./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-min-max-inc-dec.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-05-07_14-17-48.files/mutex-meet/popl20-min-max-inc-dec.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b44c8288 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/weaver/popl20-min-max-inc-dec.wvr.c ./goblint.2024-05-07_14-17-48.files/mutex-meet/popl20-min-max-inc-dec.wvr.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-wip.fs.witness-ghost-b44c828-m [2024-05-12 10:55:28,832 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-05-12 10:55:28,911 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-05-12 10:55:28,915 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-05-12 10:55:28,916 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-05-12 10:55:28,948 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-05-12 10:55:28,949 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-05-12 10:55:28,949 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-05-12 10:55:28,949 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-05-12 10:55:28,952 INFO L153 SettingsManager]: * Use memory slicer=true [2024-05-12 10:55:28,953 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-05-12 10:55:28,953 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-05-12 10:55:28,954 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-05-12 10:55:28,955 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-05-12 10:55:28,955 INFO L153 SettingsManager]: * Use SBE=true [2024-05-12 10:55:28,955 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-05-12 10:55:28,955 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-05-12 10:55:28,955 INFO L153 SettingsManager]: * sizeof long=4 [2024-05-12 10:55:28,955 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-05-12 10:55:28,956 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-05-12 10:55:28,956 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-05-12 10:55:28,956 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-05-12 10:55:28,956 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-05-12 10:55:28,956 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-05-12 10:55:28,956 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-05-12 10:55:28,957 INFO L153 SettingsManager]: * sizeof long double=12 [2024-05-12 10:55:28,957 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-05-12 10:55:28,957 INFO L153 SettingsManager]: * Use constant arrays=true [2024-05-12 10:55:28,957 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-05-12 10:55:28,958 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-05-12 10:55:28,958 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-05-12 10:55:28,958 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-05-12 10:55:28,959 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 10:55:28,959 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-05-12 10:55:28,959 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-05-12 10:55:28,959 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-05-12 10:55:28,959 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-05-12 10:55:28,959 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-05-12 10:55:28,959 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-05-12 10:55:28,959 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-05-12 10:55:28,960 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-05-12 10:55:28,960 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-05-12 10:55:28,960 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-05-12 10:55:28,960 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-05-12 10:55:29,173 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-05-12 10:55:29,194 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-05-12 10:55:29,196 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-05-12 10:55:29,197 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-05-12 10:55:29,197 INFO L274 PluginConnector]: Witness Parser initialized [2024-05-12 10:55:29,198 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-07_14-17-48.files/mutex-meet/popl20-min-max-inc-dec.wvr.yml/witness.yml [2024-05-12 10:55:29,271 INFO L270 PluginConnector]: Initializing CDTParser... [2024-05-12 10:55:29,271 INFO L274 PluginConnector]: CDTParser initialized [2024-05-12 10:55:29,272 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-min-max-inc-dec.wvr.c [2024-05-12 10:55:30,210 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-05-12 10:55:30,369 INFO L384 CDTParser]: Found 1 translation units. [2024-05-12 10:55:30,369 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-min-max-inc-dec.wvr.c [2024-05-12 10:55:30,377 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/890f083e8/7fc33a15366f402f910afc4819c5fbcd/FLAGd33b7b0e9 [2024-05-12 10:55:30,395 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/890f083e8/7fc33a15366f402f910afc4819c5fbcd [2024-05-12 10:55:30,396 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-05-12 10:55:30,397 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-05-12 10:55:30,399 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-05-12 10:55:30,399 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-05-12 10:55:30,403 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-05-12 10:55:30,404 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 10:55:29" (1/2) ... [2024-05-12 10:55:30,405 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32e84454 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 10:55:30, skipping insertion in model container [2024-05-12 10:55:30,405 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 10:55:29" (1/2) ... [2024-05-12 10:55:30,408 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@e52c57 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 10:55:30, skipping insertion in model container [2024-05-12 10:55:30,408 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 10:55:30" (2/2) ... [2024-05-12 10:55:30,409 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32e84454 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:55:30, skipping insertion in model container [2024-05-12 10:55:30,409 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 10:55:30" (2/2) ... [2024-05-12 10:55:30,409 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-05-12 10:55:30,427 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-05-12 10:55:30,430 INFO L97 edCorrectnessWitness]: Location invariant before [L123-L123] ! multithreaded || ((((((((((((((((((((((((2147483648LL + (long long )N) + (long long )v_assert >= 0LL && (2147483648LL + (long long )N) + (long long )b1 >= 0LL) && (2147483648LL + (long long )N) + (long long )b2 >= 0LL) && (1LL - (long long )b1) + (long long )v_assert >= 0LL) && (1LL - (long long )b1) + (long long )b2 >= 0LL) && (1LL - (long long )b2) + (long long )v_assert >= 0LL) && (2147483647LL - (long long )N) + (long long )v_assert >= 0LL) && (2147483647LL - (long long )N) + (long long )b1 >= 0LL) && (2147483647LL - (long long )N) + (long long )b2 >= 0LL) && (long long )b1 + (long long )v_assert >= 0LL) && (long long )b1 + (long long )b2 >= 0LL) && (long long )b2 + (long long )v_assert >= 0LL) && (1LL + (long long )b1) - (long long )v_assert >= 0LL) && (1LL + (long long )b1) - (long long )b2 >= 0LL) && (1LL + (long long )b2) - (long long )v_assert >= 0LL) && (2147483649LL + (long long )N) - (long long )v_assert >= 0LL) && (2147483649LL + (long long )N) - (long long )b1 >= 0LL) && (2147483649LL + (long long )N) - (long long )b2 >= 0LL) && (2LL - (long long )b1) - (long long )v_assert >= 0LL) && (2LL - (long long )b1) - (long long )b2 >= 0LL) && (2LL - (long long )b2) - (long long )v_assert >= 0LL) && (2147483648LL - (long long )N) - (long long )v_assert >= 0LL) && (2147483648LL - (long long )N) - (long long )b1 >= 0LL) && (2147483648LL - (long long )N) - (long long )b2 >= 0LL) [2024-05-12 10:55:30,430 INFO L97 edCorrectnessWitness]: Location invariant before [L127-L127] ! multithreaded || ((((((((((((((((((((((((2147483648LL + (long long )N) + (long long )v_assert >= 0LL && (2147483648LL + (long long )N) + (long long )b1 >= 0LL) && (2147483648LL + (long long )N) + (long long )b2 >= 0LL) && (1LL - (long long )b1) + (long long )v_assert >= 0LL) && (1LL - (long long )b1) + (long long )b2 >= 0LL) && (1LL - (long long )b2) + (long long )v_assert >= 0LL) && (2147483647LL - (long long )N) + (long long )v_assert >= 0LL) && (2147483647LL - (long long )N) + (long long )b1 >= 0LL) && (2147483647LL - (long long )N) + (long long )b2 >= 0LL) && (long long )b1 + (long long )v_assert >= 0LL) && (long long )b1 + (long long )b2 >= 0LL) && (long long )b2 + (long long )v_assert >= 0LL) && (1LL + (long long )b1) - (long long )v_assert >= 0LL) && (1LL + (long long )b1) - (long long )b2 >= 0LL) && (1LL + (long long )b2) - (long long )v_assert >= 0LL) && (2147483649LL + (long long )N) - (long long )v_assert >= 0LL) && (2147483649LL + (long long )N) - (long long )b1 >= 0LL) && (2147483649LL + (long long )N) - (long long )b2 >= 0LL) && (2LL - (long long )b1) - (long long )v_assert >= 0LL) && (2LL - (long long )b1) - (long long )b2 >= 0LL) && (2LL - (long long )b2) - (long long )v_assert >= 0LL) && (2147483648LL - (long long )N) - (long long )v_assert >= 0LL) && (2147483648LL - (long long )N) - (long long )b1 >= 0LL) && (2147483648LL - (long long )N) - (long long )b2 >= 0LL) [2024-05-12 10:55:30,430 INFO L97 edCorrectnessWitness]: Location invariant before [L125-L125] ! multithreaded || ((((((((((((((((((((((((2147483648LL + (long long )N) + (long long )v_assert >= 0LL && (2147483648LL + (long long )N) + (long long )b1 >= 0LL) && (2147483648LL + (long long )N) + (long long )b2 >= 0LL) && (1LL - (long long )b1) + (long long )v_assert >= 0LL) && (1LL - (long long )b1) + (long long )b2 >= 0LL) && (1LL - (long long )b2) + (long long )v_assert >= 0LL) && (2147483647LL - (long long )N) + (long long )v_assert >= 0LL) && (2147483647LL - (long long )N) + (long long )b1 >= 0LL) && (2147483647LL - (long long )N) + (long long )b2 >= 0LL) && (long long )b1 + (long long )v_assert >= 0LL) && (long long )b1 + (long long )b2 >= 0LL) && (long long )b2 + (long long )v_assert >= 0LL) && (1LL + (long long )b1) - (long long )v_assert >= 0LL) && (1LL + (long long )b1) - (long long )b2 >= 0LL) && (1LL + (long long )b2) - (long long )v_assert >= 0LL) && (2147483649LL + (long long )N) - (long long )v_assert >= 0LL) && (2147483649LL + (long long )N) - (long long )b1 >= 0LL) && (2147483649LL + (long long )N) - (long long )b2 >= 0LL) && (2LL - (long long )b1) - (long long )v_assert >= 0LL) && (2LL - (long long )b1) - (long long )b2 >= 0LL) && (2LL - (long long )b2) - (long long )v_assert >= 0LL) && (2147483648LL - (long long )N) - (long long )v_assert >= 0LL) && (2147483648LL - (long long )N) - (long long )b1 >= 0LL) && (2147483648LL - (long long )N) - (long long )b2 >= 0LL) [2024-05-12 10:55:30,430 INFO L97 edCorrectnessWitness]: Location invariant before [L124-L124] ! multithreaded || ((((((((((((((((((((((((2147483648LL + (long long )N) + (long long )v_assert >= 0LL && (2147483648LL + (long long )N) + (long long )b1 >= 0LL) && (2147483648LL + (long long )N) + (long long )b2 >= 0LL) && (1LL - (long long )b1) + (long long )v_assert >= 0LL) && (1LL - (long long )b1) + (long long )b2 >= 0LL) && (1LL - (long long )b2) + (long long )v_assert >= 0LL) && (2147483647LL - (long long )N) + (long long )v_assert >= 0LL) && (2147483647LL - (long long )N) + (long long )b1 >= 0LL) && (2147483647LL - (long long )N) + (long long )b2 >= 0LL) && (long long )b1 + (long long )v_assert >= 0LL) && (long long )b1 + (long long )b2 >= 0LL) && (long long )b2 + (long long )v_assert >= 0LL) && (1LL + (long long )b1) - (long long )v_assert >= 0LL) && (1LL + (long long )b1) - (long long )b2 >= 0LL) && (1LL + (long long )b2) - (long long )v_assert >= 0LL) && (2147483649LL + (long long )N) - (long long )v_assert >= 0LL) && (2147483649LL + (long long )N) - (long long )b1 >= 0LL) && (2147483649LL + (long long )N) - (long long )b2 >= 0LL) && (2LL - (long long )b1) - (long long )v_assert >= 0LL) && (2LL - (long long )b1) - (long long )b2 >= 0LL) && (2LL - (long long )b2) - (long long )v_assert >= 0LL) && (2147483648LL - (long long )N) - (long long )v_assert >= 0LL) && (2147483648LL - (long long )N) - (long long )b1 >= 0LL) && (2147483648LL - (long long )N) - (long long )b2 >= 0LL) [2024-05-12 10:55:30,430 INFO L97 edCorrectnessWitness]: Location invariant before [L126-L126] ! multithreaded || ((((((((((((((((((((((((2147483648LL + (long long )N) + (long long )v_assert >= 0LL && (2147483648LL + (long long )N) + (long long )b1 >= 0LL) && (2147483648LL + (long long )N) + (long long )b2 >= 0LL) && (1LL - (long long )b1) + (long long )v_assert >= 0LL) && (1LL - (long long )b1) + (long long )b2 >= 0LL) && (1LL - (long long )b2) + (long long )v_assert >= 0LL) && (2147483647LL - (long long )N) + (long long )v_assert >= 0LL) && (2147483647LL - (long long )N) + (long long )b1 >= 0LL) && (2147483647LL - (long long )N) + (long long )b2 >= 0LL) && (long long )b1 + (long long )v_assert >= 0LL) && (long long )b1 + (long long )b2 >= 0LL) && (long long )b2 + (long long )v_assert >= 0LL) && (1LL + (long long )b1) - (long long )v_assert >= 0LL) && (1LL + (long long )b1) - (long long )b2 >= 0LL) && (1LL + (long long )b2) - (long long )v_assert >= 0LL) && (2147483649LL + (long long )N) - (long long )v_assert >= 0LL) && (2147483649LL + (long long )N) - (long long )b1 >= 0LL) && (2147483649LL + (long long )N) - (long long )b2 >= 0LL) && (2LL - (long long )b1) - (long long )v_assert >= 0LL) && (2LL - (long long )b1) - (long long )b2 >= 0LL) && (2LL - (long long )b2) - (long long )v_assert >= 0LL) && (2147483648LL - (long long )N) - (long long )v_assert >= 0LL) && (2147483648LL - (long long )N) - (long long )b1 >= 0LL) && (2147483648LL - (long long )N) - (long long )b2 >= 0LL) [2024-05-12 10:55:30,430 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-05-12 10:55:30,431 INFO L106 edCorrectnessWitness]: ghost_update [L122-L122] multithreaded = 1; [2024-05-12 10:55:30,450 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-05-12 10:55:30,594 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-min-max-inc-dec.wvr.c[3271,3284] [2024-05-12 10:55:30,600 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 10:55:30,605 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-05-12 10:55:30,694 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-min-max-inc-dec.wvr.c[3271,3284] [2024-05-12 10:55:30,700 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 10:55:30,720 INFO L206 MainTranslator]: Completed translation [2024-05-12 10:55:30,720 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:55:30 WrapperNode [2024-05-12 10:55:30,720 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-05-12 10:55:30,721 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-05-12 10:55:30,721 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-05-12 10:55:30,721 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-05-12 10:55:30,727 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:55:30" (1/1) ... [2024-05-12 10:55:30,747 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:55:30" (1/1) ... [2024-05-12 10:55:30,786 INFO L138 Inliner]: procedures = 27, calls = 75, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 186 [2024-05-12 10:55:30,788 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-05-12 10:55:30,789 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-05-12 10:55:30,789 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-05-12 10:55:30,789 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-05-12 10:55:30,797 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:55:30" (1/1) ... [2024-05-12 10:55:30,797 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:55:30" (1/1) ... [2024-05-12 10:55:30,823 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:55:30" (1/1) ... [2024-05-12 10:55:30,838 INFO L175 MemorySlicer]: Split 25 memory accesses to 7 slices as follows [2, 13, 2, 2, 2, 2, 2]. 52 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0, 0]. The 8 writes are split as follows [0, 3, 1, 1, 1, 1, 1]. [2024-05-12 10:55:30,838 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:55:30" (1/1) ... [2024-05-12 10:55:30,838 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:55:30" (1/1) ... [2024-05-12 10:55:30,847 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:55:30" (1/1) ... [2024-05-12 10:55:30,849 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:55:30" (1/1) ... [2024-05-12 10:55:30,852 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:55:30" (1/1) ... [2024-05-12 10:55:30,854 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:55:30" (1/1) ... [2024-05-12 10:55:30,858 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-05-12 10:55:30,859 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-05-12 10:55:30,859 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-05-12 10:55:30,859 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-05-12 10:55:30,859 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:55:30" (1/1) ... [2024-05-12 10:55:30,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 10:55:30,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 10:55:30,891 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) [2024-05-12 10:55:30,906 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 [2024-05-12 10:55:30,918 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-05-12 10:55:30,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-05-12 10:55:30,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-05-12 10:55:30,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-05-12 10:55:30,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-05-12 10:55:30,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-05-12 10:55:30,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-05-12 10:55:30,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-05-12 10:55:30,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-05-12 10:55:30,920 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-05-12 10:55:30,921 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-05-12 10:55:30,921 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-05-12 10:55:30,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-05-12 10:55:30,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-05-12 10:55:30,923 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-05-12 10:55:30,923 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-05-12 10:55:30,923 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-05-12 10:55:30,923 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-05-12 10:55:30,924 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-05-12 10:55:30,924 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-05-12 10:55:30,924 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-05-12 10:55:30,924 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-05-12 10:55:30,924 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-05-12 10:55:30,925 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-05-12 10:55:30,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-05-12 10:55:30,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-05-12 10:55:30,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-05-12 10:55:30,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-05-12 10:55:30,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-05-12 10:55:30,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-05-12 10:55:30,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-05-12 10:55:30,926 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2024-05-12 10:55:30,926 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2024-05-12 10:55:30,926 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-05-12 10:55:30,926 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-05-12 10:55:30,926 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-05-12 10:55:30,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-05-12 10:55:30,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-05-12 10:55:30,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-05-12 10:55:30,928 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-05-12 10:55:31,014 INFO L244 CfgBuilder]: Building ICFG [2024-05-12 10:55:31,016 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-05-12 10:55:31,376 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-05-12 10:55:31,376 INFO L293 CfgBuilder]: Performing block encoding [2024-05-12 10:55:31,609 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-05-12 10:55:31,610 INFO L320 CfgBuilder]: Removed 5 assume(true) statements. [2024-05-12 10:55:31,610 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 10:55:31 BoogieIcfgContainer [2024-05-12 10:55:31,610 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-05-12 10:55:31,612 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-05-12 10:55:31,613 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-05-12 10:55:31,615 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-05-12 10:55:31,615 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 10:55:29" (1/4) ... [2024-05-12 10:55:31,616 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b9dc772 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 10:55:31, skipping insertion in model container [2024-05-12 10:55:31,616 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.05 10:55:30" (2/4) ... [2024-05-12 10:55:31,618 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b9dc772 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 10:55:31, skipping insertion in model container [2024-05-12 10:55:31,618 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:55:30" (3/4) ... [2024-05-12 10:55:31,618 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b9dc772 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 10:55:31, skipping insertion in model container [2024-05-12 10:55:31,618 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 10:55:31" (4/4) ... [2024-05-12 10:55:31,619 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-min-max-inc-dec.wvr.c [2024-05-12 10:55:31,635 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-05-12 10:55:31,636 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-05-12 10:55:31,636 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-05-12 10:55:31,687 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2024-05-12 10:55:31,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 68 transitions, 171 flow [2024-05-12 10:55:31,756 INFO L124 PetriNetUnfolderBase]: 5/63 cut-off events. [2024-05-12 10:55:31,757 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-05-12 10:55:31,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 63 events. 5/63 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 91 event pairs, 0 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2024-05-12 10:55:31,761 INFO L82 GeneralOperation]: Start removeDead. Operand has 79 places, 68 transitions, 171 flow [2024-05-12 10:55:31,765 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 73 places, 62 transitions, 154 flow [2024-05-12 10:55:31,778 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-05-12 10:55:31,789 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;@bf2a9d5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-12 10:55:31,789 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-05-12 10:55:31,795 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-05-12 10:55:31,795 INFO L124 PetriNetUnfolderBase]: 1/8 cut-off events. [2024-05-12 10:55:31,795 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 10:55:31,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:55:31,797 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:55:31,797 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 10:55:31,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:55:31,801 INFO L85 PathProgramCache]: Analyzing trace with hash 23265388, now seen corresponding path program 1 times [2024-05-12 10:55:31,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:55:31,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949158905] [2024-05-12 10:55:31,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:55:31,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:55:31,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:55:32,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:55:32,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:55:32,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949158905] [2024-05-12 10:55:32,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949158905] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:55:32,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:55:32,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-05-12 10:55:32,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870317920] [2024-05-12 10:55:32,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:55:32,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 10:55:32,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:55:32,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 10:55:32,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 10:55:32,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 68 [2024-05-12 10:55:32,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 62 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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) [2024-05-12 10:55:32,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:55:32,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 68 [2024-05-12 10:55:32,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:55:34,511 INFO L124 PetriNetUnfolderBase]: 20479/27128 cut-off events. [2024-05-12 10:55:34,512 INFO L125 PetriNetUnfolderBase]: For 353/353 co-relation queries the response was YES. [2024-05-12 10:55:34,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53191 conditions, 27128 events. 20479/27128 cut-off events. For 353/353 co-relation queries the response was YES. Maximal size of possible extension queue 1226. Compared 158455 event pairs, 13143 based on Foata normal form. 0/26480 useless extension candidates. Maximal degree in co-relation 49020. Up to 24791 conditions per place. [2024-05-12 10:55:34,676 INFO L140 encePairwiseOnDemand]: 65/68 looper letters, 44 selfloop transitions, 2 changer transitions 0/63 dead transitions. [2024-05-12 10:55:34,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 63 transitions, 248 flow [2024-05-12 10:55:34,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 10:55:34,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 10:55:34,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 113 transitions. [2024-05-12 10:55:34,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.553921568627451 [2024-05-12 10:55:34,687 INFO L175 Difference]: Start difference. First operand has 73 places, 62 transitions, 154 flow. Second operand 3 states and 113 transitions. [2024-05-12 10:55:34,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 63 transitions, 248 flow [2024-05-12 10:55:34,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 63 transitions, 228 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-05-12 10:55:34,769 INFO L231 Difference]: Finished difference. Result has 66 places, 63 transitions, 146 flow [2024-05-12 10:55:34,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=146, PETRI_PLACES=66, PETRI_TRANSITIONS=63} [2024-05-12 10:55:34,773 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -7 predicate places. [2024-05-12 10:55:34,774 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 63 transitions, 146 flow [2024-05-12 10:55:34,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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) [2024-05-12 10:55:34,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:55:34,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:55:34,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-05-12 10:55:34,775 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 10:55:34,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:55:34,775 INFO L85 PathProgramCache]: Analyzing trace with hash -331232364, now seen corresponding path program 1 times [2024-05-12 10:55:34,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:55:34,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786943552] [2024-05-12 10:55:34,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:55:34,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:55:34,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:55:35,162 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:55:35,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:55:35,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786943552] [2024-05-12 10:55:35,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786943552] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-12 10:55:35,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431966881] [2024-05-12 10:55:35,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:55:35,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 10:55:35,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 10:55:35,165 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-05-12 10:55:35,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-05-12 10:55:35,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:55:35,257 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 14 conjunts are in the unsatisfiable core [2024-05-12 10:55:35,260 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 10:55:35,398 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:55:35,399 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-05-12 10:55:35,759 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:55:35,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431966881] provided 0 perfect and 2 imperfect interpolant sequences [2024-05-12 10:55:35,759 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-05-12 10:55:35,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 8 [2024-05-12 10:55:35,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74659289] [2024-05-12 10:55:35,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-05-12 10:55:35,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 10:55:35,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:55:35,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 10:55:35,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2024-05-12 10:55:35,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 68 [2024-05-12 10:55:35,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 63 transitions, 146 flow. Second operand has 10 states, 10 states have (on average 15.9) internal successors, (159), 10 states have internal predecessors, (159), 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) [2024-05-12 10:55:35,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:55:35,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 68 [2024-05-12 10:55:35,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:55:38,814 INFO L124 PetriNetUnfolderBase]: 37499/47985 cut-off events. [2024-05-12 10:55:38,814 INFO L125 PetriNetUnfolderBase]: For 240/240 co-relation queries the response was YES. [2024-05-12 10:55:38,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94046 conditions, 47985 events. 37499/47985 cut-off events. For 240/240 co-relation queries the response was YES. Maximal size of possible extension queue 1708. Compared 266027 event pairs, 7232 based on Foata normal form. 0/47081 useless extension candidates. Maximal degree in co-relation 94035. Up to 43565 conditions per place. [2024-05-12 10:55:39,048 INFO L140 encePairwiseOnDemand]: 57/68 looper letters, 72 selfloop transitions, 7 changer transitions 0/88 dead transitions. [2024-05-12 10:55:39,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 88 transitions, 363 flow [2024-05-12 10:55:39,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 10:55:39,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 10:55:39,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 173 transitions. [2024-05-12 10:55:39,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42401960784313725 [2024-05-12 10:55:39,050 INFO L175 Difference]: Start difference. First operand has 66 places, 63 transitions, 146 flow. Second operand 6 states and 173 transitions. [2024-05-12 10:55:39,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 88 transitions, 363 flow [2024-05-12 10:55:39,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 88 transitions, 359 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-05-12 10:55:39,053 INFO L231 Difference]: Finished difference. Result has 67 places, 63 transitions, 177 flow [2024-05-12 10:55:39,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=177, PETRI_PLACES=67, PETRI_TRANSITIONS=63} [2024-05-12 10:55:39,054 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -6 predicate places. [2024-05-12 10:55:39,054 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 63 transitions, 177 flow [2024-05-12 10:55:39,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.9) internal successors, (159), 10 states have internal predecessors, (159), 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) [2024-05-12 10:55:39,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:55:39,054 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:55:39,068 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-05-12 10:55:39,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 10:55:39,267 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 10:55:39,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:55:39,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1187015082, now seen corresponding path program 1 times [2024-05-12 10:55:39,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:55:39,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696401809] [2024-05-12 10:55:39,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:55:39,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:55:39,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:55:39,384 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-05-12 10:55:39,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:55:39,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696401809] [2024-05-12 10:55:39,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696401809] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:55:39,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:55:39,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 10:55:39,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534700314] [2024-05-12 10:55:39,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:55:39,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 10:55:39,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:55:39,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 10:55:39,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-05-12 10:55:39,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 68 [2024-05-12 10:55:39,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 63 transitions, 177 flow. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:55:39,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:55:39,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 68 [2024-05-12 10:55:39,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:55:42,501 INFO L124 PetriNetUnfolderBase]: 39777/52120 cut-off events. [2024-05-12 10:55:42,501 INFO L125 PetriNetUnfolderBase]: For 177/177 co-relation queries the response was YES. [2024-05-12 10:55:42,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102410 conditions, 52120 events. 39777/52120 cut-off events. For 177/177 co-relation queries the response was YES. Maximal size of possible extension queue 2117. Compared 317188 event pairs, 17788 based on Foata normal form. 1520/51616 useless extension candidates. Maximal degree in co-relation 96858. Up to 32271 conditions per place. [2024-05-12 10:55:42,801 INFO L140 encePairwiseOnDemand]: 64/68 looper letters, 72 selfloop transitions, 3 changer transitions 0/89 dead transitions. [2024-05-12 10:55:42,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 89 transitions, 383 flow [2024-05-12 10:55:42,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 10:55:42,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 10:55:42,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 157 transitions. [2024-05-12 10:55:42,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5772058823529411 [2024-05-12 10:55:42,806 INFO L175 Difference]: Start difference. First operand has 67 places, 63 transitions, 177 flow. Second operand 4 states and 157 transitions. [2024-05-12 10:55:42,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 89 transitions, 383 flow [2024-05-12 10:55:42,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 89 transitions, 374 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-05-12 10:55:42,810 INFO L231 Difference]: Finished difference. Result has 69 places, 64 transitions, 182 flow [2024-05-12 10:55:42,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=182, PETRI_PLACES=69, PETRI_TRANSITIONS=64} [2024-05-12 10:55:42,811 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -4 predicate places. [2024-05-12 10:55:42,811 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 64 transitions, 182 flow [2024-05-12 10:55:42,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:55:42,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:55:42,812 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:55:42,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-05-12 10:55:42,812 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 10:55:42,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:55:42,813 INFO L85 PathProgramCache]: Analyzing trace with hash 758233550, now seen corresponding path program 1 times [2024-05-12 10:55:42,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:55:42,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231690767] [2024-05-12 10:55:42,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:55:42,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:55:42,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:55:42,913 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-05-12 10:55:42,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:55:42,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231690767] [2024-05-12 10:55:42,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231690767] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:55:42,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:55:42,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 10:55:42,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482069869] [2024-05-12 10:55:42,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:55:42,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 10:55:42,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:55:42,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 10:55:42,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-05-12 10:55:42,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 68 [2024-05-12 10:55:42,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 64 transitions, 182 flow. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 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) [2024-05-12 10:55:42,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:55:42,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 68 [2024-05-12 10:55:42,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:55:46,419 INFO L124 PetriNetUnfolderBase]: 42552/55853 cut-off events. [2024-05-12 10:55:46,420 INFO L125 PetriNetUnfolderBase]: For 5562/7478 co-relation queries the response was YES. [2024-05-12 10:55:46,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117793 conditions, 55853 events. 42552/55853 cut-off events. For 5562/7478 co-relation queries the response was YES. Maximal size of possible extension queue 2166. Compared 342819 event pairs, 22715 based on Foata normal form. 3089/56815 useless extension candidates. Maximal degree in co-relation 112694. Up to 39374 conditions per place. [2024-05-12 10:55:46,732 INFO L140 encePairwiseOnDemand]: 64/68 looper letters, 75 selfloop transitions, 3 changer transitions 0/92 dead transitions. [2024-05-12 10:55:46,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 92 transitions, 405 flow [2024-05-12 10:55:46,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 10:55:46,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 10:55:46,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 158 transitions. [2024-05-12 10:55:46,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5808823529411765 [2024-05-12 10:55:46,733 INFO L175 Difference]: Start difference. First operand has 69 places, 64 transitions, 182 flow. Second operand 4 states and 158 transitions. [2024-05-12 10:55:46,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 92 transitions, 405 flow [2024-05-12 10:55:46,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 92 transitions, 400 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-05-12 10:55:46,736 INFO L231 Difference]: Finished difference. Result has 71 places, 65 transitions, 192 flow [2024-05-12 10:55:46,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=192, PETRI_PLACES=71, PETRI_TRANSITIONS=65} [2024-05-12 10:55:46,737 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -2 predicate places. [2024-05-12 10:55:46,737 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 65 transitions, 192 flow [2024-05-12 10:55:46,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 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) [2024-05-12 10:55:46,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:55:46,737 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:55:46,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-05-12 10:55:46,738 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 10:55:46,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:55:46,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1924465048, now seen corresponding path program 1 times [2024-05-12 10:55:46,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:55:46,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578964261] [2024-05-12 10:55:46,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:55:46,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:55:46,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:55:46,812 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-05-12 10:55:46,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:55:46,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578964261] [2024-05-12 10:55:46,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578964261] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:55:46,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:55:46,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 10:55:46,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513758102] [2024-05-12 10:55:46,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:55:46,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 10:55:46,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:55:46,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 10:55:46,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-05-12 10:55:46,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 68 [2024-05-12 10:55:46,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 65 transitions, 192 flow. Second operand has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 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) [2024-05-12 10:55:46,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:55:46,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 68 [2024-05-12 10:55:46,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:55:51,169 INFO L124 PetriNetUnfolderBase]: 52279/68695 cut-off events. [2024-05-12 10:55:51,170 INFO L125 PetriNetUnfolderBase]: For 12316/16509 co-relation queries the response was YES. [2024-05-12 10:55:51,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150256 conditions, 68695 events. 52279/68695 cut-off events. For 12316/16509 co-relation queries the response was YES. Maximal size of possible extension queue 2522. Compared 432171 event pairs, 26801 based on Foata normal form. 6249/72565 useless extension candidates. Maximal degree in co-relation 143352. Up to 43879 conditions per place. [2024-05-12 10:55:51,592 INFO L140 encePairwiseOnDemand]: 64/68 looper letters, 75 selfloop transitions, 3 changer transitions 0/92 dead transitions. [2024-05-12 10:55:51,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 92 transitions, 419 flow [2024-05-12 10:55:51,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 10:55:51,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 10:55:51,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 156 transitions. [2024-05-12 10:55:51,594 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5735294117647058 [2024-05-12 10:55:51,594 INFO L175 Difference]: Start difference. First operand has 71 places, 65 transitions, 192 flow. Second operand 4 states and 156 transitions. [2024-05-12 10:55:51,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 92 transitions, 419 flow [2024-05-12 10:55:51,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 92 transitions, 414 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-05-12 10:55:51,598 INFO L231 Difference]: Finished difference. Result has 73 places, 66 transitions, 202 flow [2024-05-12 10:55:51,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=202, PETRI_PLACES=73, PETRI_TRANSITIONS=66} [2024-05-12 10:55:51,599 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 0 predicate places. [2024-05-12 10:55:51,599 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 66 transitions, 202 flow [2024-05-12 10:55:51,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 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) [2024-05-12 10:55:51,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:55:51,599 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:55:51,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-05-12 10:55:51,600 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 10:55:51,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:55:51,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1621927293, now seen corresponding path program 1 times [2024-05-12 10:55:51,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:55:51,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487559157] [2024-05-12 10:55:51,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:55:51,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:55:51,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:55:51,697 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-05-12 10:55:51,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:55:51,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487559157] [2024-05-12 10:55:51,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487559157] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:55:51,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:55:51,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 10:55:51,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731382155] [2024-05-12 10:55:51,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:55:51,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 10:55:51,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:55:51,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 10:55:51,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-05-12 10:55:51,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 68 [2024-05-12 10:55:51,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 66 transitions, 202 flow. Second operand has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 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) [2024-05-12 10:55:51,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:55:51,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 68 [2024-05-12 10:55:51,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:55:56,713 INFO L124 PetriNetUnfolderBase]: 58925/78622 cut-off events. [2024-05-12 10:55:56,713 INFO L125 PetriNetUnfolderBase]: For 21264/29103 co-relation queries the response was YES. [2024-05-12 10:55:57,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181957 conditions, 78622 events. 58925/78622 cut-off events. For 21264/29103 co-relation queries the response was YES. Maximal size of possible extension queue 2573. Compared 502785 event pairs, 33983 based on Foata normal form. 10065/87282 useless extension candidates. Maximal degree in co-relation 175644. Up to 52657 conditions per place. [2024-05-12 10:55:57,399 INFO L140 encePairwiseOnDemand]: 64/68 looper letters, 78 selfloop transitions, 3 changer transitions 0/95 dead transitions. [2024-05-12 10:55:57,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 95 transitions, 445 flow [2024-05-12 10:55:57,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 10:55:57,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 10:55:57,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 157 transitions. [2024-05-12 10:55:57,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5772058823529411 [2024-05-12 10:55:57,401 INFO L175 Difference]: Start difference. First operand has 73 places, 66 transitions, 202 flow. Second operand 4 states and 157 transitions. [2024-05-12 10:55:57,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 95 transitions, 445 flow [2024-05-12 10:55:57,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 95 transitions, 440 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-05-12 10:55:57,406 INFO L231 Difference]: Finished difference. Result has 75 places, 67 transitions, 212 flow [2024-05-12 10:55:57,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=212, PETRI_PLACES=75, PETRI_TRANSITIONS=67} [2024-05-12 10:55:57,407 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 2 predicate places. [2024-05-12 10:55:57,407 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 67 transitions, 212 flow [2024-05-12 10:55:57,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 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) [2024-05-12 10:55:57,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:55:57,408 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:55:57,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-05-12 10:55:57,408 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 10:55:57,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:55:57,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1614911662, now seen corresponding path program 1 times [2024-05-12 10:55:57,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:55:57,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143345699] [2024-05-12 10:55:57,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:55:57,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:55:57,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:55:57,763 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-05-12 10:55:57,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:55:57,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143345699] [2024-05-12 10:55:57,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143345699] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-12 10:55:57,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179330819] [2024-05-12 10:55:57,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:55:57,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 10:55:57,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 10:55:57,768 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-05-12 10:55:57,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-05-12 10:55:57,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:55:57,906 INFO L262 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 22 conjunts are in the unsatisfiable core [2024-05-12 10:55:57,908 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 10:55:57,936 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-05-12 10:55:58,005 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-05-12 10:55:58,050 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-05-12 10:55:58,050 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-05-12 10:55:58,232 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-05-12 10:55:58,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1179330819] provided 0 perfect and 2 imperfect interpolant sequences [2024-05-12 10:55:58,233 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-05-12 10:55:58,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 6] total 17 [2024-05-12 10:55:58,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108468695] [2024-05-12 10:55:58,233 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-05-12 10:55:58,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-05-12 10:55:58,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:55:58,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-05-12 10:55:58,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2024-05-12 10:55:58,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 68 [2024-05-12 10:55:58,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 67 transitions, 212 flow. Second operand has 17 states, 17 states have (on average 27.11764705882353) internal successors, (461), 17 states have internal predecessors, (461), 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) [2024-05-12 10:55:58,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:55:58,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 68 [2024-05-12 10:55:58,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand