 INFO L231 Difference]: Finished difference. Result has 123 places, 217 transitions, 2510 flow [2024-06-27 23:55:52,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=2419, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2510, PETRI_PLACES=123, PETRI_TRANSITIONS=217} [2024-06-27 23:55:52,416 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 69 predicate places. [2024-06-27 23:55:52,416 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 217 transitions, 2510 flow [2024-06-27 23:55:52,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:55:52,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:55:52,416 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:55:52,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 23:55:52,416 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:55:52,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:55:52,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1107646903, now seen corresponding path program 1 times [2024-06-27 23:55:52,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:55:52,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766386414] [2024-06-27 23:55:52,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:55:52,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:55:52,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:55:53,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:55:53,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:55:53,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766386414] [2024-06-27 23:55:53,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766386414] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:55:53,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:55:53,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:55:53,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104164308] [2024-06-27 23:55:53,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:55:53,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:55:53,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:55:53,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:55:53,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:55:53,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-27 23:55:53,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 217 transitions, 2510 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:55:53,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:55:53,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-27 23:55:53,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:55:55,995 INFO L124 PetriNetUnfolderBase]: 12102/16711 cut-off events. [2024-06-27 23:55:55,995 INFO L125 PetriNetUnfolderBase]: For 323961/323965 co-relation queries the response was YES. [2024-06-27 23:55:56,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104071 conditions, 16711 events. 12102/16711 cut-off events. For 323961/323965 co-relation queries the response was YES. Maximal size of possible extension queue 570. Compared 90534 event pairs, 5163 based on Foata normal form. 14/16712 useless extension candidates. Maximal degree in co-relation 104020. Up to 16118 conditions per place. [2024-06-27 23:55:56,199 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 167 selfloop transitions, 81 changer transitions 0/255 dead transitions. [2024-06-27 23:55:56,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 255 transitions, 3282 flow [2024-06-27 23:55:56,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:55:56,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:55:56,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2024-06-27 23:55:56,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48179271708683474 [2024-06-27 23:55:56,201 INFO L175 Difference]: Start difference. First operand has 123 places, 217 transitions, 2510 flow. Second operand 7 states and 172 transitions. [2024-06-27 23:55:56,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 255 transitions, 3282 flow [2024-06-27 23:55:56,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 255 transitions, 3183 flow, removed 41 selfloop flow, removed 3 redundant places. [2024-06-27 23:55:56,584 INFO L231 Difference]: Finished difference. Result has 127 places, 224 transitions, 2788 flow [2024-06-27 23:55:56,584 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=2411, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2788, PETRI_PLACES=127, PETRI_TRANSITIONS=224} [2024-06-27 23:55:56,585 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 73 predicate places. [2024-06-27 23:55:56,585 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 224 transitions, 2788 flow [2024-06-27 23:55:56,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:55:56,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:55:56,585 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:55:56,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 23:55:56,585 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:55:56,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:55:56,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1103831671, now seen corresponding path program 1 times [2024-06-27 23:55:56,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:55:56,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931756548] [2024-06-27 23:55:56,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:55:56,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:55:56,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:55:57,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:55:57,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:55:57,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931756548] [2024-06-27 23:55:57,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931756548] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:55:57,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:55:57,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:55:57,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648122608] [2024-06-27 23:55:57,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:55:57,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:55:57,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:55:57,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:55:57,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:55:58,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2024-06-27 23:55:58,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 224 transitions, 2788 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:55:58,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:55:58,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2024-06-27 23:55:58,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:56:00,752 INFO L124 PetriNetUnfolderBase]: 12816/17566 cut-off events. [2024-06-27 23:56:00,752 INFO L125 PetriNetUnfolderBase]: For 344990/344990 co-relation queries the response was YES. [2024-06-27 23:56:00,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107975 conditions, 17566 events. 12816/17566 cut-off events. For 344990/344990 co-relation queries the response was YES. Maximal size of possible extension queue 556. Compared 92179 event pairs, 4972 based on Foata normal form. 15/17568 useless extension candidates. Maximal degree in co-relation 107922. Up to 16814 conditions per place. [2024-06-27 23:56:00,921 INFO L140 encePairwiseOnDemand]: 35/51 looper letters, 169 selfloop transitions, 130 changer transitions 0/304 dead transitions. [2024-06-27 23:56:00,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 304 transitions, 4170 flow [2024-06-27 23:56:00,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:56:00,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:56:00,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-06-27 23:56:00,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47058823529411764 [2024-06-27 23:56:00,923 INFO L175 Difference]: Start difference. First operand has 127 places, 224 transitions, 2788 flow. Second operand 8 states and 192 transitions. [2024-06-27 23:56:00,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 304 transitions, 4170 flow [2024-06-27 23:56:01,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 304 transitions, 3917 flow, removed 57 selfloop flow, removed 5 redundant places. [2024-06-27 23:56:01,160 INFO L231 Difference]: Finished difference. Result has 131 places, 264 transitions, 3499 flow [2024-06-27 23:56:01,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=2565, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3499, PETRI_PLACES=131, PETRI_TRANSITIONS=264} [2024-06-27 23:56:01,161 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 77 predicate places. [2024-06-27 23:56:01,161 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 264 transitions, 3499 flow [2024-06-27 23:56:01,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:56:01,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:56:01,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:56:01,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 23:56:01,161 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:56:01,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:56:01,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1103837623, now seen corresponding path program 2 times [2024-06-27 23:56:01,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:56:01,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208158689] [2024-06-27 23:56:01,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:56:01,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:56:01,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:56:02,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:56:02,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:56:02,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208158689] [2024-06-27 23:56:02,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208158689] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:56:02,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:56:02,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:56:02,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480345515] [2024-06-27 23:56:02,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:56:02,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:56:02,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:56:02,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:56:02,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:56:02,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-27 23:56:02,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 264 transitions, 3499 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:56:02,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:56:02,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-27 23:56:02,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:56:06,253 INFO L124 PetriNetUnfolderBase]: 12111/16800 cut-off events. [2024-06-27 23:56:06,253 INFO L125 PetriNetUnfolderBase]: For 380992/381024 co-relation queries the response was YES. [2024-06-27 23:56:06,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109370 conditions, 16800 events. 12111/16800 cut-off events. For 380992/381024 co-relation queries the response was YES. Maximal size of possible extension queue 568. Compared 91205 event pairs, 4876 based on Foata normal form. 18/16805 useless extension candidates. Maximal degree in co-relation 109315. Up to 16001 conditions per place. [2024-06-27 23:56:06,384 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 172 selfloop transitions, 122 changer transitions 0/302 dead transitions. [2024-06-27 23:56:06,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 302 transitions, 4391 flow [2024-06-27 23:56:06,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:56:06,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:56:06,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2024-06-27 23:56:06,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48739495798319327 [2024-06-27 23:56:06,386 INFO L175 Difference]: Start difference. First operand has 131 places, 264 transitions, 3499 flow. Second operand 7 states and 174 transitions. [2024-06-27 23:56:06,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 302 transitions, 4391 flow [2024-06-27 23:56:06,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 302 transitions, 4078 flow, removed 74 selfloop flow, removed 4 redundant places. [2024-06-27 23:56:06,682 INFO L231 Difference]: Finished difference. Result has 134 places, 271 transitions, 3658 flow [2024-06-27 23:56:06,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=3186, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3658, PETRI_PLACES=134, PETRI_TRANSITIONS=271} [2024-06-27 23:56:06,683 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 80 predicate places. [2024-06-27 23:56:06,683 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 271 transitions, 3658 flow [2024-06-27 23:56:06,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:56:06,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:56:06,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:56:06,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 23:56:06,684 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:56:06,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:56:06,684 INFO L85 PathProgramCache]: Analyzing trace with hash 92272201, now seen corresponding path program 3 times [2024-06-27 23:56:06,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:56:06,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116998467] [2024-06-27 23:56:06,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:56:06,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:56:06,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:56:08,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:56:08,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:56:08,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116998467] [2024-06-27 23:56:08,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116998467] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:56:08,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:56:08,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:56:08,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753466632] [2024-06-27 23:56:08,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:56:08,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:56:08,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:56:08,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:56:08,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:56:08,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-27 23:56:08,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 271 transitions, 3658 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:56:08,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:56:08,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-27 23:56:08,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:56:11,051 INFO L124 PetriNetUnfolderBase]: 12102/16799 cut-off events. [2024-06-27 23:56:11,051 INFO L125 PetriNetUnfolderBase]: For 415141/415185 co-relation queries the response was YES. [2024-06-27 23:56:11,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110805 conditions, 16799 events. 12102/16799 cut-off events. For 415141/415185 co-relation queries the response was YES. Maximal size of possible extension queue 568. Compared 91349 event pairs, 4794 based on Foata normal form. 43/16815 useless extension candidates. Maximal degree in co-relation 110749. Up to 15802 conditions per place. [2024-06-27 23:56:11,205 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 154 selfloop transitions, 156 changer transitions 0/318 dead transitions. [2024-06-27 23:56:11,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 318 transitions, 4750 flow [2024-06-27 23:56:11,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:56:11,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:56:11,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-06-27 23:56:11,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49019607843137253 [2024-06-27 23:56:11,207 INFO L175 Difference]: Start difference. First operand has 134 places, 271 transitions, 3658 flow. Second operand 7 states and 175 transitions. [2024-06-27 23:56:11,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 318 transitions, 4750 flow [2024-06-27 23:56:11,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 318 transitions, 4389 flow, removed 68 selfloop flow, removed 5 redundant places. [2024-06-27 23:56:11,487 INFO L231 Difference]: Finished difference. Result has 137 places, 283 transitions, 3976 flow [2024-06-27 23:56:11,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=3297, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3976, PETRI_PLACES=137, PETRI_TRANSITIONS=283} [2024-06-27 23:56:11,488 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 83 predicate places. [2024-06-27 23:56:11,488 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 283 transitions, 3976 flow [2024-06-27 23:56:11,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:56:11,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:56:11,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:56:11,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 23:56:11,489 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:56:11,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:56:11,489 INFO L85 PathProgramCache]: Analyzing trace with hash 836980651, now seen corresponding path program 2 times [2024-06-27 23:56:11,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:56:11,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102345682] [2024-06-27 23:56:11,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:56:11,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:56:11,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:56:13,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:56:13,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:56:13,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102345682] [2024-06-27 23:56:13,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102345682] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:56:13,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:56:13,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:56:13,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365527556] [2024-06-27 23:56:13,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:56:13,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:56:13,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:56:13,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:56:13,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:56:13,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2024-06-27 23:56:13,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 283 transitions, 3976 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:56:13,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:56:13,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2024-06-27 23:56:13,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:56:16,159 INFO L124 PetriNetUnfolderBase]: 12988/17806 cut-off events. [2024-06-27 23:56:16,159 INFO L125 PetriNetUnfolderBase]: For 442520/442532 co-relation queries the response was YES. [2024-06-27 23:56:16,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117457 conditions, 17806 events. 12988/17806 cut-off events. For 442520/442532 co-relation queries the response was YES. Maximal size of possible extension queue 556. Compared 93365 event pairs, 4983 based on Foata normal form. 17/17796 useless extension candidates. Maximal degree in co-relation 117399. Up to 16787 conditions per place. [2024-06-27 23:56:16,332 INFO L140 encePairwiseOnDemand]: 35/51 looper letters, 173 selfloop transitions, 167 changer transitions 0/345 dead transitions. [2024-06-27 23:56:16,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 345 transitions, 5243 flow [2024-06-27 23:56:16,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:56:16,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:56:16,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 205 transitions. [2024-06-27 23:56:16,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4466230936819172 [2024-06-27 23:56:16,334 INFO L175 Difference]: Start difference. First operand has 137 places, 283 transitions, 3976 flow. Second operand 9 states and 205 transitions. [2024-06-27 23:56:16,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 345 transitions, 5243 flow [2024-06-27 23:56:16,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 345 transitions, 5114 flow, removed 31 selfloop flow, removed 3 redundant places. [2024-06-27 23:56:16,725 INFO L231 Difference]: Finished difference. Result has 145 places, 302 transitions, 4625 flow [2024-06-27 23:56:16,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=3851, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4625, PETRI_PLACES=145, PETRI_TRANSITIONS=302} [2024-06-27 23:56:16,726 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 91 predicate places. [2024-06-27 23:56:16,726 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 302 transitions, 4625 flow [2024-06-27 23:56:16,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:56:16,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:56:16,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:56:16,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 23:56:16,727 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:56:16,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:56:16,727 INFO L85 PathProgramCache]: Analyzing trace with hash 99629803, now seen corresponding path program 3 times [2024-06-27 23:56:16,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:56:16,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074778100] [2024-06-27 23:56:16,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:56:16,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:56:16,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:56:18,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:56:18,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:56:18,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074778100] [2024-06-27 23:56:18,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074778100] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:56:18,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:56:18,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:56:18,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510088969] [2024-06-27 23:56:18,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:56:18,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:56:18,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:56:18,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:56:18,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:56:18,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2024-06-27 23:56:18,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 302 transitions, 4625 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:56:18,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:56:18,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2024-06-27 23:56:18,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:56:21,455 INFO L124 PetriNetUnfolderBase]: 13001/17824 cut-off events. [2024-06-27 23:56:21,455 INFO L125 PetriNetUnfolderBase]: For 474113/474125 co-relation queries the response was YES. [2024-06-27 23:56:21,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121110 conditions, 17824 events. 13001/17824 cut-off events. For 474113/474125 co-relation queries the response was YES. Maximal size of possible extension queue 556. Compared 93460 event pairs, 4958 based on Foata normal form. 14/17811 useless extension candidates. Maximal degree in co-relation 121048. Up to 16820 conditions per place. [2024-06-27 23:56:21,625 INFO L140 encePairwiseOnDemand]: 35/51 looper letters, 182 selfloop transitions, 191 changer transitions 0/378 dead transitions. [2024-06-27 23:56:21,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 378 transitions, 6353 flow [2024-06-27 23:56:21,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:56:21,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:56:21,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-27 23:56:21,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48284313725490197 [2024-06-27 23:56:21,627 INFO L175 Difference]: Start difference. First operand has 145 places, 302 transitions, 4625 flow. Second operand 8 states and 197 transitions. [2024-06-27 23:56:21,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 378 transitions, 6353 flow [2024-06-27 23:56:22,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 378 transitions, 6232 flow, removed 32 selfloop flow, removed 3 redundant places. [2024-06-27 23:56:22,147 INFO L231 Difference]: Finished difference. Result has 151 places, 330 transitions, 5492 flow [2024-06-27 23:56:22,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=4508, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5492, PETRI_PLACES=151, PETRI_TRANSITIONS=330} [2024-06-27 23:56:22,148 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 97 predicate places. [2024-06-27 23:56:22,148 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 330 transitions, 5492 flow [2024-06-27 23:56:22,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:56:22,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:56:22,148 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:56:22,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 23:56:22,149 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:56:22,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:56:22,149 INFO L85 PathProgramCache]: Analyzing trace with hash 99896713, now seen corresponding path program 4 times [2024-06-27 23:56:22,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:56:22,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724880345] [2024-06-27 23:56:22,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:56:22,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:56:22,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:56:23,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:56:23,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:56:23,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724880345] [2024-06-27 23:56:23,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724880345] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:56:23,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:56:23,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:56:23,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170683459] [2024-06-27 23:56:23,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:56:23,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:56:23,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:56:23,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:56:23,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:56:24,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2024-06-27 23:56:24,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 330 transitions, 5492 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:56:24,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:56:24,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2024-06-27 23:56:24,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:56:27,215 INFO L124 PetriNetUnfolderBase]: 13150/18026 cut-off events. [2024-06-27 23:56:27,215 INFO L125 PetriNetUnfolderBase]: For 514329/514359 co-relation queries the response was YES. [2024-06-27 23:56:27,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126801 conditions, 18026 events. 13150/18026 cut-off events. For 514329/514359 co-relation queries the response was YES. Maximal size of possible extension queue 555. Compared 94526 event pairs, 5001 based on Foata normal form. 23/18040 useless extension candidates. Maximal degree in co-relation 126736. Up to 17194 conditions per place. [2024-06-27 23:56:27,375 INFO L140 encePairwiseOnDemand]: 35/51 looper letters, 272 selfloop transitions, 122 changer transitions 0/399 dead transitions. [2024-06-27 23:56:27,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 399 transitions, 7057 flow [2024-06-27 23:56:27,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:56:27,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:56:27,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-06-27 23:56:27,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4632352941176471 [2024-06-27 23:56:27,377 INFO L175 Difference]: Start difference. First operand has 151 places, 330 transitions, 5492 flow. Second operand 8 states and 189 transitions. [2024-06-27 23:56:27,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 399 transitions, 7057 flow [2024-06-27 23:56:27,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 399 transitions, 6761 flow, removed 37 selfloop flow, removed 3 redundant places. [2024-06-27 23:56:27,979 INFO L231 Difference]: Finished difference. Result has 158 places, 353 transitions, 5991 flow [2024-06-27 23:56:27,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=5196, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5991, PETRI_PLACES=158, PETRI_TRANSITIONS=353} [2024-06-27 23:56:27,979 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 104 predicate places. [2024-06-27 23:56:27,980 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 353 transitions, 5991 flow [2024-06-27 23:56:27,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:56:27,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:56:27,980 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:56:27,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 23:56:27,981 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:56:27,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:56:27,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1398373469, now seen corresponding path program 4 times [2024-06-27 23:56:27,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:56:27,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894471258] [2024-06-27 23:56:27,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:56:27,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:56:27,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat