./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix023_power.opt_pso.opt_rmo.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix023_power.opt_pso.opt_rmo.opt.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/mix023_power.opt_pso.opt_rmo.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix023_power.opt_pso.opt_rmo.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 23:29:48,220 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 23:29:48,284 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 23:29:48,289 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 23:29:48,290 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 23:29:48,318 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 23:29:48,319 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 23:29:48,320 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 23:29:48,320 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 23:29:48,324 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 23:29:48,324 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 23:29:48,325 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 23:29:48,326 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 23:29:48,327 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 23:29:48,327 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 23:29:48,328 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 23:29:48,328 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 23:29:48,328 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 23:29:48,328 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 23:29:48,329 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 23:29:48,329 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 23:29:48,329 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 23:29:48,330 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 23:29:48,330 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 23:29:48,330 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 23:29:48,330 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 23:29:48,331 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 23:29:48,331 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 23:29:48,332 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 23:29:48,332 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 23:29:48,333 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 23:29:48,333 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 23:29:48,333 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 23:29:48,334 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 23:29:48,334 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 23:29:48,334 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 23:29:48,334 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 23:29:48,334 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 23:29:48,335 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 23:29:48,335 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 23:29:48,335 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 23:29:48,335 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 23:29:48,336 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 23:29:48,336 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-27 23:29:48,573 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 23:29:48,599 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 23:29:48,602 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 23:29:48,603 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 23:29:48,603 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 23:29:48,604 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix023_power.opt_pso.opt_rmo.opt.i [2024-06-27 23:29:49,802 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 23:29:50,019 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 23:29:50,020 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix023_power.opt_pso.opt_rmo.opt.i [2024-06-27 23:29:50,035 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b6bc8132/7466d8452e054a16b5492023fe6a8796/FLAG11e56f31e [2024-06-27 23:29:50,048 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b6bc8132/7466d8452e054a16b5492023fe6a8796 [2024-06-27 23:29:50,050 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 23:29:50,052 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 23:29:50,052 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix023_power.opt_pso.opt_rmo.opt.yml/witness.yml [2024-06-27 23:29:50,141 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 23:29:50,142 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 23:29:50,144 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 23:29:50,144 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 23:29:50,148 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 23:29:50,149 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 11:29:50" (1/2) ... [2024-06-27 23:29:50,151 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78f3c33e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:29:50, skipping insertion in model container [2024-06-27 23:29:50,151 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 11:29:50" (1/2) ... [2024-06-27 23:29:50,154 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@723d4f1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:29:50, skipping insertion in model container [2024-06-27 23:29:50,154 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:29:50" (2/2) ... [2024-06-27 23:29:50,155 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78f3c33e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:29:50, skipping insertion in model container [2024-06-27 23:29:50,155 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:29:50" (2/2) ... [2024-06-27 23:29:50,156 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 23:29:50,184 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 23:29:50,185 INFO L97 edCorrectnessWitness]: Location invariant before [L862-L862] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EBX) + (long long )y >= 0LL && (0LL - (long long )__unbuffered_p1_EBX) + (long long )y$mem_tmp >= 0LL) && (0LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff0_thd3 >= 0LL) && (0LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p3_EBX) + (long long )a >= 0LL) && (0LL - (long long )y) + (long long )y$r_buff0_thd3 >= 0LL) && (0LL - (long long )y) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$mem_tmp) + (long long )y$r_buff0_thd3 >= 0LL) && (0LL - (long long )y$mem_tmp) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p1_EBX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p3_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p3_EBX) - (long long )a >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$mem_tmp >= 0LL) && (long long )y - (long long )y$mem_tmp >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$r_buff1_thd3 >= 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$r_buff0_thd3 - (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$w_buff1_used >= 0LL) && (long long )y$r_buff1_thd3 - (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff1_thd3 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0_used - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff1 - (long long )y$w_buff1_used >= 0LL) [2024-06-27 23:29:50,186 INFO L97 edCorrectnessWitness]: Location invariant before [L866-L866] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EBX) + (long long )y >= 0LL && (0LL - (long long )__unbuffered_p1_EBX) + (long long )y$mem_tmp >= 0LL) && (0LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff0_thd3 >= 0LL) && (0LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p3_EBX) + (long long )a >= 0LL) && (0LL - (long long )y) + (long long )y$r_buff0_thd3 >= 0LL) && (0LL - (long long )y) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$mem_tmp) + (long long )y$r_buff0_thd3 >= 0LL) && (0LL - (long long )y$mem_tmp) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p1_EBX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p3_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p3_EBX) - (long long )a >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$mem_tmp >= 0LL) && (long long )y - (long long )y$mem_tmp >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$r_buff1_thd3 >= 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$r_buff0_thd3 - (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$w_buff1_used >= 0LL) && (long long )y$r_buff1_thd3 - (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff1_thd3 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0_used - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff1 - (long long )y$w_buff1_used >= 0LL) [2024-06-27 23:29:50,186 INFO L97 edCorrectnessWitness]: Location invariant before [L864-L864] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EBX) + (long long )y >= 0LL && (0LL - (long long )__unbuffered_p1_EBX) + (long long )y$mem_tmp >= 0LL) && (0LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff0_thd3 >= 0LL) && (0LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p3_EBX) + (long long )a >= 0LL) && (0LL - (long long )y) + (long long )y$r_buff0_thd3 >= 0LL) && (0LL - (long long )y) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$mem_tmp) + (long long )y$r_buff0_thd3 >= 0LL) && (0LL - (long long )y$mem_tmp) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p1_EBX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p3_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p3_EBX) - (long long )a >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$mem_tmp >= 0LL) && (long long )y - (long long )y$mem_tmp >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$r_buff1_thd3 >= 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$r_buff0_thd3 - (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$w_buff1_used >= 0LL) && (long long )y$r_buff1_thd3 - (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff1_thd3 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0_used - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff1 - (long long )y$w_buff1_used >= 0LL) [2024-06-27 23:29:50,186 INFO L97 edCorrectnessWitness]: Location invariant before [L867-L867] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EBX) + (long long )y >= 0LL && (0LL - (long long )__unbuffered_p1_EBX) + (long long )y$mem_tmp >= 0LL) && (0LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff0_thd3 >= 0LL) && (0LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p3_EBX) + (long long )a >= 0LL) && (0LL - (long long )y) + (long long )y$r_buff0_thd3 >= 0LL) && (0LL - (long long )y) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$mem_tmp) + (long long )y$r_buff0_thd3 >= 0LL) && (0LL - (long long )y$mem_tmp) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p1_EBX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p3_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p3_EBX) - (long long )a >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$mem_tmp >= 0LL) && (long long )y - (long long )y$mem_tmp >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$r_buff1_thd3 >= 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$r_buff0_thd3 - (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$w_buff1_used >= 0LL) && (long long )y$r_buff1_thd3 - (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff1_thd3 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0_used - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff1 - (long long )y$w_buff1_used >= 0LL) [2024-06-27 23:29:50,186 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 23:29:50,187 INFO L106 edCorrectnessWitness]: ghost_update [L860-L860] multithreaded = 1; [2024-06-27 23:29:50,239 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 23:29:50,670 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 23:29:50,682 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 23:29:50,890 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 23:29:50,929 INFO L206 MainTranslator]: Completed translation [2024-06-27 23:29:50,930 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:29:50 WrapperNode [2024-06-27 23:29:50,930 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 23:29:50,931 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 23:29:50,931 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 23:29:50,932 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 23:29:50,938 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:29:50" (1/1) ... [2024-06-27 23:29:50,956 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:29:50" (1/1) ... [2024-06-27 23:29:51,018 INFO L138 Inliner]: procedures = 176, calls = 56, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 139 [2024-06-27 23:29:51,019 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 23:29:51,019 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 23:29:51,020 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 23:29:51,020 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 23:29:51,030 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:29:50" (1/1) ... [2024-06-27 23:29:51,030 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:29:50" (1/1) ... [2024-06-27 23:29:51,036 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:29:50" (1/1) ... [2024-06-27 23:29:51,065 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-27 23:29:51,065 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:29:50" (1/1) ... [2024-06-27 23:29:51,066 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:29:50" (1/1) ... [2024-06-27 23:29:51,085 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:29:50" (1/1) ... [2024-06-27 23:29:51,088 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:29:50" (1/1) ... [2024-06-27 23:29:51,098 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:29:50" (1/1) ... [2024-06-27 23:29:51,101 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:29:50" (1/1) ... [2024-06-27 23:29:51,111 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 23:29:51,113 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 23:29:51,113 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 23:29:51,113 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 23:29:51,114 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:29:50" (1/1) ... [2024-06-27 23:29:51,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 23:29:51,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 23:29:51,146 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-27 23:29:51,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-27 23:29:51,192 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 23:29:51,192 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 23:29:51,192 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 23:29:51,193 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 23:29:51,193 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 23:29:51,193 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 23:29:51,193 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 23:29:51,193 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 23:29:51,194 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-27 23:29:51,194 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-27 23:29:51,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 23:29:51,194 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 23:29:51,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 23:29:51,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 23:29:51,197 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 23:29:51,355 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 23:29:51,357 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 23:29:51,934 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 23:29:51,934 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 23:29:52,145 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 23:29:52,145 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 23:29:52,146 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 11:29:52 BoogieIcfgContainer [2024-06-27 23:29:52,146 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 23:29:52,149 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 23:29:52,149 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 23:29:52,152 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 23:29:52,152 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 11:29:50" (1/4) ... [2024-06-27 23:29:52,153 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3186fdb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 11:29:52, skipping insertion in model container [2024-06-27 23:29:52,153 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:29:50" (2/4) ... [2024-06-27 23:29:52,155 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3186fdb1 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 11:29:52, skipping insertion in model container [2024-06-27 23:29:52,156 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:29:50" (3/4) ... [2024-06-27 23:29:52,157 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3186fdb1 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 11:29:52, skipping insertion in model container [2024-06-27 23:29:52,157 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 11:29:52" (4/4) ... [2024-06-27 23:29:52,158 INFO L112 eAbstractionObserver]: Analyzing ICFG mix023_power.opt_pso.opt_rmo.opt.i [2024-06-27 23:29:52,175 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 23:29:52,175 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-27 23:29:52,175 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 23:29:52,266 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 23:29:52,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 53 transitions, 122 flow [2024-06-27 23:29:52,344 INFO L124 PetriNetUnfolderBase]: 0/49 cut-off events. [2024-06-27 23:29:52,345 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 23:29:52,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 49 events. 0/49 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 94 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-27 23:29:52,348 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 53 transitions, 122 flow [2024-06-27 23:29:52,352 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 43 transitions, 98 flow [2024-06-27 23:29:52,367 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 23:29:52,376 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;@3e98516, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 23:29:52,376 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-27 23:29:52,382 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 23:29:52,383 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 23:29:52,383 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 23:29:52,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:52,384 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 23:29:52,384 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:29:52,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:52,392 INFO L85 PathProgramCache]: Analyzing trace with hash 386340896, now seen corresponding path program 1 times [2024-06-27 23:29:52,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:52,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218969970] [2024-06-27 23:29:52,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:52,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:52,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:54,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:29:54,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:54,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218969970] [2024-06-27 23:29:54,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218969970] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:54,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:54,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 23:29:54,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089093438] [2024-06-27 23:29:54,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:54,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 23:29:54,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:54,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 23:29:54,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 23:29:54,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 53 [2024-06-27 23:29:54,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 43 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:54,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:54,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 53 [2024-06-27 23:29:54,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:56,255 INFO L124 PetriNetUnfolderBase]: 8152/11699 cut-off events. [2024-06-27 23:29:56,256 INFO L125 PetriNetUnfolderBase]: For 178/178 co-relation queries the response was YES. [2024-06-27 23:29:56,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23186 conditions, 11699 events. 8152/11699 cut-off events. For 178/178 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 67322 event pairs, 6174 based on Foata normal form. 1/11333 useless extension candidates. Maximal degree in co-relation 23173. Up to 11108 conditions per place. [2024-06-27 23:29:56,347 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 42 selfloop transitions, 5 changer transitions 0/57 dead transitions. [2024-06-27 23:29:56,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 57 transitions, 229 flow [2024-06-27 23:29:56,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 23:29:56,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 23:29:56,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2024-06-27 23:29:56,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6415094339622641 [2024-06-27 23:29:56,361 INFO L175 Difference]: Start difference. First operand has 56 places, 43 transitions, 98 flow. Second operand 3 states and 102 transitions. [2024-06-27 23:29:56,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 57 transitions, 229 flow [2024-06-27 23:29:56,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 57 transitions, 222 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-27 23:29:56,367 INFO L231 Difference]: Finished difference. Result has 55 places, 47 transitions, 133 flow [2024-06-27 23:29:56,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=133, PETRI_PLACES=55, PETRI_TRANSITIONS=47} [2024-06-27 23:29:56,372 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -1 predicate places. [2024-06-27 23:29:56,373 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 47 transitions, 133 flow [2024-06-27 23:29:56,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:56,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:56,373 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:56,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 23:29:56,374 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:29:56,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:56,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1906468735, now seen corresponding path program 1 times [2024-06-27 23:29:56,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:56,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70207672] [2024-06-27 23:29:56,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:56,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:56,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:57,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:29:57,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:57,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70207672] [2024-06-27 23:29:57,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70207672] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:57,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:57,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 23:29:57,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691272672] [2024-06-27 23:29:57,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:57,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 23:29:57,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:57,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 23:29:57,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 23:29:57,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 53 [2024-06-27 23:29:57,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 47 transitions, 133 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:57,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:57,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 53 [2024-06-27 23:29:57,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:59,755 INFO L124 PetriNetUnfolderBase]: 9537/13296 cut-off events. [2024-06-27 23:29:59,755 INFO L125 PetriNetUnfolderBase]: For 2501/2501 co-relation queries the response was YES. [2024-06-27 23:29:59,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30059 conditions, 13296 events. 9537/13296 cut-off events. For 2501/2501 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 73957 event pairs, 6489 based on Foata normal form. 4/13293 useless extension candidates. Maximal degree in co-relation 30047. Up to 12918 conditions per place. [2024-06-27 23:29:59,881 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 53 selfloop transitions, 9 changer transitions 0/71 dead transitions. [2024-06-27 23:29:59,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 71 transitions, 323 flow [2024-06-27 23:29:59,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 23:29:59,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 23:29:59,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 130 transitions. [2024-06-27 23:29:59,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6132075471698113 [2024-06-27 23:29:59,884 INFO L175 Difference]: Start difference. First operand has 55 places, 47 transitions, 133 flow. Second operand 4 states and 130 transitions. [2024-06-27 23:29:59,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 71 transitions, 323 flow [2024-06-27 23:29:59,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 71 transitions, 318 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 23:29:59,887 INFO L231 Difference]: Finished difference. Result has 58 places, 51 transitions, 181 flow [2024-06-27 23:29:59,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=181, PETRI_PLACES=58, PETRI_TRANSITIONS=51} [2024-06-27 23:29:59,888 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 2 predicate places. [2024-06-27 23:29:59,889 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 181 flow [2024-06-27 23:29:59,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:59,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:59,889 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:59,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 23:29:59,890 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:29:59,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:59,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1029009575, now seen corresponding path program 1 times [2024-06-27 23:29:59,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:59,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065748924] [2024-06-27 23:29:59,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:59,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:00,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:01,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:30:01,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:01,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065748924] [2024-06-27 23:30:01,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065748924] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:01,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:01,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 23:30:01,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310087237] [2024-06-27 23:30:01,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:01,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 23:30:01,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:01,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 23:30:01,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 23:30:01,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-27 23:30:01,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 51 transitions, 181 flow. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 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 23:30:01,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:01,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-27 23:30:01,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:03,629 INFO L124 PetriNetUnfolderBase]: 11599/16108 cut-off events. [2024-06-27 23:30:03,630 INFO L125 PetriNetUnfolderBase]: For 8486/8486 co-relation queries the response was YES. [2024-06-27 23:30:03,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40229 conditions, 16108 events. 11599/16108 cut-off events. For 8486/8486 co-relation queries the response was YES. Maximal size of possible extension queue 568. Compared 89650 event pairs, 6384 based on Foata normal form. 7/16110 useless extension candidates. Maximal degree in co-relation 40215. Up to 15563 conditions per place. [2024-06-27 23:30:03,762 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 72 selfloop transitions, 21 changer transitions 0/101 dead transitions. [2024-06-27 23:30:03,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 101 transitions, 541 flow [2024-06-27 23:30:03,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 23:30:03,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 23:30:03,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 166 transitions. [2024-06-27 23:30:03,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6264150943396226 [2024-06-27 23:30:03,770 INFO L175 Difference]: Start difference. First operand has 58 places, 51 transitions, 181 flow. Second operand 5 states and 166 transitions. [2024-06-27 23:30:03,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 101 transitions, 541 flow [2024-06-27 23:30:03,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 101 transitions, 522 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-27 23:30:03,778 INFO L231 Difference]: Finished difference. Result has 63 places, 65 transitions, 312 flow [2024-06-27 23:30:03,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=312, PETRI_PLACES=63, PETRI_TRANSITIONS=65} [2024-06-27 23:30:03,780 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 7 predicate places. [2024-06-27 23:30:03,780 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 65 transitions, 312 flow [2024-06-27 23:30:03,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 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 23:30:03,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:03,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:03,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 23:30:03,781 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:30:03,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:03,782 INFO L85 PathProgramCache]: Analyzing trace with hash -179169438, now seen corresponding path program 1 times [2024-06-27 23:30:03,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:03,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129235602] [2024-06-27 23:30:03,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:03,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:03,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:05,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:30:05,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:05,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129235602] [2024-06-27 23:30:05,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129235602] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:05,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:05,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:30:05,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517657575] [2024-06-27 23:30:05,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:05,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:30:05,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:05,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:30:05,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:30:05,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-27 23:30:05,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 65 transitions, 312 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:05,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:05,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-27 23:30:05,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:07,297 INFO L124 PetriNetUnfolderBase]: 11628/16135 cut-off events. [2024-06-27 23:30:07,297 INFO L125 PetriNetUnfolderBase]: For 20285/20290 co-relation queries the response was YES. [2024-06-27 23:30:07,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46755 conditions, 16135 events. 11628/16135 cut-off events. For 20285/20290 co-relation queries the response was YES. Maximal size of possible extension queue 568. Compared 89593 event pairs, 5283 based on Foata normal form. 18/16148 useless extension candidates. Maximal degree in co-relation 46738. Up to 15528 conditions per place. [2024-06-27 23:30:07,461 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 79 selfloop transitions, 25 changer transitions 0/112 dead transitions. [2024-06-27 23:30:07,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 112 transitions, 686 flow [2024-06-27 23:30:07,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:30:07,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:30:07,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 192 transitions. [2024-06-27 23:30:07,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6037735849056604 [2024-06-27 23:30:07,463 INFO L175 Difference]: Start difference. First operand has 63 places, 65 transitions, 312 flow. Second operand 6 states and 192 transitions. [2024-06-27 23:30:07,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 112 transitions, 686 flow [2024-06-27 23:30:07,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 112 transitions, 674 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-06-27 23:30:07,480 INFO L231 Difference]: Finished difference. Result has 68 places, 68 transitions, 389 flow [2024-06-27 23:30:07,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=389, PETRI_PLACES=68, PETRI_TRANSITIONS=68} [2024-06-27 23:30:07,482 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 12 predicate places. [2024-06-27 23:30:07,483 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 68 transitions, 389 flow [2024-06-27 23:30:07,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:07,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:07,483 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:07,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 23:30:07,484 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:30:07,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:07,485 INFO L85 PathProgramCache]: Analyzing trace with hash 2052382074, now seen corresponding path program 1 times [2024-06-27 23:30:07,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:07,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022547223] [2024-06-27 23:30:07,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:07,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:07,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:09,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:30:09,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:09,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022547223] [2024-06-27 23:30:09,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022547223] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:09,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:09,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 23:30:09,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016140315] [2024-06-27 23:30:09,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:09,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 23:30:09,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:09,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 23:30:09,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 23:30:09,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-27 23:30:09,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 68 transitions, 389 flow. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 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 23:30:09,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:09,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-27 23:30:09,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:10,686 INFO L124 PetriNetUnfolderBase]: 9927/14145 cut-off events. [2024-06-27 23:30:10,686 INFO L125 PetriNetUnfolderBase]: For 25795/25795 co-relation queries the response was YES. [2024-06-27 23:30:10,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44268 conditions, 14145 events. 9927/14145 cut-off events. For 25795/25795 co-relation queries the response was YES. Maximal size of possible extension queue 510. Compared 81413 event pairs, 5267 based on Foata normal form. 3/13949 useless extension candidates. Maximal degree in co-relation 44247. Up to 13472 conditions per place. [2024-06-27 23:30:10,807 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 66 selfloop transitions, 12 changer transitions 0/86 dead transitions. [2024-06-27 23:30:10,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 86 transitions, 601 flow [2024-06-27 23:30:10,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 23:30:10,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 23:30:10,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 133 transitions. [2024-06-27 23:30:10,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5018867924528302 [2024-06-27 23:30:10,811 INFO L175 Difference]: Start difference. First operand has 68 places, 68 transitions, 389 flow. Second operand 5 states and 133 transitions. [2024-06-27 23:30:10,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 86 transitions, 601 flow [2024-06-27 23:30:10,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 86 transitions, 530 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-27 23:30:10,825 INFO L231 Difference]: Finished difference. Result has 70 places, 70 transitions, 374 flow [2024-06-27 23:30:10,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=374, PETRI_PLACES=70, PETRI_TRANSITIONS=70} [2024-06-27 23:30:10,833 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 14 predicate places. [2024-06-27 23:30:10,834 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 70 transitions, 374 flow [2024-06-27 23:30:10,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 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 23:30:10,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:10,835 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:10,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 23:30:10,835 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:30:10,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:10,836 INFO L85 PathProgramCache]: Analyzing trace with hash -801615496, now seen corresponding path program 1 times [2024-06-27 23:30:10,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:10,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499440113] [2024-06-27 23:30:10,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:10,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:10,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:12,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:30:12,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:12,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499440113] [2024-06-27 23:30:12,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499440113] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:12,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:12,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:30:12,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618029478] [2024-06-27 23:30:12,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:12,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:30:12,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:12,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:30:12,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:30:12,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-27 23:30:12,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 70 transitions, 374 flow. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:12,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:12,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-27 23:30:12,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:14,466 INFO L124 PetriNetUnfolderBase]: 9909/14151 cut-off events. [2024-06-27 23:30:14,466 INFO L125 PetriNetUnfolderBase]: For 29838/29838 co-relation queries the response was YES. [2024-06-27 23:30:14,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44950 conditions, 14151 events. 9909/14151 cut-off events. For 29838/29838 co-relation queries the response was YES. Maximal size of possible extension queue 506. Compared 81337 event pairs, 5029 based on Foata normal form. 6/13947 useless extension candidates. Maximal degree in co-relation 44925. Up to 13418 conditions per place. [2024-06-27 23:30:14,581 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 74 selfloop transitions, 16 changer transitions 0/98 dead transitions. [2024-06-27 23:30:14,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 98 transitions, 644 flow [2024-06-27 23:30:14,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:30:14,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:30:14,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 159 transitions. [2024-06-27 23:30:14,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 23:30:14,587 INFO L175 Difference]: Start difference. First operand has 70 places, 70 transitions, 374 flow. Second operand 6 states and 159 transitions. [2024-06-27 23:30:14,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 98 transitions, 644 flow [2024-06-27 23:30:14,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 98 transitions, 620 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 23:30:14,603 INFO L231 Difference]: Finished difference. Result has 73 places, 74 transitions, 431 flow [2024-06-27 23:30:14,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=431, PETRI_PLACES=73, PETRI_TRANSITIONS=74} [2024-06-27 23:30:14,607 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 17 predicate places. [2024-06-27 23:30:14,607 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 74 transitions, 431 flow [2024-06-27 23:30:14,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:14,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:14,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:14,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 23:30:14,608 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:30:14,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:14,608 INFO L85 PathProgramCache]: Analyzing trace with hash -89675967, now seen corresponding path program 1 times [2024-06-27 23:30:14,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:14,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18564948] [2024-06-27 23:30:14,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:14,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:14,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:16,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:30:16,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:16,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18564948] [2024-06-27 23:30:16,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18564948] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:16,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:16,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:30:16,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518388935] [2024-06-27 23:30:16,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:16,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:30:16,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:16,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:30:16,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:30:16,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-27 23:30:16,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 74 transitions, 431 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:16,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:16,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-27 23:30:16,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:18,502 INFO L124 PetriNetUnfolderBase]: 11750/16267 cut-off events. [2024-06-27 23:30:18,503 INFO L125 PetriNetUnfolderBase]: For 48219/48229 co-relation queries the response was YES. [2024-06-27 23:30:18,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56194 conditions, 16267 events. 11750/16267 cut-off events. For 48219/48229 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 89471 event pairs, 6414 based on Foata normal form. 14/16274 useless extension candidates. Maximal degree in co-relation 56167. Up to 15690 conditions per place. [2024-06-27 23:30:18,594 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 80 selfloop transitions, 38 changer transitions 0/125 dead transitions. [2024-06-27 23:30:18,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 125 transitions, 955 flow [2024-06-27 23:30:18,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:30:18,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:30:18,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 168 transitions. [2024-06-27 23:30:18,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5283018867924528 [2024-06-27 23:30:18,596 INFO L175 Difference]: Start difference. First operand has 73 places, 74 transitions, 431 flow. Second operand 6 states and 168 transitions. [2024-06-27 23:30:18,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 125 transitions, 955 flow [2024-06-27 23:30:18,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 125 transitions, 914 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-27 23:30:18,610 INFO L231 Difference]: Finished difference. Result has 77 places, 92 transitions, 623 flow [2024-06-27 23:30:18,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=623, PETRI_PLACES=77, PETRI_TRANSITIONS=92} [2024-06-27 23:30:18,611 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 21 predicate places. [2024-06-27 23:30:18,611 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 92 transitions, 623 flow [2024-06-27 23:30:18,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:18,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:18,612 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:18,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 23:30:18,612 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:30:18,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:18,613 INFO L85 PathProgramCache]: Analyzing trace with hash 949209625, now seen corresponding path program 2 times [2024-06-27 23:30:18,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:18,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092115337] [2024-06-27 23:30:18,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:18,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:18,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:20,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:30:20,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:20,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092115337] [2024-06-27 23:30:20,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092115337] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:20,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:20,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:30:20,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733348980] [2024-06-27 23:30:20,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:20,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:30:20,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:20,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:30:20,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:30:20,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-27 23:30:20,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 92 transitions, 623 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:20,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:20,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-27 23:30:20,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:22,270 INFO L124 PetriNetUnfolderBase]: 11735/16229 cut-off events. [2024-06-27 23:30:22,270 INFO L125 PetriNetUnfolderBase]: For 56555/56557 co-relation queries the response was YES. [2024-06-27 23:30:22,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57656 conditions, 16229 events. 11735/16229 cut-off events. For 56555/56557 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 88911 event pairs, 6416 based on Foata normal form. 5/16225 useless extension candidates. Maximal degree in co-relation 57625. Up to 15675 conditions per place. [2024-06-27 23:30:22,360 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 71 selfloop transitions, 42 changer transitions 0/120 dead transitions. [2024-06-27 23:30:22,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 120 transitions, 975 flow [2024-06-27 23:30:22,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:30:22,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:30:22,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 163 transitions. [2024-06-27 23:30:22,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5125786163522013 [2024-06-27 23:30:22,361 INFO L175 Difference]: Start difference. First operand has 77 places, 92 transitions, 623 flow. Second operand 6 states and 163 transitions. [2024-06-27 23:30:22,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 120 transitions, 975 flow [2024-06-27 23:30:22,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 120 transitions, 933 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-06-27 23:30:22,382 INFO L231 Difference]: Finished difference. Result has 82 places, 93 transitions, 688 flow [2024-06-27 23:30:22,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=581, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=688, PETRI_PLACES=82, PETRI_TRANSITIONS=93} [2024-06-27 23:30:22,383 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 26 predicate places. [2024-06-27 23:30:22,383 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 93 transitions, 688 flow [2024-06-27 23:30:22,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:22,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:22,384 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:22,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 23:30:22,384 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:30:22,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:22,384 INFO L85 PathProgramCache]: Analyzing trace with hash -13240777, now seen corresponding path program 3 times [2024-06-27 23:30:22,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:22,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026344933] [2024-06-27 23:30:22,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:22,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:22,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:23,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:30:23,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:23,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026344933] [2024-06-27 23:30:23,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026344933] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:23,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:23,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:30:23,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314304704] [2024-06-27 23:30:23,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:23,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:30:23,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:23,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:30:23,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:30:23,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-27 23:30:23,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 93 transitions, 688 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:23,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:23,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-27 23:30:23,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:25,485 INFO L124 PetriNetUnfolderBase]: 11846/16405 cut-off events. [2024-06-27 23:30:25,486 INFO L125 PetriNetUnfolderBase]: For 67145/67157 co-relation queries the response was YES. [2024-06-27 23:30:25,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59885 conditions, 16405 events. 11846/16405 cut-off events. For 67145/67157 co-relation queries the response was YES. Maximal size of possible extension queue 565. Compared 90291 event pairs, 6398 based on Foata normal form. 16/16418 useless extension candidates. Maximal degree in co-relation 59850. Up to 15752 conditions per place. [2024-06-27 23:30:25,593 INFO L140 encePairwiseOnDemand]: 38/53 looper letters, 82 selfloop transitions, 60 changer transitions 0/149 dead transitions. [2024-06-27 23:30:25,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 149 transitions, 1301 flow [2024-06-27 23:30:25,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:30:25,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:30:25,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 186 transitions. [2024-06-27 23:30:25,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5013477088948787 [2024-06-27 23:30:25,596 INFO L175 Difference]: Start difference. First operand has 82 places, 93 transitions, 688 flow. Second operand 7 states and 186 transitions. [2024-06-27 23:30:25,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 149 transitions, 1301 flow [2024-06-27 23:30:25,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 149 transitions, 1216 flow, removed 17 selfloop flow, removed 2 redundant places. [2024-06-27 23:30:25,638 INFO L231 Difference]: Finished difference. Result has 89 places, 115 transitions, 1015 flow [2024-06-27 23:30:25,639 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=634, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1015, PETRI_PLACES=89, PETRI_TRANSITIONS=115} [2024-06-27 23:30:25,640 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 33 predicate places. [2024-06-27 23:30:25,640 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 115 transitions, 1015 flow [2024-06-27 23:30:25,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:25,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:25,641 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:25,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 23:30:25,641 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:30:25,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:25,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1515013359, now seen corresponding path program 1 times [2024-06-27 23:30:25,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:25,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596504057] [2024-06-27 23:30:25,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:25,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:25,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:27,433 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 23:30:27,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:27,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596504057] [2024-06-27 23:30:27,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596504057] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:27,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:27,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:30:27,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514062336] [2024-06-27 23:30:27,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:27,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:30:27,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:27,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:30:27,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:30:27,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-27 23:30:27,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 115 transitions, 1015 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:27,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:27,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-27 23:30:27,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:29,639 INFO L124 PetriNetUnfolderBase]: 12058/16593 cut-off events. [2024-06-27 23:30:29,639 INFO L125 PetriNetUnfolderBase]: For 82474/82476 co-relation queries the response was YES. [2024-06-27 23:30:29,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62853 conditions, 16593 events. 12058/16593 cut-off events. For 82474/82476 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 89675 event pairs, 4965 based on Foata normal form. 14/16597 useless extension candidates. Maximal degree in co-relation 62814. Up to 15674 conditions per place. [2024-06-27 23:30:29,782 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 98 selfloop transitions, 68 changer transitions 0/173 dead transitions. [2024-06-27 23:30:29,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 173 transitions, 1709 flow [2024-06-27 23:30:29,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:30:29,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:30:29,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 198 transitions. [2024-06-27 23:30:29,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5336927223719676 [2024-06-27 23:30:29,784 INFO L175 Difference]: Start difference. First operand has 89 places, 115 transitions, 1015 flow. Second operand 7 states and 198 transitions. [2024-06-27 23:30:29,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 173 transitions, 1709 flow [2024-06-27 23:30:29,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 173 transitions, 1646 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-27 23:30:29,844 INFO L231 Difference]: Finished difference. Result has 92 places, 128 transitions, 1216 flow [2024-06-27 23:30:29,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=952, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1216, PETRI_PLACES=92, PETRI_TRANSITIONS=128} [2024-06-27 23:30:29,845 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 36 predicate places. [2024-06-27 23:30:29,845 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 128 transitions, 1216 flow [2024-06-27 23:30:29,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:29,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:29,845 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:29,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 23:30:29,846 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:30:29,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:29,846 INFO L85 PathProgramCache]: Analyzing trace with hash -639271657, now seen corresponding path program 2 times [2024-06-27 23:30:29,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:29,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842671164] [2024-06-27 23:30:29,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:29,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:29,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:31,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:30:31,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:31,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842671164] [2024-06-27 23:30:31,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842671164] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:31,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:31,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:30:31,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312112461] [2024-06-27 23:30:31,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:31,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:30:31,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:31,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:30:31,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:30:31,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-27 23:30:31,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 128 transitions, 1216 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:31,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:31,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-27 23:30:31,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:34,088 INFO L124 PetriNetUnfolderBase]: 12164/16736 cut-off events. [2024-06-27 23:30:34,088 INFO L125 PetriNetUnfolderBase]: For 105016/105018 co-relation queries the response was YES. [2024-06-27 23:30:34,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68487 conditions, 16736 events. 12164/16736 cut-off events. For 105016/105018 co-relation queries the response was YES. Maximal size of possible extension queue 544. Compared 90299 event pairs, 4941 based on Foata normal form. 8/16728 useless extension candidates. Maximal degree in co-relation 68447. Up to 15749 conditions per place. [2024-06-27 23:30:34,189 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 98 selfloop transitions, 84 changer transitions 0/189 dead transitions. [2024-06-27 23:30:34,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 189 transitions, 2044 flow [2024-06-27 23:30:34,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:30:34,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:30:34,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 200 transitions. [2024-06-27 23:30:34,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5390835579514824 [2024-06-27 23:30:34,192 INFO L175 Difference]: Start difference. First operand has 92 places, 128 transitions, 1216 flow. Second operand 7 states and 200 transitions. [2024-06-27 23:30:34,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 189 transitions, 2044 flow [2024-06-27 23:30:34,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 189 transitions, 1978 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-27 23:30:34,264 INFO L231 Difference]: Finished difference. Result has 96 places, 141 transitions, 1466 flow [2024-06-27 23:30:34,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1150, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1466, PETRI_PLACES=96, PETRI_TRANSITIONS=141} [2024-06-27 23:30:34,265 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 40 predicate places. [2024-06-27 23:30:34,265 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 141 transitions, 1466 flow [2024-06-27 23:30:34,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:34,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:34,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:34,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 23:30:34,266 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:30:34,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:34,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1027465815, now seen corresponding path program 3 times [2024-06-27 23:30:34,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:34,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692341659] [2024-06-27 23:30:34,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:34,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:34,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:35,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:30:35,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:35,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692341659] [2024-06-27 23:30:35,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692341659] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:35,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:35,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:30:35,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117192297] [2024-06-27 23:30:35,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:35,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:30:35,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:35,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:30:35,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:30:36,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-27 23:30:36,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 141 transitions, 1466 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:36,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:36,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-27 23:30:36,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:38,398 INFO L124 PetriNetUnfolderBase]: 12146/16712 cut-off events. [2024-06-27 23:30:38,399 INFO L125 PetriNetUnfolderBase]: For 122926/122928 co-relation queries the response was YES. [2024-06-27 23:30:38,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70980 conditions, 16712 events. 12146/16712 cut-off events. For 122926/122928 co-relation queries the response was YES. Maximal size of possible extension queue 544. Compared 90349 event pairs, 4941 based on Foata normal form. 8/16704 useless extension candidates. Maximal degree in co-relation 70937. Up to 15740 conditions per place. [2024-06-27 23:30:38,521 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 88 selfloop transitions, 88 changer transitions 0/183 dead transitions. [2024-06-27 23:30:38,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 183 transitions, 2082 flow [2024-06-27 23:30:38,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:30:38,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:30:38,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 196 transitions. [2024-06-27 23:30:38,523 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5283018867924528 [2024-06-27 23:30:38,523 INFO L175 Difference]: Start difference. First operand has 96 places, 141 transitions, 1466 flow. Second operand 7 states and 196 transitions. [2024-06-27 23:30:38,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 183 transitions, 2082 flow [2024-06-27 23:30:38,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 183 transitions, 2040 flow, removed 19 selfloop flow, removed 1 redundant places. [2024-06-27 23:30:38,620 INFO L231 Difference]: Finished difference. Result has 102 places, 141 transitions, 1613 flow [2024-06-27 23:30:38,620 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1424, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1613, PETRI_PLACES=102, PETRI_TRANSITIONS=141} [2024-06-27 23:30:38,620 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 46 predicate places. [2024-06-27 23:30:38,621 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 141 transitions, 1613 flow [2024-06-27 23:30:38,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:38,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:38,621 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:38,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 23:30:38,621 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:30:38,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:38,622 INFO L85 PathProgramCache]: Analyzing trace with hash -381863687, now seen corresponding path program 4 times [2024-06-27 23:30:38,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:38,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944468918] [2024-06-27 23:30:38,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:38,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:38,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:39,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:30:39,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:39,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944468918] [2024-06-27 23:30:39,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944468918] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:39,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:39,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:30:39,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54014012] [2024-06-27 23:30:39,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:39,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:30:39,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:39,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:30:39,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:30:40,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-27 23:30:40,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 141 transitions, 1613 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:40,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:40,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-27 23:30:40,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:42,401 INFO L124 PetriNetUnfolderBase]: 12376/17066 cut-off events. [2024-06-27 23:30:42,401 INFO L125 PetriNetUnfolderBase]: For 139482/139484 co-relation queries the response was YES. [2024-06-27 23:30:42,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73914 conditions, 17066 events. 12376/17066 cut-off events. For 139482/139484 co-relation queries the response was YES. Maximal size of possible extension queue 547. Compared 92765 event pairs, 4948 based on Foata normal form. 14/17074 useless extension candidates. Maximal degree in co-relation 73867. Up to 15904 conditions per place. [2024-06-27 23:30:42,543 INFO L140 encePairwiseOnDemand]: 37/53 looper letters, 109 selfloop transitions, 100 changer transitions 0/216 dead transitions. [2024-06-27 23:30:42,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 216 transitions, 2628 flow [2024-06-27 23:30:42,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:30:42,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:30:42,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 224 transitions. [2024-06-27 23:30:42,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5283018867924528 [2024-06-27 23:30:42,544 INFO L175 Difference]: Start difference. First operand has 102 places, 141 transitions, 1613 flow. Second operand 8 states and 224 transitions. [2024-06-27 23:30:42,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 216 transitions, 2628 flow [2024-06-27 23:30:42,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 216 transitions, 2366 flow, removed 42 selfloop flow, removed 4 redundant places. [2024-06-27 23:30:42,701 INFO L231 Difference]: Finished difference. Result has 107 places, 162 transitions, 1868 flow [2024-06-27 23:30:42,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1412, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1868, PETRI_PLACES=107, PETRI_TRANSITIONS=162} [2024-06-27 23:30:42,702 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 51 predicate places. [2024-06-27 23:30:42,702 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 162 transitions, 1868 flow [2024-06-27 23:30:42,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:42,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:42,702 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:42,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 23:30:42,703 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:30:42,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:42,703 INFO L85 PathProgramCache]: Analyzing trace with hash 535122826, now seen corresponding path program 1 times [2024-06-27 23:30:42,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:42,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117602796] [2024-06-27 23:30:42,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:42,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:42,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:44,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:30:44,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:44,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117602796] [2024-06-27 23:30:44,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117602796] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:44,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:44,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 23:30:44,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638853805] [2024-06-27 23:30:44,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:44,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 23:30:44,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:44,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 23:30:44,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 23:30:44,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-27 23:30:44,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 162 transitions, 1868 flow. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:44,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:44,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-27 23:30:44,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:45,894 INFO L124 PetriNetUnfolderBase]: 10256/14924 cut-off events. [2024-06-27 23:30:45,895 INFO L125 PetriNetUnfolderBase]: For 130845/130865 co-relation queries the response was YES. [2024-06-27 23:30:45,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64633 conditions, 14924 events. 10256/14924 cut-off events. For 130845/130865 co-relation queries the response was YES. Maximal size of possible extension queue 509. Compared 87878 event pairs, 4734 based on Foata normal form. 19/14734 useless extension candidates. Maximal degree in co-relation 64584. Up to 13777 conditions per place. [2024-06-27 23:30:46,024 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 147 selfloop transitions, 12 changer transitions 0/179 dead transitions. [2024-06-27 23:30:46,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 179 transitions, 2266 flow [2024-06-27 23:30:46,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 23:30:46,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 23:30:46,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 133 transitions. [2024-06-27 23:30:46,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5018867924528302 [2024-06-27 23:30:46,025 INFO L175 Difference]: Start difference. First operand has 107 places, 162 transitions, 1868 flow. Second operand 5 states and 133 transitions. [2024-06-27 23:30:46,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 179 transitions, 2266 flow [2024-06-27 23:30:46,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 179 transitions, 2148 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-06-27 23:30:46,145 INFO L231 Difference]: Finished difference. Result has 109 places, 166 transitions, 1831 flow [2024-06-27 23:30:46,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1756, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1831, PETRI_PLACES=109, PETRI_TRANSITIONS=166} [2024-06-27 23:30:46,145 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 53 predicate places. [2024-06-27 23:30:46,146 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 166 transitions, 1831 flow [2024-06-27 23:30:46,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:46,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:46,146 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:46,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 23:30:46,146 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:30:46,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:46,147 INFO L85 PathProgramCache]: Analyzing trace with hash 583208573, now seen corresponding path program 1 times [2024-06-27 23:30:46,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:46,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035266653] [2024-06-27 23:30:46,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:46,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:46,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:48,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:30:48,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:48,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035266653] [2024-06-27 23:30:48,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035266653] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:48,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:48,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:30:48,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013308285] [2024-06-27 23:30:48,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:48,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:30:48,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:48,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:30:48,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:30:48,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-27 23:30:48,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 166 transitions, 1831 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:48,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:48,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-27 23:30:48,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:51,272 INFO L124 PetriNetUnfolderBase]: 12449/17384 cut-off events. [2024-06-27 23:30:51,272 INFO L125 PetriNetUnfolderBase]: For 173713/173719 co-relation queries the response was YES. [2024-06-27 23:30:51,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78631 conditions, 17384 events. 12449/17384 cut-off events. For 173713/173719 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 96001 event pairs, 4983 based on Foata normal form. 16/17390 useless extension candidates. Maximal degree in co-relation 78580. Up to 15965 conditions per place. [2024-06-27 23:30:51,397 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 114 selfloop transitions, 105 changer transitions 0/226 dead transitions. [2024-06-27 23:30:51,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 226 transitions, 2725 flow [2024-06-27 23:30:51,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:30:51,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:30:51,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 236 transitions. [2024-06-27 23:30:51,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4947589098532495 [2024-06-27 23:30:51,406 INFO L175 Difference]: Start difference. First operand has 109 places, 166 transitions, 1831 flow. Second operand 9 states and 236 transitions. [2024-06-27 23:30:51,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 226 transitions, 2725 flow [2024-06-27 23:30:51,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 226 transitions, 2680 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-06-27 23:30:51,577 INFO L231 Difference]: Finished difference. Result has 115 places, 174 transitions, 2120 flow [2024-06-27 23:30:51,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1786, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2120, PETRI_PLACES=115, PETRI_TRANSITIONS=174} [2024-06-27 23:30:51,579 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 59 predicate places. [2024-06-27 23:30:51,579 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 174 transitions, 2120 flow [2024-06-27 23:30:51,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:51,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:51,580 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:51,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 23:30:51,580 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:30:51,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:51,581 INFO L85 PathProgramCache]: Analyzing trace with hash -259045817, now seen corresponding path program 2 times [2024-06-27 23:30:51,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:51,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026575699] [2024-06-27 23:30:51,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:51,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:51,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:53,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:30:53,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:53,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026575699] [2024-06-27 23:30:53,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026575699] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:53,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:53,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:30:53,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494764206] [2024-06-27 23:30:53,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:53,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:30:53,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:53,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:30:53,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:30:53,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-27 23:30:53,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 174 transitions, 2120 flow. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 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 23:30:53,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:53,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-27 23:30:53,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:56,004 INFO L124 PetriNetUnfolderBase]: 12529/17533 cut-off events. [2024-06-27 23:30:56,004 INFO L125 PetriNetUnfolderBase]: For 198175/198191 co-relation queries the response was YES. [2024-06-27 23:30:56,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81532 conditions, 17533 events. 12529/17533 cut-off events. For 198175/198191 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 97197 event pairs, 4994 based on Foata normal form. 26/17549 useless extension candidates. Maximal degree in co-relation 81480. Up to 16035 conditions per place. [2024-06-27 23:30:56,157 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 108 selfloop transitions, 114 changer transitions 0/229 dead transitions. [2024-06-27 23:30:56,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 229 transitions, 3034 flow [2024-06-27 23:30:56,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:30:56,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:30:56,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 200 transitions. [2024-06-27 23:30:56,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5390835579514824 [2024-06-27 23:30:56,159 INFO L175 Difference]: Start difference. First operand has 115 places, 174 transitions, 2120 flow. Second operand 7 states and 200 transitions. [2024-06-27 23:30:56,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 229 transitions, 3034 flow [2024-06-27 23:30:56,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 229 transitions, 2746 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-06-27 23:30:56,312 INFO L231 Difference]: Finished difference. Result has 116 places, 183 transitions, 2265 flow [2024-06-27 23:30:56,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1848, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2265, PETRI_PLACES=116, PETRI_TRANSITIONS=183} [2024-06-27 23:30:56,313 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 60 predicate places. [2024-06-27 23:30:56,313 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 183 transitions, 2265 flow [2024-06-27 23:30:56,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 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 23:30:56,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:56,314 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:56,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 23:30:56,314 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:30:56,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:56,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1657415967, now seen corresponding path program 3 times [2024-06-27 23:30:56,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:56,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094421578] [2024-06-27 23:30:56,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:56,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:56,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:58,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:30:58,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:58,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094421578] [2024-06-27 23:30:58,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094421578] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:58,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:58,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:30:58,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968872543] [2024-06-27 23:30:58,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:58,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:30:58,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:58,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:30:58,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:30:58,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-27 23:30:58,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 183 transitions, 2265 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:58,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:58,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-27 23:30:58,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:31:01,076 INFO L124 PetriNetUnfolderBase]: 12609/17625 cut-off events. [2024-06-27 23:31:01,077 INFO L125 PetriNetUnfolderBase]: For 218110/218116 co-relation queries the response was YES. [2024-06-27 23:31:01,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83799 conditions, 17625 events. 12609/17625 cut-off events. For 218110/218116 co-relation queries the response was YES. Maximal size of possible extension queue 562. Compared 97572 event pairs, 4958 based on Foata normal form. 16/17616 useless extension candidates. Maximal degree in co-relation 83745. Up to 16105 conditions per place. [2024-06-27 23:31:01,235 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 112 selfloop transitions, 127 changer transitions 0/246 dead transitions. [2024-06-27 23:31:01,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 246 transitions, 3182 flow [2024-06-27 23:31:01,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:31:01,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:31:01,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 232 transitions. [2024-06-27 23:31:01,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4863731656184486 [2024-06-27 23:31:01,237 INFO L175 Difference]: Start difference. First operand has 116 places, 183 transitions, 2265 flow. Second operand 9 states and 232 transitions. [2024-06-27 23:31:01,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 246 transitions, 3182 flow [2024-06-27 23:31:01,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 246 transitions, 3018 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-27 23:31:01,483 INFO L231 Difference]: Finished difference. Result has 122 places, 191 transitions, 2494 flow [2024-06-27 23:31:01,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2109, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2494, PETRI_PLACES=122, PETRI_TRANSITIONS=191} [2024-06-27 23:31:01,484 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 66 predicate places. [2024-06-27 23:31:01,484 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 191 transitions, 2494 flow [2024-06-27 23:31:01,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:31:01,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:31:01,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:31:01,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 23:31:01,485 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:31:01,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:31:01,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1664166829, now seen corresponding path program 4 times [2024-06-27 23:31:01,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:31:01,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641842879] [2024-06-27 23:31:01,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:31:01,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:31:01,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:31:03,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:31:03,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:31:03,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641842879] [2024-06-27 23:31:03,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641842879] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:31:03,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:31:03,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:31:03,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658590455] [2024-06-27 23:31:03,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:31:03,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:31:03,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:31:03,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:31:03,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:31:03,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-27 23:31:03,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 191 transitions, 2494 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:31:03,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:31:03,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-27 23:31:03,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:31:06,554 INFO L124 PetriNetUnfolderBase]: 12639/17705 cut-off events. [2024-06-27 23:31:06,554 INFO L125 PetriNetUnfolderBase]: For 241136/241150 co-relation queries the response was YES. [2024-06-27 23:31:06,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85466 conditions, 17705 events. 12639/17705 cut-off events. For 241136/241150 co-relation queries the response was YES. Maximal size of possible extension queue 562. Compared 98482 event pairs, 4941 based on Foata normal form. 24/17715 useless extension candidates. Maximal degree in co-relation 85410. Up to 16131 conditions per place. [2024-06-27 23:31:06,673 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 117 selfloop transitions, 135 changer transitions 0/259 dead transitions. [2024-06-27 23:31:06,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 259 transitions, 3493 flow [2024-06-27 23:31:06,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:31:06,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:31:06,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 259 transitions. [2024-06-27 23:31:06,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48867924528301887 [2024-06-27 23:31:06,675 INFO L175 Difference]: Start difference. First operand has 122 places, 191 transitions, 2494 flow. Second operand 10 states and 259 transitions. [2024-06-27 23:31:06,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 259 transitions, 3493 flow [2024-06-27 23:31:06,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 259 transitions, 3123 flow, removed 53 selfloop flow, removed 7 redundant places. [2024-06-27 23:31:06,873 INFO L231 Difference]: Finished difference. Result has 125 places, 195 transitions, 2469 flow [2024-06-27 23:31:06,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2132, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2469, PETRI_PLACES=125, PETRI_TRANSITIONS=195} [2024-06-27 23:31:06,873 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 69 predicate places. [2024-06-27 23:31:06,873 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 195 transitions, 2469 flow [2024-06-27 23:31:06,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:31:06,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:31:06,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:31:06,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 23:31:06,874 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:31:06,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:31:06,874 INFO L85 PathProgramCache]: Analyzing trace with hash 160548285, now seen corresponding path program 5 times [2024-06-27 23:31:06,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:31:06,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870473182] [2024-06-27 23:31:06,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:31:06,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:31:06,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:31:08,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:31:08,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:31:08,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870473182] [2024-06-27 23:31:08,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870473182] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:31:08,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:31:08,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:31:08,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119063975] [2024-06-27 23:31:08,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:31:08,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:31:08,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:31:08,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:31:08,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:31:08,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-27 23:31:08,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 195 transitions, 2469 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:31:08,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:31:08,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-27 23:31:08,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:31:11,305 INFO L124 PetriNetUnfolderBase]: 12657/17731 cut-off events. [2024-06-27 23:31:11,305 INFO L125 PetriNetUnfolderBase]: For 258648/258650 co-relation queries the response was YES. [2024-06-27 23:31:11,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86442 conditions, 17731 events. 12657/17731 cut-off events. For 258648/258650 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 98461 event pairs, 4948 based on Foata normal form. 8/17733 useless extension candidates. Maximal degree in co-relation 86386. Up to 16148 conditions per place. [2024-06-27 23:31:11,446 INFO L140 encePairwiseOnDemand]: 37/53 looper letters, 120 selfloop transitions, 132 changer transitions 0/259 dead transitions. [2024-06-27 23:31:11,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 259 transitions, 3375 flow [2024-06-27 23:31:11,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:31:11,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:31:11,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 246 transitions. [2024-06-27 23:31:11,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5157232704402516 [2024-06-27 23:31:11,449 INFO L175 Difference]: Start difference. First operand has 125 places, 195 transitions, 2469 flow. Second operand 9 states and 246 transitions. [2024-06-27 23:31:11,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 259 transitions, 3375 flow [2024-06-27 23:31:11,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 259 transitions, 3125 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-27 23:31:11,718 INFO L231 Difference]: Finished difference. Result has 128 places, 199 transitions, 2548 flow [2024-06-27 23:31:11,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2228, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2548, PETRI_PLACES=128, PETRI_TRANSITIONS=199} [2024-06-27 23:31:11,718 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 72 predicate places. [2024-06-27 23:31:11,718 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 199 transitions, 2548 flow [2024-06-27 23:31:11,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:31:11,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:31:11,719 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:31:11,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 23:31:11,719 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:31:11,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:31:11,720 INFO L85 PathProgramCache]: Analyzing trace with hash -754082947, now seen corresponding path program 6 times [2024-06-27 23:31:11,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:31:11,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541179987] [2024-06-27 23:31:11,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:31:11,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:31:11,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:31:12,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:31:12,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:31:12,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541179987] [2024-06-27 23:31:12,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541179987] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:31:12,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:31:12,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:31:12,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610724155] [2024-06-27 23:31:12,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:31:12,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:31:12,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:31:12,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:31:12,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:31:13,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-27 23:31:13,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 199 transitions, 2548 flow. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 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 23:31:13,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:31:13,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-27 23:31:13,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:31:15,511 INFO L124 PetriNetUnfolderBase]: 12842/18044 cut-off events. [2024-06-27 23:31:15,512 INFO L125 PetriNetUnfolderBase]: For 288865/288881 co-relation queries the response was YES. [2024-06-27 23:31:15,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89033 conditions, 18044 events. 12842/18044 cut-off events. For 288865/288881 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 100802 event pairs, 4976 based on Foata normal form. 22/18060 useless extension candidates. Maximal degree in co-relation 88977. Up to 16303 conditions per place. [2024-06-27 23:31:15,688 INFO L140 encePairwiseOnDemand]: 37/53 looper letters, 109 selfloop transitions, 159 changer transitions 0/275 dead transitions. [2024-06-27 23:31:15,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 275 transitions, 3674 flow [2024-06-27 23:31:15,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:31:15,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:31:15,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 220 transitions. [2024-06-27 23:31:15,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5188679245283019 [2024-06-27 23:31:15,690 INFO L175 Difference]: Start difference. First operand has 128 places, 199 transitions, 2548 flow. Second operand 8 states and 220 transitions. [2024-06-27 23:31:15,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 275 transitions, 3674 flow [2024-06-27 23:31:15,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 275 transitions, 3216 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-27 23:31:16,000 INFO L231 Difference]: Finished difference. Result has 129 places, 231 transitions, 3016 flow [2024-06-27 23:31:16,001 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2172, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3016, PETRI_PLACES=129, PETRI_TRANSITIONS=231} [2024-06-27 23:31:16,001 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 73 predicate places. [2024-06-27 23:31:16,001 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 231 transitions, 3016 flow [2024-06-27 23:31:16,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 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 23:31:16,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:31:16,001 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:31:16,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 23:31:16,002 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:31:16,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:31:16,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1665044664, now seen corresponding path program 1 times [2024-06-27 23:31:16,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:31:16,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661730430] [2024-06-27 23:31:16,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:31:16,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:31:16,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:31:18,944 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 23:31:18,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:31:18,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661730430] [2024-06-27 23:31:18,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661730430] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:31:18,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:31:18,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:31:18,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567592159] [2024-06-27 23:31:18,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:31:18,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:31:18,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:31:18,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:31:18,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:31:19,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-27 23:31:19,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 231 transitions, 3016 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:31:19,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:31:19,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-27 23:31:19,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:31:21,745 INFO L124 PetriNetUnfolderBase]: 12827/17975 cut-off events. [2024-06-27 23:31:21,746 INFO L125 PetriNetUnfolderBase]: For 309287/309289 co-relation queries the response was YES. [2024-06-27 23:31:21,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90748 conditions, 17975 events. 12827/17975 cut-off events. For 309287/309289 co-relation queries the response was YES. Maximal size of possible extension queue 558. Compared 99810 event pairs, 5454 based on Foata normal form. 6/17979 useless extension candidates. Maximal degree in co-relation 90689. Up to 17270 conditions per place. [2024-06-27 23:31:21,900 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 246 selfloop transitions, 23 changer transitions 0/276 dead transitions. [2024-06-27 23:31:21,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 276 transitions, 3756 flow [2024-06-27 23:31:21,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:31:21,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:31:21,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 214 transitions. [2024-06-27 23:31:21,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44863731656184486 [2024-06-27 23:31:21,902 INFO L175 Difference]: Start difference. First operand has 129 places, 231 transitions, 3016 flow. Second operand 9 states and 214 transitions. [2024-06-27 23:31:21,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 276 transitions, 3756 flow [2024-06-27 23:31:22,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 276 transitions, 3540 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-27 23:31:22,260 INFO L231 Difference]: Finished difference. Result has 135 places, 238 transitions, 2953 flow [2024-06-27 23:31:22,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2806, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2953, PETRI_PLACES=135, PETRI_TRANSITIONS=238} [2024-06-27 23:31:22,260 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 79 predicate places. [2024-06-27 23:31:22,260 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 238 transitions, 2953 flow [2024-06-27 23:31:22,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:31:22,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:31:22,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:31:22,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 23:31:22,261 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:31:22,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:31:22,261 INFO L85 PathProgramCache]: Analyzing trace with hash -591059481, now seen corresponding path program 1 times [2024-06-27 23:31:22,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:31:22,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470601786] [2024-06-27 23:31:22,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:31:22,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:31:22,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:31:23,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:31:23,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:31:23,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470601786] [2024-06-27 23:31:23,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470601786] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:31:23,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:31:23,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:31:23,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070811148] [2024-06-27 23:31:23,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:31:23,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:31:23,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:31:23,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:31:23,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:31:23,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-27 23:31:23,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 238 transitions, 2953 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:31:23,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:31:23,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-27 23:31:23,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:31:25,773 INFO L124 PetriNetUnfolderBase]: 12314/17427 cut-off events. [2024-06-27 23:31:25,773 INFO L125 PetriNetUnfolderBase]: For 334426/334448 co-relation queries the response was YES. [2024-06-27 23:31:25,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90999 conditions, 17427 events. 12314/17427 cut-off events. For 334426/334448 co-relation queries the response was YES. Maximal size of possible extension queue 557. Compared 98893 event pairs, 5515 based on Foata normal form. 23/17421 useless extension candidates. Maximal degree in co-relation 90938. Up to 16468 conditions per place. [2024-06-27 23:31:25,975 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 227 selfloop transitions, 24 changer transitions 0/271 dead transitions. [2024-06-27 23:31:25,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 271 transitions, 3715 flow [2024-06-27 23:31:25,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:31:25,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:31:25,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 157 transitions. [2024-06-27 23:31:25,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4937106918238994 [2024-06-27 23:31:25,976 INFO L175 Difference]: Start difference. First operand has 135 places, 238 transitions, 2953 flow. Second operand 6 states and 157 transitions. [2024-06-27 23:31:25,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 271 transitions, 3715 flow [2024-06-27 23:31:26,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 271 transitions, 3527 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-27 23:31:26,399 INFO L231 Difference]: Finished difference. Result has 134 places, 252 transitions, 2979 flow [2024-06-27 23:31:26,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2765, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2979, PETRI_PLACES=134, PETRI_TRANSITIONS=252} [2024-06-27 23:31:26,400 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 78 predicate places. [2024-06-27 23:31:26,400 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 252 transitions, 2979 flow [2024-06-27 23:31:26,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:31:26,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:31:26,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:31:26,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 23:31:26,401 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:31:26,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:31:26,401 INFO L85 PathProgramCache]: Analyzing trace with hash 894951060, now seen corresponding path program 1 times [2024-06-27 23:31:26,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:31:26,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755624903] [2024-06-27 23:31:26,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:31:26,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:31:26,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:31:28,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:31:28,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:31:28,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755624903] [2024-06-27 23:31:28,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755624903] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:31:28,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:31:28,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:31:28,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502105063] [2024-06-27 23:31:28,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:31:28,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:31:28,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:31:28,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:31:28,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:31:28,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-27 23:31:28,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 252 transitions, 2979 flow. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 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 23:31:28,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:31:28,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-27 23:31:28,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:31:31,029 INFO L124 PetriNetUnfolderBase]: 13290/18676 cut-off events. [2024-06-27 23:31:31,030 INFO L125 PetriNetUnfolderBase]: For 381402/381533 co-relation queries the response was YES. [2024-06-27 23:31:31,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101926 conditions, 18676 events. 13290/18676 cut-off events. For 381402/381533 co-relation queries the response was YES. Maximal size of possible extension queue 590. Compared 104988 event pairs, 5568 based on Foata normal form. 18/18639 useless extension candidates. Maximal degree in co-relation 101863. Up to 17522 conditions per place. [2024-06-27 23:31:31,176 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 207 selfloop transitions, 70 changer transitions 0/287 dead transitions. [2024-06-27 23:31:31,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 287 transitions, 3691 flow [2024-06-27 23:31:31,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:31:31,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:31:31,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-06-27 23:31:31,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4693396226415094 [2024-06-27 23:31:31,178 INFO L175 Difference]: Start difference. First operand has 134 places, 252 transitions, 2979 flow. Second operand 8 states and 199 transitions. [2024-06-27 23:31:31,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 287 transitions, 3691 flow [2024-06-27 23:31:31,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 287 transitions, 3650 flow, removed 19 selfloop flow, removed 1 redundant places. [2024-06-27 23:31:31,578 INFO L231 Difference]: Finished difference. Result has 141 places, 255 transitions, 3140 flow [2024-06-27 23:31:31,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2938, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3140, PETRI_PLACES=141, PETRI_TRANSITIONS=255} [2024-06-27 23:31:31,578 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 85 predicate places. [2024-06-27 23:31:31,578 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 255 transitions, 3140 flow [2024-06-27 23:31:31,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 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 23:31:31,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:31:31,579 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:31:31,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 23:31:31,579 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:31:31,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:31:31,579 INFO L85 PathProgramCache]: Analyzing trace with hash 781271580, now seen corresponding path program 2 times [2024-06-27 23:31:31,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:31:31,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630277716] [2024-06-27 23:31:31,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:31:31,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:31:31,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:31:33,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:31:33,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:31:33,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630277716] [2024-06-27 23:31:33,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630277716] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:31:33,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:31:33,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:31:33,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105439905] [2024-06-27 23:31:33,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:31:33,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:31:33,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:31:33,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:31:33,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:31:33,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-27 23:31:33,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 255 transitions, 3140 flow. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 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 23:31:33,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:31:33,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-27 23:31:33,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:31:36,152 INFO L124 PetriNetUnfolderBase]: 13399/18838 cut-off events. [2024-06-27 23:31:36,152 INFO L125 PetriNetUnfolderBase]: For 418655/418785 co-relation queries the response was YES. [2024-06-27 23:31:36,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105907 conditions, 18838 events. 13399/18838 cut-off events. For 418655/418785 co-relation queries the response was YES. Maximal size of possible extension queue 590. Compared 106109 event pairs, 5563 based on Foata normal form. 22/18802 useless extension candidates. Maximal degree in co-relation 105841. Up to 17555 conditions per place. [2024-06-27 23:31:36,346 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 216 selfloop transitions, 69 changer transitions 0/295 dead transitions. [2024-06-27 23:31:36,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 295 transitions, 3878 flow [2024-06-27 23:31:36,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:31:36,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:31:36,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 200 transitions. [2024-06-27 23:31:36,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4716981132075472 [2024-06-27 23:31:36,348 INFO L175 Difference]: Start difference. First operand has 141 places, 255 transitions, 3140 flow. Second operand 8 states and 200 transitions. [2024-06-27 23:31:36,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 295 transitions, 3878 flow [2024-06-27 23:31:36,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 295 transitions, 3706 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-27 23:31:36,862 INFO L231 Difference]: Finished difference. Result has 144 places, 262 transitions, 3209 flow [2024-06-27 23:31:36,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2968, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3209, PETRI_PLACES=144, PETRI_TRANSITIONS=262} [2024-06-27 23:31:36,863 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 88 predicate places. [2024-06-27 23:31:36,863 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 262 transitions, 3209 flow [2024-06-27 23:31:36,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 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 23:31:36,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:31:36,863 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:31:36,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 23:31:36,864 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:31:36,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:31:36,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1155367639, now seen corresponding path program 1 times [2024-06-27 23:31:36,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:31:36,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672956850] [2024-06-27 23:31:36,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:31:36,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:31:36,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:31:38,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:31:38,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:31:38,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672956850] [2024-06-27 23:31:38,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672956850] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:31:38,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:31:38,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:31:38,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924656193] [2024-06-27 23:31:38,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:31:38,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:31:38,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:31:38,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:31:38,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:31:38,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-27 23:31:38,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 262 transitions, 3209 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:31:38,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:31:38,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-27 23:31:38,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:31:41,333 INFO L124 PetriNetUnfolderBase]: 12816/18246 cut-off events. [2024-06-27 23:31:41,333 INFO L125 PetriNetUnfolderBase]: For 447373/447519 co-relation queries the response was YES. [2024-06-27 23:31:41,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105318 conditions, 18246 events. 12816/18246 cut-off events. For 447373/447519 co-relation queries the response was YES. Maximal size of possible extension queue 590. Compared 105329 event pairs, 5539 based on Foata normal form. 18/18204 useless extension candidates. Maximal degree in co-relation 105250. Up to 17075 conditions per place. [2024-06-27 23:31:41,503 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 238 selfloop transitions, 25 changer transitions 0/289 dead transitions. [2024-06-27 23:31:41,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 289 transitions, 3890 flow [2024-06-27 23:31:41,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:31:41,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:31:41,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 157 transitions. [2024-06-27 23:31:41,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4937106918238994 [2024-06-27 23:31:41,504 INFO L175 Difference]: Start difference. First operand has 144 places, 262 transitions, 3209 flow. Second operand 6 states and 157 transitions. [2024-06-27 23:31:41,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 289 transitions, 3890 flow [2024-06-27 23:31:42,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 289 transitions, 3723 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-27 23:31:42,065 INFO L231 Difference]: Finished difference. Result has 146 places, 267 transitions, 3187 flow [2024-06-27 23:31:42,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=3044, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3187, PETRI_PLACES=146, PETRI_TRANSITIONS=267} [2024-06-27 23:31:42,066 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 90 predicate places. [2024-06-27 23:31:42,066 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 267 transitions, 3187 flow [2024-06-27 23:31:42,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:31:42,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:31:42,066 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:31:42,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 23:31:42,066 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:31:42,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:31:42,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1142987479, now seen corresponding path program 2 times [2024-06-27 23:31:42,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:31:42,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364629833] [2024-06-27 23:31:42,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:31:42,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:31:42,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:31:43,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:31:43,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:31:43,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364629833] [2024-06-27 23:31:43,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364629833] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:31:43,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:31:43,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:31:43,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59628727] [2024-06-27 23:31:43,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:31:43,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:31:43,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:31:43,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:31:43,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:31:43,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-27 23:31:43,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 267 transitions, 3187 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:31:43,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:31:43,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-27 23:31:43,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:31:46,713 INFO L124 PetriNetUnfolderBase]: 12832/18269 cut-off events. [2024-06-27 23:31:46,713 INFO L125 PetriNetUnfolderBase]: For 482024/482191 co-relation queries the response was YES. [2024-06-27 23:31:46,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108874 conditions, 18269 events. 12832/18269 cut-off events. For 482024/482191 co-relation queries the response was YES. Maximal size of possible extension queue 590. Compared 105337 event pairs, 5545 based on Foata normal form. 22/18229 useless extension candidates. Maximal degree in co-relation 108804. Up to 17067 conditions per place. [2024-06-27 23:31:46,867 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 234 selfloop transitions, 36 changer transitions 0/296 dead transitions. [2024-06-27 23:31:46,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 296 transitions, 4025 flow [2024-06-27 23:31:46,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:31:46,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:31:46,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-06-27 23:31:46,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4582210242587601 [2024-06-27 23:31:46,868 INFO L175 Difference]: Start difference. First operand has 146 places, 267 transitions, 3187 flow. Second operand 7 states and 170 transitions. [2024-06-27 23:31:46,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 296 transitions, 4025 flow [2024-06-27 23:31:47,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 296 transitions, 3892 flow, removed 26 selfloop flow, removed 2 redundant places. [2024-06-27 23:31:47,384 INFO L231 Difference]: Finished difference. Result has 151 places, 275 transitions, 3263 flow [2024-06-27 23:31:47,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=3054, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3263, PETRI_PLACES=151, PETRI_TRANSITIONS=275} [2024-06-27 23:31:47,385 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 95 predicate places. [2024-06-27 23:31:47,385 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 275 transitions, 3263 flow [2024-06-27 23:31:47,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:31:47,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:31:47,385 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:31:47,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 23:31:47,386 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:31:47,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:31:47,386 INFO L85 PathProgramCache]: Analyzing trace with hash 566561500, now seen corresponding path program 3 times [2024-06-27 23:31:47,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:31:47,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932712116] [2024-06-27 23:31:47,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:31:47,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:31:47,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:31:48,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:31:48,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:31:48,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932712116] [2024-06-27 23:31:48,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932712116] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:31:48,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:31:48,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:31:48,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851287402] [2024-06-27 23:31:48,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:31:48,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:31:48,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:31:48,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:31:48,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:31:49,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-27 23:31:49,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 275 transitions, 3263 flow. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 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 23:31:49,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:31:49,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-27 23:31:49,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:31:52,355 INFO L124 PetriNetUnfolderBase]: 13494/18963 cut-off events. [2024-06-27 23:31:52,356 INFO L125 PetriNetUnfolderBase]: For 532068/532219 co-relation queries the response was YES. [2024-06-27 23:31:52,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116379 conditions, 18963 events. 13494/18963 cut-off events. For 532068/532219 co-relation queries the response was YES. Maximal size of possible extension queue 590. Compared 106627 event pairs, 5542 based on Foata normal form. 12/18924 useless extension candidates. Maximal degree in co-relation 116307. Up to 17803 conditions per place. [2024-06-27 23:31:52,662 INFO L140 encePairwiseOnDemand]: 38/53 looper letters, 234 selfloop transitions, 76 changer transitions 0/320 dead transitions. [2024-06-27 23:31:52,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 320 transitions, 4081 flow [2024-06-27 23:31:52,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:31:52,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:31:52,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 210 transitions. [2024-06-27 23:31:52,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49528301886792453 [2024-06-27 23:31:52,663 INFO L175 Difference]: Start difference. First operand has 151 places, 275 transitions, 3263 flow. Second operand 8 states and 210 transitions. [2024-06-27 23:31:52,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 320 transitions, 4081 flow [2024-06-27 23:31:53,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 320 transitions, 4017 flow, removed 29 selfloop flow, removed 2 redundant places. [2024-06-27 23:31:53,233 INFO L231 Difference]: Finished difference. Result has 157 places, 281 transitions, 3455 flow [2024-06-27 23:31:53,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=3199, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3455, PETRI_PLACES=157, PETRI_TRANSITIONS=281} [2024-06-27 23:31:53,234 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 101 predicate places. [2024-06-27 23:31:53,234 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 281 transitions, 3455 flow [2024-06-27 23:31:53,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 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 23:31:53,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:31:53,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:31:53,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 23:31:53,235 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:31:53,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:31:53,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1190372748, now seen corresponding path program 4 times [2024-06-27 23:31:53,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:31:53,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886898212] [2024-06-27 23:31:53,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:31:53,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:31:53,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:31:54,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:31:54,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:31:54,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886898212] [2024-06-27 23:31:54,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886898212] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:31:54,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:31:54,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:31:54,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324612028] [2024-06-27 23:31:54,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:31:54,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:31:54,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:31:54,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:31:54,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:31:54,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-27 23:31:54,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 281 transitions, 3455 flow. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 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 23:31:54,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:31:54,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-27 23:31:54,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:31:58,032 INFO L124 PetriNetUnfolderBase]: 13687/19257 cut-off events. [2024-06-27 23:31:58,033 INFO L125 PetriNetUnfolderBase]: For 578488/578647 co-relation queries the response was YES. [2024-06-27 23:31:58,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121009 conditions, 19257 events. 13687/19257 cut-off events. For 578488/578647 co-relation queries the response was YES. Maximal size of possible extension queue 590. Compared 108577 event pairs, 5587 based on Foata normal form. 20/19226 useless extension candidates. Maximal degree in co-relation 120935. Up to 17861 conditions per place. [2024-06-27 23:31:58,233 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 243 selfloop transitions, 85 changer transitions 0/338 dead transitions. [2024-06-27 23:31:58,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 338 transitions, 4383 flow [2024-06-27 23:31:58,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:31:58,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:31:58,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 211 transitions. [2024-06-27 23:31:58,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49764150943396224 [2024-06-27 23:31:58,235 INFO L175 Difference]: Start difference. First operand has 157 places, 281 transitions, 3455 flow. Second operand 8 states and 211 transitions. [2024-06-27 23:31:58,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 338 transitions, 4383 flow [2024-06-27 23:31:58,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 338 transitions, 4212 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-27 23:31:58,868 INFO L231 Difference]: Finished difference. Result has 161 places, 297 transitions, 3670 flow [2024-06-27 23:31:58,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=3284, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3670, PETRI_PLACES=161, PETRI_TRANSITIONS=297} [2024-06-27 23:31:58,869 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 105 predicate places. [2024-06-27 23:31:58,869 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 297 transitions, 3670 flow [2024-06-27 23:31:58,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 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 23:31:58,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:31:58,870 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:31:58,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 23:31:58,870 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:31:58,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:31:58,870 INFO L85 PathProgramCache]: Analyzing trace with hash 601960578, now seen corresponding path program 5 times [2024-06-27 23:31:58,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:31:58,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872810669] [2024-06-27 23:31:58,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:31:58,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:31:58,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:31:59,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:31:59,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:31:59,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872810669] [2024-06-27 23:31:59,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872810669] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:31:59,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:31:59,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:31:59,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538153076] [2024-06-27 23:31:59,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:31:59,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:31:59,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:31:59,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:31:59,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:32:00,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 53 [2024-06-27 23:32:00,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 297 transitions, 3670 flow. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:00,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:32:00,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 53 [2024-06-27 23:32:00,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:32:02,907 INFO L124 PetriNetUnfolderBase]: 9392/14425 cut-off events. [2024-06-27 23:32:02,908 INFO L125 PetriNetUnfolderBase]: For 449227/449596 co-relation queries the response was YES. [2024-06-27 23:32:02,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92056 conditions, 14425 events. 9392/14425 cut-off events. For 449227/449596 co-relation queries the response was YES. Maximal size of possible extension queue 472. Compared 91464 event pairs, 3097 based on Foata normal form. 180/14476 useless extension candidates. Maximal degree in co-relation 91980. Up to 11631 conditions per place. [2024-06-27 23:32:03,075 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 166 selfloop transitions, 114 changer transitions 0/347 dead transitions. [2024-06-27 23:32:03,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 347 transitions, 4506 flow [2024-06-27 23:32:03,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:32:03,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:32:03,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 207 transitions. [2024-06-27 23:32:03,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5579514824797843 [2024-06-27 23:32:03,077 INFO L175 Difference]: Start difference. First operand has 161 places, 297 transitions, 3670 flow. Second operand 7 states and 207 transitions. [2024-06-27 23:32:03,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 347 transitions, 4506 flow [2024-06-27 23:32:03,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 347 transitions, 4314 flow, removed 27 selfloop flow, removed 5 redundant places. [2024-06-27 23:32:03,720 INFO L231 Difference]: Finished difference. Result has 165 places, 315 transitions, 4030 flow [2024-06-27 23:32:03,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=3478, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4030, PETRI_PLACES=165, PETRI_TRANSITIONS=315} [2024-06-27 23:32:03,720 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 109 predicate places. [2024-06-27 23:32:03,721 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 315 transitions, 4030 flow [2024-06-27 23:32:03,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:03,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:32:03,721 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:32:03,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 23:32:03,721 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:32:03,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:32:03,722 INFO L85 PathProgramCache]: Analyzing trace with hash -752430103, now seen corresponding path program 3 times [2024-06-27 23:32:03,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:32:03,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148930571] [2024-06-27 23:32:03,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:32:03,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:32:03,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:32:05,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:32:05,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:32:05,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148930571] [2024-06-27 23:32:05,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148930571] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:32:05,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:32:05,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:32:05,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967209199] [2024-06-27 23:32:05,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:32:05,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:32:05,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:32:05,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:32:05,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:32:05,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-27 23:32:05,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 315 transitions, 4030 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:05,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:32:05,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-27 23:32:05,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand