./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix008_tso.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix008_tso.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix008_tso.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix008_tso.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 23:14:50,171 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 23:14:50,232 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 23:14:50,236 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 23:14:50,237 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 23:14:50,258 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 23:14:50,259 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 23:14:50,259 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 23:14:50,260 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 23:14:50,263 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 23:14:50,263 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 23:14:50,263 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 23:14:50,264 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 23:14:50,265 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 23:14:50,265 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 23:14:50,265 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 23:14:50,266 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 23:14:50,266 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 23:14:50,266 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 23:14:50,266 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 23:14:50,266 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 23:14:50,267 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 23:14:50,267 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 23:14:50,267 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 23:14:50,267 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 23:14:50,268 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 23:14:50,268 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 23:14:50,268 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 23:14:50,269 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 23:14:50,269 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 23:14:50,270 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 23:14:50,270 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 23:14:50,270 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 23:14:50,270 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 23:14:50,270 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 23:14:50,271 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 23:14:50,271 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 23:14:50,271 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 23:14:50,271 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 23:14:50,271 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 23:14:50,272 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 23:14:50,272 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 23:14:50,272 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 23:14:50,272 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-27 23:14:50,440 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 23:14:50,460 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 23:14:50,462 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 23:14:50,463 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 23:14:50,463 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 23:14:50,464 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix008_tso.oepc.i [2024-06-27 23:14:51,448 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 23:14:51,659 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 23:14:51,660 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix008_tso.oepc.i [2024-06-27 23:14:51,672 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9223709b7/d6ff27d6a94349cab1508fc948430ba1/FLAG11562667b [2024-06-27 23:14:51,682 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9223709b7/d6ff27d6a94349cab1508fc948430ba1 [2024-06-27 23:14:51,684 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 23:14:51,685 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 23:14:51,685 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix008_tso.oepc.yml/witness.yml [2024-06-27 23:14:51,762 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 23:14:51,763 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 23:14:51,764 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 23:14:51,764 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 23:14:51,768 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 23:14:51,768 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 11:14:51" (1/2) ... [2024-06-27 23:14:51,769 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d62eba5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:14:51, skipping insertion in model container [2024-06-27 23:14:51,769 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 11:14:51" (1/2) ... [2024-06-27 23:14:51,772 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@92faae2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:14:51, skipping insertion in model container [2024-06-27 23:14:51,772 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:14:51" (2/2) ... [2024-06-27 23:14:51,772 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d62eba5 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:14:51, skipping insertion in model container [2024-06-27 23:14:51,773 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:14:51" (2/2) ... [2024-06-27 23:14:51,773 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 23:14:51,803 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 23:14:51,805 INFO L97 edCorrectnessWitness]: Location invariant before [L926-L926] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p2_EBX) + (long long )z$w_buff0 >= 0LL && (0LL - (long long )__unbuffered_p3_EAX) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p3_EBX) + (long long )a >= 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) && (0LL - (long long )z) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$mem_tmp) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd4) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd4) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd4) + (long long )z$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )main$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$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff1_used >= 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_p2_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_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) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p3_EBX) - (long long )a >= 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$w_buff1 - (long long )y$w_buff1_used >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff1 - (long long )z$w_buff1_used >= 0LL) [2024-06-27 23:14:51,805 INFO L97 edCorrectnessWitness]: Location invariant before [L928-L928] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p2_EBX) + (long long )z$w_buff0 >= 0LL && (0LL - (long long )__unbuffered_p3_EAX) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p3_EBX) + (long long )a >= 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) && (0LL - (long long )z) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$mem_tmp) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd4) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd4) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd4) + (long long )z$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )main$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$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff1_used >= 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_p2_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_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) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p3_EBX) - (long long )a >= 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$w_buff1 - (long long )y$w_buff1_used >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff1 - (long long )z$w_buff1_used >= 0LL) [2024-06-27 23:14:51,805 INFO L97 edCorrectnessWitness]: Location invariant before [L930-L930] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p2_EBX) + (long long )z$w_buff0 >= 0LL && (0LL - (long long )__unbuffered_p3_EAX) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p3_EBX) + (long long )a >= 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) && (0LL - (long long )z) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$mem_tmp) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd4) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd4) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd4) + (long long )z$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )main$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$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff1_used >= 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_p2_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_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) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p3_EBX) - (long long )a >= 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$w_buff1 - (long long )y$w_buff1_used >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff1 - (long long )z$w_buff1_used >= 0LL) [2024-06-27 23:14:51,805 INFO L97 edCorrectnessWitness]: Location invariant before [L931-L931] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p2_EBX) + (long long )z$w_buff0 >= 0LL && (0LL - (long long )__unbuffered_p3_EAX) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p3_EBX) + (long long )a >= 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) && (0LL - (long long )z) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$mem_tmp) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd4) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd4) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd4) + (long long )z$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )main$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$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff1_used >= 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_p2_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_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) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p3_EBX) - (long long )a >= 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$w_buff1 - (long long )y$w_buff1_used >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff1 - (long long )z$w_buff1_used >= 0LL) [2024-06-27 23:14:51,806 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 23:14:51,806 INFO L106 edCorrectnessWitness]: ghost_update [L924-L924] multithreaded = 1; [2024-06-27 23:14:51,844 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 23:14:52,257 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 23:14:52,266 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 23:14:52,451 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 23:14:52,489 INFO L206 MainTranslator]: Completed translation [2024-06-27 23:14:52,489 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:14:52 WrapperNode [2024-06-27 23:14:52,489 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 23:14:52,492 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 23:14:52,492 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 23:14:52,492 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 23:14:52,499 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 11:14:52" (1/1) ... [2024-06-27 23:14:52,530 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 11:14:52" (1/1) ... [2024-06-27 23:14:52,608 INFO L138 Inliner]: procedures = 176, calls = 57, calls flagged for inlining = 7, calls inlined = 9, statements flattened = 286 [2024-06-27 23:14:52,616 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 23:14:52,617 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 23:14:52,617 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 23:14:52,617 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 23:14:52,627 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 11:14:52" (1/1) ... [2024-06-27 23:14:52,628 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 11:14:52" (1/1) ... [2024-06-27 23:14:52,644 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 11:14:52" (1/1) ... [2024-06-27 23:14:52,687 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 23:14:52,695 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 11:14:52" (1/1) ... [2024-06-27 23:14:52,696 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 11:14:52" (1/1) ... [2024-06-27 23:14:52,732 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 11:14:52" (1/1) ... [2024-06-27 23:14:52,734 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 11:14:52" (1/1) ... [2024-06-27 23:14:52,737 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 11:14:52" (1/1) ... [2024-06-27 23:14:52,740 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 11:14:52" (1/1) ... [2024-06-27 23:14:52,745 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 23:14:52,746 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 23:14:52,746 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 23:14:52,746 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 23:14:52,747 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 11:14:52" (1/1) ... [2024-06-27 23:14:52,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 23:14:52,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 23:14:52,781 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 23:14:52,801 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 23:14:52,813 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 23:14:52,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 23:14:52,813 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 23:14:52,813 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 23:14:52,813 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 23:14:52,814 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 23:14:52,814 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 23:14:52,814 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 23:14:52,814 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-27 23:14:52,814 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-27 23:14:52,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 23:14:52,815 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 23:14:52,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 23:14:52,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 23:14:52,816 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 23:14:53,054 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 23:14:53,055 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 23:14:53,667 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 23:14:53,667 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 23:14:53,906 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 23:14:53,906 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 23:14:53,907 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 11:14:53 BoogieIcfgContainer [2024-06-27 23:14:53,907 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 23:14:53,909 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 23:14:53,909 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 23:14:53,911 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 23:14:53,912 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 11:14:51" (1/4) ... [2024-06-27 23:14:53,912 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46ac015f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 11:14:53, skipping insertion in model container [2024-06-27 23:14:53,913 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:14:51" (2/4) ... [2024-06-27 23:14:53,914 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46ac015f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 11:14:53, skipping insertion in model container [2024-06-27 23:14:53,914 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 11:14:52" (3/4) ... [2024-06-27 23:14:53,914 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46ac015f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 11:14:53, skipping insertion in model container [2024-06-27 23:14:53,915 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 11:14:53" (4/4) ... [2024-06-27 23:14:53,916 INFO L112 eAbstractionObserver]: Analyzing ICFG mix008_tso.oepc.i [2024-06-27 23:14:53,930 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 23:14:53,930 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-27 23:14:53,930 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 23:14:53,988 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 23:14:54,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 53 transitions, 122 flow [2024-06-27 23:14:54,059 INFO L124 PetriNetUnfolderBase]: 0/49 cut-off events. [2024-06-27 23:14:54,059 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 23:14:54,062 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 4. Compared 87 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 23:14:54,062 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 53 transitions, 122 flow [2024-06-27 23:14:54,066 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 43 transitions, 98 flow [2024-06-27 23:14:54,077 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 23:14:54,083 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;@53ecd1e2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 23:14:54,084 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-27 23:14:54,088 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 23:14:54,088 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 23:14:54,088 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 23:14:54,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:14:54,089 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 23:14:54,089 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 23:14:54,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:14:54,095 INFO L85 PathProgramCache]: Analyzing trace with hash 613012031, now seen corresponding path program 1 times [2024-06-27 23:14:54,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:14:54,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424239076] [2024-06-27 23:14:54,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:14:54,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:14:54,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:14:56,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:14:56,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:14:56,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424239076] [2024-06-27 23:14:56,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424239076] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:14:56,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:14:56,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 23:14:56,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802787865] [2024-06-27 23:14:56,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:14:56,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 23:14:56,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:14:56,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 23:14:56,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 23:14:56,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-27 23:14:56,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 43 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states 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 23:14:56,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:14:56,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-27 23:14:56,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:14:59,172 INFO L124 PetriNetUnfolderBase]: 13599/18732 cut-off events. [2024-06-27 23:14:59,173 INFO L125 PetriNetUnfolderBase]: For 243/243 co-relation queries the response was YES. [2024-06-27 23:14:59,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37586 conditions, 18732 events. 13599/18732 cut-off events. For 243/243 co-relation queries the response was YES. Maximal size of possible extension queue 642. Compared 103397 event pairs, 10515 based on Foata normal form. 1/18248 useless extension candidates. Maximal degree in co-relation 37573. Up to 18345 conditions per place. [2024-06-27 23:14:59,282 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 45 selfloop transitions, 5 changer transitions 0/57 dead transitions. [2024-06-27 23:14:59,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 57 transitions, 235 flow [2024-06-27 23:14:59,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 23:14:59,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 23:14:59,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2024-06-27 23:14:59,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5849056603773585 [2024-06-27 23:14:59,293 INFO L175 Difference]: Start difference. First operand has 56 places, 43 transitions, 98 flow. Second operand 3 states and 93 transitions. [2024-06-27 23:14:59,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 57 transitions, 235 flow [2024-06-27 23:14:59,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 57 transitions, 228 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-27 23:14:59,301 INFO L231 Difference]: Finished difference. Result has 55 places, 47 transitions, 133 flow [2024-06-27 23:14:59,302 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 23:14:59,305 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -1 predicate places. [2024-06-27 23:14:59,305 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 47 transitions, 133 flow [2024-06-27 23:14:59,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states 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 23:14:59,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:14:59,306 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:14:59,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 23:14:59,307 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 23:14:59,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:14:59,307 INFO L85 PathProgramCache]: Analyzing trace with hash 694086558, now seen corresponding path program 1 times [2024-06-27 23:14:59,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:14:59,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022030174] [2024-06-27 23:14:59,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:14:59,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:14:59,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:15:01,097 INFO 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 23:15:01,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:15:01,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022030174] [2024-06-27 23:15:01,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022030174] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:15:01,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:15:01,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 23:15:01,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700847004] [2024-06-27 23:15:01,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:15:01,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 23:15:01,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:15:01,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 23:15:01,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 23:15:01,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-27 23:15:01,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 47 transitions, 133 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:15:01,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:15:01,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-27 23:15:01,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:15:04,258 INFO L124 PetriNetUnfolderBase]: 15578/20977 cut-off events. [2024-06-27 23:15:04,259 INFO L125 PetriNetUnfolderBase]: For 3977/3977 co-relation queries the response was YES. [2024-06-27 23:15:04,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47505 conditions, 20977 events. 15578/20977 cut-off events. For 3977/3977 co-relation queries the response was YES. Maximal size of possible extension queue 696. Compared 111485 event pairs, 10885 based on Foata normal form. 4/20979 useless extension candidates. Maximal degree in co-relation 47493. Up to 20929 conditions per place. [2024-06-27 23:15:04,348 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 56 selfloop transitions, 9 changer transitions 0/71 dead transitions. [2024-06-27 23:15:04,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 71 transitions, 329 flow [2024-06-27 23:15:04,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 23:15:04,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 23:15:04,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 117 transitions. [2024-06-27 23:15:04,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5518867924528302 [2024-06-27 23:15:04,350 INFO L175 Difference]: Start difference. First operand has 55 places, 47 transitions, 133 flow. Second operand 4 states and 117 transitions. [2024-06-27 23:15:04,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 71 transitions, 329 flow [2024-06-27 23:15:04,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 71 transitions, 324 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 23:15:04,353 INFO L231 Difference]: Finished difference. Result has 58 places, 51 transitions, 181 flow [2024-06-27 23:15:04,353 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 23:15:04,354 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 2 predicate places. [2024-06-27 23:15:04,354 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 181 flow [2024-06-27 23:15:04,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:15:04,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:15:04,355 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:15:04,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 23:15:04,355 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 23:15:04,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:15:04,356 INFO L85 PathProgramCache]: Analyzing trace with hash 41848264, now seen corresponding path program 1 times [2024-06-27 23:15:04,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:15:04,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963419524] [2024-06-27 23:15:04,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:15:04,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:15:04,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:15:06,097 INFO 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 23:15:06,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:15:06,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963419524] [2024-06-27 23:15:06,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963419524] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:15:06,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:15:06,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 23:15:06,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247479645] [2024-06-27 23:15:06,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:15:06,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 23:15:06,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:15:06,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 23:15:06,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 23:15:06,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-27 23:15:06,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 51 transitions, 181 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:15:06,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:15:06,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-27 23:15:06,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:15:09,399 INFO L124 PetriNetUnfolderBase]: 15596/21015 cut-off events. [2024-06-27 23:15:09,399 INFO L125 PetriNetUnfolderBase]: For 11411/11411 co-relation queries the response was YES. [2024-06-27 23:15:09,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52629 conditions, 21015 events. 15596/21015 cut-off events. For 11411/11411 co-relation queries the response was YES. Maximal size of possible extension queue 696. Compared 111875 event pairs, 8781 based on Foata normal form. 7/21020 useless extension candidates. Maximal degree in co-relation 52615. Up to 20850 conditions per place. [2024-06-27 23:15:09,491 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 74 selfloop transitions, 21 changer transitions 0/101 dead transitions. [2024-06-27 23:15:09,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 101 transitions, 545 flow [2024-06-27 23:15:09,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 23:15:09,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 23:15:09,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 153 transitions. [2024-06-27 23:15:09,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5773584905660377 [2024-06-27 23:15:09,493 INFO L175 Difference]: Start difference. First operand has 58 places, 51 transitions, 181 flow. Second operand 5 states and 153 transitions. [2024-06-27 23:15:09,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 101 transitions, 545 flow [2024-06-27 23:15:09,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 101 transitions, 526 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-27 23:15:09,497 INFO L231 Difference]: Finished difference. Result has 63 places, 65 transitions, 312 flow [2024-06-27 23:15:09,497 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 23:15:09,497 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 7 predicate places. [2024-06-27 23:15:09,498 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 65 transitions, 312 flow [2024-06-27 23:15:09,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:15:09,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:15:09,498 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:15:09,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 23:15:09,498 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 23:15:09,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:15:09,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1020452069, now seen corresponding path program 1 times [2024-06-27 23:15:09,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:15:09,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097976708] [2024-06-27 23:15:09,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:15:09,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:15:09,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:15:11,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:15:11,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:15:11,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097976708] [2024-06-27 23:15:11,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097976708] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:15:11,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:15:11,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:15:11,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274391540] [2024-06-27 23:15:11,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:15:11,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:15:11,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:15:11,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:15:11,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:15:11,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-27 23:15:11,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 65 transitions, 312 flow. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:15:11,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:15:11,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-27 23:15:11,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:15:14,538 INFO L124 PetriNetUnfolderBase]: 15625/21058 cut-off events. [2024-06-27 23:15:14,538 INFO L125 PetriNetUnfolderBase]: For 27158/27162 co-relation queries the response was YES. [2024-06-27 23:15:14,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60975 conditions, 21058 events. 15625/21058 cut-off events. For 27158/27162 co-relation queries the response was YES. Maximal size of possible extension queue 696. Compared 112403 event pairs, 7330 based on Foata normal form. 18/21074 useless extension candidates. Maximal degree in co-relation 60958. Up to 20815 conditions per place. [2024-06-27 23:15:14,639 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 81 selfloop transitions, 25 changer transitions 0/112 dead transitions. [2024-06-27 23:15:14,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 112 transitions, 690 flow [2024-06-27 23:15:14,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:15:14,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:15:14,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 176 transitions. [2024-06-27 23:15:14,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5534591194968553 [2024-06-27 23:15:14,642 INFO L175 Difference]: Start difference. First operand has 63 places, 65 transitions, 312 flow. Second operand 6 states and 176 transitions. [2024-06-27 23:15:14,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 112 transitions, 690 flow [2024-06-27 23:15:14,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 112 transitions, 678 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-06-27 23:15:14,650 INFO L231 Difference]: Finished difference. Result has 68 places, 68 transitions, 389 flow [2024-06-27 23:15:14,650 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 23:15:14,651 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 12 predicate places. [2024-06-27 23:15:14,651 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 68 transitions, 389 flow [2024-06-27 23:15:14,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:15:14,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:15:14,651 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:15:14,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 23:15:14,652 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 23:15:14,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:15:14,652 INFO L85 PathProgramCache]: Analyzing trace with hash 898557513, now seen corresponding path program 1 times [2024-06-27 23:15:14,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:15:14,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173872297] [2024-06-27 23:15:14,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:15:14,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:15:14,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:15:16,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:15:16,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:15:16,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173872297] [2024-06-27 23:15:16,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173872297] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:15:16,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:15:16,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 23:15:16,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757625142] [2024-06-27 23:15:16,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:15:16,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 23:15:16,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:15:16,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 23:15:16,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 23:15:16,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2024-06-27 23:15:16,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 68 transitions, 389 flow. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:15:16,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:15:16,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2024-06-27 23:15:16,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:15:19,811 INFO L124 PetriNetUnfolderBase]: 13627/18797 cut-off events. [2024-06-27 23:15:19,811 INFO L125 PetriNetUnfolderBase]: For 35019/35019 co-relation queries the response was YES. [2024-06-27 23:15:19,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58560 conditions, 18797 events. 13627/18797 cut-off events. For 35019/35019 co-relation queries the response was YES. Maximal size of possible extension queue 644. Compared 104364 event pairs, 7453 based on Foata normal form. 3/18568 useless extension candidates. Maximal degree in co-relation 58539. Up to 18372 conditions per place. [2024-06-27 23:15:19,914 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 68 selfloop transitions, 12 changer transitions 0/86 dead transitions. [2024-06-27 23:15:19,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 86 transitions, 605 flow [2024-06-27 23:15:19,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 23:15:19,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 23:15:19,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 120 transitions. [2024-06-27 23:15:19,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4528301886792453 [2024-06-27 23:15:19,919 INFO L175 Difference]: Start difference. First operand has 68 places, 68 transitions, 389 flow. Second operand 5 states and 120 transitions. [2024-06-27 23:15:19,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 86 transitions, 605 flow [2024-06-27 23:15:19,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 86 transitions, 534 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-27 23:15:19,929 INFO L231 Difference]: Finished difference. Result has 70 places, 70 transitions, 374 flow [2024-06-27 23:15:19,929 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 23:15:19,934 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 14 predicate places. [2024-06-27 23:15:19,934 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 70 transitions, 374 flow [2024-06-27 23:15:19,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:15:19,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:15:19,935 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:15:19,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 23:15:19,935 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 23:15:19,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:15:19,935 INFO L85 PathProgramCache]: Analyzing trace with hash 2060542119, now seen corresponding path program 1 times [2024-06-27 23:15:19,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:15:19,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728866697] [2024-06-27 23:15:19,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:15:19,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:15:19,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:15:22,497 INFO 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 23:15:22,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:15:22,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728866697] [2024-06-27 23:15:22,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728866697] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:15:22,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:15:22,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:15:22,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665824895] [2024-06-27 23:15:22,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:15:22,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:15:22,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:15:22,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:15:22,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:15:22,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2024-06-27 23:15:22,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 70 transitions, 374 flow. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:15:22,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:15:22,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2024-06-27 23:15:22,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:15:25,740 INFO L124 PetriNetUnfolderBase]: 13609/18763 cut-off events. [2024-06-27 23:15:25,741 INFO L125 PetriNetUnfolderBase]: For 41018/41018 co-relation queries the response was YES. [2024-06-27 23:15:25,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59592 conditions, 18763 events. 13609/18763 cut-off events. For 41018/41018 co-relation queries the response was YES. Maximal size of possible extension queue 642. Compared 103836 event pairs, 7129 based on Foata normal form. 6/18529 useless extension candidates. Maximal degree in co-relation 59567. Up to 18318 conditions per place. [2024-06-27 23:15:25,819 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 76 selfloop transitions, 16 changer transitions 0/98 dead transitions. [2024-06-27 23:15:25,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 98 transitions, 648 flow [2024-06-27 23:15:25,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:15:25,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:15:25,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 143 transitions. [2024-06-27 23:15:25,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.449685534591195 [2024-06-27 23:15:25,824 INFO L175 Difference]: Start difference. First operand has 70 places, 70 transitions, 374 flow. Second operand 6 states and 143 transitions. [2024-06-27 23:15:25,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 98 transitions, 648 flow [2024-06-27 23:15:25,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 98 transitions, 624 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 23:15:25,849 INFO L231 Difference]: Finished difference. Result has 73 places, 74 transitions, 431 flow [2024-06-27 23:15:25,849 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 23:15:25,850 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 17 predicate places. [2024-06-27 23:15:25,850 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 74 transitions, 431 flow [2024-06-27 23:15:25,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:15:25,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:15:25,850 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:15:25,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 23:15:25,851 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 23:15:25,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:15:25,851 INFO L85 PathProgramCache]: Analyzing trace with hash -553424634, now seen corresponding path program 1 times [2024-06-27 23:15:25,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:15:25,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093515583] [2024-06-27 23:15:25,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:15:25,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:15:25,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:15:28,368 INFO 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 23:15:28,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:15:28,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093515583] [2024-06-27 23:15:28,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093515583] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:15:28,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:15:28,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:15:28,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299460980] [2024-06-27 23:15:28,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:15:28,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:15:28,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:15:28,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:15:28,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:15:28,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 53 [2024-06-27 23:15:28,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 74 transitions, 431 flow. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:15:28,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:15:28,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 53 [2024-06-27 23:15:28,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:15:32,378 INFO L124 PetriNetUnfolderBase]: 15747/21246 cut-off events. [2024-06-27 23:15:32,379 INFO L125 PetriNetUnfolderBase]: For 65291/65299 co-relation queries the response was YES. [2024-06-27 23:15:32,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72993 conditions, 21246 events. 15747/21246 cut-off events. For 65291/65299 co-relation queries the response was YES. Maximal size of possible extension queue 680. Compared 112402 event pairs, 8826 based on Foata normal form. 14/21256 useless extension candidates. Maximal degree in co-relation 72966. Up to 20977 conditions per place. [2024-06-27 23:15:32,519 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 82 selfloop transitions, 38 changer transitions 0/125 dead transitions. [2024-06-27 23:15:32,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 125 transitions, 959 flow [2024-06-27 23:15:32,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:15:32,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:15:32,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 152 transitions. [2024-06-27 23:15:32,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4779874213836478 [2024-06-27 23:15:32,521 INFO L175 Difference]: Start difference. First operand has 73 places, 74 transitions, 431 flow. Second operand 6 states and 152 transitions. [2024-06-27 23:15:32,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 125 transitions, 959 flow [2024-06-27 23:15:32,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 125 transitions, 918 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-27 23:15:32,546 INFO L231 Difference]: Finished difference. Result has 77 places, 92 transitions, 623 flow [2024-06-27 23:15:32,546 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 23:15:32,547 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 21 predicate places. [2024-06-27 23:15:32,547 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 92 transitions, 623 flow [2024-06-27 23:15:32,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:15:32,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:15:32,547 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:15:32,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 23:15:32,548 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 23:15:32,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:15:32,548 INFO L85 PathProgramCache]: Analyzing trace with hash 225971166, now seen corresponding path program 2 times [2024-06-27 23:15:32,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:15:32,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009291675] [2024-06-27 23:15:32,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:15:32,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:15:32,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:15:35,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:15:35,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:15:35,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009291675] [2024-06-27 23:15:35,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009291675] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:15:35,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:15:35,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:15:35,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371486073] [2024-06-27 23:15:35,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:15:35,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:15:35,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:15:35,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:15:35,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:15:35,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 53 [2024-06-27 23:15:35,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 92 transitions, 623 flow. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:15:35,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:15:35,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 53 [2024-06-27 23:15:35,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:15:38,293 INFO L124 PetriNetUnfolderBase]: 15732/21207 cut-off events. [2024-06-27 23:15:38,295 INFO L125 PetriNetUnfolderBase]: For 76598/76600 co-relation queries the response was YES. [2024-06-27 23:15:38,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74874 conditions, 21207 events. 15732/21207 cut-off events. For 76598/76600 co-relation queries the response was YES. Maximal size of possible extension queue 680. Compared 111877 event pairs, 8828 based on Foata normal form. 5/21205 useless extension candidates. Maximal degree in co-relation 74843. Up to 20962 conditions per place. [2024-06-27 23:15:38,445 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 73 selfloop transitions, 42 changer transitions 0/120 dead transitions. [2024-06-27 23:15:38,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 120 transitions, 979 flow [2024-06-27 23:15:38,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:15:38,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:15:38,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 147 transitions. [2024-06-27 23:15:38,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46226415094339623 [2024-06-27 23:15:38,446 INFO L175 Difference]: Start difference. First operand has 77 places, 92 transitions, 623 flow. Second operand 6 states and 147 transitions. [2024-06-27 23:15:38,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 120 transitions, 979 flow [2024-06-27 23:15:38,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 120 transitions, 937 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-06-27 23:15:38,470 INFO L231 Difference]: Finished difference. Result has 82 places, 93 transitions, 688 flow [2024-06-27 23:15:38,471 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 23:15:38,471 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 26 predicate places. [2024-06-27 23:15:38,471 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 93 transitions, 688 flow [2024-06-27 23:15:38,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:15:38,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:15:38,472 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:15:38,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 23:15:38,472 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 23:15:38,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:15:38,473 INFO L85 PathProgramCache]: Analyzing trace with hash 293665030, now seen corresponding path program 3 times [2024-06-27 23:15:38,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:15:38,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078655744] [2024-06-27 23:15:38,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:15:38,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:15:38,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:15:40,310 INFO 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 23:15:40,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:15:40,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078655744] [2024-06-27 23:15:40,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078655744] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:15:40,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:15:40,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:15:40,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133740816] [2024-06-27 23:15:40,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:15:40,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:15:40,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:15:40,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:15:40,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:15:40,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 53 [2024-06-27 23:15:40,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 93 transitions, 688 flow. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:15:40,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:15:40,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 53 [2024-06-27 23:15:40,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:15:43,690 INFO L124 PetriNetUnfolderBase]: 15843/21368 cut-off events. [2024-06-27 23:15:43,690 INFO L125 PetriNetUnfolderBase]: For 90438/90448 co-relation queries the response was YES. [2024-06-27 23:15:43,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77508 conditions, 21368 events. 15843/21368 cut-off events. For 90438/90448 co-relation queries the response was YES. Maximal size of possible extension queue 696. Compared 112921 event pairs, 8810 based on Foata normal form. 16/21382 useless extension candidates. Maximal degree in co-relation 77473. Up to 21039 conditions per place. [2024-06-27 23:15:43,843 INFO L140 encePairwiseOnDemand]: 38/53 looper letters, 84 selfloop transitions, 60 changer transitions 0/149 dead transitions. [2024-06-27 23:15:43,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 149 transitions, 1305 flow [2024-06-27 23:15:43,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:15:43,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:15:43,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-27 23:15:43,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4501347708894879 [2024-06-27 23:15:43,846 INFO L175 Difference]: Start difference. First operand has 82 places, 93 transitions, 688 flow. Second operand 7 states and 167 transitions. [2024-06-27 23:15:43,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 149 transitions, 1305 flow [2024-06-27 23:15:43,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 149 transitions, 1220 flow, removed 17 selfloop flow, removed 2 redundant places. [2024-06-27 23:15:43,905 INFO L231 Difference]: Finished difference. Result has 89 places, 115 transitions, 1015 flow [2024-06-27 23:15:43,905 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 23:15:43,906 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 33 predicate places. [2024-06-27 23:15:43,906 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 115 transitions, 1015 flow [2024-06-27 23:15:43,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:15:43,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:15:43,906 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:15:43,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 23:15:43,907 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 23:15:43,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:15:43,907 INFO L85 PathProgramCache]: Analyzing trace with hash 23706472, now seen corresponding path program 1 times [2024-06-27 23:15:43,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:15:43,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457782769] [2024-06-27 23:15:43,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:15:43,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:15:43,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:15:47,022 INFO 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 23:15:47,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:15:47,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457782769] [2024-06-27 23:15:47,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457782769] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:15:47,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:15:47,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:15:47,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293088095] [2024-06-27 23:15:47,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:15:47,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:15:47,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:15:47,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:15:47,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:15:47,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 53 [2024-06-27 23:15:47,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 115 transitions, 1015 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:15:47,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:15:47,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 53 [2024-06-27 23:15:47,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:15:50,761 INFO L124 PetriNetUnfolderBase]: 16055/21685 cut-off events. [2024-06-27 23:15:50,761 INFO L125 PetriNetUnfolderBase]: For 108818/108826 co-relation queries the response was YES. [2024-06-27 23:15:50,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81055 conditions, 21685 events. 16055/21685 cut-off events. For 108818/108826 co-relation queries the response was YES. Maximal size of possible extension queue 680. Compared 114812 event pairs, 6889 based on Foata normal form. 17/21698 useless extension candidates. Maximal degree in co-relation 81016. Up to 20961 conditions per place. [2024-06-27 23:15:50,930 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 100 selfloop transitions, 68 changer transitions 0/173 dead transitions. [2024-06-27 23:15:50,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 173 transitions, 1713 flow [2024-06-27 23:15:50,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:15:50,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:15:50,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 179 transitions. [2024-06-27 23:15:50,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48247978436657685 [2024-06-27 23:15:50,931 INFO L175 Difference]: Start difference. First operand has 89 places, 115 transitions, 1015 flow. Second operand 7 states and 179 transitions. [2024-06-27 23:15:50,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 173 transitions, 1713 flow [2024-06-27 23:15:51,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 173 transitions, 1650 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-27 23:15:51,007 INFO L231 Difference]: Finished difference. Result has 92 places, 128 transitions, 1216 flow [2024-06-27 23:15:51,007 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 23:15:51,008 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 36 predicate places. [2024-06-27 23:15:51,008 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 128 transitions, 1216 flow [2024-06-27 23:15:51,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:15:51,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:15:51,008 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:15:51,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 23:15:51,009 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 23:15:51,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:15:51,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1603595834, now seen corresponding path program 2 times [2024-06-27 23:15:51,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:15:51,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333209687] [2024-06-27 23:15:51,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:15:51,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:15:51,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:15:53,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:15:53,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:15:53,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333209687] [2024-06-27 23:15:53,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333209687] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:15:53,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:15:53,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:15:53,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396448728] [2024-06-27 23:15:53,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:15:53,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:15:53,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:15:53,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:15:53,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:15:54,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 53 [2024-06-27 23:15:54,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 128 transitions, 1216 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:15:54,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:15:54,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 53 [2024-06-27 23:15:54,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:15:58,056 INFO L124 PetriNetUnfolderBase]: 16161/21813 cut-off events. [2024-06-27 23:15:58,057 INFO L125 PetriNetUnfolderBase]: For 138271/138273 co-relation queries the response was YES. [2024-06-27 23:15:58,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88005 conditions, 21813 events. 16161/21813 cut-off events. For 138271/138273 co-relation queries the response was YES. Maximal size of possible extension queue 680. Compared 115163 event pairs, 6868 based on Foata normal form. 8/21811 useless extension candidates. Maximal degree in co-relation 87965. Up to 21036 conditions per place. [2024-06-27 23:15:58,182 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 100 selfloop transitions, 84 changer transitions 0/189 dead transitions. [2024-06-27 23:15:58,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 189 transitions, 2048 flow [2024-06-27 23:15:58,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:15:58,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:15:58,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 181 transitions. [2024-06-27 23:15:58,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48787061994609165 [2024-06-27 23:15:58,184 INFO L175 Difference]: Start difference. First operand has 92 places, 128 transitions, 1216 flow. Second operand 7 states and 181 transitions. [2024-06-27 23:15:58,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 189 transitions, 2048 flow [2024-06-27 23:15:58,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 189 transitions, 1982 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-27 23:15:58,252 INFO L231 Difference]: Finished difference. Result has 96 places, 141 transitions, 1466 flow [2024-06-27 23:15:58,252 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 23:15:58,253 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 40 predicate places. [2024-06-27 23:15:58,253 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 141 transitions, 1466 flow [2024-06-27 23:15:58,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:15:58,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:15:58,254 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:15:58,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 23:15:58,254 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 23:15:58,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:15:58,254 INFO L85 PathProgramCache]: Analyzing trace with hash 201075142, now seen corresponding path program 3 times [2024-06-27 23:15:58,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:15:58,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700652894] [2024-06-27 23:15:58,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:15:58,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:15:58,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:01,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:01,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:01,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700652894] [2024-06-27 23:16:01,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700652894] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:01,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:01,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:16:01,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525765075] [2024-06-27 23:16:01,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:01,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:16:01,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:01,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:16:01,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:16:01,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 53 [2024-06-27 23:16:01,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 141 transitions, 1466 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:01,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:01,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 53 [2024-06-27 23:16:01,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:05,192 INFO L124 PetriNetUnfolderBase]: 16143/21785 cut-off events. [2024-06-27 23:16:05,193 INFO L125 PetriNetUnfolderBase]: For 161603/161605 co-relation queries the response was YES. [2024-06-27 23:16:05,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91172 conditions, 21785 events. 16143/21785 cut-off events. For 161603/161605 co-relation queries the response was YES. Maximal size of possible extension queue 680. Compared 114968 event pairs, 6868 based on Foata normal form. 8/21783 useless extension candidates. Maximal degree in co-relation 91129. Up to 21027 conditions per place. [2024-06-27 23:16:05,347 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 90 selfloop transitions, 88 changer transitions 0/183 dead transitions. [2024-06-27 23:16:05,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 183 transitions, 2086 flow [2024-06-27 23:16:05,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:16:05,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:16:05,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2024-06-27 23:16:05,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.477088948787062 [2024-06-27 23:16:05,350 INFO L175 Difference]: Start difference. First operand has 96 places, 141 transitions, 1466 flow. Second operand 7 states and 177 transitions. [2024-06-27 23:16:05,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 183 transitions, 2086 flow [2024-06-27 23:16:05,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 183 transitions, 2044 flow, removed 19 selfloop flow, removed 1 redundant places. [2024-06-27 23:16:05,484 INFO L231 Difference]: Finished difference. Result has 102 places, 141 transitions, 1613 flow [2024-06-27 23:16:05,484 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 23:16:05,486 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 46 predicate places. [2024-06-27 23:16:05,486 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 141 transitions, 1613 flow [2024-06-27 23:16:05,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:05,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:05,487 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:16:05,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 23:16:05,487 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 23:16:05,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:05,487 INFO L85 PathProgramCache]: Analyzing trace with hash 513682280, now seen corresponding path program 4 times [2024-06-27 23:16:05,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:05,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073379777] [2024-06-27 23:16:05,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:05,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:05,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:07,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:07,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:07,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073379777] [2024-06-27 23:16:07,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073379777] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:07,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:07,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:16:07,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242741718] [2024-06-27 23:16:07,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:07,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:16:07,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:07,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:16:07,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:16:07,926 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 53 [2024-06-27 23:16:07,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 141 transitions, 1613 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:07,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:07,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 53 [2024-06-27 23:16:07,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:11,978 INFO L124 PetriNetUnfolderBase]: 16373/22106 cut-off events. [2024-06-27 23:16:11,979 INFO L125 PetriNetUnfolderBase]: For 182191/182201 co-relation queries the response was YES. [2024-06-27 23:16:12,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94235 conditions, 22106 events. 16373/22106 cut-off events. For 182191/182201 co-relation queries the response was YES. Maximal size of possible extension queue 696. Compared 117035 event pairs, 6875 based on Foata normal form. 19/22123 useless extension candidates. Maximal degree in co-relation 94188. Up to 21191 conditions per place. [2024-06-27 23:16:12,131 INFO L140 encePairwiseOnDemand]: 37/53 looper letters, 111 selfloop transitions, 100 changer transitions 0/216 dead transitions. [2024-06-27 23:16:12,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 216 transitions, 2632 flow [2024-06-27 23:16:12,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:16:12,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:16:12,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 202 transitions. [2024-06-27 23:16:12,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47641509433962265 [2024-06-27 23:16:12,134 INFO L175 Difference]: Start difference. First operand has 102 places, 141 transitions, 1613 flow. Second operand 8 states and 202 transitions. [2024-06-27 23:16:12,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 216 transitions, 2632 flow [2024-06-27 23:16:12,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 216 transitions, 2370 flow, removed 42 selfloop flow, removed 4 redundant places. [2024-06-27 23:16:12,295 INFO L231 Difference]: Finished difference. Result has 107 places, 162 transitions, 1868 flow [2024-06-27 23:16:12,295 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 23:16:12,296 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 51 predicate places. [2024-06-27 23:16:12,296 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 162 transitions, 1868 flow [2024-06-27 23:16:12,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:12,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:12,296 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:16:12,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 23:16:12,297 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:16:12,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:12,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1603349756, now seen corresponding path program 1 times [2024-06-27 23:16:12,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:12,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198809810] [2024-06-27 23:16:12,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:12,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:12,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:16,522 INFO 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 23:16:16,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:16,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198809810] [2024-06-27 23:16:16,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198809810] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:16,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:16,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:16:16,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544076833] [2024-06-27 23:16:16,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:16,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:16:16,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:16,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:16:16,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:16:16,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2024-06-27 23:16:16,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 162 transitions, 1868 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:16,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:16,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2024-06-27 23:16:16,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:20,335 INFO L124 PetriNetUnfolderBase]: 14369/19701 cut-off events. [2024-06-27 23:16:20,335 INFO L125 PetriNetUnfolderBase]: For 178547/178549 co-relation queries the response was YES. [2024-06-27 23:16:20,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85567 conditions, 19701 events. 14369/19701 cut-off events. For 178547/178549 co-relation queries the response was YES. Maximal size of possible extension queue 630. Compared 107257 event pairs, 6411 based on Foata normal form. 6/19563 useless extension candidates. Maximal degree in co-relation 85518. Up to 19309 conditions per place. [2024-06-27 23:16:20,491 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 172 selfloop transitions, 19 changer transitions 0/197 dead transitions. [2024-06-27 23:16:20,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 197 transitions, 2400 flow [2024-06-27 23:16:20,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:16:20,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:16:20,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 176 transitions. [2024-06-27 23:16:20,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41509433962264153 [2024-06-27 23:16:20,493 INFO L175 Difference]: Start difference. First operand has 107 places, 162 transitions, 1868 flow. Second operand 8 states and 176 transitions. [2024-06-27 23:16:20,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 197 transitions, 2400 flow [2024-06-27 23:16:20,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 197 transitions, 2272 flow, removed 16 selfloop flow, removed 3 redundant places. [2024-06-27 23:16:20,676 INFO L231 Difference]: Finished difference. Result has 112 places, 165 transitions, 1846 flow [2024-06-27 23:16:20,676 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=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1846, PETRI_PLACES=112, PETRI_TRANSITIONS=165} [2024-06-27 23:16:20,677 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 56 predicate places. [2024-06-27 23:16:20,677 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 165 transitions, 1846 flow [2024-06-27 23:16:20,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:20,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:20,678 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:16:20,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 23:16:20,682 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:16:20,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:20,683 INFO L85 PathProgramCache]: Analyzing trace with hash 24799281, now seen corresponding path program 1 times [2024-06-27 23:16:20,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:20,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918426229] [2024-06-27 23:16:20,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:20,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:20,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:22,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:22,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:22,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918426229] [2024-06-27 23:16:22,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918426229] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:22,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:22,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 23:16:22,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098884553] [2024-06-27 23:16:22,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:22,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 23:16:22,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:22,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 23:16:22,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 23:16:22,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2024-06-27 23:16:22,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 165 transitions, 1846 flow. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:22,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:22,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2024-06-27 23:16:22,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:25,804 INFO L124 PetriNetUnfolderBase]: 14362/19838 cut-off events. [2024-06-27 23:16:25,805 INFO L125 PetriNetUnfolderBase]: For 198778/198780 co-relation queries the response was YES. [2024-06-27 23:16:25,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88187 conditions, 19838 events. 14362/19838 cut-off events. For 198778/198780 co-relation queries the response was YES. Maximal size of possible extension queue 642. Compared 108947 event pairs, 6693 based on Foata normal form. 2/19598 useless extension candidates. Maximal degree in co-relation 88136. Up to 19366 conditions per place. [2024-06-27 23:16:25,997 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 164 selfloop transitions, 12 changer transitions 0/182 dead transitions. [2024-06-27 23:16:25,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 182 transitions, 2276 flow [2024-06-27 23:16:25,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:16:25,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:16:25,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 127 transitions. [2024-06-27 23:16:25,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39937106918238996 [2024-06-27 23:16:25,998 INFO L175 Difference]: Start difference. First operand has 112 places, 165 transitions, 1846 flow. Second operand 6 states and 127 transitions. [2024-06-27 23:16:25,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 182 transitions, 2276 flow [2024-06-27 23:16:26,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 182 transitions, 2198 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-27 23:16:26,189 INFO L231 Difference]: Finished difference. Result has 111 places, 169 transitions, 1847 flow [2024-06-27 23:16:26,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1768, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1847, PETRI_PLACES=111, PETRI_TRANSITIONS=169} [2024-06-27 23:16:26,190 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 55 predicate places. [2024-06-27 23:16:26,190 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 169 transitions, 1847 flow [2024-06-27 23:16:26,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:26,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:26,190 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:16:26,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 23:16:26,191 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 23:16:26,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:26,191 INFO L85 PathProgramCache]: Analyzing trace with hash 734901388, now seen corresponding path program 1 times [2024-06-27 23:16:26,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:26,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878189926] [2024-06-27 23:16:26,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:26,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:26,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:29,347 INFO 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 23:16:29,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:29,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878189926] [2024-06-27 23:16:29,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878189926] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:29,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:29,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:16:29,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907540843] [2024-06-27 23:16:29,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:29,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:16:29,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:29,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:16:29,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:16:29,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 53 [2024-06-27 23:16:29,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 169 transitions, 1847 flow. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:29,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:29,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 53 [2024-06-27 23:16:29,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:33,454 INFO L124 PetriNetUnfolderBase]: 16543/22388 cut-off events. [2024-06-27 23:16:33,454 INFO L125 PetriNetUnfolderBase]: For 264666/264682 co-relation queries the response was YES. [2024-06-27 23:16:33,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104862 conditions, 22388 events. 16543/22388 cut-off events. For 264666/264682 co-relation queries the response was YES. Maximal size of possible extension queue 680. Compared 118325 event pairs, 6874 based on Foata normal form. 24/22408 useless extension candidates. Maximal degree in co-relation 104812. Up to 21328 conditions per place. [2024-06-27 23:16:33,600 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 115 selfloop transitions, 112 changer transitions 0/232 dead transitions. [2024-06-27 23:16:33,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 232 transitions, 2935 flow [2024-06-27 23:16:33,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:16:33,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:16:33,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 182 transitions. [2024-06-27 23:16:33,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49056603773584906 [2024-06-27 23:16:33,617 INFO L175 Difference]: Start difference. First operand has 111 places, 169 transitions, 1847 flow. Second operand 7 states and 182 transitions. [2024-06-27 23:16:33,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 232 transitions, 2935 flow [2024-06-27 23:16:33,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 232 transitions, 2886 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-06-27 23:16:33,756 INFO L231 Difference]: Finished difference. Result has 114 places, 185 transitions, 2257 flow [2024-06-27 23:16:33,757 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1798, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2257, PETRI_PLACES=114, PETRI_TRANSITIONS=185} [2024-06-27 23:16:33,757 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 58 predicate places. [2024-06-27 23:16:33,757 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 185 transitions, 2257 flow [2024-06-27 23:16:33,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:33,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:33,757 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:16:33,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 23:16:33,758 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 23:16:33,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:33,758 INFO L85 PathProgramCache]: Analyzing trace with hash 734895808, now seen corresponding path program 2 times [2024-06-27 23:16:33,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:33,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643156827] [2024-06-27 23:16:33,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:33,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:33,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:36,748 INFO 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 23:16:36,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:36,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643156827] [2024-06-27 23:16:36,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643156827] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:36,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:36,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:16:36,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46327464] [2024-06-27 23:16:36,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:36,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:16:36,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:36,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:16:36,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:16:36,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 53 [2024-06-27 23:16:36,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 185 transitions, 2257 flow. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:36,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:36,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 53 [2024-06-27 23:16:36,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:41,451 INFO L124 PetriNetUnfolderBase]: 16511/22366 cut-off events. [2024-06-27 23:16:41,451 INFO L125 PetriNetUnfolderBase]: For 294105/294131 co-relation queries the response was YES. [2024-06-27 23:16:41,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107176 conditions, 22366 events. 16511/22366 cut-off events. For 294105/294131 co-relation queries the response was YES. Maximal size of possible extension queue 680. Compared 118455 event pairs, 6873 based on Foata normal form. 34/22396 useless extension candidates. Maximal degree in co-relation 107124. Up to 21301 conditions per place. [2024-06-27 23:16:41,595 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 113 selfloop transitions, 114 changer transitions 0/232 dead transitions. [2024-06-27 23:16:41,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 232 transitions, 3069 flow [2024-06-27 23:16:41,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:16:41,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:16:41,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 181 transitions. [2024-06-27 23:16:41,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48787061994609165 [2024-06-27 23:16:41,597 INFO L175 Difference]: Start difference. First operand has 114 places, 185 transitions, 2257 flow. Second operand 7 states and 181 transitions. [2024-06-27 23:16:41,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 232 transitions, 3069 flow [2024-06-27 23:16:41,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 232 transitions, 2853 flow, removed 44 selfloop flow, removed 3 redundant places. [2024-06-27 23:16:41,786 INFO L231 Difference]: Finished difference. Result has 119 places, 186 transitions, 2350 flow [2024-06-27 23:16:41,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2041, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2350, PETRI_PLACES=119, PETRI_TRANSITIONS=186} [2024-06-27 23:16:41,786 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 63 predicate places. [2024-06-27 23:16:41,786 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 186 transitions, 2350 flow [2024-06-27 23:16:41,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:41,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:41,787 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:16:41,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 23:16:41,787 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 23:16:41,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:41,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1835489104, now seen corresponding path program 3 times [2024-06-27 23:16:41,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:41,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97838807] [2024-06-27 23:16:41,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:41,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:41,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:45,020 INFO 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 23:16:45,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:45,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97838807] [2024-06-27 23:16:45,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97838807] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:45,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:45,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:16:45,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364924843] [2024-06-27 23:16:45,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:45,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:16:45,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:45,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:16:45,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:16:45,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 53 [2024-06-27 23:16:45,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 186 transitions, 2350 flow. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:45,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:45,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 53 [2024-06-27 23:16:45,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:49,217 INFO L124 PetriNetUnfolderBase]: 16479/22304 cut-off events. [2024-06-27 23:16:49,218 INFO L125 PetriNetUnfolderBase]: For 323444/323474 co-relation queries the response was YES. [2024-06-27 23:16:49,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108819 conditions, 22304 events. 16479/22304 cut-off events. For 323444/323474 co-relation queries the response was YES. Maximal size of possible extension queue 680. Compared 117880 event pairs, 6853 based on Foata normal form. 40/22340 useless extension candidates. Maximal degree in co-relation 108763. Up to 21274 conditions per place. [2024-06-27 23:16:49,376 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 109 selfloop transitions, 111 changer transitions 0/225 dead transitions. [2024-06-27 23:16:49,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 225 transitions, 3025 flow [2024-06-27 23:16:49,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:16:49,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:16:49,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 171 transitions. [2024-06-27 23:16:49,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4609164420485175 [2024-06-27 23:16:49,379 INFO L175 Difference]: Start difference. First operand has 119 places, 186 transitions, 2350 flow. Second operand 7 states and 171 transitions. [2024-06-27 23:16:49,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 225 transitions, 3025 flow [2024-06-27 23:16:49,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 225 transitions, 2841 flow, removed 28 selfloop flow, removed 3 redundant places. [2024-06-27 23:16:49,602 INFO L231 Difference]: Finished difference. Result has 123 places, 186 transitions, 2405 flow [2024-06-27 23:16:49,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2166, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2405, PETRI_PLACES=123, PETRI_TRANSITIONS=186} [2024-06-27 23:16:49,603 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 67 predicate places. [2024-06-27 23:16:49,603 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 186 transitions, 2405 flow [2024-06-27 23:16:49,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:49,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:49,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:16:49,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 23:16:49,604 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 23:16:49,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:49,604 INFO L85 PathProgramCache]: Analyzing trace with hash -482646878, now seen corresponding path program 4 times [2024-06-27 23:16:49,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:49,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232002127] [2024-06-27 23:16:49,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:49,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:49,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:52,225 INFO 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 23:16:52,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:52,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232002127] [2024-06-27 23:16:52,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232002127] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:52,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:52,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:16:52,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010084886] [2024-06-27 23:16:52,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:52,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:16:52,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:52,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:16:52,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:16:52,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 53 [2024-06-27 23:16:52,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 186 transitions, 2405 flow. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:52,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:52,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 53 [2024-06-27 23:16:52,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:56,725 INFO L124 PetriNetUnfolderBase]: 16690/22637 cut-off events. [2024-06-27 23:16:56,725 INFO L125 PetriNetUnfolderBase]: For 357803/357825 co-relation queries the response was YES. [2024-06-27 23:16:56,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112278 conditions, 22637 events. 16690/22637 cut-off events. For 357803/357825 co-relation queries the response was YES. Maximal size of possible extension queue 680. Compared 120164 event pairs, 6847 based on Foata normal form. 26/22661 useless extension candidates. Maximal degree in co-relation 112219. Up to 21450 conditions per place. [2024-06-27 23:16:56,875 INFO L140 encePairwiseOnDemand]: 37/53 looper letters, 117 selfloop transitions, 143 changer transitions 0/265 dead transitions. [2024-06-27 23:16:56,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 265 transitions, 3643 flow [2024-06-27 23:16:56,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:16:56,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:16:56,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 201 transitions. [2024-06-27 23:16:56,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4740566037735849 [2024-06-27 23:16:56,893 INFO L175 Difference]: Start difference. First operand has 123 places, 186 transitions, 2405 flow. Second operand 8 states and 201 transitions. [2024-06-27 23:16:56,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 265 transitions, 3643 flow [2024-06-27 23:16:57,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 265 transitions, 3418 flow, removed 19 selfloop flow, removed 4 redundant places. [2024-06-27 23:16:57,135 INFO L231 Difference]: Finished difference. Result has 129 places, 218 transitions, 3078 flow [2024-06-27 23:16:57,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2222, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3078, PETRI_PLACES=129, PETRI_TRANSITIONS=218} [2024-06-27 23:16:57,136 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 73 predicate places. [2024-06-27 23:16:57,136 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 218 transitions, 3078 flow [2024-06-27 23:16:57,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:57,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:57,136 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:16:57,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 23:16:57,136 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 23:16:57,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:57,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1760254672, now seen corresponding path program 5 times [2024-06-27 23:16:57,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:57,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777005506] [2024-06-27 23:16:57,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:57,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:57,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:59,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:59,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:59,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777005506] [2024-06-27 23:16:59,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777005506] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:59,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:59,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:16:59,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650551838] [2024-06-27 23:16:59,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:59,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:16:59,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:59,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:16:59,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:16:59,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 53 [2024-06-27 23:16:59,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 218 transitions, 3078 flow. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:59,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:59,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 53 [2024-06-27 23:16:59,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:17:03,987 INFO L124 PetriNetUnfolderBase]: 16852/22850 cut-off events. [2024-06-27 23:17:03,987 INFO L125 PetriNetUnfolderBase]: For 395804/395830 co-relation queries the response was YES. [2024-06-27 23:17:04,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116089 conditions, 22850 events. 16852/22850 cut-off events. For 395804/395830 co-relation queries the response was YES. Maximal size of possible extension queue 680. Compared 121187 event pairs, 6826 based on Foata normal form. 30/22878 useless extension candidates. Maximal degree in co-relation 116027. Up to 21571 conditions per place. [2024-06-27 23:17:04,139 INFO L140 encePairwiseOnDemand]: 38/53 looper letters, 119 selfloop transitions, 154 changer transitions 0/278 dead transitions. [2024-06-27 23:17:04,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 278 transitions, 4014 flow [2024-06-27 23:17:04,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:17:04,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:17:04,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-27 23:17:04,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46226415094339623 [2024-06-27 23:17:04,141 INFO L175 Difference]: Start difference. First operand has 129 places, 218 transitions, 3078 flow. Second operand 8 states and 196 transitions. [2024-06-27 23:17:04,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 278 transitions, 4014 flow [2024-06-27 23:17:04,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 278 transitions, 3789 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-06-27 23:17:04,523 INFO L231 Difference]: Finished difference. Result has 134 places, 235 transitions, 3483 flow [2024-06-27 23:17:04,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2868, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3483, PETRI_PLACES=134, PETRI_TRANSITIONS=235} [2024-06-27 23:17:04,524 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 78 predicate places. [2024-06-27 23:17:04,524 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 235 transitions, 3483 flow [2024-06-27 23:17:04,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:17:04,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:17:04,525 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:17:04,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 23:17:04,525 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:17:04,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:17:04,525 INFO L85 PathProgramCache]: Analyzing trace with hash 755372979, now seen corresponding path program 1 times [2024-06-27 23:17:04,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:17:04,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290100141] [2024-06-27 23:17:04,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:17:04,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:17:04,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:17:08,514 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 23:17:08,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:17:08,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290100141] [2024-06-27 23:17:08,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290100141] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:17:08,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:17:08,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:17:08,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110725528] [2024-06-27 23:17:08,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:17:08,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:17:08,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:17:08,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:17:08,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:17:08,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2024-06-27 23:17:08,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 235 transitions, 3483 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states 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 23:17:08,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:17:08,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2024-06-27 23:17:08,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:17:12,550 INFO L124 PetriNetUnfolderBase]: 14842/20657 cut-off events. [2024-06-27 23:17:12,550 INFO L125 PetriNetUnfolderBase]: For 389735/389737 co-relation queries the response was YES. [2024-06-27 23:17:12,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106047 conditions, 20657 events. 14842/20657 cut-off events. For 389735/389737 co-relation queries the response was YES. Maximal size of possible extension queue 638. Compared 114698 event pairs, 6740 based on Foata normal form. 6/20641 useless extension candidates. Maximal degree in co-relation 105983. Up to 19986 conditions per place. [2024-06-27 23:17:12,686 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 236 selfloop transitions, 16 changer transitions 0/258 dead transitions. [2024-06-27 23:17:12,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 258 transitions, 4087 flow [2024-06-27 23:17:12,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:17:12,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:17:12,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 148 transitions. [2024-06-27 23:17:12,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39892183288409705 [2024-06-27 23:17:12,688 INFO L175 Difference]: Start difference. First operand has 134 places, 235 transitions, 3483 flow. Second operand 7 states and 148 transitions. [2024-06-27 23:17:12,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 258 transitions, 4087 flow [2024-06-27 23:17:12,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 258 transitions, 3898 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-27 23:17:12,971 INFO L231 Difference]: Finished difference. Result has 137 places, 239 transitions, 3387 flow [2024-06-27 23:17:12,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=3294, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3387, PETRI_PLACES=137, PETRI_TRANSITIONS=239} [2024-06-27 23:17:12,972 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 81 predicate places. [2024-06-27 23:17:12,972 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 239 transitions, 3387 flow [2024-06-27 23:17:12,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states 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 23:17:12,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:17:12,972 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:17:12,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 23:17:12,972 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:17:12,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:17:12,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1361961401, now seen corresponding path program 1 times [2024-06-27 23:17:12,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:17:12,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715576383] [2024-06-27 23:17:12,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:17:12,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:17:12,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:17:16,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:17:16,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:17:16,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715576383] [2024-06-27 23:17:16,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715576383] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:17:16,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:17:16,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:17:16,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169110893] [2024-06-27 23:17:16,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:17:16,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:17:16,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:17:16,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:17:16,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:17:16,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 53 [2024-06-27 23:17:16,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 239 transitions, 3387 flow. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:17:16,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:17:16,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 53 [2024-06-27 23:17:16,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:17:20,939 INFO L124 PetriNetUnfolderBase]: 16867/22885 cut-off events. [2024-06-27 23:17:20,939 INFO L125 PetriNetUnfolderBase]: For 479168/479184 co-relation queries the response was YES. [2024-06-27 23:17:21,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121945 conditions, 22885 events. 16867/22885 cut-off events. For 479168/479184 co-relation queries the response was YES. Maximal size of possible extension queue 680. Compared 122033 event pairs, 7696 based on Foata normal form. 22/22903 useless extension candidates. Maximal degree in co-relation 121880. Up to 22348 conditions per place. [2024-06-27 23:17:21,121 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 199 selfloop transitions, 70 changer transitions 0/274 dead transitions. [2024-06-27 23:17:21,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 274 transitions, 4083 flow [2024-06-27 23:17:21,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:17:21,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:17:21,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 177 transitions. [2024-06-27 23:17:21,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41745283018867924 [2024-06-27 23:17:21,123 INFO L175 Difference]: Start difference. First operand has 137 places, 239 transitions, 3387 flow. Second operand 8 states and 177 transitions. [2024-06-27 23:17:21,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 274 transitions, 4083 flow [2024-06-27 23:17:21,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 274 transitions, 4020 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-27 23:17:21,543 INFO L231 Difference]: Finished difference. Result has 140 places, 242 transitions, 3524 flow [2024-06-27 23:17:21,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=3324, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3524, PETRI_PLACES=140, PETRI_TRANSITIONS=242} [2024-06-27 23:17:21,544 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 84 predicate places. [2024-06-27 23:17:21,544 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 242 transitions, 3524 flow [2024-06-27 23:17:21,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:17:21,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:17:21,545 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:17:21,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 23:17:21,545 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 23:17:21,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:17:21,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1364818361, now seen corresponding path program 2 times [2024-06-27 23:17:21,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:17:21,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514840376] [2024-06-27 23:17:21,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:17:21,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:17:21,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat