./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe004_power.oepc_pso.oepc_rmo.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe004_power.oepc_pso.oepc_rmo.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/safe004_power.oepc_pso.oepc_rmo.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe004_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 22:38:16,922 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 22:38:16,980 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 22:38:16,984 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 22:38:16,985 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 22:38:17,012 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 22:38:17,012 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 22:38:17,013 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 22:38:17,013 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 22:38:17,016 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 22:38:17,016 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 22:38:17,017 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 22:38:17,018 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 22:38:17,019 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 22:38:17,019 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 22:38:17,019 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 22:38:17,019 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 22:38:17,020 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 22:38:17,020 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 22:38:17,020 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 22:38:17,020 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 22:38:17,021 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 22:38:17,021 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 22:38:17,021 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 22:38:17,021 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 22:38:17,021 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 22:38:17,022 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 22:38:17,022 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 22:38:17,022 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 22:38:17,023 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 22:38:17,023 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 22:38:17,024 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 22:38:17,024 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:38:17,024 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 22:38:17,024 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 22:38:17,024 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 22:38:17,025 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 22:38:17,025 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 22:38:17,025 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 22:38:17,025 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 22:38:17,025 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 22:38:17,026 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 22:38:17,026 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 22:38:17,026 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 22:38:17,244 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 22:38:17,265 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 22:38:17,267 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 22:38:17,268 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 22:38:17,269 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 22:38:17,269 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe004_power.oepc_pso.oepc_rmo.oepc.i [2024-06-27 22:38:18,328 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 22:38:18,501 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 22:38:18,502 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe004_power.oepc_pso.oepc_rmo.oepc.i [2024-06-27 22:38:18,512 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74dd3ae43/a0fad2bc19254d88893f30fb9ecfe91b/FLAG5165c2db8 [2024-06-27 22:38:18,522 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74dd3ae43/a0fad2bc19254d88893f30fb9ecfe91b [2024-06-27 22:38:18,524 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 22:38:18,524 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 22:38:18,525 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe004_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml [2024-06-27 22:38:18,610 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 22:38:18,611 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 22:38:18,612 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 22:38:18,612 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 22:38:18,616 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 22:38:18,616 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:38:18" (1/2) ... [2024-06-27 22:38:18,617 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2200fabd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:38:18, skipping insertion in model container [2024-06-27 22:38:18,617 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:38:18" (1/2) ... [2024-06-27 22:38:18,619 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@321401fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:38:18, skipping insertion in model container [2024-06-27 22:38:18,620 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:38:18" (2/2) ... [2024-06-27 22:38:18,621 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2200fabd and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:38:18, skipping insertion in model container [2024-06-27 22:38:18,621 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:38:18" (2/2) ... [2024-06-27 22:38:18,621 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 22:38:18,643 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 22:38:18,644 INFO L97 edCorrectnessWitness]: Location invariant before [L850-L850] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )y$flush_delayed) + (long long )y$r_buff0_thd1 >= 0LL && (0LL - (long long )y$flush_delayed) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$flush_delayed) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$r_buff0_thd1 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$r_buff0_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd3) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$read_delayed) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$read_delayed) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )y$r_buff0_thd1) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )y$r_buff0_thd1) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )y$r_buff1_thd1) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )y$r_buff1_thd1) + (long long )y$w_buff0_used >= 0LL) && (2LL - (long long )y$w_buff0) + (long long )y$w_buff0_used >= 0LL) && (long long )__unbuffered_cnt + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$w_buff0_used >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )y$w_buff0_used >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )y$w_buff0_used >= 0LL) && (long long )main$tmp_guard1 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$w_buff0 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$w_buff0_used >= 0LL) && (long long )x + (long long )y$r_buff0_thd1 >= 0LL) && (long long )x + (long long )y$w_buff0 >= 0LL) && (long long )x + (long long )y$w_buff0_used >= 0LL) && (long long )y + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y + (long long )y$w_buff0 >= 0LL) && (long long )y + (long long )y$w_buff0_used >= 0LL) && (long long )y$flush_delayed + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$flush_delayed + (long long )y$w_buff0 >= 0LL) && (long long )y$flush_delayed + (long long )y$w_buff0_used >= 0LL) && (long long )y$mem_tmp + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$mem_tmp + (long long )y$w_buff0 >= 0LL) && (long long )y$mem_tmp + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff0_thd2 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff0_thd3 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff1_thd3 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$w_buff1_used >= 0LL) && (long long )y$r_buff0_thd2 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd2 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd3 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd3 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff1_thd1 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd1 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff1_thd2 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd2 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff1_thd3 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd3 + (long long )y$w_buff0_used >= 0LL) && (long long )y$read_delayed + (long long )y$w_buff0 >= 0LL) && (long long )y$read_delayed + (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 + (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 + (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 + (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0_used + (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0_used + (long long )y$w_buff1_used >= 0LL) && (long long )weak$$choice0 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )weak$$choice0 + (long long )y$w_buff0 >= 0LL) && (long long )weak$$choice0 + (long long )y$w_buff0_used >= 0LL) && (long long )weak$$choice2 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )weak$$choice2 + (long long )y$w_buff0 >= 0LL) && (long long )weak$$choice2 + (long long )y$w_buff0_used >= 0LL) && (1LL + (long long )y$r_buff0_thd1) - (long long )y$w_buff0 >= 0LL) && (1LL + (long long )y$r_buff0_thd1) - (long long )y$w_buff1 >= 0LL) && (1LL + (long long )y$r_buff1_thd1) - (long long )y$w_buff1 >= 0LL) && (1LL + (long long )y$w_buff0) - (long long )y$w_buff0_used >= 0LL) && (1LL + (long long )y$w_buff0) - (long long )y$w_buff1_used >= 0LL) && (2LL + (long long )y$w_buff0_used) - (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff0_thd2 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff0_thd3 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff1_thd3 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$w_buff1_used >= 0LL) && (long long )y$r_buff1_thd1 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0_used - (long long )y$w_buff1_used >= 0LL) [2024-06-27 22:38:18,645 INFO L97 edCorrectnessWitness]: Location invariant before [L849-L849] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )y$flush_delayed) + (long long )y$r_buff0_thd1 >= 0LL && (0LL - (long long )y$flush_delayed) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$flush_delayed) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$r_buff0_thd1 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$r_buff0_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd3) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$read_delayed) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$read_delayed) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )y$r_buff0_thd1) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )y$r_buff0_thd1) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )y$r_buff1_thd1) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )y$r_buff1_thd1) + (long long )y$w_buff0_used >= 0LL) && (2LL - (long long )y$w_buff0) + (long long )y$w_buff0_used >= 0LL) && (long long )__unbuffered_cnt + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$w_buff0_used >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )y$w_buff0_used >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )y$w_buff0_used >= 0LL) && (long long )main$tmp_guard1 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$w_buff0 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$w_buff0_used >= 0LL) && (long long )x + (long long )y$r_buff0_thd1 >= 0LL) && (long long )x + (long long )y$w_buff0 >= 0LL) && (long long )x + (long long )y$w_buff0_used >= 0LL) && (long long )y + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y + (long long )y$w_buff0 >= 0LL) && (long long )y + (long long )y$w_buff0_used >= 0LL) && (long long )y$flush_delayed + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$flush_delayed + (long long )y$w_buff0 >= 0LL) && (long long )y$flush_delayed + (long long )y$w_buff0_used >= 0LL) && (long long )y$mem_tmp + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$mem_tmp + (long long )y$w_buff0 >= 0LL) && (long long )y$mem_tmp + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff0_thd2 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff0_thd3 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff1_thd3 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$w_buff1_used >= 0LL) && (long long )y$r_buff0_thd2 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd2 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd3 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd3 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff1_thd1 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd1 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff1_thd2 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd2 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff1_thd3 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd3 + (long long )y$w_buff0_used >= 0LL) && (long long )y$read_delayed + (long long )y$w_buff0 >= 0LL) && (long long )y$read_delayed + (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 + (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 + (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 + (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0_used + (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0_used + (long long )y$w_buff1_used >= 0LL) && (long long )weak$$choice0 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )weak$$choice0 + (long long )y$w_buff0 >= 0LL) && (long long )weak$$choice0 + (long long )y$w_buff0_used >= 0LL) && (long long )weak$$choice2 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )weak$$choice2 + (long long )y$w_buff0 >= 0LL) && (long long )weak$$choice2 + (long long )y$w_buff0_used >= 0LL) && (1LL + (long long )y$r_buff0_thd1) - (long long )y$w_buff0 >= 0LL) && (1LL + (long long )y$r_buff0_thd1) - (long long )y$w_buff1 >= 0LL) && (1LL + (long long )y$r_buff1_thd1) - (long long )y$w_buff1 >= 0LL) && (1LL + (long long )y$w_buff0) - (long long )y$w_buff0_used >= 0LL) && (1LL + (long long )y$w_buff0) - (long long )y$w_buff1_used >= 0LL) && (2LL + (long long )y$w_buff0_used) - (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff0_thd2 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff0_thd3 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff1_thd3 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$w_buff1_used >= 0LL) && (long long )y$r_buff1_thd1 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0_used - (long long )y$w_buff1_used >= 0LL) [2024-06-27 22:38:18,645 INFO L97 edCorrectnessWitness]: Location invariant before [L847-L847] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )y$flush_delayed) + (long long )y$r_buff0_thd1 >= 0LL && (0LL - (long long )y$flush_delayed) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$flush_delayed) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$r_buff0_thd1 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$r_buff0_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd3) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$read_delayed) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$read_delayed) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )y$r_buff0_thd1) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )y$r_buff0_thd1) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )y$r_buff1_thd1) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )y$r_buff1_thd1) + (long long )y$w_buff0_used >= 0LL) && (2LL - (long long )y$w_buff0) + (long long )y$w_buff0_used >= 0LL) && (long long )__unbuffered_cnt + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$w_buff0_used >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )y$w_buff0_used >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )y$w_buff0_used >= 0LL) && (long long )main$tmp_guard1 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$w_buff0 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$w_buff0_used >= 0LL) && (long long )x + (long long )y$r_buff0_thd1 >= 0LL) && (long long )x + (long long )y$w_buff0 >= 0LL) && (long long )x + (long long )y$w_buff0_used >= 0LL) && (long long )y + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y + (long long )y$w_buff0 >= 0LL) && (long long )y + (long long )y$w_buff0_used >= 0LL) && (long long )y$flush_delayed + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$flush_delayed + (long long )y$w_buff0 >= 0LL) && (long long )y$flush_delayed + (long long )y$w_buff0_used >= 0LL) && (long long )y$mem_tmp + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$mem_tmp + (long long )y$w_buff0 >= 0LL) && (long long )y$mem_tmp + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff0_thd2 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff0_thd3 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff1_thd3 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$w_buff1_used >= 0LL) && (long long )y$r_buff0_thd2 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd2 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd3 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd3 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff1_thd1 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd1 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff1_thd2 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd2 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff1_thd3 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd3 + (long long )y$w_buff0_used >= 0LL) && (long long )y$read_delayed + (long long )y$w_buff0 >= 0LL) && (long long )y$read_delayed + (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 + (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 + (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 + (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0_used + (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0_used + (long long )y$w_buff1_used >= 0LL) && (long long )weak$$choice0 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )weak$$choice0 + (long long )y$w_buff0 >= 0LL) && (long long )weak$$choice0 + (long long )y$w_buff0_used >= 0LL) && (long long )weak$$choice2 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )weak$$choice2 + (long long )y$w_buff0 >= 0LL) && (long long )weak$$choice2 + (long long )y$w_buff0_used >= 0LL) && (1LL + (long long )y$r_buff0_thd1) - (long long )y$w_buff0 >= 0LL) && (1LL + (long long )y$r_buff0_thd1) - (long long )y$w_buff1 >= 0LL) && (1LL + (long long )y$r_buff1_thd1) - (long long )y$w_buff1 >= 0LL) && (1LL + (long long )y$w_buff0) - (long long )y$w_buff0_used >= 0LL) && (1LL + (long long )y$w_buff0) - (long long )y$w_buff1_used >= 0LL) && (2LL + (long long )y$w_buff0_used) - (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff0_thd2 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff0_thd3 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff1_thd3 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$w_buff1_used >= 0LL) && (long long )y$r_buff1_thd1 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0_used - (long long )y$w_buff1_used >= 0LL) [2024-06-27 22:38:18,645 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 22:38:18,645 INFO L106 edCorrectnessWitness]: ghost_update [L845-L845] multithreaded = 1; [2024-06-27 22:38:18,684 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 22:38:18,798 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe004_power.oepc_pso.oepc_rmo.oepc.i[970,983] [2024-06-27 22:38:18,907 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:38:18,925 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 22:38:18,953 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe004_power.oepc_pso.oepc_rmo.oepc.i[970,983] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 22:38:19,131 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:38:19,173 INFO L206 MainTranslator]: Completed translation [2024-06-27 22:38:19,174 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:38:19 WrapperNode [2024-06-27 22:38:19,174 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 22:38:19,175 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 22:38:19,175 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 22:38:19,175 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 22:38:19,181 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 10:38:19" (1/1) ... [2024-06-27 22:38:19,223 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 10:38:19" (1/1) ... [2024-06-27 22:38:19,284 INFO L138 Inliner]: procedures = 175, calls = 42, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 139 [2024-06-27 22:38:19,285 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 22:38:19,286 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 22:38:19,286 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 22:38:19,286 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 22:38:19,295 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 10:38:19" (1/1) ... [2024-06-27 22:38:19,295 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 10:38:19" (1/1) ... [2024-06-27 22:38:19,315 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 10:38:19" (1/1) ... [2024-06-27 22:38:19,343 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 22:38:19,343 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 10:38:19" (1/1) ... [2024-06-27 22:38:19,344 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 10:38:19" (1/1) ... [2024-06-27 22:38:19,361 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 10:38:19" (1/1) ... [2024-06-27 22:38:19,364 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 10:38:19" (1/1) ... [2024-06-27 22:38:19,371 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 10:38:19" (1/1) ... [2024-06-27 22:38:19,373 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 10:38:19" (1/1) ... [2024-06-27 22:38:19,382 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 22:38:19,383 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 22:38:19,383 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 22:38:19,383 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 22:38:19,384 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 10:38:19" (1/1) ... [2024-06-27 22:38:19,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:38:19,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 22:38:19,408 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 22:38:19,418 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 22:38:19,444 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 22:38:19,445 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 22:38:19,445 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 22:38:19,445 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 22:38:19,445 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 22:38:19,445 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 22:38:19,445 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 22:38:19,446 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 22:38:19,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 22:38:19,446 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 22:38:19,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 22:38:19,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 22:38:19,448 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 22:38:19,583 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 22:38:19,585 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 22:38:20,078 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 22:38:20,079 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 22:38:20,256 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 22:38:20,257 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 22:38:20,257 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:38:20 BoogieIcfgContainer [2024-06-27 22:38:20,257 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 22:38:20,259 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 22:38:20,259 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 22:38:20,262 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 22:38:20,262 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 10:38:18" (1/4) ... [2024-06-27 22:38:20,263 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eb8ad26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 10:38:20, skipping insertion in model container [2024-06-27 22:38:20,263 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:38:18" (2/4) ... [2024-06-27 22:38:20,264 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eb8ad26 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 10:38:20, skipping insertion in model container [2024-06-27 22:38:20,264 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 10:38:19" (3/4) ... [2024-06-27 22:38:20,266 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eb8ad26 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 10:38:20, skipping insertion in model container [2024-06-27 22:38:20,266 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:38:20" (4/4) ... [2024-06-27 22:38:20,267 INFO L112 eAbstractionObserver]: Analyzing ICFG safe004_power.oepc_pso.oepc_rmo.oepc.i [2024-06-27 22:38:20,280 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 22:38:20,281 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-27 22:38:20,281 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 22:38:20,334 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 22:38:20,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 46 transitions, 104 flow [2024-06-27 22:38:20,393 INFO L124 PetriNetUnfolderBase]: 1/43 cut-off events. [2024-06-27 22:38:20,394 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:38:20,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 43 events. 1/43 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 72 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2024-06-27 22:38:20,398 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 46 transitions, 104 flow [2024-06-27 22:38:20,402 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 43 transitions, 95 flow [2024-06-27 22:38:20,433 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 22:38:20,453 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;@139f79fd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 22:38:20,454 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-27 22:38:20,457 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 22:38:20,457 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 22:38:20,457 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:38:20,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:38:20,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 22:38:20,458 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:38:20,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:38:20,476 INFO L85 PathProgramCache]: Analyzing trace with hash 422841619, now seen corresponding path program 1 times [2024-06-27 22:38:20,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:38:20,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714559356] [2024-06-27 22:38:20,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:38:20,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:38:20,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:38:22,085 INFO 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 22:38:22,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:38:22,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714559356] [2024-06-27 22:38:22,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714559356] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:38:22,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:38:22,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 22:38:22,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762792666] [2024-06-27 22:38:22,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:38:22,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 22:38:22,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:38:22,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 22:38:22,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 22:38:22,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-27 22:38:22,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 43 transitions, 95 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:22,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:38:22,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-27 22:38:22,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:38:23,046 INFO L124 PetriNetUnfolderBase]: 5026/7213 cut-off events. [2024-06-27 22:38:23,046 INFO L125 PetriNetUnfolderBase]: For 46/46 co-relation queries the response was YES. [2024-06-27 22:38:23,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14507 conditions, 7213 events. 5026/7213 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 40401 event pairs, 2159 based on Foata normal form. 252/7136 useless extension candidates. Maximal degree in co-relation 14495. Up to 7141 conditions per place. [2024-06-27 22:38:23,080 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 47 selfloop transitions, 4 changer transitions 0/60 dead transitions. [2024-06-27 22:38:23,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 60 transitions, 237 flow [2024-06-27 22:38:23,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 22:38:23,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 22:38:23,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2024-06-27 22:38:23,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6739130434782609 [2024-06-27 22:38:23,092 INFO L175 Difference]: Start difference. First operand has 52 places, 43 transitions, 95 flow. Second operand 3 states and 93 transitions. [2024-06-27 22:38:23,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 60 transitions, 237 flow [2024-06-27 22:38:23,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 60 transitions, 232 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 22:38:23,096 INFO L231 Difference]: Finished difference. Result has 52 places, 45 transitions, 122 flow [2024-06-27 22:38:23,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=52, PETRI_TRANSITIONS=45} [2024-06-27 22:38:23,099 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 0 predicate places. [2024-06-27 22:38:23,099 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 45 transitions, 122 flow [2024-06-27 22:38:23,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:23,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:38:23,100 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:38:23,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 22:38:23,100 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:38:23,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:38:23,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1671046383, now seen corresponding path program 1 times [2024-06-27 22:38:23,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:38:23,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954935687] [2024-06-27 22:38:23,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:38:23,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:38:23,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:38:24,026 INFO 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 22:38:24,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:38:24,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954935687] [2024-06-27 22:38:24,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954935687] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:38:24,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:38:24,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 22:38:24,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686129785] [2024-06-27 22:38:24,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:38:24,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 22:38:24,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:38:24,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 22:38:24,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 22:38:24,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-27 22:38:24,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 45 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:24,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:38:24,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-27 22:38:24,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:38:24,953 INFO L124 PetriNetUnfolderBase]: 5067/8012 cut-off events. [2024-06-27 22:38:24,953 INFO L125 PetriNetUnfolderBase]: For 970/970 co-relation queries the response was YES. [2024-06-27 22:38:24,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16975 conditions, 8012 events. 5067/8012 cut-off events. For 970/970 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 51066 event pairs, 2739 based on Foata normal form. 6/7488 useless extension candidates. Maximal degree in co-relation 16963. Up to 7163 conditions per place. [2024-06-27 22:38:24,984 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 59 selfloop transitions, 8 changer transitions 1/77 dead transitions. [2024-06-27 22:38:24,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 77 transitions, 340 flow [2024-06-27 22:38:24,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 22:38:24,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 22:38:24,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2024-06-27 22:38:24,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6304347826086957 [2024-06-27 22:38:24,986 INFO L175 Difference]: Start difference. First operand has 52 places, 45 transitions, 122 flow. Second operand 4 states and 116 transitions. [2024-06-27 22:38:24,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 77 transitions, 340 flow [2024-06-27 22:38:24,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 77 transitions, 334 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 22:38:24,988 INFO L231 Difference]: Finished difference. Result has 56 places, 52 transitions, 185 flow [2024-06-27 22:38:24,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=185, PETRI_PLACES=56, PETRI_TRANSITIONS=52} [2024-06-27 22:38:24,989 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 4 predicate places. [2024-06-27 22:38:24,989 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 52 transitions, 185 flow [2024-06-27 22:38:24,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:24,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:38:24,989 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:38:24,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 22:38:24,990 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:38:24,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:38:24,990 INFO L85 PathProgramCache]: Analyzing trace with hash -262828640, now seen corresponding path program 1 times [2024-06-27 22:38:24,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:38:24,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338810059] [2024-06-27 22:38:24,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:38:24,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:38:25,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:38:25,958 INFO 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 22:38:25,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:38:25,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338810059] [2024-06-27 22:38:25,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338810059] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:38:25,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:38:25,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:38:25,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164034690] [2024-06-27 22:38:25,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:38:25,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:38:25,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:38:25,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:38:25,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:38:25,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-27 22:38:25,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 52 transitions, 185 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:25,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:38:25,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-27 22:38:25,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:38:26,984 INFO L124 PetriNetUnfolderBase]: 5271/8319 cut-off events. [2024-06-27 22:38:26,985 INFO L125 PetriNetUnfolderBase]: For 3381/3381 co-relation queries the response was YES. [2024-06-27 22:38:26,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19589 conditions, 8319 events. 5271/8319 cut-off events. For 3381/3381 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 53397 event pairs, 2203 based on Foata normal form. 11/7804 useless extension candidates. Maximal degree in co-relation 19574. Up to 7046 conditions per place. [2024-06-27 22:38:27,031 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 79 selfloop transitions, 18 changer transitions 2/108 dead transitions. [2024-06-27 22:38:27,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 108 transitions, 551 flow [2024-06-27 22:38:27,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:38:27,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:38:27,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 155 transitions. [2024-06-27 22:38:27,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6739130434782609 [2024-06-27 22:38:27,033 INFO L175 Difference]: Start difference. First operand has 56 places, 52 transitions, 185 flow. Second operand 5 states and 155 transitions. [2024-06-27 22:38:27,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 108 transitions, 551 flow [2024-06-27 22:38:27,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 108 transitions, 540 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-06-27 22:38:27,038 INFO L231 Difference]: Finished difference. Result has 62 places, 64 transitions, 301 flow [2024-06-27 22:38:27,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=301, PETRI_PLACES=62, PETRI_TRANSITIONS=64} [2024-06-27 22:38:27,038 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 10 predicate places. [2024-06-27 22:38:27,039 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 64 transitions, 301 flow [2024-06-27 22:38:27,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:27,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:38:27,039 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:38:27,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 22:38:27,040 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:38:27,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:38:27,040 INFO L85 PathProgramCache]: Analyzing trace with hash 442248464, now seen corresponding path program 1 times [2024-06-27 22:38:27,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:38:27,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379777250] [2024-06-27 22:38:27,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:38:27,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:38:27,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:38:28,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:38:28,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:38:28,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379777250] [2024-06-27 22:38:28,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379777250] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:38:28,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:38:28,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:38:28,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720529675] [2024-06-27 22:38:28,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:38:28,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:38:28,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:38:28,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:38:28,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:38:28,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-27 22:38:28,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 64 transitions, 301 flow. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:28,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:38:28,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-27 22:38:28,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:38:29,522 INFO L124 PetriNetUnfolderBase]: 5431/8537 cut-off events. [2024-06-27 22:38:29,523 INFO L125 PetriNetUnfolderBase]: For 8437/8437 co-relation queries the response was YES. [2024-06-27 22:38:29,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23736 conditions, 8537 events. 5431/8537 cut-off events. For 8437/8437 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 54809 event pairs, 1883 based on Foata normal form. 11/8022 useless extension candidates. Maximal degree in co-relation 23717. Up to 7122 conditions per place. [2024-06-27 22:38:29,575 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 91 selfloop transitions, 24 changer transitions 3/127 dead transitions. [2024-06-27 22:38:29,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 127 transitions, 741 flow [2024-06-27 22:38:29,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:38:29,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:38:29,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 185 transitions. [2024-06-27 22:38:29,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6702898550724637 [2024-06-27 22:38:29,579 INFO L175 Difference]: Start difference. First operand has 62 places, 64 transitions, 301 flow. Second operand 6 states and 185 transitions. [2024-06-27 22:38:29,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 127 transitions, 741 flow [2024-06-27 22:38:29,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 127 transitions, 733 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-06-27 22:38:29,591 INFO L231 Difference]: Finished difference. Result has 68 places, 70 transitions, 392 flow [2024-06-27 22:38:29,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=392, PETRI_PLACES=68, PETRI_TRANSITIONS=70} [2024-06-27 22:38:29,592 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 16 predicate places. [2024-06-27 22:38:29,593 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 70 transitions, 392 flow [2024-06-27 22:38:29,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:29,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:38:29,593 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:38:29,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 22:38:29,593 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:38:29,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:38:29,594 INFO L85 PathProgramCache]: Analyzing trace with hash 824802239, now seen corresponding path program 1 times [2024-06-27 22:38:29,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:38:29,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68267117] [2024-06-27 22:38:29,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:38:29,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:38:29,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:38:31,248 INFO 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 22:38:31,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:38:31,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68267117] [2024-06-27 22:38:31,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68267117] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:38:31,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:38:31,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:38:31,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190121842] [2024-06-27 22:38:31,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:38:31,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:38:31,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:38:31,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:38:31,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:38:31,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-27 22:38:31,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 70 transitions, 392 flow. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 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 22:38:31,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:38:31,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-27 22:38:31,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:38:32,460 INFO L124 PetriNetUnfolderBase]: 5780/9134 cut-off events. [2024-06-27 22:38:32,460 INFO L125 PetriNetUnfolderBase]: For 13985/13985 co-relation queries the response was YES. [2024-06-27 22:38:32,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28002 conditions, 9134 events. 5780/9134 cut-off events. For 13985/13985 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 58262 event pairs, 2199 based on Foata normal form. 34/8640 useless extension candidates. Maximal degree in co-relation 27980. Up to 7500 conditions per place. [2024-06-27 22:38:32,508 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 132 selfloop transitions, 35 changer transitions 2/178 dead transitions. [2024-06-27 22:38:32,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 178 transitions, 1218 flow [2024-06-27 22:38:32,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:38:32,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:38:32,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 212 transitions. [2024-06-27 22:38:32,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6583850931677019 [2024-06-27 22:38:32,510 INFO L175 Difference]: Start difference. First operand has 68 places, 70 transitions, 392 flow. Second operand 7 states and 212 transitions. [2024-06-27 22:38:32,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 178 transitions, 1218 flow [2024-06-27 22:38:32,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 178 transitions, 1128 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-27 22:38:32,518 INFO L231 Difference]: Finished difference. Result has 74 places, 105 transitions, 696 flow [2024-06-27 22:38:32,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=696, PETRI_PLACES=74, PETRI_TRANSITIONS=105} [2024-06-27 22:38:32,519 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 22 predicate places. [2024-06-27 22:38:32,519 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 105 transitions, 696 flow [2024-06-27 22:38:32,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 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 22:38:32,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:38:32,519 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:38:32,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 22:38:32,520 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:38:32,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:38:32,520 INFO L85 PathProgramCache]: Analyzing trace with hash -246359271, now seen corresponding path program 1 times [2024-06-27 22:38:32,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:38:32,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676858228] [2024-06-27 22:38:32,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:38:32,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:38:32,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:38:33,722 INFO 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 22:38:33,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:38:33,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676858228] [2024-06-27 22:38:33,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676858228] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:38:33,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:38:33,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:38:33,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301054347] [2024-06-27 22:38:33,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:38:33,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:38:33,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:38:33,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:38:33,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:38:33,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:38:33,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 105 transitions, 696 flow. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:33,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:38:33,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:38:33,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:38:35,131 INFO L124 PetriNetUnfolderBase]: 6459/10101 cut-off events. [2024-06-27 22:38:35,131 INFO L125 PetriNetUnfolderBase]: For 24528/24528 co-relation queries the response was YES. [2024-06-27 22:38:35,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36063 conditions, 10101 events. 6459/10101 cut-off events. For 24528/24528 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 63824 event pairs, 2866 based on Foata normal form. 5/9546 useless extension candidates. Maximal degree in co-relation 36035. Up to 9073 conditions per place. [2024-06-27 22:38:35,182 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 118 selfloop transitions, 19 changer transitions 0/144 dead transitions. [2024-06-27 22:38:35,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 144 transitions, 1160 flow [2024-06-27 22:38:35,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:38:35,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:38:35,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 123 transitions. [2024-06-27 22:38:35,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5347826086956522 [2024-06-27 22:38:35,183 INFO L175 Difference]: Start difference. First operand has 74 places, 105 transitions, 696 flow. Second operand 5 states and 123 transitions. [2024-06-27 22:38:35,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 144 transitions, 1160 flow [2024-06-27 22:38:35,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 144 transitions, 1144 flow, removed 8 selfloop flow, removed 0 redundant places. [2024-06-27 22:38:35,198 INFO L231 Difference]: Finished difference. Result has 80 places, 112 transitions, 813 flow [2024-06-27 22:38:35,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=680, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=813, PETRI_PLACES=80, PETRI_TRANSITIONS=112} [2024-06-27 22:38:35,199 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 28 predicate places. [2024-06-27 22:38:35,199 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 112 transitions, 813 flow [2024-06-27 22:38:35,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:35,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:38:35,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:38:35,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 22:38:35,200 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:38:35,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:38:35,200 INFO L85 PathProgramCache]: Analyzing trace with hash 952538748, now seen corresponding path program 1 times [2024-06-27 22:38:35,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:38:35,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38278301] [2024-06-27 22:38:35,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:38:35,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:38:35,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:38:36,598 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 22:38:36,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:38:36,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38278301] [2024-06-27 22:38:36,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38278301] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:38:36,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:38:36,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:38:36,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293371811] [2024-06-27 22:38:36,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:38:36,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:38:36,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:38:36,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:38:36,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:38:36,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:38:36,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 112 transitions, 813 flow. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:36,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:38:36,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:38:36,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:38:38,073 INFO L124 PetriNetUnfolderBase]: 6471/10123 cut-off events. [2024-06-27 22:38:38,073 INFO L125 PetriNetUnfolderBase]: For 29765/29765 co-relation queries the response was YES. [2024-06-27 22:38:38,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37725 conditions, 10123 events. 6471/10123 cut-off events. For 29765/29765 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 63962 event pairs, 2840 based on Foata normal form. 4/9559 useless extension candidates. Maximal degree in co-relation 37691. Up to 9171 conditions per place. [2024-06-27 22:38:38,127 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 120 selfloop transitions, 24 changer transitions 0/151 dead transitions. [2024-06-27 22:38:38,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 151 transitions, 1270 flow [2024-06-27 22:38:38,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:38:38,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:38:38,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 151 transitions. [2024-06-27 22:38:38,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.468944099378882 [2024-06-27 22:38:38,128 INFO L175 Difference]: Start difference. First operand has 80 places, 112 transitions, 813 flow. Second operand 7 states and 151 transitions. [2024-06-27 22:38:38,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 151 transitions, 1270 flow [2024-06-27 22:38:38,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 151 transitions, 1232 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-06-27 22:38:38,143 INFO L231 Difference]: Finished difference. Result has 88 places, 124 transitions, 964 flow [2024-06-27 22:38:38,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=783, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=964, PETRI_PLACES=88, PETRI_TRANSITIONS=124} [2024-06-27 22:38:38,144 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 36 predicate places. [2024-06-27 22:38:38,144 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 124 transitions, 964 flow [2024-06-27 22:38:38,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:38,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:38:38,144 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:38:38,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 22:38:38,145 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:38:38,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:38:38,145 INFO L85 PathProgramCache]: Analyzing trace with hash -808171895, now seen corresponding path program 1 times [2024-06-27 22:38:38,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:38:38,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960612293] [2024-06-27 22:38:38,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:38:38,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:38:38,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:38:39,088 INFO 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 22:38:39,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:38:39,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960612293] [2024-06-27 22:38:39,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960612293] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:38:39,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:38:39,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:38:39,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244651709] [2024-06-27 22:38:39,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:38:39,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:38:39,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:38:39,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:38:39,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:38:39,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:38:39,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 124 transitions, 964 flow. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:39,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:38:39,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:38:39,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:38:40,410 INFO L124 PetriNetUnfolderBase]: 6589/10297 cut-off events. [2024-06-27 22:38:40,410 INFO L125 PetriNetUnfolderBase]: For 34101/34103 co-relation queries the response was YES. [2024-06-27 22:38:40,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39992 conditions, 10297 events. 6589/10297 cut-off events. For 34101/34103 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 64803 event pairs, 2687 based on Foata normal form. 6/9737 useless extension candidates. Maximal degree in co-relation 39952. Up to 9286 conditions per place. [2024-06-27 22:38:40,480 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 135 selfloop transitions, 24 changer transitions 0/166 dead transitions. [2024-06-27 22:38:40,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 166 transitions, 1521 flow [2024-06-27 22:38:40,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:38:40,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:38:40,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 137 transitions. [2024-06-27 22:38:40,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4963768115942029 [2024-06-27 22:38:40,484 INFO L175 Difference]: Start difference. First operand has 88 places, 124 transitions, 964 flow. Second operand 6 states and 137 transitions. [2024-06-27 22:38:40,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 166 transitions, 1521 flow [2024-06-27 22:38:40,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 166 transitions, 1445 flow, removed 19 selfloop flow, removed 3 redundant places. [2024-06-27 22:38:40,512 INFO L231 Difference]: Finished difference. Result has 93 places, 141 transitions, 1123 flow [2024-06-27 22:38:40,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=896, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1123, PETRI_PLACES=93, PETRI_TRANSITIONS=141} [2024-06-27 22:38:40,514 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 41 predicate places. [2024-06-27 22:38:40,514 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 141 transitions, 1123 flow [2024-06-27 22:38:40,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:40,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:38:40,515 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:38:40,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 22:38:40,516 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:38:40,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:38:40,516 INFO L85 PathProgramCache]: Analyzing trace with hash -528034153, now seen corresponding path program 2 times [2024-06-27 22:38:40,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:38:40,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470929521] [2024-06-27 22:38:40,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:38:40,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:38:40,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:38:41,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:38:41,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:38:41,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470929521] [2024-06-27 22:38:41,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470929521] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:38:41,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:38:41,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:38:41,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491326838] [2024-06-27 22:38:41,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:38:41,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:38:41,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:38:41,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:38:41,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:38:41,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:38:41,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 141 transitions, 1123 flow. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:41,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:38:41,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:38:41,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:38:42,840 INFO L124 PetriNetUnfolderBase]: 6581/10282 cut-off events. [2024-06-27 22:38:42,840 INFO L125 PetriNetUnfolderBase]: For 36953/36953 co-relation queries the response was YES. [2024-06-27 22:38:42,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40823 conditions, 10282 events. 6581/10282 cut-off events. For 36953/36953 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 64641 event pairs, 2708 based on Foata normal form. 2/9718 useless extension candidates. Maximal degree in co-relation 40779. Up to 9354 conditions per place. [2024-06-27 22:38:42,889 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 141 selfloop transitions, 16 changer transitions 0/164 dead transitions. [2024-06-27 22:38:42,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 164 transitions, 1518 flow [2024-06-27 22:38:42,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:38:42,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:38:42,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 130 transitions. [2024-06-27 22:38:42,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47101449275362317 [2024-06-27 22:38:42,894 INFO L175 Difference]: Start difference. First operand has 93 places, 141 transitions, 1123 flow. Second operand 6 states and 130 transitions. [2024-06-27 22:38:42,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 164 transitions, 1518 flow [2024-06-27 22:38:42,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 164 transitions, 1493 flow, removed 11 selfloop flow, removed 1 redundant places. [2024-06-27 22:38:42,925 INFO L231 Difference]: Finished difference. Result has 98 places, 144 transitions, 1178 flow [2024-06-27 22:38:42,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1104, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1178, PETRI_PLACES=98, PETRI_TRANSITIONS=144} [2024-06-27 22:38:42,926 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 46 predicate places. [2024-06-27 22:38:42,926 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 144 transitions, 1178 flow [2024-06-27 22:38:42,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:42,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:38:42,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:38:42,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 22:38:42,927 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:38:42,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:38:42,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1202068443, now seen corresponding path program 3 times [2024-06-27 22:38:42,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:38:42,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440851140] [2024-06-27 22:38:42,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:38:42,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:38:42,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:38:44,337 INFO 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 22:38:44,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:38:44,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440851140] [2024-06-27 22:38:44,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440851140] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:38:44,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:38:44,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:38:44,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836273300] [2024-06-27 22:38:44,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:38:44,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:38:44,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:38:44,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:38:44,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:38:44,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:38:44,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 144 transitions, 1178 flow. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:44,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:38:44,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:38:44,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:38:46,343 INFO L124 PetriNetUnfolderBase]: 6673/10413 cut-off events. [2024-06-27 22:38:46,344 INFO L125 PetriNetUnfolderBase]: For 40116/40120 co-relation queries the response was YES. [2024-06-27 22:38:46,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41858 conditions, 10413 events. 6673/10413 cut-off events. For 40116/40120 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 65414 event pairs, 2797 based on Foata normal form. 8/9855 useless extension candidates. Maximal degree in co-relation 41811. Up to 9267 conditions per place. [2024-06-27 22:38:46,428 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 146 selfloop transitions, 57 changer transitions 0/210 dead transitions. [2024-06-27 22:38:46,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 210 transitions, 2019 flow [2024-06-27 22:38:46,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:38:46,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:38:46,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 159 transitions. [2024-06-27 22:38:46,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4937888198757764 [2024-06-27 22:38:46,430 INFO L175 Difference]: Start difference. First operand has 98 places, 144 transitions, 1178 flow. Second operand 7 states and 159 transitions. [2024-06-27 22:38:46,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 210 transitions, 2019 flow [2024-06-27 22:38:46,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 210 transitions, 1982 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-27 22:38:46,477 INFO L231 Difference]: Finished difference. Result has 104 places, 179 transitions, 1667 flow [2024-06-27 22:38:46,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1149, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1667, PETRI_PLACES=104, PETRI_TRANSITIONS=179} [2024-06-27 22:38:46,478 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 52 predicate places. [2024-06-27 22:38:46,478 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 179 transitions, 1667 flow [2024-06-27 22:38:46,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:46,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:38:46,479 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:38:46,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 22:38:46,479 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:38:46,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:38:46,480 INFO L85 PathProgramCache]: Analyzing trace with hash 716476058, now seen corresponding path program 1 times [2024-06-27 22:38:46,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:38:46,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535749030] [2024-06-27 22:38:46,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:38:46,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:38:46,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:38:47,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:38:47,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:38:47,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535749030] [2024-06-27 22:38:47,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535749030] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:38:47,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:38:47,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:38:47,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003674570] [2024-06-27 22:38:47,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:38:47,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:38:47,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:38:47,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:38:47,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:38:47,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:38:47,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 179 transitions, 1667 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:47,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:38:47,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:38:47,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:38:49,003 INFO L124 PetriNetUnfolderBase]: 6946/10828 cut-off events. [2024-06-27 22:38:49,003 INFO L125 PetriNetUnfolderBase]: For 47169/47169 co-relation queries the response was YES. [2024-06-27 22:38:49,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45284 conditions, 10828 events. 6946/10828 cut-off events. For 47169/47169 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 67663 event pairs, 2597 based on Foata normal form. 4/10257 useless extension candidates. Maximal degree in co-relation 45234. Up to 9397 conditions per place. [2024-06-27 22:38:49,083 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 176 selfloop transitions, 75 changer transitions 2/260 dead transitions. [2024-06-27 22:38:49,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 260 transitions, 2746 flow [2024-06-27 22:38:49,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:38:49,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:38:49,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2024-06-27 22:38:49,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5403726708074534 [2024-06-27 22:38:49,085 INFO L175 Difference]: Start difference. First operand has 104 places, 179 transitions, 1667 flow. Second operand 7 states and 174 transitions. [2024-06-27 22:38:49,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 260 transitions, 2746 flow [2024-06-27 22:38:49,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 260 transitions, 2724 flow, removed 10 selfloop flow, removed 1 redundant places. [2024-06-27 22:38:49,138 INFO L231 Difference]: Finished difference. Result has 112 places, 211 transitions, 2198 flow [2024-06-27 22:38:49,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1645, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2198, PETRI_PLACES=112, PETRI_TRANSITIONS=211} [2024-06-27 22:38:49,139 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 60 predicate places. [2024-06-27 22:38:49,139 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 211 transitions, 2198 flow [2024-06-27 22:38:49,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:49,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:38:49,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:38:49,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 22:38:49,140 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:38:49,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:38:49,140 INFO L85 PathProgramCache]: Analyzing trace with hash 811077448, now seen corresponding path program 2 times [2024-06-27 22:38:49,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:38:49,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896026317] [2024-06-27 22:38:49,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:38:49,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:38:49,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:38:50,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:38:50,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:38:50,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896026317] [2024-06-27 22:38:50,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896026317] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:38:50,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:38:50,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:38:50,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664727176] [2024-06-27 22:38:50,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:38:50,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:38:50,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:38:50,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:38:50,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:38:50,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:38:50,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 211 transitions, 2198 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:50,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:38:50,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:38:50,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:38:51,605 INFO L124 PetriNetUnfolderBase]: 6992/10875 cut-off events. [2024-06-27 22:38:51,605 INFO L125 PetriNetUnfolderBase]: For 58843/58843 co-relation queries the response was YES. [2024-06-27 22:38:51,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49270 conditions, 10875 events. 6992/10875 cut-off events. For 58843/58843 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 68069 event pairs, 2690 based on Foata normal form. 2/10299 useless extension candidates. Maximal degree in co-relation 49215. Up to 9868 conditions per place. [2024-06-27 22:38:51,687 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 212 selfloop transitions, 36 changer transitions 0/255 dead transitions. [2024-06-27 22:38:51,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 255 transitions, 2910 flow [2024-06-27 22:38:51,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:38:51,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:38:51,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 159 transitions. [2024-06-27 22:38:51,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4937888198757764 [2024-06-27 22:38:51,689 INFO L175 Difference]: Start difference. First operand has 112 places, 211 transitions, 2198 flow. Second operand 7 states and 159 transitions. [2024-06-27 22:38:51,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 255 transitions, 2910 flow [2024-06-27 22:38:51,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 255 transitions, 2859 flow, removed 14 selfloop flow, removed 2 redundant places. [2024-06-27 22:38:51,774 INFO L231 Difference]: Finished difference. Result has 119 places, 225 transitions, 2398 flow [2024-06-27 22:38:51,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2150, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2398, PETRI_PLACES=119, PETRI_TRANSITIONS=225} [2024-06-27 22:38:51,775 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 67 predicate places. [2024-06-27 22:38:51,775 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 225 transitions, 2398 flow [2024-06-27 22:38:51,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:51,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:38:51,775 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:38:51,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 22:38:51,776 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:38:51,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:38:51,776 INFO L85 PathProgramCache]: Analyzing trace with hash -2014568146, now seen corresponding path program 3 times [2024-06-27 22:38:51,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:38:51,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340297486] [2024-06-27 22:38:51,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:38:51,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:38:51,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:38:52,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:38:52,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:38:52,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340297486] [2024-06-27 22:38:52,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340297486] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:38:52,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:38:52,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:38:52,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674758712] [2024-06-27 22:38:52,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:38:52,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:38:52,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:38:52,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:38:52,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:38:52,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:38:52,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 225 transitions, 2398 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:52,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:38:52,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:38:52,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:38:54,466 INFO L124 PetriNetUnfolderBase]: 7006/10900 cut-off events. [2024-06-27 22:38:54,466 INFO L125 PetriNetUnfolderBase]: For 66777/66777 co-relation queries the response was YES. [2024-06-27 22:38:54,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51352 conditions, 10900 events. 7006/10900 cut-off events. For 66777/66777 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 68181 event pairs, 2703 based on Foata normal form. 2/10322 useless extension candidates. Maximal degree in co-relation 51292. Up to 9810 conditions per place. [2024-06-27 22:38:54,538 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 221 selfloop transitions, 46 changer transitions 1/275 dead transitions. [2024-06-27 22:38:54,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 275 transitions, 3313 flow [2024-06-27 22:38:54,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:38:54,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:38:54,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 162 transitions. [2024-06-27 22:38:54,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5031055900621118 [2024-06-27 22:38:54,539 INFO L175 Difference]: Start difference. First operand has 119 places, 225 transitions, 2398 flow. Second operand 7 states and 162 transitions. [2024-06-27 22:38:54,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 275 transitions, 3313 flow [2024-06-27 22:38:54,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 275 transitions, 3232 flow, removed 22 selfloop flow, removed 3 redundant places. [2024-06-27 22:38:54,613 INFO L231 Difference]: Finished difference. Result has 124 places, 239 transitions, 2650 flow [2024-06-27 22:38:54,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2317, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2650, PETRI_PLACES=124, PETRI_TRANSITIONS=239} [2024-06-27 22:38:54,614 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 72 predicate places. [2024-06-27 22:38:54,614 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 239 transitions, 2650 flow [2024-06-27 22:38:54,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:54,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:38:54,614 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:38:54,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 22:38:54,615 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:38:54,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:38:54,615 INFO L85 PathProgramCache]: Analyzing trace with hash 820352970, now seen corresponding path program 1 times [2024-06-27 22:38:54,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:38:54,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395129063] [2024-06-27 22:38:54,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:38:54,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:38:54,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:38:54,788 INFO 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 22:38:54,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:38:54,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395129063] [2024-06-27 22:38:54,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395129063] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:38:54,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:38:54,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:38:54,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110584484] [2024-06-27 22:38:54,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:38:54,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:38:54,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:38:54,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:38:54,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:38:54,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 46 [2024-06-27 22:38:54,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 239 transitions, 2650 flow. Second operand has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:54,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:38:54,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 46 [2024-06-27 22:38:54,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:38:55,833 INFO L124 PetriNetUnfolderBase]: 4387/7581 cut-off events. [2024-06-27 22:38:55,834 INFO L125 PetriNetUnfolderBase]: For 47405/48416 co-relation queries the response was YES. [2024-06-27 22:38:55,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34154 conditions, 7581 events. 4387/7581 cut-off events. For 47405/48416 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 54090 event pairs, 1599 based on Foata normal form. 191/7272 useless extension candidates. Maximal degree in co-relation 34091. Up to 5009 conditions per place. [2024-06-27 22:38:55,907 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 138 selfloop transitions, 16 changer transitions 0/253 dead transitions. [2024-06-27 22:38:55,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 253 transitions, 3014 flow [2024-06-27 22:38:55,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 22:38:55,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 22:38:55,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 121 transitions. [2024-06-27 22:38:55,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.657608695652174 [2024-06-27 22:38:55,911 INFO L175 Difference]: Start difference. First operand has 124 places, 239 transitions, 2650 flow. Second operand 4 states and 121 transitions. [2024-06-27 22:38:55,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 253 transitions, 3014 flow [2024-06-27 22:38:55,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 253 transitions, 2933 flow, removed 27 selfloop flow, removed 3 redundant places. [2024-06-27 22:38:55,996 INFO L231 Difference]: Finished difference. Result has 123 places, 235 transitions, 2567 flow [2024-06-27 22:38:55,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2535, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2567, PETRI_PLACES=123, PETRI_TRANSITIONS=235} [2024-06-27 22:38:55,997 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 71 predicate places. [2024-06-27 22:38:55,997 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 235 transitions, 2567 flow [2024-06-27 22:38:55,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:55,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:38:55,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:38:55,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 22:38:55,998 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:38:55,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:38:55,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1397992214, now seen corresponding path program 4 times [2024-06-27 22:38:55,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:38:55,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101766224] [2024-06-27 22:38:55,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:38:55,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:38:56,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:38:57,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:38:57,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:38:57,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101766224] [2024-06-27 22:38:57,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101766224] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:38:57,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:38:57,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:38:57,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227458728] [2024-06-27 22:38:57,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:38:57,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:38:57,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:38:57,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:38:57,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:38:57,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:38:57,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 235 transitions, 2567 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:57,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:38:57,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:38:57,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:38:59,703 INFO L124 PetriNetUnfolderBase]: 6709/10425 cut-off events. [2024-06-27 22:38:59,703 INFO L125 PetriNetUnfolderBase]: For 79535/79537 co-relation queries the response was YES. [2024-06-27 22:38:59,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51706 conditions, 10425 events. 6709/10425 cut-off events. For 79535/79537 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 63690 event pairs, 1872 based on Foata normal form. 6/10156 useless extension candidates. Maximal degree in co-relation 51642. Up to 8303 conditions per place. [2024-06-27 22:38:59,780 INFO L140 encePairwiseOnDemand]: 28/46 looper letters, 212 selfloop transitions, 140 changer transitions 1/360 dead transitions. [2024-06-27 22:38:59,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 360 transitions, 4419 flow [2024-06-27 22:38:59,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:38:59,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:38:59,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-27 22:38:59,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5353260869565217 [2024-06-27 22:38:59,783 INFO L175 Difference]: Start difference. First operand has 123 places, 235 transitions, 2567 flow. Second operand 8 states and 197 transitions. [2024-06-27 22:38:59,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 360 transitions, 4419 flow [2024-06-27 22:38:59,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 360 transitions, 4387 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 22:38:59,876 INFO L231 Difference]: Finished difference. Result has 131 places, 297 transitions, 3644 flow [2024-06-27 22:38:59,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2535, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3644, PETRI_PLACES=131, PETRI_TRANSITIONS=297} [2024-06-27 22:38:59,877 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 79 predicate places. [2024-06-27 22:38:59,877 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 297 transitions, 3644 flow [2024-06-27 22:38:59,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:59,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:38:59,878 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:38:59,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 22:38:59,878 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:38:59,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:38:59,878 INFO L85 PathProgramCache]: Analyzing trace with hash 811087337, now seen corresponding path program 1 times [2024-06-27 22:38:59,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:38:59,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455668815] [2024-06-27 22:38:59,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:38:59,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:38:59,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:39:01,433 INFO 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 22:39:01,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:39:01,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455668815] [2024-06-27 22:39:01,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455668815] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:39:01,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:39:01,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:39:01,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708255656] [2024-06-27 22:39:01,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:39:01,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:39:01,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:39:01,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:39:01,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:39:01,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:39:01,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 297 transitions, 3644 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 22:39:01,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:39:01,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:39:01,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:39:03,181 INFO L124 PetriNetUnfolderBase]: 5998/9428 cut-off events. [2024-06-27 22:39:03,181 INFO L125 PetriNetUnfolderBase]: For 94606/94606 co-relation queries the response was YES. [2024-06-27 22:39:03,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52557 conditions, 9428 events. 5998/9428 cut-off events. For 94606/94606 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 57616 event pairs, 1851 based on Foata normal form. 4/9157 useless extension candidates. Maximal degree in co-relation 52489. Up to 8439 conditions per place. [2024-06-27 22:39:03,272 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 293 selfloop transitions, 33 changer transitions 0/333 dead transitions. [2024-06-27 22:39:03,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 333 transitions, 4508 flow [2024-06-27 22:39:03,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:39:03,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:39:03,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 179 transitions. [2024-06-27 22:39:03,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4323671497584541 [2024-06-27 22:39:03,274 INFO L175 Difference]: Start difference. First operand has 131 places, 297 transitions, 3644 flow. Second operand 9 states and 179 transitions. [2024-06-27 22:39:03,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 333 transitions, 4508 flow [2024-06-27 22:39:03,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 333 transitions, 4404 flow, removed 51 selfloop flow, removed 1 redundant places. [2024-06-27 22:39:03,443 INFO L231 Difference]: Finished difference. Result has 138 places, 299 transitions, 3661 flow [2024-06-27 22:39:03,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3556, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3661, PETRI_PLACES=138, PETRI_TRANSITIONS=299} [2024-06-27 22:39:03,444 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 86 predicate places. [2024-06-27 22:39:03,444 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 299 transitions, 3661 flow [2024-06-27 22:39:03,444 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 22:39:03,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:39:03,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:39:03,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 22:39:03,445 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:39:03,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:39:03,445 INFO L85 PathProgramCache]: Analyzing trace with hash 732107144, now seen corresponding path program 1 times [2024-06-27 22:39:03,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:39:03,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308035226] [2024-06-27 22:39:03,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:39:03,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:39:03,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:39:04,868 INFO 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 22:39:04,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:39:04,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308035226] [2024-06-27 22:39:04,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308035226] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:39:04,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:39:04,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:39:04,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552066754] [2024-06-27 22:39:04,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:39:04,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:39:04,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:39:04,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:39:04,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:39:04,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:39:04,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 299 transitions, 3661 flow. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:04,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:39:04,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:39:04,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:39:06,627 INFO L124 PetriNetUnfolderBase]: 6363/9961 cut-off events. [2024-06-27 22:39:06,627 INFO L125 PetriNetUnfolderBase]: For 104846/104848 co-relation queries the response was YES. [2024-06-27 22:39:06,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56074 conditions, 9961 events. 6363/9961 cut-off events. For 104846/104848 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 60930 event pairs, 1702 based on Foata normal form. 4/9688 useless extension candidates. Maximal degree in co-relation 56003. Up to 8143 conditions per place. [2024-06-27 22:39:06,717 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 275 selfloop transitions, 111 changer transitions 0/393 dead transitions. [2024-06-27 22:39:06,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 393 transitions, 5417 flow [2024-06-27 22:39:06,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:39:06,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:39:06,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 180 transitions. [2024-06-27 22:39:06,720 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4891304347826087 [2024-06-27 22:39:06,721 INFO L175 Difference]: Start difference. First operand has 138 places, 299 transitions, 3661 flow. Second operand 8 states and 180 transitions. [2024-06-27 22:39:06,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 393 transitions, 5417 flow [2024-06-27 22:39:06,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 393 transitions, 5322 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-27 22:39:06,887 INFO L231 Difference]: Finished difference. Result has 140 places, 337 transitions, 4332 flow [2024-06-27 22:39:06,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3566, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4332, PETRI_PLACES=140, PETRI_TRANSITIONS=337} [2024-06-27 22:39:06,888 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 88 predicate places. [2024-06-27 22:39:06,888 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 337 transitions, 4332 flow [2024-06-27 22:39:06,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:06,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:39:06,889 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:39:06,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 22:39:06,889 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:39:06,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:39:06,889 INFO L85 PathProgramCache]: Analyzing trace with hash 732197354, now seen corresponding path program 2 times [2024-06-27 22:39:06,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:39:06,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121270621] [2024-06-27 22:39:06,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:39:06,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:39:06,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:39:08,381 INFO 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 22:39:08,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:39:08,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121270621] [2024-06-27 22:39:08,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121270621] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:39:08,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:39:08,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:39:08,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843415108] [2024-06-27 22:39:08,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:39:08,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:39:08,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:39:08,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:39:08,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:39:08,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:39:08,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 337 transitions, 4332 flow. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:08,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:39:08,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:39:08,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:39:10,131 INFO L124 PetriNetUnfolderBase]: 6504/10180 cut-off events. [2024-06-27 22:39:10,131 INFO L125 PetriNetUnfolderBase]: For 121931/121933 co-relation queries the response was YES. [2024-06-27 22:39:10,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60442 conditions, 10180 events. 6504/10180 cut-off events. For 121931/121933 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 62482 event pairs, 1719 based on Foata normal form. 9/9905 useless extension candidates. Maximal degree in co-relation 60371. Up to 8709 conditions per place. [2024-06-27 22:39:10,228 INFO L140 encePairwiseOnDemand]: 30/46 looper letters, 306 selfloop transitions, 111 changer transitions 0/424 dead transitions. [2024-06-27 22:39:10,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 424 transitions, 6198 flow [2024-06-27 22:39:10,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:39:10,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:39:10,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-27 22:39:10,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5186335403726708 [2024-06-27 22:39:10,230 INFO L175 Difference]: Start difference. First operand has 140 places, 337 transitions, 4332 flow. Second operand 7 states and 167 transitions. [2024-06-27 22:39:10,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 424 transitions, 6198 flow [2024-06-27 22:39:10,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 424 transitions, 6031 flow, removed 72 selfloop flow, removed 3 redundant places. [2024-06-27 22:39:10,472 INFO L231 Difference]: Finished difference. Result has 146 places, 377 transitions, 5212 flow [2024-06-27 22:39:10,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4199, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5212, PETRI_PLACES=146, PETRI_TRANSITIONS=377} [2024-06-27 22:39:10,472 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 94 predicate places. [2024-06-27 22:39:10,473 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 377 transitions, 5212 flow [2024-06-27 22:39:10,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:10,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:39:10,473 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:39:10,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 22:39:10,473 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:39:10,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:39:10,474 INFO L85 PathProgramCache]: Analyzing trace with hash 735916579, now seen corresponding path program 1 times [2024-06-27 22:39:10,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:39:10,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477330051] [2024-06-27 22:39:10,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:39:10,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:39:10,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:39:11,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:39:11,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:39:11,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477330051] [2024-06-27 22:39:11,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477330051] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:39:11,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:39:11,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:39:11,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145564026] [2024-06-27 22:39:11,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:39:11,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:39:11,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:39:11,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:39:11,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:39:11,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:39:11,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 377 transitions, 5212 flow. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:11,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:39:11,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:39:11,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:39:13,345 INFO L124 PetriNetUnfolderBase]: 6539/10222 cut-off events. [2024-06-27 22:39:13,346 INFO L125 PetriNetUnfolderBase]: For 133366/133370 co-relation queries the response was YES. [2024-06-27 22:39:13,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62744 conditions, 10222 events. 6539/10222 cut-off events. For 133366/133370 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 62703 event pairs, 1716 based on Foata normal form. 5/9943 useless extension candidates. Maximal degree in co-relation 62669. Up to 8840 conditions per place. [2024-06-27 22:39:13,469 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 307 selfloop transitions, 121 changer transitions 0/435 dead transitions. [2024-06-27 22:39:13,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 435 transitions, 6755 flow [2024-06-27 22:39:13,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:39:13,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:39:13,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2024-06-27 22:39:13,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5217391304347826 [2024-06-27 22:39:13,471 INFO L175 Difference]: Start difference. First operand has 146 places, 377 transitions, 5212 flow. Second operand 7 states and 168 transitions. [2024-06-27 22:39:13,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 435 transitions, 6755 flow [2024-06-27 22:39:13,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 435 transitions, 6567 flow, removed 33 selfloop flow, removed 3 redundant places. [2024-06-27 22:39:13,746 INFO L231 Difference]: Finished difference. Result has 152 places, 396 transitions, 5754 flow [2024-06-27 22:39:13,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5054, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5754, PETRI_PLACES=152, PETRI_TRANSITIONS=396} [2024-06-27 22:39:13,747 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 100 predicate places. [2024-06-27 22:39:13,747 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 396 transitions, 5754 flow [2024-06-27 22:39:13,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:13,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:39:13,747 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:39:13,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 22:39:13,747 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:39:13,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:39:13,748 INFO L85 PathProgramCache]: Analyzing trace with hash 735922376, now seen corresponding path program 1 times [2024-06-27 22:39:13,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:39:13,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537902558] [2024-06-27 22:39:13,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:39:13,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:39:13,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:39:15,054 INFO 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 22:39:15,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:39:15,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537902558] [2024-06-27 22:39:15,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537902558] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:39:15,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:39:15,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:39:15,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928863269] [2024-06-27 22:39:15,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:39:15,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:39:15,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:39:15,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:39:15,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:39:15,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:39:15,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 396 transitions, 5754 flow. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:15,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:39:15,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:39:15,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:39:16,945 INFO L124 PetriNetUnfolderBase]: 6553/10282 cut-off events. [2024-06-27 22:39:16,945 INFO L125 PetriNetUnfolderBase]: For 142806/142808 co-relation queries the response was YES. [2024-06-27 22:39:16,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63726 conditions, 10282 events. 6553/10282 cut-off events. For 142806/142808 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 63235 event pairs, 1844 based on Foata normal form. 6/9993 useless extension candidates. Maximal degree in co-relation 63648. Up to 8593 conditions per place. [2024-06-27 22:39:17,028 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 310 selfloop transitions, 132 changer transitions 0/449 dead transitions. [2024-06-27 22:39:17,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 449 transitions, 7157 flow [2024-06-27 22:39:17,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:39:17,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:39:17,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-27 22:39:17,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5186335403726708 [2024-06-27 22:39:17,030 INFO L175 Difference]: Start difference. First operand has 152 places, 396 transitions, 5754 flow. Second operand 7 states and 167 transitions. [2024-06-27 22:39:17,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 449 transitions, 7157 flow [2024-06-27 22:39:17,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 449 transitions, 6948 flow, removed 45 selfloop flow, removed 3 redundant places. [2024-06-27 22:39:17,298 INFO L231 Difference]: Finished difference. Result has 157 places, 405 transitions, 6011 flow [2024-06-27 22:39:17,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5547, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6011, PETRI_PLACES=157, PETRI_TRANSITIONS=405} [2024-06-27 22:39:17,299 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 105 predicate places. [2024-06-27 22:39:17,299 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 405 transitions, 6011 flow [2024-06-27 22:39:17,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:17,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:39:17,300 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:39:17,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 22:39:17,300 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:39:17,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:39:17,300 INFO L85 PathProgramCache]: Analyzing trace with hash 735922159, now seen corresponding path program 2 times [2024-06-27 22:39:17,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:39:17,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294715781] [2024-06-27 22:39:17,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:39:17,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:39:17,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:39:18,321 INFO 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 22:39:18,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:39:18,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294715781] [2024-06-27 22:39:18,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294715781] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:39:18,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:39:18,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:39:18,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421211841] [2024-06-27 22:39:18,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:39:18,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:39:18,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:39:18,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:39:18,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:39:18,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:39:18,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 405 transitions, 6011 flow. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:18,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:39:18,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:39:18,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:39:20,129 INFO L124 PetriNetUnfolderBase]: 6588/10232 cut-off events. [2024-06-27 22:39:20,129 INFO L125 PetriNetUnfolderBase]: For 155166/155168 co-relation queries the response was YES. [2024-06-27 22:39:20,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65676 conditions, 10232 events. 6588/10232 cut-off events. For 155166/155168 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 62123 event pairs, 1729 based on Foata normal form. 3/9972 useless extension candidates. Maximal degree in co-relation 65596. Up to 8898 conditions per place. [2024-06-27 22:39:20,235 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 315 selfloop transitions, 126 changer transitions 0/448 dead transitions. [2024-06-27 22:39:20,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 448 transitions, 7324 flow [2024-06-27 22:39:20,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:39:20,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:39:20,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 163 transitions. [2024-06-27 22:39:20,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5062111801242236 [2024-06-27 22:39:20,237 INFO L175 Difference]: Start difference. First operand has 157 places, 405 transitions, 6011 flow. Second operand 7 states and 163 transitions. [2024-06-27 22:39:20,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 448 transitions, 7324 flow [2024-06-27 22:39:20,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 448 transitions, 7261 flow, removed 20 selfloop flow, removed 2 redundant places. [2024-06-27 22:39:20,560 INFO L231 Difference]: Finished difference. Result has 162 places, 414 transitions, 6403 flow [2024-06-27 22:39:20,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5948, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6403, PETRI_PLACES=162, PETRI_TRANSITIONS=414} [2024-06-27 22:39:20,561 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 110 predicate places. [2024-06-27 22:39:20,561 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 414 transitions, 6403 flow [2024-06-27 22:39:20,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:20,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:39:20,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:39:20,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 22:39:20,561 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:39:20,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:39:20,562 INFO L85 PathProgramCache]: Analyzing trace with hash -634647210, now seen corresponding path program 2 times [2024-06-27 22:39:20,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:39:20,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029134690] [2024-06-27 22:39:20,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:39:20,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:39:20,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:39:21,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:39:21,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:39:21,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029134690] [2024-06-27 22:39:21,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029134690] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:39:21,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:39:21,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:39:21,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058459485] [2024-06-27 22:39:21,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:39:21,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:39:21,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:39:21,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:39:21,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:39:22,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:39:22,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 414 transitions, 6403 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 22:39:22,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:39:22,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:39:22,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:39:23,942 INFO L124 PetriNetUnfolderBase]: 6636/10329 cut-off events. [2024-06-27 22:39:23,942 INFO L125 PetriNetUnfolderBase]: For 162763/162763 co-relation queries the response was YES. [2024-06-27 22:39:24,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67216 conditions, 10329 events. 6636/10329 cut-off events. For 162763/162763 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 62889 event pairs, 1731 based on Foata normal form. 3/10057 useless extension candidates. Maximal degree in co-relation 67134. Up to 9210 conditions per place. [2024-06-27 22:39:24,055 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 394 selfloop transitions, 63 changer transitions 0/464 dead transitions. [2024-06-27 22:39:24,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 464 transitions, 7878 flow [2024-06-27 22:39:24,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:39:24,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:39:24,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2024-06-27 22:39:24,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4968944099378882 [2024-06-27 22:39:24,057 INFO L175 Difference]: Start difference. First operand has 162 places, 414 transitions, 6403 flow. Second operand 7 states and 160 transitions. [2024-06-27 22:39:24,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 464 transitions, 7878 flow [2024-06-27 22:39:24,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 464 transitions, 7698 flow, removed 26 selfloop flow, removed 3 redundant places. [2024-06-27 22:39:24,451 INFO L231 Difference]: Finished difference. Result has 167 places, 423 transitions, 6596 flow [2024-06-27 22:39:24,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6223, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6596, PETRI_PLACES=167, PETRI_TRANSITIONS=423} [2024-06-27 22:39:24,452 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 115 predicate places. [2024-06-27 22:39:24,452 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 423 transitions, 6596 flow [2024-06-27 22:39:24,452 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 22:39:24,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:39:24,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:39:24,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 22:39:24,453 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:39:24,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:39:24,453 INFO L85 PathProgramCache]: Analyzing trace with hash 233957732, now seen corresponding path program 3 times [2024-06-27 22:39:24,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:39:24,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552619680] [2024-06-27 22:39:24,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:39:24,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:39:24,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:39:25,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:39:25,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:39:25,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552619680] [2024-06-27 22:39:25,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552619680] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:39:25,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:39:25,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:39:25,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110242264] [2024-06-27 22:39:25,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:39:25,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:39:25,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:39:25,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:39:25,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:39:25,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:39:25,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 423 transitions, 6596 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 22:39:25,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:39:25,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:39:25,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:39:27,615 INFO L124 PetriNetUnfolderBase]: 6644/10393 cut-off events. [2024-06-27 22:39:27,616 INFO L125 PetriNetUnfolderBase]: For 172387/172387 co-relation queries the response was YES. [2024-06-27 22:39:27,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68115 conditions, 10393 events. 6644/10393 cut-off events. For 172387/172387 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 63880 event pairs, 1734 based on Foata normal form. 6/10106 useless extension candidates. Maximal degree in co-relation 68031. Up to 9299 conditions per place. [2024-06-27 22:39:27,699 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 416 selfloop transitions, 53 changer transitions 0/476 dead transitions. [2024-06-27 22:39:27,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 476 transitions, 8111 flow [2024-06-27 22:39:27,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:39:27,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:39:27,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 172 transitions. [2024-06-27 22:39:27,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4673913043478261 [2024-06-27 22:39:27,701 INFO L175 Difference]: Start difference. First operand has 167 places, 423 transitions, 6596 flow. Second operand 8 states and 172 transitions. [2024-06-27 22:39:27,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 476 transitions, 8111 flow [2024-06-27 22:39:27,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 476 transitions, 7950 flow, removed 34 selfloop flow, removed 4 redundant places. [2024-06-27 22:39:28,005 INFO L231 Difference]: Finished difference. Result has 173 places, 440 transitions, 6950 flow [2024-06-27 22:39:28,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6458, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6950, PETRI_PLACES=173, PETRI_TRANSITIONS=440} [2024-06-27 22:39:28,005 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 121 predicate places. [2024-06-27 22:39:28,006 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 440 transitions, 6950 flow [2024-06-27 22:39:28,006 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 22:39:28,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:39:28,006 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:39:28,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 22:39:28,006 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:39:28,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:39:28,007 INFO L85 PathProgramCache]: Analyzing trace with hash 233661775, now seen corresponding path program 3 times [2024-06-27 22:39:28,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:39:28,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019309160] [2024-06-27 22:39:28,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:39:28,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:39:28,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:39:28,936 INFO 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 22:39:28,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:39:28,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019309160] [2024-06-27 22:39:28,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019309160] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:39:28,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:39:28,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:39:28,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526101351] [2024-06-27 22:39:28,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:39:28,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:39:28,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:39:28,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:39:28,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:39:28,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:39:28,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 440 transitions, 6950 flow. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:28,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:39:28,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:39:28,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:39:30,887 INFO L124 PetriNetUnfolderBase]: 6636/10382 cut-off events. [2024-06-27 22:39:30,887 INFO L125 PetriNetUnfolderBase]: For 184023/184031 co-relation queries the response was YES. [2024-06-27 22:39:30,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69113 conditions, 10382 events. 6636/10382 cut-off events. For 184023/184031 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 63923 event pairs, 1751 based on Foata normal form. 11/10100 useless extension candidates. Maximal degree in co-relation 69025. Up to 9322 conditions per place. [2024-06-27 22:39:30,994 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 422 selfloop transitions, 49 changer transitions 0/478 dead transitions. [2024-06-27 22:39:30,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 478 transitions, 8191 flow [2024-06-27 22:39:30,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:39:30,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:39:30,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 156 transitions. [2024-06-27 22:39:30,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.484472049689441 [2024-06-27 22:39:30,996 INFO L175 Difference]: Start difference. First operand has 173 places, 440 transitions, 6950 flow. Second operand 7 states and 156 transitions. [2024-06-27 22:39:30,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 478 transitions, 8191 flow [2024-06-27 22:39:31,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 478 transitions, 8097 flow, removed 21 selfloop flow, removed 3 redundant places. [2024-06-27 22:39:31,413 INFO L231 Difference]: Finished difference. Result has 177 places, 448 transitions, 7163 flow [2024-06-27 22:39:31,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6856, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7163, PETRI_PLACES=177, PETRI_TRANSITIONS=448} [2024-06-27 22:39:31,414 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 125 predicate places. [2024-06-27 22:39:31,414 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 448 transitions, 7163 flow [2024-06-27 22:39:31,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:31,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:39:31,415 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:39:31,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 22:39:31,415 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:39:31,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:39:31,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1289208004, now seen corresponding path program 3 times [2024-06-27 22:39:31,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:39:31,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190616971] [2024-06-27 22:39:31,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:39:31,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:39:31,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:39:33,147 INFO 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 22:39:33,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:39:33,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190616971] [2024-06-27 22:39:33,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190616971] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:39:33,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:39:33,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:39:33,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237120976] [2024-06-27 22:39:33,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:39:33,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:39:33,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:39:33,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:39:33,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:39:33,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 22:39:33,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 448 transitions, 7163 flow. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:33,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:39:33,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 22:39:33,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:39:35,108 INFO L124 PetriNetUnfolderBase]: 6296/9975 cut-off events. [2024-06-27 22:39:35,109 INFO L125 PetriNetUnfolderBase]: For 189971/190062 co-relation queries the response was YES. [2024-06-27 22:39:35,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67309 conditions, 9975 events. 6296/9975 cut-off events. For 189971/190062 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 62580 event pairs, 1876 based on Foata normal form. 43/9684 useless extension candidates. Maximal degree in co-relation 67219. Up to 7443 conditions per place. [2024-06-27 22:39:35,237 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 275 selfloop transitions, 233 changer transitions 0/518 dead transitions. [2024-06-27 22:39:35,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 518 transitions, 9027 flow [2024-06-27 22:39:35,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:39:35,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:39:35,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 164 transitions. [2024-06-27 22:39:35,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5942028985507246 [2024-06-27 22:39:35,239 INFO L175 Difference]: Start difference. First operand has 177 places, 448 transitions, 7163 flow. Second operand 6 states and 164 transitions. [2024-06-27 22:39:35,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 518 transitions, 9027 flow [2024-06-27 22:39:35,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 518 transitions, 8874 flow, removed 36 selfloop flow, removed 4 redundant places. [2024-06-27 22:39:35,771 INFO L231 Difference]: Finished difference. Result has 180 places, 465 transitions, 7893 flow [2024-06-27 22:39:35,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=7010, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=223, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=7893, PETRI_PLACES=180, PETRI_TRANSITIONS=465} [2024-06-27 22:39:35,772 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 128 predicate places. [2024-06-27 22:39:35,772 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 465 transitions, 7893 flow [2024-06-27 22:39:35,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:35,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:39:35,773 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:39:35,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 22:39:35,773 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:39:35,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:39:35,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1281708484, now seen corresponding path program 4 times [2024-06-27 22:39:35,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:39:35,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288105944] [2024-06-27 22:39:35,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:39:35,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:39:35,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:39:37,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:39:37,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:39:37,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288105944] [2024-06-27 22:39:37,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288105944] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:39:37,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:39:37,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:39:37,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784169517] [2024-06-27 22:39:37,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:39:37,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:39:37,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:39:37,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:39:37,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:39:37,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:39:37,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 465 transitions, 7893 flow. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:37,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:39:37,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:39:37,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:39:39,874 INFO L124 PetriNetUnfolderBase]: 6755/10585 cut-off events. [2024-06-27 22:39:39,875 INFO L125 PetriNetUnfolderBase]: For 215986/216018 co-relation queries the response was YES. [2024-06-27 22:39:39,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73833 conditions, 10585 events. 6755/10585 cut-off events. For 215986/216018 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 65199 event pairs, 1791 based on Foata normal form. 40/10325 useless extension candidates. Maximal degree in co-relation 73742. Up to 8428 conditions per place. [2024-06-27 22:39:39,972 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 287 selfloop transitions, 257 changer transitions 0/551 dead transitions. [2024-06-27 22:39:39,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 551 transitions, 10196 flow [2024-06-27 22:39:39,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:39:39,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:39:39,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-27 22:39:39,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.532608695652174 [2024-06-27 22:39:39,974 INFO L175 Difference]: Start difference. First operand has 180 places, 465 transitions, 7893 flow. Second operand 8 states and 196 transitions. [2024-06-27 22:39:39,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 551 transitions, 10196 flow [2024-06-27 22:39:40,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 551 transitions, 9832 flow, removed 68 selfloop flow, removed 3 redundant places. [2024-06-27 22:39:40,469 INFO L231 Difference]: Finished difference. Result has 188 places, 496 transitions, 8974 flow [2024-06-27 22:39:40,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=7552, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=465, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=226, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8974, PETRI_PLACES=188, PETRI_TRANSITIONS=496} [2024-06-27 22:39:40,470 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 136 predicate places. [2024-06-27 22:39:40,470 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 496 transitions, 8974 flow [2024-06-27 22:39:40,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:40,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:39:40,471 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:39:40,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 22:39:40,471 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:39:40,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:39:40,471 INFO L85 PathProgramCache]: Analyzing trace with hash -158286483, now seen corresponding path program 4 times [2024-06-27 22:39:40,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:39:40,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261221600] [2024-06-27 22:39:40,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:39:40,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:39:40,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:39:42,082 INFO 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 22:39:42,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:39:42,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261221600] [2024-06-27 22:39:42,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261221600] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:39:42,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:39:42,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:39:42,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092598794] [2024-06-27 22:39:42,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:39:42,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:39:42,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:39:42,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:39:42,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:39:42,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:39:42,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 496 transitions, 8974 flow. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:42,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:39:42,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:39:42,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:39:44,771 INFO L124 PetriNetUnfolderBase]: 6913/10784 cut-off events. [2024-06-27 22:39:44,771 INFO L125 PetriNetUnfolderBase]: For 231665/231669 co-relation queries the response was YES. [2024-06-27 22:39:44,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78530 conditions, 10784 events. 6913/10784 cut-off events. For 231665/231669 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 66468 event pairs, 1600 based on Foata normal form. 4/10499 useless extension candidates. Maximal degree in co-relation 78435. Up to 8017 conditions per place. [2024-06-27 22:39:44,899 INFO L140 encePairwiseOnDemand]: 28/46 looper letters, 302 selfloop transitions, 297 changer transitions 0/606 dead transitions. [2024-06-27 22:39:44,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 606 transitions, 11923 flow [2024-06-27 22:39:44,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:39:44,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:39:44,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-06-27 22:39:44,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.529891304347826 [2024-06-27 22:39:44,901 INFO L175 Difference]: Start difference. First operand has 188 places, 496 transitions, 8974 flow. Second operand 8 states and 195 transitions. [2024-06-27 22:39:44,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 606 transitions, 11923 flow [2024-06-27 22:39:45,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 606 transitions, 11406 flow, removed 84 selfloop flow, removed 3 redundant places. [2024-06-27 22:39:45,562 INFO L231 Difference]: Finished difference. Result has 195 places, 545 transitions, 10380 flow [2024-06-27 22:39:45,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=8529, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=496, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=248, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10380, PETRI_PLACES=195, PETRI_TRANSITIONS=545} [2024-06-27 22:39:45,563 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 143 predicate places. [2024-06-27 22:39:45,563 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 545 transitions, 10380 flow [2024-06-27 22:39:45,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:45,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:39:45,564 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:39:45,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 22:39:45,564 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:39:45,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:39:45,564 INFO L85 PathProgramCache]: Analyzing trace with hash -158097476, now seen corresponding path program 4 times [2024-06-27 22:39:45,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:39:45,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140276333] [2024-06-27 22:39:45,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:39:45,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:39:45,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:39:46,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:39:46,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:39:46,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140276333] [2024-06-27 22:39:46,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140276333] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:39:46,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:39:46,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:39:46,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283804703] [2024-06-27 22:39:46,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:39:46,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:39:46,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:39:46,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:39:46,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:39:47,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:39:47,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 545 transitions, 10380 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 22:39:47,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:39:47,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:39:47,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:39:49,480 INFO L124 PetriNetUnfolderBase]: 7178/11174 cut-off events. [2024-06-27 22:39:49,480 INFO L125 PetriNetUnfolderBase]: For 242731/242759 co-relation queries the response was YES. [2024-06-27 22:39:49,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83520 conditions, 11174 events. 7178/11174 cut-off events. For 242731/242759 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 68940 event pairs, 1701 based on Foata normal form. 30/10902 useless extension candidates. Maximal degree in co-relation 83421. Up to 8981 conditions per place. [2024-06-27 22:39:49,638 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 398 selfloop transitions, 296 changer transitions 0/701 dead transitions. [2024-06-27 22:39:49,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 701 transitions, 14374 flow [2024-06-27 22:39:49,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:39:49,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:39:49,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 215 transitions. [2024-06-27 22:39:49,640 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5193236714975845 [2024-06-27 22:39:49,640 INFO L175 Difference]: Start difference. First operand has 195 places, 545 transitions, 10380 flow. Second operand 9 states and 215 transitions. [2024-06-27 22:39:49,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 701 transitions, 14374 flow [2024-06-27 22:39:50,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 701 transitions, 13816 flow, removed 32 selfloop flow, removed 4 redundant places. [2024-06-27 22:39:50,386 INFO L231 Difference]: Finished difference. Result has 205 places, 631 transitions, 12617 flow [2024-06-27 22:39:50,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=9925, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=545, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=213, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12617, PETRI_PLACES=205, PETRI_TRANSITIONS=631} [2024-06-27 22:39:50,387 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 153 predicate places. [2024-06-27 22:39:50,387 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 631 transitions, 12617 flow [2024-06-27 22:39:50,387 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 22:39:50,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:39:50,388 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:39:50,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 22:39:50,388 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:39:50,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:39:50,389 INFO L85 PathProgramCache]: Analyzing trace with hash -158104203, now seen corresponding path program 5 times [2024-06-27 22:39:50,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:39:50,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019551649] [2024-06-27 22:39:50,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:39:50,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:39:50,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:39:51,936 INFO 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 22:39:51,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:39:51,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019551649] [2024-06-27 22:39:51,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019551649] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:39:51,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:39:51,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:39:51,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126912656] [2024-06-27 22:39:51,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:39:51,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:39:51,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:39:51,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:39:51,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:39:51,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:39:51,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 631 transitions, 12617 flow. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:51,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:39:51,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:39:51,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:39:55,058 INFO L124 PetriNetUnfolderBase]: 7253/11200 cut-off events. [2024-06-27 22:39:55,059 INFO L125 PetriNetUnfolderBase]: For 267956/267958 co-relation queries the response was YES. [2024-06-27 22:39:55,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86659 conditions, 11200 events. 7253/11200 cut-off events. For 267956/267958 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 68325 event pairs, 1619 based on Foata normal form. 2/10931 useless extension candidates. Maximal degree in co-relation 86555. Up to 8281 conditions per place. [2024-06-27 22:39:55,202 INFO L140 encePairwiseOnDemand]: 29/46 looper letters, 343 selfloop transitions, 363 changer transitions 0/713 dead transitions. [2024-06-27 22:39:55,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 713 transitions, 15171 flow [2024-06-27 22:39:55,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:39:55,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:39:55,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-06-27 22:39:55,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5217391304347826 [2024-06-27 22:39:55,204 INFO L175 Difference]: Start difference. First operand has 205 places, 631 transitions, 12617 flow. Second operand 8 states and 192 transitions. [2024-06-27 22:39:55,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 713 transitions, 15171 flow [2024-06-27 22:39:56,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 713 transitions, 14984 flow, removed 82 selfloop flow, removed 1 redundant places. [2024-06-27 22:39:56,064 INFO L231 Difference]: Finished difference. Result has 214 places, 661 transitions, 14005 flow [2024-06-27 22:39:56,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=12430, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=631, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=333, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14005, PETRI_PLACES=214, PETRI_TRANSITIONS=661} [2024-06-27 22:39:56,066 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 162 predicate places. [2024-06-27 22:39:56,066 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 661 transitions, 14005 flow [2024-06-27 22:39:56,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:56,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:39:56,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:39:56,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 22:39:56,067 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:39:56,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:39:56,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1220425437, now seen corresponding path program 1 times [2024-06-27 22:39:56,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:39:56,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94768316] [2024-06-27 22:39:56,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:39:56,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:39:56,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:39:58,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:39:58,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:39:58,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94768316] [2024-06-27 22:39:58,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94768316] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:39:58,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:39:58,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:39:58,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946565418] [2024-06-27 22:39:58,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:39:58,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:39:58,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:39:58,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:39:58,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:39:58,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:39:58,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 661 transitions, 14005 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:58,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:39:58,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:39:58,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:40:01,260 INFO L124 PetriNetUnfolderBase]: 8417/12905 cut-off events. [2024-06-27 22:40:01,260 INFO L125 PetriNetUnfolderBase]: For 325669/325677 co-relation queries the response was YES. [2024-06-27 22:40:01,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101032 conditions, 12905 events. 8417/12905 cut-off events. For 325669/325677 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 80079 event pairs, 1825 based on Foata normal form. 24/12638 useless extension candidates. Maximal degree in co-relation 100923. Up to 10391 conditions per place. [2024-06-27 22:40:01,439 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 663 selfloop transitions, 102 changer transitions 0/772 dead transitions. [2024-06-27 22:40:01,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 772 transitions, 16768 flow [2024-06-27 22:40:01,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:40:01,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:40:01,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 203 transitions. [2024-06-27 22:40:01,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5516304347826086 [2024-06-27 22:40:01,441 INFO L175 Difference]: Start difference. First operand has 214 places, 661 transitions, 14005 flow. Second operand 8 states and 203 transitions. [2024-06-27 22:40:01,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 772 transitions, 16768 flow [2024-06-27 22:40:02,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 772 transitions, 16208 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-06-27 22:40:02,498 INFO L231 Difference]: Finished difference. Result has 221 places, 704 transitions, 14397 flow [2024-06-27 22:40:02,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=13465, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=661, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=565, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14397, PETRI_PLACES=221, PETRI_TRANSITIONS=704} [2024-06-27 22:40:02,499 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 169 predicate places. [2024-06-27 22:40:02,499 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 704 transitions, 14397 flow [2024-06-27 22:40:02,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:02,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:40:02,500 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:40:02,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 22:40:02,500 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:40:02,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:40:02,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1220485887, now seen corresponding path program 2 times [2024-06-27 22:40:02,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:40:02,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029436229] [2024-06-27 22:40:02,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:40:02,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:40:02,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:40:04,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:40:04,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:40:04,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029436229] [2024-06-27 22:40:04,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029436229] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:40:04,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:40:04,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:40:04,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172926159] [2024-06-27 22:40:04,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:40:04,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:40:04,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:40:04,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:40:04,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:40:04,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:40:04,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 704 transitions, 14397 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:04,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:40:04,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:40:04,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:40:08,221 INFO L124 PetriNetUnfolderBase]: 8703/13346 cut-off events. [2024-06-27 22:40:08,221 INFO L125 PetriNetUnfolderBase]: For 364954/364962 co-relation queries the response was YES. [2024-06-27 22:40:08,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108016 conditions, 13346 events. 8703/13346 cut-off events. For 364954/364962 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 83080 event pairs, 2008 based on Foata normal form. 27/13072 useless extension candidates. Maximal degree in co-relation 107903. Up to 11502 conditions per place. [2024-06-27 22:40:08,413 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 666 selfloop transitions, 102 changer transitions 0/775 dead transitions. [2024-06-27 22:40:08,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 775 transitions, 16672 flow [2024-06-27 22:40:08,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:40:08,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:40:08,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 198 transitions. [2024-06-27 22:40:08,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5380434782608695 [2024-06-27 22:40:08,414 INFO L175 Difference]: Start difference. First operand has 221 places, 704 transitions, 14397 flow. Second operand 8 states and 198 transitions. [2024-06-27 22:40:08,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 775 transitions, 16672 flow [2024-06-27 22:40:09,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 775 transitions, 16565 flow, removed 45 selfloop flow, removed 2 redundant places. [2024-06-27 22:40:09,700 INFO L231 Difference]: Finished difference. Result has 229 places, 713 transitions, 14725 flow [2024-06-27 22:40:09,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=14314, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=704, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=606, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14725, PETRI_PLACES=229, PETRI_TRANSITIONS=713} [2024-06-27 22:40:09,701 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 177 predicate places. [2024-06-27 22:40:09,701 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 713 transitions, 14725 flow [2024-06-27 22:40:09,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:09,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:40:09,701 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:40:09,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 22:40:09,702 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:40:09,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:40:09,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1220486011, now seen corresponding path program 1 times [2024-06-27 22:40:09,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:40:09,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923509524] [2024-06-27 22:40:09,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:40:09,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:40:09,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:40:11,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:40:11,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:40:11,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923509524] [2024-06-27 22:40:11,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923509524] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:40:11,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:40:11,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:40:11,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552987436] [2024-06-27 22:40:11,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:40:11,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:40:11,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:40:11,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:40:11,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:40:11,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:40:11,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 713 transitions, 14725 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:11,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:40:11,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:40:11,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:40:15,161 INFO L124 PetriNetUnfolderBase]: 8958/13666 cut-off events. [2024-06-27 22:40:15,162 INFO L125 PetriNetUnfolderBase]: For 376473/376475 co-relation queries the response was YES. [2024-06-27 22:40:15,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111632 conditions, 13666 events. 8958/13666 cut-off events. For 376473/376475 co-relation queries the response was YES. Maximal size of possible extension queue 507. Compared 84840 event pairs, 2151 based on Foata normal form. 7/13387 useless extension candidates. Maximal degree in co-relation 111515. Up to 11693 conditions per place. [2024-06-27 22:40:15,369 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 588 selfloop transitions, 219 changer transitions 0/814 dead transitions. [2024-06-27 22:40:15,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 814 transitions, 17838 flow [2024-06-27 22:40:15,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:40:15,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:40:15,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2024-06-27 22:40:15,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5190217391304348 [2024-06-27 22:40:15,370 INFO L175 Difference]: Start difference. First operand has 229 places, 713 transitions, 14725 flow. Second operand 8 states and 191 transitions. [2024-06-27 22:40:15,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 814 transitions, 17838 flow [2024-06-27 22:40:17,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 814 transitions, 17607 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-27 22:40:17,107 INFO L231 Difference]: Finished difference. Result has 234 places, 748 transitions, 15662 flow [2024-06-27 22:40:17,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=14500, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=713, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=192, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=503, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15662, PETRI_PLACES=234, PETRI_TRANSITIONS=748} [2024-06-27 22:40:17,109 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 182 predicate places. [2024-06-27 22:40:17,109 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 748 transitions, 15662 flow [2024-06-27 22:40:17,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:17,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:40:17,110 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:40:17,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 22:40:17,110 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:40:17,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:40:17,110 INFO L85 PathProgramCache]: Analyzing trace with hash 775940145, now seen corresponding path program 3 times [2024-06-27 22:40:17,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:40:17,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701843] [2024-06-27 22:40:17,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:40:17,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:40:17,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:40:18,888 INFO 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 22:40:18,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:40:18,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701843] [2024-06-27 22:40:18,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701843] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:40:18,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:40:18,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:40:18,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533858795] [2024-06-27 22:40:18,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:40:18,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:40:18,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:40:18,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:40:18,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:40:18,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:40:18,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 748 transitions, 15662 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:18,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:40:18,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:40:18,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:40:22,835 INFO L124 PetriNetUnfolderBase]: 9143/13973 cut-off events. [2024-06-27 22:40:22,835 INFO L125 PetriNetUnfolderBase]: For 406648/406656 co-relation queries the response was YES. [2024-06-27 22:40:22,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114895 conditions, 13973 events. 9143/13973 cut-off events. For 406648/406656 co-relation queries the response was YES. Maximal size of possible extension queue 517. Compared 87155 event pairs, 2198 based on Foata normal form. 31/13704 useless extension candidates. Maximal degree in co-relation 114775. Up to 12332 conditions per place. [2024-06-27 22:40:23,041 INFO L140 encePairwiseOnDemand]: 30/46 looper letters, 714 selfloop transitions, 87 changer transitions 0/808 dead transitions. [2024-06-27 22:40:23,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 808 transitions, 17801 flow [2024-06-27 22:40:23,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:40:23,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:40:23,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-06-27 22:40:23,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5271739130434783 [2024-06-27 22:40:23,057 INFO L175 Difference]: Start difference. First operand has 234 places, 748 transitions, 15662 flow. Second operand 8 states and 194 transitions. [2024-06-27 22:40:23,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 808 transitions, 17801 flow [2024-06-27 22:40:24,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 808 transitions, 17451 flow, removed 90 selfloop flow, removed 3 redundant places. [2024-06-27 22:40:24,441 INFO L231 Difference]: Finished difference. Result has 242 places, 757 transitions, 15722 flow [2024-06-27 22:40:24,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=15316, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=748, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=665, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15722, PETRI_PLACES=242, PETRI_TRANSITIONS=757} [2024-06-27 22:40:24,442 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 190 predicate places. [2024-06-27 22:40:24,442 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 757 transitions, 15722 flow [2024-06-27 22:40:24,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:24,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:40:24,443 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:40:24,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 22:40:24,443 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:40:24,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:40:24,443 INFO L85 PathProgramCache]: Analyzing trace with hash 775940269, now seen corresponding path program 2 times [2024-06-27 22:40:24,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:40:24,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858771210] [2024-06-27 22:40:24,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:40:24,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:40:24,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:40:25,971 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 22:40:25,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:40:25,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858771210] [2024-06-27 22:40:25,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858771210] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:40:25,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:40:25,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:40:25,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848387284] [2024-06-27 22:40:25,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:40:25,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:40:25,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:40:25,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:40:25,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:40:26,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:40:26,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 757 transitions, 15722 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:26,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:40:26,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:40:26,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:40:29,652 INFO L124 PetriNetUnfolderBase]: 9237/14078 cut-off events. [2024-06-27 22:40:29,652 INFO L125 PetriNetUnfolderBase]: For 423303/423305 co-relation queries the response was YES. [2024-06-27 22:40:29,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117678 conditions, 14078 events. 9237/14078 cut-off events. For 423303/423305 co-relation queries the response was YES. Maximal size of possible extension queue 519. Compared 87709 event pairs, 2262 based on Foata normal form. 7/13797 useless extension candidates. Maximal degree in co-relation 117553. Up to 12408 conditions per place. [2024-06-27 22:40:29,875 INFO L140 encePairwiseOnDemand]: 30/46 looper letters, 617 selfloop transitions, 201 changer transitions 0/825 dead transitions. [2024-06-27 22:40:29,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 825 transitions, 18255 flow [2024-06-27 22:40:29,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:40:29,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:40:29,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-06-27 22:40:29,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5135869565217391 [2024-06-27 22:40:29,877 INFO L175 Difference]: Start difference. First operand has 242 places, 757 transitions, 15722 flow. Second operand 8 states and 189 transitions. [2024-06-27 22:40:29,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 825 transitions, 18255 flow [2024-06-27 22:40:31,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 825 transitions, 18068 flow, removed 29 selfloop flow, removed 4 redundant places. [2024-06-27 22:40:31,314 INFO L231 Difference]: Finished difference. Result has 247 places, 771 transitions, 16270 flow [2024-06-27 22:40:31,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=15536, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=757, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=187, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=556, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=16270, PETRI_PLACES=247, PETRI_TRANSITIONS=771} [2024-06-27 22:40:31,315 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 195 predicate places. [2024-06-27 22:40:31,315 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 771 transitions, 16270 flow [2024-06-27 22:40:31,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:31,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:40:31,315 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:40:31,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 22:40:31,315 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:40:31,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:40:31,316 INFO L85 PathProgramCache]: Analyzing trace with hash 891231439, now seen corresponding path program 3 times [2024-06-27 22:40:31,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:40:31,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901105421] [2024-06-27 22:40:31,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:40:31,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:40:31,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:40:32,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:40:32,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:40:32,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901105421] [2024-06-27 22:40:32,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901105421] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:40:32,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:40:32,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:40:32,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371024025] [2024-06-27 22:40:32,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:40:32,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:40:32,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:40:32,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:40:32,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:40:32,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:40:32,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 771 transitions, 16270 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:32,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:40:32,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:40:32,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:40:36,886 INFO L124 PetriNetUnfolderBase]: 9228/14132 cut-off events. [2024-06-27 22:40:36,886 INFO L125 PetriNetUnfolderBase]: For 435710/435712 co-relation queries the response was YES. [2024-06-27 22:40:36,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118576 conditions, 14132 events. 9228/14132 cut-off events. For 435710/435712 co-relation queries the response was YES. Maximal size of possible extension queue 523. Compared 88742 event pairs, 2223 based on Foata normal form. 7/13829 useless extension candidates. Maximal degree in co-relation 118449. Up to 12300 conditions per place. [2024-06-27 22:40:37,052 INFO L140 encePairwiseOnDemand]: 30/46 looper letters, 612 selfloop transitions, 214 changer transitions 0/833 dead transitions. [2024-06-27 22:40:37,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 833 transitions, 18688 flow [2024-06-27 22:40:37,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:40:37,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:40:37,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 193 transitions. [2024-06-27 22:40:37,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5244565217391305 [2024-06-27 22:40:37,053 INFO L175 Difference]: Start difference. First operand has 247 places, 771 transitions, 16270 flow. Second operand 8 states and 193 transitions. [2024-06-27 22:40:37,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 833 transitions, 18688 flow [2024-06-27 22:40:38,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 833 transitions, 18200 flow, removed 61 selfloop flow, removed 5 redundant places. [2024-06-27 22:40:38,334 INFO L231 Difference]: Finished difference. Result has 251 places, 777 transitions, 16394 flow [2024-06-27 22:40:38,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=15782, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=771, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=208, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=557, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=16394, PETRI_PLACES=251, PETRI_TRANSITIONS=777} [2024-06-27 22:40:38,335 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 199 predicate places. [2024-06-27 22:40:38,335 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 777 transitions, 16394 flow [2024-06-27 22:40:38,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:38,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:40:38,336 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:40:38,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 22:40:38,336 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:40:38,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:40:38,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1338758017, now seen corresponding path program 1 times [2024-06-27 22:40:38,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:40:38,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552832286] [2024-06-27 22:40:38,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:40:38,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:40:38,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:40:39,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:40:39,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:40:39,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552832286] [2024-06-27 22:40:39,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552832286] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:40:39,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:40:39,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:40:39,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376228532] [2024-06-27 22:40:39,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:40:39,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:40:39,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:40:39,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:40:39,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:40:39,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:40:39,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 777 transitions, 16394 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:39,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:40:39,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:40:39,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:40:43,928 INFO L124 PetriNetUnfolderBase]: 9395/14536 cut-off events. [2024-06-27 22:40:43,928 INFO L125 PetriNetUnfolderBase]: For 463890/463892 co-relation queries the response was YES. [2024-06-27 22:40:44,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123042 conditions, 14536 events. 9395/14536 cut-off events. For 463890/463892 co-relation queries the response was YES. Maximal size of possible extension queue 510. Compared 92447 event pairs, 2296 based on Foata normal form. 5/14172 useless extension candidates. Maximal degree in co-relation 122913. Up to 12185 conditions per place. [2024-06-27 22:40:44,141 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 567 selfloop transitions, 301 changer transitions 0/875 dead transitions. [2024-06-27 22:40:44,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 875 transitions, 20111 flow [2024-06-27 22:40:44,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:40:44,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:40:44,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 179 transitions. [2024-06-27 22:40:44,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48641304347826086 [2024-06-27 22:40:44,143 INFO L175 Difference]: Start difference. First operand has 251 places, 777 transitions, 16394 flow. Second operand 8 states and 179 transitions. [2024-06-27 22:40:44,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 875 transitions, 20111 flow