./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix021_tso.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix021_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/mix021_tso.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix021_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 --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 22:13:46,066 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 22:13:46,121 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 22:13:46,129 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 22:13:46,129 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 22:13:46,155 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 22:13:46,156 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 22:13:46,156 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 22:13:46,156 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 22:13:46,159 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 22:13:46,160 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 22:13:46,160 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 22:13:46,161 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 22:13:46,162 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 22:13:46,162 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 22:13:46,162 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 22:13:46,162 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 22:13:46,162 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 22:13:46,163 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 22:13:46,163 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 22:13:46,163 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 22:13:46,163 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 22:13:46,163 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 22:13:46,164 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 22:13:46,164 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 22:13:46,164 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 22:13:46,164 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 22:13:46,164 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 22:13:46,165 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 22:13:46,165 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 22:13:46,166 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 22:13:46,166 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 22:13:46,166 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:13:46,166 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 22:13:46,167 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 22:13:46,167 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 22:13:46,167 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 22:13:46,167 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 22:13:46,167 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 22:13:46,167 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 22:13:46,167 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 22:13:46,168 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 22:13:46,168 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 22:13:46,168 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 22:13:46,388 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 22:13:46,412 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 22:13:46,414 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 22:13:46,415 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 22:13:46,415 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 22:13:46,416 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix021_tso.oepc.yml/witness.yml [2024-06-27 22:13:46,483 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 22:13:46,484 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 22:13:46,485 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix021_tso.oepc.i [2024-06-27 22:13:47,490 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 22:13:47,744 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 22:13:47,749 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix021_tso.oepc.i [2024-06-27 22:13:47,765 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86c44991b/6f25ad0b72d24c70a1e86aa1c102e90f/FLAGfe018b811 [2024-06-27 22:13:47,778 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86c44991b/6f25ad0b72d24c70a1e86aa1c102e90f [2024-06-27 22:13:47,779 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 22:13:47,780 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 22:13:47,782 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 22:13:47,782 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 22:13:47,786 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 22:13:47,786 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:13:46" (1/2) ... [2024-06-27 22:13:47,787 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1eb65d22 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:13:47, skipping insertion in model container [2024-06-27 22:13:47,787 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:13:46" (1/2) ... [2024-06-27 22:13:47,789 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6d2f97ef and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:13:47, skipping insertion in model container [2024-06-27 22:13:47,790 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:13:47" (2/2) ... [2024-06-27 22:13:47,790 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1eb65d22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:13:47, skipping insertion in model container [2024-06-27 22:13:47,790 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:13:47" (2/2) ... [2024-06-27 22:13:47,791 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 22:13:47,816 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 22:13:47,817 INFO L97 edCorrectnessWitness]: Location invariant before [L851-L851] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p2_EAX) + (long long )z >= 0LL && (0LL - (long long )__unbuffered_p3_EAX) + (long long )z >= 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) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p3_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p3_EBX) - (long long )a >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$r_buff1_thd3 >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$w_buff1_used >= 0LL) && (long long )y$r_buff1_thd3 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0_used - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff1 - (long long )y$w_buff1_used >= 0LL) [2024-06-27 22:13:47,817 INFO L97 edCorrectnessWitness]: Location invariant before [L853-L853] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p2_EAX) + (long long )z >= 0LL && (0LL - (long long )__unbuffered_p3_EAX) + (long long )z >= 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) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p3_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p3_EBX) - (long long )a >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$r_buff1_thd3 >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$w_buff1_used >= 0LL) && (long long )y$r_buff1_thd3 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0_used - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff1 - (long long )y$w_buff1_used >= 0LL) [2024-06-27 22:13:47,817 INFO L97 edCorrectnessWitness]: Location invariant before [L854-L854] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p2_EAX) + (long long )z >= 0LL && (0LL - (long long )__unbuffered_p3_EAX) + (long long )z >= 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) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p3_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p3_EBX) - (long long )a >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$r_buff1_thd3 >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$w_buff1_used >= 0LL) && (long long )y$r_buff1_thd3 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0_used - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff1 - (long long )y$w_buff1_used >= 0LL) [2024-06-27 22:13:47,817 INFO L97 edCorrectnessWitness]: Location invariant before [L849-L849] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p2_EAX) + (long long )z >= 0LL && (0LL - (long long )__unbuffered_p3_EAX) + (long long )z >= 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) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p3_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p3_EBX) - (long long )a >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$r_buff1_thd3 >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$w_buff1_used >= 0LL) && (long long )y$r_buff1_thd3 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0_used - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff1 - (long long )y$w_buff1_used >= 0LL) [2024-06-27 22:13:47,817 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 22:13:47,818 INFO L106 edCorrectnessWitness]: ghost_update [L847-L847] multithreaded = 1; [2024-06-27 22:13:47,854 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 22:13:48,033 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix021_tso.oepc.i[949,962] [2024-06-27 22:13:48,178 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:13:48,192 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 22:13:48,222 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix021_tso.oepc.i[949,962] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 22:13:48,343 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:13:48,370 INFO L206 MainTranslator]: Completed translation [2024-06-27 22:13:48,371 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:13:48 WrapperNode [2024-06-27 22:13:48,371 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 22:13:48,372 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 22:13:48,372 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 22:13:48,372 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 22:13:48,377 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:13:48" (1/1) ... [2024-06-27 22:13:48,391 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:13:48" (1/1) ... [2024-06-27 22:13:48,434 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 153 [2024-06-27 22:13:48,435 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 22:13:48,435 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 22:13:48,435 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 22:13:48,435 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 22:13:48,443 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:13:48" (1/1) ... [2024-06-27 22:13:48,444 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:13:48" (1/1) ... [2024-06-27 22:13:48,447 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:13:48" (1/1) ... [2024-06-27 22:13:48,464 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-27 22:13:48,464 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:13:48" (1/1) ... [2024-06-27 22:13:48,464 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:13:48" (1/1) ... [2024-06-27 22:13:48,488 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:13:48" (1/1) ... [2024-06-27 22:13:48,490 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:13:48" (1/1) ... [2024-06-27 22:13:48,492 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:13:48" (1/1) ... [2024-06-27 22:13:48,494 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:13:48" (1/1) ... [2024-06-27 22:13:48,502 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 22:13:48,503 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 22:13:48,503 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 22:13:48,505 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 22:13:48,506 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:13:48" (1/1) ... [2024-06-27 22:13:48,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:13:48,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 22:13:48,529 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-27 22:13:48,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-27 22:13:48,558 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 22:13:48,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 22:13:48,558 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 22:13:48,559 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 22:13:48,559 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 22:13:48,559 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 22:13:48,559 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 22:13:48,559 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 22:13:48,559 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-27 22:13:48,560 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-27 22:13:48,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 22:13:48,561 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 22:13:48,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 22:13:48,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 22:13:48,563 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 22:13:48,698 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 22:13:48,700 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 22:13:49,224 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 22:13:49,224 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 22:13:49,376 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 22:13:49,377 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 22:13:49,377 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:13:49 BoogieIcfgContainer [2024-06-27 22:13:49,377 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 22:13:49,378 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 22:13:49,378 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 22:13:49,381 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 22:13:49,381 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:13:46" (1/4) ... [2024-06-27 22:13:49,381 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68e81b88 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 10:13:49, skipping insertion in model container [2024-06-27 22:13:49,381 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 10:13:47" (2/4) ... [2024-06-27 22:13:49,381 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68e81b88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 10:13:49, skipping insertion in model container [2024-06-27 22:13:49,382 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:13:48" (3/4) ... [2024-06-27 22:13:49,382 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68e81b88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 10:13:49, skipping insertion in model container [2024-06-27 22:13:49,382 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:13:49" (4/4) ... [2024-06-27 22:13:49,383 INFO L112 eAbstractionObserver]: Analyzing ICFG mix021_tso.oepc.i [2024-06-27 22:13:49,395 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 22:13:49,396 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-06-27 22:13:49,396 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 22:13:49,439 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 22:13:49,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 58 transitions, 132 flow [2024-06-27 22:13:49,501 INFO L124 PetriNetUnfolderBase]: 1/54 cut-off events. [2024-06-27 22:13:49,501 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:13:49,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 54 events. 1/54 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 96 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 57. Up to 2 conditions per place. [2024-06-27 22:13:49,505 INFO L82 GeneralOperation]: Start removeDead. Operand has 70 places, 58 transitions, 132 flow [2024-06-27 22:13:49,507 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 54 transitions, 120 flow [2024-06-27 22:13:49,513 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 22:13:49,518 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;@2a32ec9f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 22:13:49,518 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-06-27 22:13:49,521 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 22:13:49,521 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-27 22:13:49,521 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:13:49,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:13:49,521 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 22:13:49,522 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 22:13:49,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:13:49,525 INFO L85 PathProgramCache]: Analyzing trace with hash 368454972, now seen corresponding path program 1 times [2024-06-27 22:13:49,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:13:49,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393644720] [2024-06-27 22:13:49,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:13:49,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:13:49,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:13:50,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:13:50,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:13:50,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393644720] [2024-06-27 22:13:50,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393644720] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:13:50,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:13:50,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 22:13:50,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524906084] [2024-06-27 22:13:50,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:13:50,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 22:13:50,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:13:50,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 22:13:50,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 22:13:50,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 58 [2024-06-27 22:13:50,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 54 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:13:50,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:13:50,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 58 [2024-06-27 22:13:50,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:13:54,040 INFO L124 PetriNetUnfolderBase]: 24556/34963 cut-off events. [2024-06-27 22:13:54,041 INFO L125 PetriNetUnfolderBase]: For 212/212 co-relation queries the response was YES. [2024-06-27 22:13:54,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68000 conditions, 34963 events. 24556/34963 cut-off events. For 212/212 co-relation queries the response was YES. Maximal size of possible extension queue 1289. Compared 230448 event pairs, 16683 based on Foata normal form. 900/33891 useless extension candidates. Maximal degree in co-relation 67987. Up to 32585 conditions per place. [2024-06-27 22:13:54,268 INFO L140 encePairwiseOnDemand]: 47/58 looper letters, 53 selfloop transitions, 5 changer transitions 0/72 dead transitions. [2024-06-27 22:13:54,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 72 transitions, 281 flow [2024-06-27 22:13:54,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 22:13:54,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 22:13:54,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 119 transitions. [2024-06-27 22:13:54,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6839080459770115 [2024-06-27 22:13:54,279 INFO L175 Difference]: Start difference. First operand has 66 places, 54 transitions, 120 flow. Second operand 3 states and 119 transitions. [2024-06-27 22:13:54,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 72 transitions, 281 flow [2024-06-27 22:13:54,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 72 transitions, 274 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-27 22:13:54,289 INFO L231 Difference]: Finished difference. Result has 65 places, 57 transitions, 155 flow [2024-06-27 22:13:54,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=155, PETRI_PLACES=65, PETRI_TRANSITIONS=57} [2024-06-27 22:13:54,294 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, -1 predicate places. [2024-06-27 22:13:54,294 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 57 transitions, 155 flow [2024-06-27 22:13:54,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:13:54,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:13:54,295 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:13:54,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 22:13:54,295 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 22:13:54,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:13:54,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1897929947, now seen corresponding path program 1 times [2024-06-27 22:13:54,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:13:54,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255477032] [2024-06-27 22:13:54,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:13:54,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:13:54,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:13:55,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:13:55,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:13:55,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255477032] [2024-06-27 22:13:55,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255477032] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:13:55,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:13:55,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 22:13:55,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42363358] [2024-06-27 22:13:55,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:13:55,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 22:13:55,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:13:55,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 22:13:55,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 22:13:55,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 58 [2024-06-27 22:13:55,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 57 transitions, 155 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:13:55,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:13:55,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 58 [2024-06-27 22:13:55,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:13:58,518 INFO L124 PetriNetUnfolderBase]: 29315/42484 cut-off events. [2024-06-27 22:13:58,519 INFO L125 PetriNetUnfolderBase]: For 6425/6425 co-relation queries the response was YES. [2024-06-27 22:13:58,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90978 conditions, 42484 events. 29315/42484 cut-off events. For 6425/6425 co-relation queries the response was YES. Maximal size of possible extension queue 1530. Compared 292794 event pairs, 23176 based on Foata normal form. 4/39780 useless extension candidates. Maximal degree in co-relation 90966. Up to 38737 conditions per place. [2024-06-27 22:13:58,784 INFO L140 encePairwiseOnDemand]: 47/58 looper letters, 69 selfloop transitions, 9 changer transitions 0/91 dead transitions. [2024-06-27 22:13:58,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 91 transitions, 397 flow [2024-06-27 22:13:58,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 22:13:58,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 22:13:58,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 151 transitions. [2024-06-27 22:13:58,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6508620689655172 [2024-06-27 22:13:58,791 INFO L175 Difference]: Start difference. First operand has 65 places, 57 transitions, 155 flow. Second operand 4 states and 151 transitions. [2024-06-27 22:13:58,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 91 transitions, 397 flow [2024-06-27 22:13:58,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 91 transitions, 392 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 22:13:58,794 INFO L231 Difference]: Finished difference. Result has 68 places, 61 transitions, 205 flow [2024-06-27 22:13:58,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=205, PETRI_PLACES=68, PETRI_TRANSITIONS=61} [2024-06-27 22:13:58,795 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 2 predicate places. [2024-06-27 22:13:58,797 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 61 transitions, 205 flow [2024-06-27 22:13:58,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:13:58,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:13:58,798 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:13:58,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 22:13:58,803 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 22:13:58,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:13:58,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1293713097, now seen corresponding path program 1 times [2024-06-27 22:13:58,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:13:58,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127497585] [2024-06-27 22:13:58,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:13:58,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:13:58,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:13:59,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:13:59,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:13:59,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127497585] [2024-06-27 22:13:59,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127497585] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:13:59,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:13:59,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:13:59,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034174651] [2024-06-27 22:13:59,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:13:59,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:13:59,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:13:59,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:13:59,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:13:59,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 58 [2024-06-27 22:13:59,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 61 transitions, 205 flow. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:13:59,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:13:59,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 58 [2024-06-27 22:13:59,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:14:03,047 INFO L124 PetriNetUnfolderBase]: 29181/39790 cut-off events. [2024-06-27 22:14:03,047 INFO L125 PetriNetUnfolderBase]: For 16315/16315 co-relation queries the response was YES. [2024-06-27 22:14:03,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97155 conditions, 39790 events. 29181/39790 cut-off events. For 16315/16315 co-relation queries the response was YES. Maximal size of possible extension queue 1423. Compared 244355 event pairs, 15202 based on Foata normal form. 7/38118 useless extension candidates. Maximal degree in co-relation 97141. Up to 38408 conditions per place. [2024-06-27 22:14:03,275 INFO L140 encePairwiseOnDemand]: 45/58 looper letters, 92 selfloop transitions, 21 changer transitions 0/126 dead transitions. [2024-06-27 22:14:03,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 126 transitions, 635 flow [2024-06-27 22:14:03,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:14:03,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:14:03,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 199 transitions. [2024-06-27 22:14:03,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6862068965517242 [2024-06-27 22:14:03,277 INFO L175 Difference]: Start difference. First operand has 68 places, 61 transitions, 205 flow. Second operand 5 states and 199 transitions. [2024-06-27 22:14:03,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 126 transitions, 635 flow [2024-06-27 22:14:03,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 126 transitions, 616 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-27 22:14:03,283 INFO L231 Difference]: Finished difference. Result has 73 places, 75 transitions, 342 flow [2024-06-27 22:14:03,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=342, PETRI_PLACES=73, PETRI_TRANSITIONS=75} [2024-06-27 22:14:03,284 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 7 predicate places. [2024-06-27 22:14:03,284 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 75 transitions, 342 flow [2024-06-27 22:14:03,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:14:03,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:14:03,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:14:03,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 22:14:03,285 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 22:14:03,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:14:03,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1153840040, now seen corresponding path program 1 times [2024-06-27 22:14:03,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:14:03,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874556816] [2024-06-27 22:14:03,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:14:03,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:14:03,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:14:04,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:14:04,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:14:04,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874556816] [2024-06-27 22:14:04,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874556816] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:14:04,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:14:04,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:14:04,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263428300] [2024-06-27 22:14:04,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:14:04,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:14:04,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:14:04,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:14:04,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:14:04,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 58 [2024-06-27 22:14:04,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 75 transitions, 342 flow. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:14:04,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:14:04,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 58 [2024-06-27 22:14:04,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:14:07,955 INFO L124 PetriNetUnfolderBase]: 29171/42297 cut-off events. [2024-06-27 22:14:07,955 INFO L125 PetriNetUnfolderBase]: For 63681/63687 co-relation queries the response was YES. [2024-06-27 22:14:08,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117112 conditions, 42297 events. 29171/42297 cut-off events. For 63681/63687 co-relation queries the response was YES. Maximal size of possible extension queue 1530. Compared 292269 event pairs, 17000 based on Foata normal form. 63/41226 useless extension candidates. Maximal degree in co-relation 117095. Up to 38280 conditions per place. [2024-06-27 22:14:08,234 INFO L140 encePairwiseOnDemand]: 45/58 looper letters, 104 selfloop transitions, 25 changer transitions 0/142 dead transitions. [2024-06-27 22:14:08,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 142 transitions, 806 flow [2024-06-27 22:14:08,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:14:08,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:14:08,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 230 transitions. [2024-06-27 22:14:08,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6609195402298851 [2024-06-27 22:14:08,236 INFO L175 Difference]: Start difference. First operand has 73 places, 75 transitions, 342 flow. Second operand 6 states and 230 transitions. [2024-06-27 22:14:08,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 142 transitions, 806 flow [2024-06-27 22:14:08,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 142 transitions, 794 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-06-27 22:14:08,249 INFO L231 Difference]: Finished difference. Result has 78 places, 78 transitions, 421 flow [2024-06-27 22:14:08,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=421, PETRI_PLACES=78, PETRI_TRANSITIONS=78} [2024-06-27 22:14:08,250 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 12 predicate places. [2024-06-27 22:14:08,250 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 78 transitions, 421 flow [2024-06-27 22:14:08,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:14:08,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:14:08,250 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:14:08,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 22:14:08,251 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 22:14:08,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:14:08,251 INFO L85 PathProgramCache]: Analyzing trace with hash 2107829422, now seen corresponding path program 1 times [2024-06-27 22:14:08,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:14:08,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211884688] [2024-06-27 22:14:08,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:14:08,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:14:08,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:14:09,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:14:09,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:14:09,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211884688] [2024-06-27 22:14:09,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211884688] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:14:09,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:14:09,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:14:09,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100957626] [2024-06-27 22:14:09,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:14:09,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:14:09,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:14:09,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:14:09,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:14:09,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 58 [2024-06-27 22:14:09,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 78 transitions, 421 flow. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:14:09,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:14:09,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 58 [2024-06-27 22:14:09,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:14:13,081 INFO L124 PetriNetUnfolderBase]: 27270/38594 cut-off events. [2024-06-27 22:14:13,081 INFO L125 PetriNetUnfolderBase]: For 76259/76259 co-relation queries the response was YES. [2024-06-27 22:14:13,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117796 conditions, 38594 events. 27270/38594 cut-off events. For 76259/76259 co-relation queries the response was YES. Maximal size of possible extension queue 1358. Compared 253810 event pairs, 12618 based on Foata normal form. 3/38132 useless extension candidates. Maximal degree in co-relation 117775. Up to 36111 conditions per place. [2024-06-27 22:14:13,509 INFO L140 encePairwiseOnDemand]: 47/58 looper letters, 84 selfloop transitions, 12 changer transitions 0/108 dead transitions. [2024-06-27 22:14:13,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 108 transitions, 693 flow [2024-06-27 22:14:13,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:14:13,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:14:13,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 161 transitions. [2024-06-27 22:14:13,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5551724137931034 [2024-06-27 22:14:13,510 INFO L175 Difference]: Start difference. First operand has 78 places, 78 transitions, 421 flow. Second operand 5 states and 161 transitions. [2024-06-27 22:14:13,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 108 transitions, 693 flow [2024-06-27 22:14:13,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 108 transitions, 622 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-27 22:14:13,537 INFO L231 Difference]: Finished difference. Result has 80 places, 80 transitions, 406 flow [2024-06-27 22:14:13,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=406, PETRI_PLACES=80, PETRI_TRANSITIONS=80} [2024-06-27 22:14:13,537 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 14 predicate places. [2024-06-27 22:14:13,538 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 80 transitions, 406 flow [2024-06-27 22:14:13,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:14:13,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:14:13,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:14:13,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 22:14:13,538 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 22:14:13,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:14:13,539 INFO L85 PathProgramCache]: Analyzing trace with hash 917368558, now seen corresponding path program 1 times [2024-06-27 22:14:13,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:14:13,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938694128] [2024-06-27 22:14:13,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:14:13,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:14:13,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:14:14,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:14:14,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:14:14,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938694128] [2024-06-27 22:14:14,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938694128] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:14:14,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:14:14,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:14:14,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992567831] [2024-06-27 22:14:14,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:14:14,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:14:14,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:14:14,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:14:14,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:14:15,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 58 [2024-06-27 22:14:15,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 80 transitions, 406 flow. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:14:15,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:14:15,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 58 [2024-06-27 22:14:15,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:14:19,109 INFO L124 PetriNetUnfolderBase]: 27282/40574 cut-off events. [2024-06-27 22:14:19,110 INFO L125 PetriNetUnfolderBase]: For 85428/85428 co-relation queries the response was YES. [2024-06-27 22:14:19,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120198 conditions, 40574 events. 27282/40574 cut-off events. For 85428/85428 co-relation queries the response was YES. Maximal size of possible extension queue 1450. Compared 290695 event pairs, 14536 based on Foata normal form. 10/39153 useless extension candidates. Maximal degree in co-relation 120173. Up to 36030 conditions per place. [2024-06-27 22:14:19,326 INFO L140 encePairwiseOnDemand]: 44/58 looper letters, 109 selfloop transitions, 24 changer transitions 0/145 dead transitions. [2024-06-27 22:14:19,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 145 transitions, 942 flow [2024-06-27 22:14:19,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:14:19,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:14:19,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 224 transitions. [2024-06-27 22:14:19,327 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5517241379310345 [2024-06-27 22:14:19,327 INFO L175 Difference]: Start difference. First operand has 80 places, 80 transitions, 406 flow. Second operand 7 states and 224 transitions. [2024-06-27 22:14:19,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 145 transitions, 942 flow [2024-06-27 22:14:19,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 145 transitions, 900 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 22:14:19,347 INFO L231 Difference]: Finished difference. Result has 87 places, 101 transitions, 633 flow [2024-06-27 22:14:19,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=633, PETRI_PLACES=87, PETRI_TRANSITIONS=101} [2024-06-27 22:14:19,348 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 21 predicate places. [2024-06-27 22:14:19,348 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 101 transitions, 633 flow [2024-06-27 22:14:19,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:14:19,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:14:19,349 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:14:19,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 22:14:19,349 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 22:14:19,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:14:19,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1892650573, now seen corresponding path program 1 times [2024-06-27 22:14:19,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:14:19,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568732283] [2024-06-27 22:14:19,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:14:19,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:14:19,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:14:20,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:14:20,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:14:20,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568732283] [2024-06-27 22:14:20,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568732283] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:14:20,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:14:20,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:14:20,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053165169] [2024-06-27 22:14:20,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:14:20,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:14:20,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:14:20,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:14:20,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:14:20,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 58 [2024-06-27 22:14:20,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 101 transitions, 633 flow. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 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 22:14:20,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:14:20,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 58 [2024-06-27 22:14:20,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:14:25,461 INFO L124 PetriNetUnfolderBase]: 33011/45708 cut-off events. [2024-06-27 22:14:25,461 INFO L125 PetriNetUnfolderBase]: For 141985/141998 co-relation queries the response was YES. [2024-06-27 22:14:25,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152834 conditions, 45708 events. 33011/45708 cut-off events. For 141985/141998 co-relation queries the response was YES. Maximal size of possible extension queue 1541. Compared 291947 event pairs, 16133 based on Foata normal form. 17/45288 useless extension candidates. Maximal degree in co-relation 152804. Up to 43239 conditions per place. [2024-06-27 22:14:25,761 INFO L140 encePairwiseOnDemand]: 45/58 looper letters, 114 selfloop transitions, 45 changer transitions 0/170 dead transitions. [2024-06-27 22:14:25,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 170 transitions, 1289 flow [2024-06-27 22:14:25,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:14:25,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:14:25,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 204 transitions. [2024-06-27 22:14:25,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5862068965517241 [2024-06-27 22:14:25,763 INFO L175 Difference]: Start difference. First operand has 87 places, 101 transitions, 633 flow. Second operand 6 states and 204 transitions. [2024-06-27 22:14:25,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 170 transitions, 1289 flow [2024-06-27 22:14:25,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 170 transitions, 1260 flow, removed 13 selfloop flow, removed 1 redundant places. [2024-06-27 22:14:25,819 INFO L231 Difference]: Finished difference. Result has 94 places, 119 transitions, 851 flow [2024-06-27 22:14:25,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=604, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=851, PETRI_PLACES=94, PETRI_TRANSITIONS=119} [2024-06-27 22:14:25,820 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 28 predicate places. [2024-06-27 22:14:25,820 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 119 transitions, 851 flow [2024-06-27 22:14:25,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 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 22:14:25,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:14:25,821 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:14:25,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 22:14:25,821 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 22:14:25,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:14:25,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1600433523, now seen corresponding path program 2 times [2024-06-27 22:14:25,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:14:25,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768201961] [2024-06-27 22:14:25,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:14:25,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:14:25,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat