./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/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/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 654ba073723c5bebcf706552b3cd58bc95cc07bc71a7e60391f80a16de89dbcb --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 21:14:59,331 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 21:14:59,333 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 21:14:59,359 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 21:14:59,360 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 21:14:59,361 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 21:14:59,362 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 21:14:59,364 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 21:14:59,365 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 21:14:59,366 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 21:14:59,367 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 21:14:59,367 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 21:14:59,368 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 21:14:59,369 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 21:14:59,370 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 21:14:59,373 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 21:14:59,373 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 21:14:59,375 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 21:14:59,378 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 21:14:59,386 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 21:14:59,388 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 21:14:59,389 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 21:14:59,389 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 21:14:59,390 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 21:14:59,391 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 21:14:59,393 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 21:14:59,404 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 21:14:59,404 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 21:14:59,405 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 21:14:59,405 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 21:14:59,406 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 21:14:59,406 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 21:14:59,406 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 21:14:59,407 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 21:14:59,408 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 21:14:59,408 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 21:14:59,409 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 21:14:59,409 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 21:14:59,409 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 21:14:59,410 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 21:14:59,410 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 21:14:59,414 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 21:14:59,415 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 21:14:59,447 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 21:14:59,448 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 21:14:59,449 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 21:14:59,449 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 21:14:59,451 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 21:14:59,451 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 21:14:59,452 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 21:14:59,452 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 21:14:59,452 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 21:14:59,453 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 21:14:59,453 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 21:14:59,453 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 21:14:59,453 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 21:14:59,454 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 21:14:59,454 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 21:14:59,454 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 21:14:59,454 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 21:14:59,454 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 21:14:59,454 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 21:14:59,455 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 21:14:59,455 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 21:14:59,455 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 21:14:59,455 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 21:14:59,455 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 21:14:59,456 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:14:59,456 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 21:14:59,456 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 21:14:59,456 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 21:14:59,457 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 21:14:59,457 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 21:14:59,457 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 21:14:59,457 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 21:14:59,458 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 21:14:59,458 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 654ba073723c5bebcf706552b3cd58bc95cc07bc71a7e60391f80a16de89dbcb [2022-07-19 21:14:59,655 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 21:14:59,676 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 21:14:59,679 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 21:14:59,681 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 21:14:59,681 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 21:14:59,682 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i [2022-07-19 21:14:59,732 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/431c5bfd5/3402b32e6294409cb7e9fcf305aff075/FLAG7a5398f4f [2022-07-19 21:15:00,188 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 21:15:00,189 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i [2022-07-19 21:15:00,204 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/431c5bfd5/3402b32e6294409cb7e9fcf305aff075/FLAG7a5398f4f [2022-07-19 21:15:00,228 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/431c5bfd5/3402b32e6294409cb7e9fcf305aff075 [2022-07-19 21:15:00,230 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 21:15:00,231 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 21:15:00,232 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 21:15:00,234 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 21:15:00,236 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 21:15:00,237 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:15:00" (1/1) ... [2022-07-19 21:15:00,238 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a502df0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:15:00, skipping insertion in model container [2022-07-19 21:15:00,238 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:15:00" (1/1) ... [2022-07-19 21:15:00,244 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 21:15:00,288 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 21:15:00,399 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-07-19 21:15:00,520 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[30448,30461] [2022-07-19 21:15:00,531 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[30811,30824] [2022-07-19 21:15:00,540 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[31483,31496] [2022-07-19 21:15:00,541 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[31534,31547] [2022-07-19 21:15:00,545 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[31683,31696] [2022-07-19 21:15:00,547 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[31760,31773] [2022-07-19 21:15:00,549 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[31807,31820] [2022-07-19 21:15:00,550 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[31916,31929] [2022-07-19 21:15:00,551 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[32035,32048] [2022-07-19 21:15:00,552 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[32083,32096] [2022-07-19 21:15:00,553 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[32160,32173] [2022-07-19 21:15:00,556 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[32286,32299] [2022-07-19 21:15:00,568 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[32897,32910] [2022-07-19 21:15:00,570 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[32974,32987] [2022-07-19 21:15:00,571 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:15:00,583 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 21:15:00,607 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-07-19 21:15:00,638 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[30448,30461] [2022-07-19 21:15:00,643 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[30811,30824] [2022-07-19 21:15:00,652 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[31483,31496] [2022-07-19 21:15:00,653 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[31534,31547] [2022-07-19 21:15:00,656 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[31683,31696] [2022-07-19 21:15:00,658 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[31760,31773] [2022-07-19 21:15:00,659 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[31807,31820] [2022-07-19 21:15:00,660 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[31916,31929] [2022-07-19 21:15:00,662 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[32035,32048] [2022-07-19 21:15:00,663 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[32083,32096] [2022-07-19 21:15:00,672 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[32160,32173] [2022-07-19 21:15:00,674 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[32286,32299] [2022-07-19 21:15:00,680 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[32897,32910] [2022-07-19 21:15:00,687 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[32974,32987] [2022-07-19 21:15:00,690 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:15:00,723 INFO L208 MainTranslator]: Completed translation [2022-07-19 21:15:00,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:15:00 WrapperNode [2022-07-19 21:15:00,723 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 21:15:00,724 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 21:15:00,724 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 21:15:00,724 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 21:15:00,731 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:15:00" (1/1) ... [2022-07-19 21:15:00,746 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:15:00" (1/1) ... [2022-07-19 21:15:00,784 INFO L137 Inliner]: procedures = 174, calls = 73, calls flagged for inlining = 7, calls inlined = 9, statements flattened = 469 [2022-07-19 21:15:00,785 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 21:15:00,785 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 21:15:00,785 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 21:15:00,786 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 21:15:00,793 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:15:00" (1/1) ... [2022-07-19 21:15:00,793 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:15:00" (1/1) ... [2022-07-19 21:15:00,802 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:15:00" (1/1) ... [2022-07-19 21:15:00,803 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:15:00" (1/1) ... [2022-07-19 21:15:00,823 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:15:00" (1/1) ... [2022-07-19 21:15:00,840 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:15:00" (1/1) ... [2022-07-19 21:15:00,844 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:15:00" (1/1) ... [2022-07-19 21:15:00,848 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 21:15:00,849 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 21:15:00,849 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 21:15:00,849 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 21:15:00,850 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:15:00" (1/1) ... [2022-07-19 21:15:00,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:15:00,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:15:00,879 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 21:15:00,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 21:15:00,907 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 21:15:00,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 21:15:00,907 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-07-19 21:15:00,908 INFO L130 BoogieDeclarations]: Found specification of procedure worker_fn [2022-07-19 21:15:00,908 INFO L138 BoogieDeclarations]: Found implementation of procedure worker_fn [2022-07-19 21:15:00,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 21:15:00,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-19 21:15:00,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 21:15:00,908 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-19 21:15:00,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 21:15:00,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 21:15:00,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 21:15:00,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 21:15:00,911 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-19 21:15:01,025 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 21:15:01,026 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 21:15:01,656 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 21:15:01,672 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 21:15:01,673 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2022-07-19 21:15:01,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:15:01 BoogieIcfgContainer [2022-07-19 21:15:01,676 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 21:15:01,679 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 21:15:01,679 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 21:15:01,682 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 21:15:01,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:15:00" (1/3) ... [2022-07-19 21:15:01,682 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7037e6f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:15:01, skipping insertion in model container [2022-07-19 21:15:01,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:15:00" (2/3) ... [2022-07-19 21:15:01,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7037e6f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:15:01, skipping insertion in model container [2022-07-19 21:15:01,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:15:01" (3/3) ... [2022-07-19 21:15:01,685 INFO L111 eAbstractionObserver]: Analyzing ICFG one_time_barrier_twice_2t.i [2022-07-19 21:15:01,689 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-19 21:15:01,696 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 21:15:01,696 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2022-07-19 21:15:01,696 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-19 21:15:01,824 INFO L135 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-07-19 21:15:01,882 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 482 places, 542 transitions, 1092 flow [2022-07-19 21:15:02,156 INFO L129 PetriNetUnfolder]: 95/795 cut-off events. [2022-07-19 21:15:02,157 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-07-19 21:15:02,170 INFO L84 FinitePrefix]: Finished finitePrefix Result has 801 conditions, 795 events. 95/795 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2663 event pairs, 0 based on Foata normal form. 0/655 useless extension candidates. Maximal degree in co-relation 462. Up to 4 conditions per place. [2022-07-19 21:15:02,170 INFO L82 GeneralOperation]: Start removeDead. Operand has 482 places, 542 transitions, 1092 flow [2022-07-19 21:15:02,187 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 482 places, 542 transitions, 1092 flow [2022-07-19 21:15:02,205 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:15:02,212 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@13b8bd31, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2db8e84 [2022-07-19 21:15:02,212 INFO L358 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2022-07-19 21:15:02,218 INFO L129 PetriNetUnfolder]: 3/53 cut-off events. [2022-07-19 21:15:02,219 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-19 21:15:02,219 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:15:02,220 INFO L200 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] [2022-07-19 21:15:02,220 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 38 more)] === [2022-07-19 21:15:02,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:15:02,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1884340507, now seen corresponding path program 1 times [2022-07-19 21:15:02,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:15:02,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543959218] [2022-07-19 21:15:02,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:15:02,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:15:02,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:15:02,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:15:02,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:15:02,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543959218] [2022-07-19 21:15:02,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543959218] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:15:02,493 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:15:02,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:15:02,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267342657] [2022-07-19 21:15:02,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:15:02,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:15:02,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:15:02,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:15:02,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:15:02,547 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 487 out of 542 [2022-07-19 21:15:02,554 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 482 places, 542 transitions, 1092 flow. Second operand has 3 states, 3 states have (on average 488.0) internal successors, (1464), 3 states have internal predecessors, (1464), 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) [2022-07-19 21:15:02,554 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:15:02,554 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 487 of 542 [2022-07-19 21:15:02,556 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:15:02,761 INFO L129 PetriNetUnfolder]: 28/734 cut-off events. [2022-07-19 21:15:02,761 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-07-19 21:15:02,772 INFO L84 FinitePrefix]: Finished finitePrefix Result has 758 conditions, 734 events. 28/734 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2572 event pairs, 0 based on Foata normal form. 66/727 useless extension candidates. Maximal degree in co-relation 423. Up to 12 conditions per place. [2022-07-19 21:15:02,778 INFO L132 encePairwiseOnDemand]: 495/542 looper letters, 15 selfloop transitions, 2 changer transitions 0/504 dead transitions. [2022-07-19 21:15:02,778 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 484 places, 504 transitions, 1050 flow [2022-07-19 21:15:02,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:15:02,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:15:02,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1524 transitions. [2022-07-19 21:15:02,807 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9372693726937269 [2022-07-19 21:15:02,808 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1524 transitions. [2022-07-19 21:15:02,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1524 transitions. [2022-07-19 21:15:02,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:15:02,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1524 transitions. [2022-07-19 21:15:02,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 508.0) internal successors, (1524), 3 states have internal predecessors, (1524), 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) [2022-07-19 21:15:02,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 542.0) internal successors, (2168), 4 states have internal predecessors, (2168), 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) [2022-07-19 21:15:02,835 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 542.0) internal successors, (2168), 4 states have internal predecessors, (2168), 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) [2022-07-19 21:15:02,837 INFO L186 Difference]: Start difference. First operand has 482 places, 542 transitions, 1092 flow. Second operand 3 states and 1524 transitions. [2022-07-19 21:15:02,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 484 places, 504 transitions, 1050 flow [2022-07-19 21:15:02,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 484 places, 504 transitions, 1050 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-19 21:15:02,860 INFO L242 Difference]: Finished difference. Result has 485 places, 499 transitions, 1016 flow [2022-07-19 21:15:02,862 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=542, PETRI_DIFFERENCE_MINUEND_FLOW=1004, PETRI_DIFFERENCE_MINUEND_PLACES=482, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=496, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1016, PETRI_PLACES=485, PETRI_TRANSITIONS=499} [2022-07-19 21:15:02,866 INFO L279 CegarLoopForPetriNet]: 482 programPoint places, 3 predicate places. [2022-07-19 21:15:02,866 INFO L495 AbstractCegarLoop]: Abstraction has has 485 places, 499 transitions, 1016 flow [2022-07-19 21:15:02,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 488.0) internal successors, (1464), 3 states have internal predecessors, (1464), 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) [2022-07-19 21:15:02,871 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:15:02,872 INFO L200 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] [2022-07-19 21:15:02,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 21:15:02,872 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 38 more)] === [2022-07-19 21:15:02,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:15:02,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1789690299, now seen corresponding path program 1 times [2022-07-19 21:15:02,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:15:02,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109183300] [2022-07-19 21:15:02,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:15:02,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:15:02,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:15:02,985 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:15:02,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:15:02,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109183300] [2022-07-19 21:15:02,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109183300] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:15:02,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502249750] [2022-07-19 21:15:02,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:15:02,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:15:02,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:15:02,989 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) [2022-07-19 21:15:02,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 21:15:03,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:15:03,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 21:15:03,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:15:03,171 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:15:03,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:15:03,204 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:15:03,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1502249750] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 21:15:03,205 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 21:15:03,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2022-07-19 21:15:03,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966074711] [2022-07-19 21:15:03,206 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 21:15:03,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:15:03,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:15:03,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:15:03,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:15:03,213 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 487 out of 542 [2022-07-19 21:15:03,216 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 485 places, 499 transitions, 1016 flow. Second operand has 5 states, 5 states have (on average 490.2) internal successors, (2451), 5 states have internal predecessors, (2451), 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) [2022-07-19 21:15:03,216 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:15:03,216 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 487 of 542 [2022-07-19 21:15:03,216 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:15:03,407 INFO L129 PetriNetUnfolder]: 28/736 cut-off events. [2022-07-19 21:15:03,408 INFO L130 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-07-19 21:15:03,414 INFO L84 FinitePrefix]: Finished finitePrefix Result has 768 conditions, 736 events. 28/736 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2562 event pairs, 0 based on Foata normal form. 1/665 useless extension candidates. Maximal degree in co-relation 710. Up to 7 conditions per place. [2022-07-19 21:15:03,418 INFO L132 encePairwiseOnDemand]: 538/542 looper letters, 14 selfloop transitions, 4 changer transitions 0/505 dead transitions. [2022-07-19 21:15:03,419 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 488 places, 505 transitions, 1064 flow [2022-07-19 21:15:03,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 21:15:03,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-19 21:15:03,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1967 transitions. [2022-07-19 21:15:03,423 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9072878228782287 [2022-07-19 21:15:03,424 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1967 transitions. [2022-07-19 21:15:03,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1967 transitions. [2022-07-19 21:15:03,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:15:03,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1967 transitions. [2022-07-19 21:15:03,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 491.75) internal successors, (1967), 4 states have internal predecessors, (1967), 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) [2022-07-19 21:15:03,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 542.0) internal successors, (2710), 5 states have internal predecessors, (2710), 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) [2022-07-19 21:15:03,434 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 542.0) internal successors, (2710), 5 states have internal predecessors, (2710), 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) [2022-07-19 21:15:03,435 INFO L186 Difference]: Start difference. First operand has 485 places, 499 transitions, 1016 flow. Second operand 4 states and 1967 transitions. [2022-07-19 21:15:03,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 488 places, 505 transitions, 1064 flow [2022-07-19 21:15:03,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 487 places, 505 transitions, 1062 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-19 21:15:03,444 INFO L242 Difference]: Finished difference. Result has 489 places, 500 transitions, 1034 flow [2022-07-19 21:15:03,445 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=542, PETRI_DIFFERENCE_MINUEND_FLOW=1014, PETRI_DIFFERENCE_MINUEND_PLACES=484, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=499, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=495, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1034, PETRI_PLACES=489, PETRI_TRANSITIONS=500} [2022-07-19 21:15:03,445 INFO L279 CegarLoopForPetriNet]: 482 programPoint places, 7 predicate places. [2022-07-19 21:15:03,446 INFO L495 AbstractCegarLoop]: Abstraction has has 489 places, 500 transitions, 1034 flow [2022-07-19 21:15:03,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 490.2) internal successors, (2451), 5 states have internal predecessors, (2451), 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) [2022-07-19 21:15:03,447 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:15:03,447 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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] [2022-07-19 21:15:03,472 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-19 21:15:03,663 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 [2022-07-19 21:15:03,664 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 38 more)] === [2022-07-19 21:15:03,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:15:03,664 INFO L85 PathProgramCache]: Analyzing trace with hash -229323493, now seen corresponding path program 2 times [2022-07-19 21:15:03,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:15:03,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146458419] [2022-07-19 21:15:03,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:15:03,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:15:03,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:15:03,756 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-19 21:15:03,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:15:03,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146458419] [2022-07-19 21:15:03,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146458419] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:15:03,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:15:03,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 21:15:03,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455637957] [2022-07-19 21:15:03,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:15:03,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 21:15:03,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:15:03,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 21:15:03,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 21:15:03,763 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 484 out of 542 [2022-07-19 21:15:03,765 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 489 places, 500 transitions, 1034 flow. Second operand has 4 states, 4 states have (on average 485.0) internal successors, (1940), 4 states have internal predecessors, (1940), 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) [2022-07-19 21:15:03,765 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:15:03,765 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 484 of 542 [2022-07-19 21:15:03,765 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:15:03,915 INFO L129 PetriNetUnfolder]: 28/732 cut-off events. [2022-07-19 21:15:03,916 INFO L130 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2022-07-19 21:15:03,924 INFO L84 FinitePrefix]: Finished finitePrefix Result has 768 conditions, 732 events. 28/732 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2555 event pairs, 0 based on Foata normal form. 0/662 useless extension candidates. Maximal degree in co-relation 700. Up to 9 conditions per place. [2022-07-19 21:15:03,928 INFO L132 encePairwiseOnDemand]: 536/542 looper letters, 8 selfloop transitions, 4 changer transitions 0/496 dead transitions. [2022-07-19 21:15:03,929 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 488 places, 496 transitions, 1050 flow [2022-07-19 21:15:03,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 21:15:03,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-19 21:15:03,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1950 transitions. [2022-07-19 21:15:03,933 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8994464944649446 [2022-07-19 21:15:03,934 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1950 transitions. [2022-07-19 21:15:03,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1950 transitions. [2022-07-19 21:15:03,935 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:15:03,935 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1950 transitions. [2022-07-19 21:15:03,939 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 487.5) internal successors, (1950), 4 states have internal predecessors, (1950), 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) [2022-07-19 21:15:03,943 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 542.0) internal successors, (2710), 5 states have internal predecessors, (2710), 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) [2022-07-19 21:15:03,944 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 542.0) internal successors, (2710), 5 states have internal predecessors, (2710), 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) [2022-07-19 21:15:03,944 INFO L186 Difference]: Start difference. First operand has 489 places, 500 transitions, 1034 flow. Second operand 4 states and 1950 transitions. [2022-07-19 21:15:03,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 488 places, 496 transitions, 1050 flow [2022-07-19 21:15:03,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 487 places, 496 transitions, 1046 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-07-19 21:15:03,954 INFO L242 Difference]: Finished difference. Result has 487 places, 496 transitions, 1030 flow [2022-07-19 21:15:03,955 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=542, PETRI_DIFFERENCE_MINUEND_FLOW=1022, PETRI_DIFFERENCE_MINUEND_PLACES=484, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=496, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=492, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1030, PETRI_PLACES=487, PETRI_TRANSITIONS=496} [2022-07-19 21:15:03,957 INFO L279 CegarLoopForPetriNet]: 482 programPoint places, 5 predicate places. [2022-07-19 21:15:03,957 INFO L495 AbstractCegarLoop]: Abstraction has has 487 places, 496 transitions, 1030 flow [2022-07-19 21:15:03,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 485.0) internal successors, (1940), 4 states have internal predecessors, (1940), 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) [2022-07-19 21:15:03,962 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:15:03,962 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:15:03,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 21:15:03,962 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 38 more)] === [2022-07-19 21:15:03,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:15:03,963 INFO L85 PathProgramCache]: Analyzing trace with hash -305101375, now seen corresponding path program 1 times [2022-07-19 21:15:03,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:15:03,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050642328] [2022-07-19 21:15:03,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:15:03,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:15:04,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:15:04,105 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-19 21:15:04,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:15:04,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050642328] [2022-07-19 21:15:04,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050642328] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:15:04,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446969413] [2022-07-19 21:15:04,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:15:04,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:15:04,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:15:04,108 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) [2022-07-19 21:15:04,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 21:15:04,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:15:04,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 21:15:04,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:15:04,317 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-19 21:15:04,318 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 21:15:04,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1446969413] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:15:04,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 21:15:04,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2022-07-19 21:15:04,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173346959] [2022-07-19 21:15:04,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:15:04,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 21:15:04,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:15:04,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 21:15:04,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:15:04,323 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 489 out of 542 [2022-07-19 21:15:04,326 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 487 places, 496 transitions, 1030 flow. Second operand has 4 states, 4 states have (on average 491.25) internal successors, (1965), 4 states have internal predecessors, (1965), 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) [2022-07-19 21:15:04,326 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:15:04,326 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 489 of 542 [2022-07-19 21:15:04,326 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:15:04,473 INFO L129 PetriNetUnfolder]: 28/727 cut-off events. [2022-07-19 21:15:04,474 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-07-19 21:15:04,483 INFO L84 FinitePrefix]: Finished finitePrefix Result has 763 conditions, 727 events. 28/727 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2517 event pairs, 0 based on Foata normal form. 0/658 useless extension candidates. Maximal degree in co-relation 695. Up to 5 conditions per place. [2022-07-19 21:15:04,487 INFO L132 encePairwiseOnDemand]: 538/542 looper letters, 7 selfloop transitions, 3 changer transitions 0/496 dead transitions. [2022-07-19 21:15:04,488 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 489 places, 496 transitions, 1048 flow [2022-07-19 21:15:04,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 21:15:04,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-19 21:15:04,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1967 transitions. [2022-07-19 21:15:04,492 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9072878228782287 [2022-07-19 21:15:04,492 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1967 transitions. [2022-07-19 21:15:04,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1967 transitions. [2022-07-19 21:15:04,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:15:04,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1967 transitions. [2022-07-19 21:15:04,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 491.75) internal successors, (1967), 4 states have internal predecessors, (1967), 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) [2022-07-19 21:15:04,502 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 542.0) internal successors, (2710), 5 states have internal predecessors, (2710), 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) [2022-07-19 21:15:04,503 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 542.0) internal successors, (2710), 5 states have internal predecessors, (2710), 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) [2022-07-19 21:15:04,503 INFO L186 Difference]: Start difference. First operand has 487 places, 496 transitions, 1030 flow. Second operand 4 states and 1967 transitions. [2022-07-19 21:15:04,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 489 places, 496 transitions, 1048 flow [2022-07-19 21:15:04,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 484 places, 496 transitions, 1036 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-07-19 21:15:04,513 INFO L242 Difference]: Finished difference. Result has 486 places, 496 transitions, 1031 flow [2022-07-19 21:15:04,514 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=542, PETRI_DIFFERENCE_MINUEND_FLOW=1014, PETRI_DIFFERENCE_MINUEND_PLACES=481, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=495, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=492, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1031, PETRI_PLACES=486, PETRI_TRANSITIONS=496} [2022-07-19 21:15:04,514 INFO L279 CegarLoopForPetriNet]: 482 programPoint places, 4 predicate places. [2022-07-19 21:15:04,515 INFO L495 AbstractCegarLoop]: Abstraction has has 486 places, 496 transitions, 1031 flow [2022-07-19 21:15:04,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 491.25) internal successors, (1965), 4 states have internal predecessors, (1965), 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) [2022-07-19 21:15:04,516 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:15:04,516 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:15:04,548 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-19 21:15:04,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-07-19 21:15:04,740 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 38 more)] === [2022-07-19 21:15:04,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:15:04,740 INFO L85 PathProgramCache]: Analyzing trace with hash 47514415, now seen corresponding path program 1 times [2022-07-19 21:15:04,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:15:04,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46794878] [2022-07-19 21:15:04,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:15:04,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:15:04,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:15:04,822 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-19 21:15:04,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:15:04,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46794878] [2022-07-19 21:15:04,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46794878] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:15:04,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:15:04,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:15:04,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520061103] [2022-07-19 21:15:04,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:15:04,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:15:04,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:15:04,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:15:04,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:15:04,829 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 489 out of 542 [2022-07-19 21:15:04,831 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 486 places, 496 transitions, 1031 flow. Second operand has 3 states, 3 states have (on average 490.0) internal successors, (1470), 3 states have internal predecessors, (1470), 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) [2022-07-19 21:15:04,831 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:15:04,831 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 489 of 542 [2022-07-19 21:15:04,831 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:15:04,947 INFO L129 PetriNetUnfolder]: 19/533 cut-off events. [2022-07-19 21:15:04,947 INFO L130 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2022-07-19 21:15:04,958 INFO L84 FinitePrefix]: Finished finitePrefix Result has 568 conditions, 533 events. 19/533 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1136 event pairs, 0 based on Foata normal form. 1/486 useless extension candidates. Maximal degree in co-relation 499. Up to 5 conditions per place. [2022-07-19 21:15:04,963 INFO L132 encePairwiseOnDemand]: 539/542 looper letters, 7 selfloop transitions, 2 changer transitions 0/495 dead transitions. [2022-07-19 21:15:04,963 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 488 places, 495 transitions, 1043 flow [2022-07-19 21:15:04,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:15:04,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:15:04,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1477 transitions. [2022-07-19 21:15:04,967 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9083640836408364 [2022-07-19 21:15:04,967 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1477 transitions. [2022-07-19 21:15:04,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1477 transitions. [2022-07-19 21:15:04,968 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:15:04,968 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1477 transitions. [2022-07-19 21:15:04,972 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 492.3333333333333) internal successors, (1477), 3 states have internal predecessors, (1477), 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) [2022-07-19 21:15:04,976 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 542.0) internal successors, (2168), 4 states have internal predecessors, (2168), 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) [2022-07-19 21:15:04,977 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 542.0) internal successors, (2168), 4 states have internal predecessors, (2168), 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) [2022-07-19 21:15:04,977 INFO L186 Difference]: Start difference. First operand has 486 places, 496 transitions, 1031 flow. Second operand 3 states and 1477 transitions. [2022-07-19 21:15:04,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 488 places, 495 transitions, 1043 flow [2022-07-19 21:15:04,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 486 places, 495 transitions, 1040 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-19 21:15:04,992 INFO L242 Difference]: Finished difference. Result has 486 places, 495 transitions, 1026 flow [2022-07-19 21:15:04,993 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=542, PETRI_DIFFERENCE_MINUEND_FLOW=1022, PETRI_DIFFERENCE_MINUEND_PLACES=484, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=495, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=493, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1026, PETRI_PLACES=486, PETRI_TRANSITIONS=495} [2022-07-19 21:15:04,996 INFO L279 CegarLoopForPetriNet]: 482 programPoint places, 4 predicate places. [2022-07-19 21:15:04,996 INFO L495 AbstractCegarLoop]: Abstraction has has 486 places, 495 transitions, 1026 flow [2022-07-19 21:15:04,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 490.0) internal successors, (1470), 3 states have internal predecessors, (1470), 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) [2022-07-19 21:15:04,998 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:15:04,998 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:15:04,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 21:15:04,998 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting worker_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 38 more)] === [2022-07-19 21:15:04,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:15:04,999 INFO L85 PathProgramCache]: Analyzing trace with hash 267906197, now seen corresponding path program 1 times [2022-07-19 21:15:04,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:15:05,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574361558] [2022-07-19 21:15:05,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:15:05,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:15:05,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:15:06,021 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-19 21:15:06,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:15:06,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574361558] [2022-07-19 21:15:06,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574361558] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:15:06,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:15:06,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-07-19 21:15:06,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226787046] [2022-07-19 21:15:06,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:15:06,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-19 21:15:06,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:15:06,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-19 21:15:06,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=316, Unknown=0, NotChecked=0, Total=420 [2022-07-19 21:15:06,031 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 369 out of 542 [2022-07-19 21:15:06,038 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 486 places, 495 transitions, 1026 flow. Second operand has 21 states, 21 states have (on average 371.3809523809524) internal successors, (7799), 21 states have internal predecessors, (7799), 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) [2022-07-19 21:15:06,039 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:15:06,039 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 369 of 542 [2022-07-19 21:15:06,039 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:15:08,870 INFO L129 PetriNetUnfolder]: 2475/12019 cut-off events. [2022-07-19 21:15:08,871 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-07-19 21:15:08,918 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16148 conditions, 12019 events. 2475/12019 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 118244 event pairs, 976 based on Foata normal form. 0/10727 useless extension candidates. Maximal degree in co-relation 16048. Up to 2878 conditions per place. [2022-07-19 21:15:08,964 INFO L132 encePairwiseOnDemand]: 521/542 looper letters, 234 selfloop transitions, 24 changer transitions 0/624 dead transitions. [2022-07-19 21:15:08,964 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 501 places, 624 transitions, 1800 flow [2022-07-19 21:15:08,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-19 21:15:08,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-19 21:15:08,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 6166 transitions. [2022-07-19 21:15:08,978 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7110239852398524 [2022-07-19 21:15:08,978 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 6166 transitions. [2022-07-19 21:15:08,978 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 6166 transitions. [2022-07-19 21:15:09,026 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:15:09,026 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 6166 transitions. [2022-07-19 21:15:09,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 385.375) internal successors, (6166), 16 states have internal predecessors, (6166), 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) [2022-07-19 21:15:09,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 542.0) internal successors, (9214), 17 states have internal predecessors, (9214), 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) [2022-07-19 21:15:09,058 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 542.0) internal successors, (9214), 17 states have internal predecessors, (9214), 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) [2022-07-19 21:15:09,058 INFO L186 Difference]: Start difference. First operand has 486 places, 495 transitions, 1026 flow. Second operand 16 states and 6166 transitions. [2022-07-19 21:15:09,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 501 places, 624 transitions, 1800 flow [2022-07-19 21:15:09,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 499 places, 624 transitions, 1796 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-19 21:15:09,069 INFO L242 Difference]: Finished difference. Result has 504 places, 506 transitions, 1134 flow [2022-07-19 21:15:09,070 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=542, PETRI_DIFFERENCE_MINUEND_FLOW=1022, PETRI_DIFFERENCE_MINUEND_PLACES=484, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=495, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=476, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1134, PETRI_PLACES=504, PETRI_TRANSITIONS=506} [2022-07-19 21:15:09,071 INFO L279 CegarLoopForPetriNet]: 482 programPoint places, 22 predicate places. [2022-07-19 21:15:09,071 INFO L495 AbstractCegarLoop]: Abstraction has has 504 places, 506 transitions, 1134 flow [2022-07-19 21:15:09,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 371.3809523809524) internal successors, (7799), 21 states have internal predecessors, (7799), 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) [2022-07-19 21:15:09,074 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:15:09,075 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:15:09,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 21:15:09,075 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting worker_fnErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 38 more)] === [2022-07-19 21:15:09,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:15:09,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1146631376, now seen corresponding path program 1 times [2022-07-19 21:15:09,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:15:09,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692294180] [2022-07-19 21:15:09,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:15:09,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:15:09,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:15:10,018 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-19 21:15:10,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:15:10,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692294180] [2022-07-19 21:15:10,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692294180] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:15:10,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:15:10,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-07-19 21:15:10,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995329382] [2022-07-19 21:15:10,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:15:10,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-19 21:15:10,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:15:10,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-19 21:15:10,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=316, Unknown=0, NotChecked=0, Total=420 [2022-07-19 21:15:10,026 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 369 out of 542 [2022-07-19 21:15:10,033 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 506 transitions, 1134 flow. Second operand has 21 states, 21 states have (on average 371.42857142857144) internal successors, (7800), 21 states have internal predecessors, (7800), 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) [2022-07-19 21:15:10,033 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:15:10,033 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 369 of 542 [2022-07-19 21:15:10,033 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:15:12,515 INFO L129 PetriNetUnfolder]: 2501/12492 cut-off events. [2022-07-19 21:15:12,516 INFO L130 PetriNetUnfolder]: For 505/505 co-relation queries the response was YES. [2022-07-19 21:15:12,567 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17256 conditions, 12492 events. 2501/12492 cut-off events. For 505/505 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 123775 event pairs, 1016 based on Foata normal form. 0/11216 useless extension candidates. Maximal degree in co-relation 17144. Up to 2929 conditions per place. [2022-07-19 21:15:12,604 INFO L132 encePairwiseOnDemand]: 522/542 looper letters, 234 selfloop transitions, 26 changer transitions 0/629 dead transitions. [2022-07-19 21:15:12,604 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 629 transitions, 1921 flow [2022-07-19 21:15:12,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-19 21:15:12,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-19 21:15:12,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 6165 transitions. [2022-07-19 21:15:12,618 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7109086715867159 [2022-07-19 21:15:12,618 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 6165 transitions. [2022-07-19 21:15:12,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 6165 transitions. [2022-07-19 21:15:12,621 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:15:12,621 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 6165 transitions. [2022-07-19 21:15:12,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 385.3125) internal successors, (6165), 16 states have internal predecessors, (6165), 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) [2022-07-19 21:15:12,650 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 542.0) internal successors, (9214), 17 states have internal predecessors, (9214), 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) [2022-07-19 21:15:12,652 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 542.0) internal successors, (9214), 17 states have internal predecessors, (9214), 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) [2022-07-19 21:15:12,653 INFO L186 Difference]: Start difference. First operand has 504 places, 506 transitions, 1134 flow. Second operand 16 states and 6165 transitions. [2022-07-19 21:15:12,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 629 transitions, 1921 flow [2022-07-19 21:15:12,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 510 places, 629 transitions, 1897 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-07-19 21:15:12,669 INFO L242 Difference]: Finished difference. Result has 514 places, 512 transitions, 1207 flow [2022-07-19 21:15:12,670 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=542, PETRI_DIFFERENCE_MINUEND_FLOW=1111, PETRI_DIFFERENCE_MINUEND_PLACES=495, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=506, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=484, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1207, PETRI_PLACES=514, PETRI_TRANSITIONS=512} [2022-07-19 21:15:12,671 INFO L279 CegarLoopForPetriNet]: 482 programPoint places, 32 predicate places. [2022-07-19 21:15:12,671 INFO L495 AbstractCegarLoop]: Abstraction has has 514 places, 512 transitions, 1207 flow [2022-07-19 21:15:12,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 371.42857142857144) internal successors, (7800), 21 states have internal predecessors, (7800), 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) [2022-07-19 21:15:12,674 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:15:12,674 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:15:12,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 21:15:12,674 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting worker_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 38 more)] === [2022-07-19 21:15:12,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:15:12,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1809153885, now seen corresponding path program 1 times [2022-07-19 21:15:12,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:15:12,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126027495] [2022-07-19 21:15:12,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:15:12,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:15:12,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:15:15,411 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:15:15,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:15:15,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126027495] [2022-07-19 21:15:15,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126027495] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:15:15,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [231385856] [2022-07-19 21:15:15,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:15:15,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:15:15,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:15:15,416 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:15:15,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-19 21:15:15,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:15:15,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 73 conjunts are in the unsatisfiable core [2022-07-19 21:15:15,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:15:16,188 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-07-19 21:15:16,189 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2022-07-19 21:15:16,338 INFO L356 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-07-19 21:15:16,339 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 27 treesize of output 45 [2022-07-19 21:15:16,526 INFO L356 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-07-19 21:15:16,526 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 32 treesize of output 57 [2022-07-19 21:15:16,799 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 33 [2022-07-19 21:15:16,898 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 33 [2022-07-19 21:15:16,952 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 33 [2022-07-19 21:15:17,315 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 33 [2022-07-19 21:15:17,349 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 33 [2022-07-19 21:15:17,467 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 33 [2022-07-19 21:15:18,107 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 33 [2022-07-19 21:15:18,139 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 33 [2022-07-19 21:15:18,797 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 33 [2022-07-19 21:15:18,830 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 33 [2022-07-19 21:15:19,130 INFO L356 Elim1Store]: treesize reduction 16, result has 51.5 percent of original size [2022-07-19 21:15:19,131 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 32 [2022-07-19 21:15:19,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 21:15:19,362 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 44 [2022-07-19 21:15:19,517 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 33 [2022-07-19 21:15:19,923 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2022-07-19 21:15:19,927 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-19 21:15:19,928 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:15:20,257 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_695 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_~#pre~0.base| v_ArrVal_695))) (let ((.cse1 (select .cse0 |c_~#in~0.base|))) (or (not (<= (mod (select (select .cse0 |c_~#post~0.base|) |c_~#post~0.offset|) 256) 0)) (not (<= (mod (select .cse1 |c_~#in~0.offset|) 256) 0)) (= (mod (select .cse1 (+ |c_~#in~0.offset| 1)) 256) 0))))) is different from false [2022-07-19 21:15:20,386 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_694 Int) (v_ArrVal_695 (Array Int Int))) (let ((.cse0 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#worker~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#worker~0#1.base|) (+ |c_ULTIMATE.start_main_~#worker~0#1.offset| (* |c_ULTIMATE.start_main_~i~5#1| 4)) v_ArrVal_694)) |c_~#pre~0.base| v_ArrVal_695))) (let ((.cse1 (select .cse0 |c_~#in~0.base|))) (or (not (<= (mod (select (select .cse0 |c_~#post~0.base|) |c_~#post~0.offset|) 256) 0)) (= (mod (select .cse1 (+ |c_~#in~0.offset| 1)) 256) 0) (not (<= (mod (select .cse1 |c_~#in~0.offset|) 256) 0)))))) is different from false [2022-07-19 21:15:20,483 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~5#1_12| Int)) (or (not (<= |v_ULTIMATE.start_main_~i~5#1_12| 0)) (forall ((v_ArrVal_694 Int) (v_ArrVal_695 (Array Int Int))) (let ((.cse1 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#worker~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#worker~0#1.base|) (+ |c_ULTIMATE.start_main_~#worker~0#1.offset| (* |v_ULTIMATE.start_main_~i~5#1_12| 4)) v_ArrVal_694)) |c_~#pre~0.base| v_ArrVal_695))) (let ((.cse0 (select .cse1 |c_~#in~0.base|))) (or (= (mod (select .cse0 (+ |c_~#in~0.offset| 1)) 256) 0) (not (<= (mod (select .cse0 |c_~#in~0.offset|) 256) 0)) (not (<= (mod (select (select .cse1 |c_~#post~0.base|) |c_~#post~0.offset|) 256) 0)))))))) is different from false [2022-07-19 21:15:24,999 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 21:15:25,000 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 21:15:25,002 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 21:15:25,002 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 21:15:25,003 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 21:15:25,004 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 21:15:25,018 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 21:15:25,049 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 21:15:25,050 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 42184 treesize of output 41550 [2022-07-19 21:15:25,343 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 21:15:25,376 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 21:15:25,378 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 41514 treesize of output 38456 [2022-07-19 21:15:25,709 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 21:15:25,712 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38380 treesize of output 37612 [2022-07-19 21:15:25,931 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 21:15:25,933 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42348 treesize of output 41388 [2022-07-19 21:15:26,175 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 21:15:26,177 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41388 treesize of output 41004 [2022-07-19 21:15:28,027 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 65 treesize of output 59 [2022-07-19 21:15:29,683 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 11702 treesize of output 11190