./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-divine/one_time_barrier_3t.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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_3t.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 658086e6a2b970f68ba6fa20919311f7cc4c75e1705e5ad288c4fd1e6439159f --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 10:13:06,278 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 10:13:06,280 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 10:13:06,320 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 10:13:06,321 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 10:13:06,322 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 10:13:06,323 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 10:13:06,327 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 10:13:06,330 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 10:13:06,331 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 10:13:06,332 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 10:13:06,334 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 10:13:06,335 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 10:13:06,338 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 10:13:06,339 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 10:13:06,341 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 10:13:06,343 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 10:13:06,348 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 10:13:06,350 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 10:13:06,354 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 10:13:06,355 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 10:13:06,355 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 10:13:06,356 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 10:13:06,359 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 10:13:06,359 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 10:13:06,361 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 10:13:06,363 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 10:13:06,363 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 10:13:06,363 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 10:13:06,364 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 10:13:06,364 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 10:13:06,365 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 10:13:06,366 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 10:13:06,366 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 10:13:06,367 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 10:13:06,368 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 10:13:06,368 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 10:13:06,368 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 10:13:06,368 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 10:13:06,368 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 10:13:06,369 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 10:13:06,369 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 10:13:06,371 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 10:13:06,389 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 10:13:06,390 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 10:13:06,390 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 10:13:06,390 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 10:13:06,391 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 10:13:06,391 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 10:13:06,392 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 10:13:06,392 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 10:13:06,392 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 10:13:06,393 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 10:13:06,393 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 10:13:06,393 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 10:13:06,393 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 10:13:06,393 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 10:13:06,393 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 10:13:06,393 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 10:13:06,394 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 10:13:06,394 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 10:13:06,394 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 10:13:06,394 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 10:13:06,394 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 10:13:06,394 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 10:13:06,395 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 10:13:06,396 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 10:13:06,396 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:13:06,396 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 10:13:06,396 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 10:13:06,396 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 10:13:06,396 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 10:13:06,397 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 10:13:06,397 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 10:13:06,397 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 10:13:06,397 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 10:13:06,397 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 658086e6a2b970f68ba6fa20919311f7cc4c75e1705e5ad288c4fd1e6439159f [2022-07-12 10:13:06,592 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 10:13:06,608 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 10:13:06,610 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 10:13:06,611 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 10:13:06,611 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 10:13:06,612 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-divine/one_time_barrier_3t.i [2022-07-12 10:13:06,652 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9832a2a83/50a9c2dc66094713ac75987c8227caab/FLAGf91e0fe2b [2022-07-12 10:13:07,003 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 10:13:07,008 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_3t.i [2022-07-12 10:13:07,024 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9832a2a83/50a9c2dc66094713ac75987c8227caab/FLAGf91e0fe2b [2022-07-12 10:13:07,396 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9832a2a83/50a9c2dc66094713ac75987c8227caab [2022-07-12 10:13:07,398 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 10:13:07,398 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 10:13:07,415 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 10:13:07,415 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 10:13:07,417 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 10:13:07,418 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:13:07" (1/1) ... [2022-07-12 10:13:07,418 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2de1291d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:13:07, skipping insertion in model container [2022-07-12 10:13:07,419 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:13:07" (1/1) ... [2022-07-12 10:13:07,423 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 10:13:07,472 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 10:13:07,592 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-07-12 10:13:07,708 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_3t.i[30448,30461] [2022-07-12 10:13:07,716 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_3t.i[30811,30824] [2022-07-12 10:13:07,725 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_3t.i[31483,31496] [2022-07-12 10:13:07,725 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_3t.i[31534,31547] [2022-07-12 10:13:07,728 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_3t.i[31683,31696] [2022-07-12 10:13:07,729 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_3t.i[31760,31773] [2022-07-12 10:13:07,732 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_3t.i[31807,31820] [2022-07-12 10:13:07,733 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_3t.i[31916,31929] [2022-07-12 10:13:07,735 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_3t.i[32035,32048] [2022-07-12 10:13:07,736 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_3t.i[32083,32096] [2022-07-12 10:13:07,737 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_3t.i[32160,32173] [2022-07-12 10:13:07,739 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_3t.i[32286,32299] [2022-07-12 10:13:07,749 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_3t.i[32869,32882] [2022-07-12 10:13:07,750 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_3t.i[32946,32959] [2022-07-12 10:13:07,751 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:13:07,759 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 10:13:07,772 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-07-12 10:13:07,788 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_3t.i[30448,30461] [2022-07-12 10:13:07,789 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_3t.i[30811,30824] [2022-07-12 10:13:07,799 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_3t.i[31483,31496] [2022-07-12 10:13:07,799 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_3t.i[31534,31547] [2022-07-12 10:13:07,800 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_3t.i[31683,31696] [2022-07-12 10:13:07,801 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_3t.i[31760,31773] [2022-07-12 10:13:07,801 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_3t.i[31807,31820] [2022-07-12 10:13:07,802 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_3t.i[31916,31929] [2022-07-12 10:13:07,803 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_3t.i[32035,32048] [2022-07-12 10:13:07,807 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_3t.i[32083,32096] [2022-07-12 10:13:07,809 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_3t.i[32160,32173] [2022-07-12 10:13:07,809 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_3t.i[32286,32299] [2022-07-12 10:13:07,813 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_3t.i[32869,32882] [2022-07-12 10:13:07,814 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_3t.i[32946,32959] [2022-07-12 10:13:07,814 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:13:07,838 INFO L208 MainTranslator]: Completed translation [2022-07-12 10:13:07,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:13:07 WrapperNode [2022-07-12 10:13:07,838 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 10:13:07,839 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 10:13:07,839 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 10:13:07,839 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 10:13:07,846 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:13:07" (1/1) ... [2022-07-12 10:13:07,857 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:13:07" (1/1) ... [2022-07-12 10:13:07,883 INFO L137 Inliner]: procedures = 174, calls = 75, calls flagged for inlining = 6, calls inlined = 8, statements flattened = 464 [2022-07-12 10:13:07,883 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 10:13:07,884 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 10:13:07,884 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 10:13:07,884 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 10:13:07,890 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:13:07" (1/1) ... [2022-07-12 10:13:07,891 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:13:07" (1/1) ... [2022-07-12 10:13:07,895 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:13:07" (1/1) ... [2022-07-12 10:13:07,895 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:13:07" (1/1) ... [2022-07-12 10:13:07,909 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:13:07" (1/1) ... [2022-07-12 10:13:07,914 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:13:07" (1/1) ... [2022-07-12 10:13:07,916 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:13:07" (1/1) ... [2022-07-12 10:13:07,919 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 10:13:07,919 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 10:13:07,919 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 10:13:07,920 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 10:13:07,920 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:13:07" (1/1) ... [2022-07-12 10:13:07,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:13:07,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:13:07,977 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) [2022-07-12 10:13:07,978 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 [2022-07-12 10:13:08,008 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 10:13:08,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 10:13:08,008 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-07-12 10:13:08,009 INFO L130 BoogieDeclarations]: Found specification of procedure worker_fn [2022-07-12 10:13:08,009 INFO L138 BoogieDeclarations]: Found implementation of procedure worker_fn [2022-07-12 10:13:08,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 10:13:08,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-12 10:13:08,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 10:13:08,009 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-12 10:13:08,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 10:13:08,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 10:13:08,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 10:13:08,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 10:13:08,011 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-12 10:13:08,126 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 10:13:08,127 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 10:13:08,617 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 10:13:08,624 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 10:13:08,624 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2022-07-12 10:13:08,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:13:08 BoogieIcfgContainer [2022-07-12 10:13:08,625 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 10:13:08,627 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 10:13:08,627 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 10:13:08,629 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 10:13:08,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 10:13:07" (1/3) ... [2022-07-12 10:13:08,630 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6de0babd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:13:08, skipping insertion in model container [2022-07-12 10:13:08,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:13:07" (2/3) ... [2022-07-12 10:13:08,631 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6de0babd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:13:08, skipping insertion in model container [2022-07-12 10:13:08,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:13:08" (3/3) ... [2022-07-12 10:13:08,632 INFO L111 eAbstractionObserver]: Analyzing ICFG one_time_barrier_3t.i [2022-07-12 10:13:08,636 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-12 10:13:08,642 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 10:13:08,643 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 27 error locations. [2022-07-12 10:13:08,644 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-12 10:13:08,757 INFO L135 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-07-12 10:13:08,781 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 473 places, 532 transitions, 1072 flow [2022-07-12 10:13:08,934 INFO L129 PetriNetUnfolder]: 94/783 cut-off events. [2022-07-12 10:13:08,934 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-07-12 10:13:08,947 INFO L84 FinitePrefix]: Finished finitePrefix Result has 789 conditions, 783 events. 94/783 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2629 event pairs, 0 based on Foata normal form. 0/645 useless extension candidates. Maximal degree in co-relation 460. Up to 4 conditions per place. [2022-07-12 10:13:08,947 INFO L82 GeneralOperation]: Start removeDead. Operand has 473 places, 532 transitions, 1072 flow [2022-07-12 10:13:08,959 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 473 places, 532 transitions, 1072 flow [2022-07-12 10:13:08,969 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:13:08,973 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@4b78d0f9, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@60eb370d [2022-07-12 10:13:08,973 INFO L358 AbstractCegarLoop]: Starting to check reachability of 40 error locations. [2022-07-12 10:13:08,977 INFO L129 PetriNetUnfolder]: 3/58 cut-off events. [2022-07-12 10:13:08,977 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-12 10:13:08,977 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:13:08,978 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] [2022-07-12 10:13:08,978 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2022-07-12 10:13:08,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:13:08,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1416560676, now seen corresponding path program 1 times [2022-07-12 10:13:08,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:13:08,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315696992] [2022-07-12 10:13:08,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:13:08,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:13:09,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:13:09,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:13:09,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:13:09,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315696992] [2022-07-12 10:13:09,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315696992] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:13:09,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:13:09,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:13:09,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604350729] [2022-07-12 10:13:09,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:13:09,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:13:09,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:13:09,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:13:09,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:13:09,197 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 478 out of 532 [2022-07-12 10:13:09,201 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 473 places, 532 transitions, 1072 flow. Second operand has 3 states, 3 states have (on average 479.0) internal successors, (1437), 3 states have internal predecessors, (1437), 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) [2022-07-12 10:13:09,201 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:13:09,201 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 478 of 532 [2022-07-12 10:13:09,202 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:13:09,328 INFO L129 PetriNetUnfolder]: 28/723 cut-off events. [2022-07-12 10:13:09,328 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-07-12 10:13:09,334 INFO L84 FinitePrefix]: Finished finitePrefix Result has 747 conditions, 723 events. 28/723 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2555 event pairs, 0 based on Foata normal form. 65/716 useless extension candidates. Maximal degree in co-relation 421. Up to 12 conditions per place. [2022-07-12 10:13:09,338 INFO L132 encePairwiseOnDemand]: 486/532 looper letters, 15 selfloop transitions, 2 changer transitions 0/495 dead transitions. [2022-07-12 10:13:09,338 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 475 places, 495 transitions, 1032 flow [2022-07-12 10:13:09,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:13:09,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:13:09,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1496 transitions. [2022-07-12 10:13:09,351 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9373433583959899 [2022-07-12 10:13:09,351 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1496 transitions. [2022-07-12 10:13:09,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1496 transitions. [2022-07-12 10:13:09,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:13:09,356 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1496 transitions. [2022-07-12 10:13:09,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 498.6666666666667) internal successors, (1496), 3 states have internal predecessors, (1496), 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) [2022-07-12 10:13:09,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 532.0) internal successors, (2128), 4 states have internal predecessors, (2128), 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) [2022-07-12 10:13:09,386 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 532.0) internal successors, (2128), 4 states have internal predecessors, (2128), 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) [2022-07-12 10:13:09,387 INFO L186 Difference]: Start difference. First operand has 473 places, 532 transitions, 1072 flow. Second operand 3 states and 1496 transitions. [2022-07-12 10:13:09,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 475 places, 495 transitions, 1032 flow [2022-07-12 10:13:09,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 475 places, 495 transitions, 1032 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-12 10:13:09,401 INFO L242 Difference]: Finished difference. Result has 476 places, 490 transitions, 998 flow [2022-07-12 10:13:09,403 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=532, PETRI_DIFFERENCE_MINUEND_FLOW=986, PETRI_DIFFERENCE_MINUEND_PLACES=473, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=489, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=487, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=998, PETRI_PLACES=476, PETRI_TRANSITIONS=490} [2022-07-12 10:13:09,406 INFO L279 CegarLoopForPetriNet]: 473 programPoint places, 3 predicate places. [2022-07-12 10:13:09,406 INFO L495 AbstractCegarLoop]: Abstraction has has 476 places, 490 transitions, 998 flow [2022-07-12 10:13:09,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 479.0) internal successors, (1437), 3 states have internal predecessors, (1437), 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) [2022-07-12 10:13:09,411 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:13:09,411 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, 1, 1, 1, 1, 1] [2022-07-12 10:13:09,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 10:13:09,411 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2022-07-12 10:13:09,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:13:09,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1160245700, now seen corresponding path program 1 times [2022-07-12 10:13:09,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:13:09,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565865539] [2022-07-12 10:13:09,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:13:09,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:13:09,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:13:09,514 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:13:09,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:13:09,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565865539] [2022-07-12 10:13:09,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565865539] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:13:09,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304997285] [2022-07-12 10:13:09,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:13:09,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:13:09,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:13:09,517 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) [2022-07-12 10:13:09,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 10:13:09,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:13:09,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 10:13:09,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:13:09,645 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:13:09,645 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:13:09,664 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:13:09,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1304997285] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 10:13:09,665 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 10:13:09,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2022-07-12 10:13:09,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15459239] [2022-07-12 10:13:09,666 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 10:13:09,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:13:09,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:13:09,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:13:09,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-07-12 10:13:09,670 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 478 out of 532 [2022-07-12 10:13:09,673 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 476 places, 490 transitions, 998 flow. Second operand has 6 states, 6 states have (on average 482.0) internal successors, (2892), 6 states have internal predecessors, (2892), 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) [2022-07-12 10:13:09,673 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:13:09,673 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 478 of 532 [2022-07-12 10:13:09,673 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:13:09,817 INFO L129 PetriNetUnfolder]: 28/732 cut-off events. [2022-07-12 10:13:09,817 INFO L130 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-07-12 10:13:09,824 INFO L84 FinitePrefix]: Finished finitePrefix Result has 771 conditions, 732 events. 28/732 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2546 event pairs, 0 based on Foata normal form. 2/663 useless extension candidates. Maximal degree in co-relation 708. Up to 7 conditions per place. [2022-07-12 10:13:09,828 INFO L132 encePairwiseOnDemand]: 528/532 looper letters, 19 selfloop transitions, 5 changer transitions 0/502 dead transitions. [2022-07-12 10:13:09,828 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 480 places, 502 transitions, 1072 flow [2022-07-12 10:13:09,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:13:09,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-12 10:13:09,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2416 transitions. [2022-07-12 10:13:09,832 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9082706766917293 [2022-07-12 10:13:09,832 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2416 transitions. [2022-07-12 10:13:09,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2416 transitions. [2022-07-12 10:13:09,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:13:09,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2416 transitions. [2022-07-12 10:13:09,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 483.2) internal successors, (2416), 5 states have internal predecessors, (2416), 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) [2022-07-12 10:13:09,852 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 532.0) internal successors, (3192), 6 states have internal predecessors, (3192), 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) [2022-07-12 10:13:09,854 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 532.0) internal successors, (3192), 6 states have internal predecessors, (3192), 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) [2022-07-12 10:13:09,854 INFO L186 Difference]: Start difference. First operand has 476 places, 490 transitions, 998 flow. Second operand 5 states and 2416 transitions. [2022-07-12 10:13:09,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 480 places, 502 transitions, 1072 flow [2022-07-12 10:13:09,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 479 places, 502 transitions, 1070 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-12 10:13:09,861 INFO L242 Difference]: Finished difference. Result has 482 places, 492 transitions, 1026 flow [2022-07-12 10:13:09,862 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=532, PETRI_DIFFERENCE_MINUEND_FLOW=996, PETRI_DIFFERENCE_MINUEND_PLACES=475, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=490, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=486, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1026, PETRI_PLACES=482, PETRI_TRANSITIONS=492} [2022-07-12 10:13:09,862 INFO L279 CegarLoopForPetriNet]: 473 programPoint places, 9 predicate places. [2022-07-12 10:13:09,862 INFO L495 AbstractCegarLoop]: Abstraction has has 482 places, 492 transitions, 1026 flow [2022-07-12 10:13:09,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 482.0) internal successors, (2892), 6 states have internal predecessors, (2892), 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) [2022-07-12 10:13:09,864 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:13:09,864 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:13:09,884 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 10:13:10,089 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 [2022-07-12 10:13:10,090 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2022-07-12 10:13:10,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:13:10,091 INFO L85 PathProgramCache]: Analyzing trace with hash 2075425340, now seen corresponding path program 2 times [2022-07-12 10:13:10,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:13:10,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343096951] [2022-07-12 10:13:10,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:13:10,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:13:10,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:13:10,184 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-12 10:13:10,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:13:10,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343096951] [2022-07-12 10:13:10,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343096951] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:13:10,184 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:13:10,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 10:13:10,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957074136] [2022-07-12 10:13:10,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:13:10,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 10:13:10,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:13:10,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 10:13:10,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 10:13:10,188 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 481 out of 532 [2022-07-12 10:13:10,190 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 482 places, 492 transitions, 1026 flow. Second operand has 4 states, 4 states have (on average 482.0) internal successors, (1928), 4 states have internal predecessors, (1928), 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) [2022-07-12 10:13:10,190 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:13:10,190 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 481 of 532 [2022-07-12 10:13:10,190 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:13:10,286 INFO L129 PetriNetUnfolder]: 28/730 cut-off events. [2022-07-12 10:13:10,286 INFO L130 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-07-12 10:13:10,293 INFO L84 FinitePrefix]: Finished finitePrefix Result has 767 conditions, 730 events. 28/730 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2542 event pairs, 0 based on Foata normal form. 0/660 useless extension candidates. Maximal degree in co-relation 682. Up to 5 conditions per place. [2022-07-12 10:13:10,296 INFO L132 encePairwiseOnDemand]: 529/532 looper letters, 5 selfloop transitions, 2 changer transitions 0/490 dead transitions. [2022-07-12 10:13:10,296 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 483 places, 490 transitions, 1036 flow [2022-07-12 10:13:10,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 10:13:10,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-12 10:13:10,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1932 transitions. [2022-07-12 10:13:10,300 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9078947368421053 [2022-07-12 10:13:10,300 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1932 transitions. [2022-07-12 10:13:10,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1932 transitions. [2022-07-12 10:13:10,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:13:10,301 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1932 transitions. [2022-07-12 10:13:10,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 483.0) internal successors, (1932), 4 states have internal predecessors, (1932), 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) [2022-07-12 10:13:10,307 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 532.0) internal successors, (2660), 5 states have internal predecessors, (2660), 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) [2022-07-12 10:13:10,308 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 532.0) internal successors, (2660), 5 states have internal predecessors, (2660), 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) [2022-07-12 10:13:10,308 INFO L186 Difference]: Start difference. First operand has 482 places, 492 transitions, 1026 flow. Second operand 4 states and 1932 transitions. [2022-07-12 10:13:10,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 483 places, 490 transitions, 1036 flow [2022-07-12 10:13:10,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 482 places, 490 transitions, 1030 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-07-12 10:13:10,329 INFO L242 Difference]: Finished difference. Result has 482 places, 490 transitions, 1020 flow [2022-07-12 10:13:10,330 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=532, PETRI_DIFFERENCE_MINUEND_FLOW=1016, PETRI_DIFFERENCE_MINUEND_PLACES=479, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=490, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=488, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1020, PETRI_PLACES=482, PETRI_TRANSITIONS=490} [2022-07-12 10:13:10,332 INFO L279 CegarLoopForPetriNet]: 473 programPoint places, 9 predicate places. [2022-07-12 10:13:10,332 INFO L495 AbstractCegarLoop]: Abstraction has has 482 places, 490 transitions, 1020 flow [2022-07-12 10:13:10,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 482.0) internal successors, (1928), 4 states have internal predecessors, (1928), 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) [2022-07-12 10:13:10,334 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:13:10,336 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2022-07-12 10:13:10,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 10:13:10,336 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2022-07-12 10:13:10,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:13:10,337 INFO L85 PathProgramCache]: Analyzing trace with hash 591066944, now seen corresponding path program 1 times [2022-07-12 10:13:10,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:13:10,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761731836] [2022-07-12 10:13:10,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:13:10,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:13:10,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 10:13:10,412 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-12 10:13:10,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 10:13:10,476 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-12 10:13:10,476 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-12 10:13:10,477 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (39 of 40 remaining) [2022-07-12 10:13:10,478 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (38 of 40 remaining) [2022-07-12 10:13:10,479 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (37 of 40 remaining) [2022-07-12 10:13:10,479 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (36 of 40 remaining) [2022-07-12 10:13:10,479 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (35 of 40 remaining) [2022-07-12 10:13:10,479 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (34 of 40 remaining) [2022-07-12 10:13:10,479 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (33 of 40 remaining) [2022-07-12 10:13:10,480 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION (32 of 40 remaining) [2022-07-12 10:13:10,480 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION (31 of 40 remaining) [2022-07-12 10:13:10,480 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (30 of 40 remaining) [2022-07-12 10:13:10,480 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION (29 of 40 remaining) [2022-07-12 10:13:10,480 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION (28 of 40 remaining) [2022-07-12 10:13:10,480 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION (27 of 40 remaining) [2022-07-12 10:13:10,481 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION (26 of 40 remaining) [2022-07-12 10:13:10,481 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION (25 of 40 remaining) [2022-07-12 10:13:10,481 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION (24 of 40 remaining) [2022-07-12 10:13:10,481 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (23 of 40 remaining) [2022-07-12 10:13:10,481 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr1ASSERT_VIOLATIONERROR_FUNCTION (22 of 40 remaining) [2022-07-12 10:13:10,485 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr2ASSERT_VIOLATIONERROR_FUNCTION (21 of 40 remaining) [2022-07-12 10:13:10,485 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr4ASSERT_VIOLATIONERROR_FUNCTION (20 of 40 remaining) [2022-07-12 10:13:10,485 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr3ASSERT_VIOLATIONERROR_FUNCTION (19 of 40 remaining) [2022-07-12 10:13:10,485 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr5ASSERT_VIOLATIONERROR_FUNCTION (18 of 40 remaining) [2022-07-12 10:13:10,486 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr6ASSERT_VIOLATIONERROR_FUNCTION (17 of 40 remaining) [2022-07-12 10:13:10,486 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr7ASSERT_VIOLATIONERROR_FUNCTION (16 of 40 remaining) [2022-07-12 10:13:10,486 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr10ASSERT_VIOLATIONERROR_FUNCTION (15 of 40 remaining) [2022-07-12 10:13:10,486 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr8ASSERT_VIOLATIONERROR_FUNCTION (14 of 40 remaining) [2022-07-12 10:13:10,486 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr11ASSERT_VIOLATIONERROR_FUNCTION (13 of 40 remaining) [2022-07-12 10:13:10,487 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr9ASSERT_VIOLATIONERROR_FUNCTION (12 of 40 remaining) [2022-07-12 10:13:10,487 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (11 of 40 remaining) [2022-07-12 10:13:10,487 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr1ASSERT_VIOLATIONERROR_FUNCTION (10 of 40 remaining) [2022-07-12 10:13:10,487 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr2ASSERT_VIOLATIONERROR_FUNCTION (9 of 40 remaining) [2022-07-12 10:13:10,488 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr4ASSERT_VIOLATIONERROR_FUNCTION (8 of 40 remaining) [2022-07-12 10:13:10,488 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr3ASSERT_VIOLATIONERROR_FUNCTION (7 of 40 remaining) [2022-07-12 10:13:10,488 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr5ASSERT_VIOLATIONERROR_FUNCTION (6 of 40 remaining) [2022-07-12 10:13:10,488 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr6ASSERT_VIOLATIONERROR_FUNCTION (5 of 40 remaining) [2022-07-12 10:13:10,488 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr7ASSERT_VIOLATIONERROR_FUNCTION (4 of 40 remaining) [2022-07-12 10:13:10,488 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr10ASSERT_VIOLATIONERROR_FUNCTION (3 of 40 remaining) [2022-07-12 10:13:10,488 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr8ASSERT_VIOLATIONERROR_FUNCTION (2 of 40 remaining) [2022-07-12 10:13:10,489 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr11ASSERT_VIOLATIONERROR_FUNCTION (1 of 40 remaining) [2022-07-12 10:13:10,489 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr9ASSERT_VIOLATIONERROR_FUNCTION (0 of 40 remaining) [2022-07-12 10:13:10,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 10:13:10,489 INFO L356 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2022-07-12 10:13:10,491 WARN L231 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-12 10:13:10,491 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-07-12 10:13:10,540 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-07-12 10:13:10,543 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 654 places, 738 transitions, 1494 flow [2022-07-12 10:13:10,800 INFO L129 PetriNetUnfolder]: 159/1289 cut-off events. [2022-07-12 10:13:10,800 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-07-12 10:13:10,820 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1303 conditions, 1289 events. 159/1289 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 5757 event pairs, 0 based on Foata normal form. 0/1057 useless extension candidates. Maximal degree in co-relation 785. Up to 8 conditions per place. [2022-07-12 10:13:10,820 INFO L82 GeneralOperation]: Start removeDead. Operand has 654 places, 738 transitions, 1494 flow [2022-07-12 10:13:10,836 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 654 places, 738 transitions, 1494 flow [2022-07-12 10:13:10,837 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:13:10,837 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@4b78d0f9, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@60eb370d [2022-07-12 10:13:10,837 INFO L358 AbstractCegarLoop]: Starting to check reachability of 52 error locations. [2022-07-12 10:13:10,840 INFO L129 PetriNetUnfolder]: 3/59 cut-off events. [2022-07-12 10:13:10,840 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-12 10:13:10,840 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:13:10,840 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] [2022-07-12 10:13:10,841 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 49 more)] === [2022-07-12 10:13:10,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:13:10,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1256086718, now seen corresponding path program 1 times [2022-07-12 10:13:10,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:13:10,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13104536] [2022-07-12 10:13:10,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:13:10,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:13:10,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:13:10,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:13:10,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:13:10,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13104536] [2022-07-12 10:13:10,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13104536] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:13:10,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:13:10,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:13:10,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448900423] [2022-07-12 10:13:10,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:13:10,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:13:10,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:13:10,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:13:10,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:13:10,864 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 664 out of 738 [2022-07-12 10:13:10,866 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 654 places, 738 transitions, 1494 flow. Second operand has 3 states, 3 states have (on average 665.0) internal successors, (1995), 3 states have internal predecessors, (1995), 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) [2022-07-12 10:13:10,866 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:13:10,866 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 664 of 738 [2022-07-12 10:13:10,866 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:13:11,143 INFO L129 PetriNetUnfolder]: 48/1184 cut-off events. [2022-07-12 10:13:11,143 INFO L130 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2022-07-12 10:13:11,172 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1220 conditions, 1184 events. 48/1184 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 5625 event pairs, 0 based on Foata normal form. 147/1210 useless extension candidates. Maximal degree in co-relation 742. Up to 16 conditions per place. [2022-07-12 10:13:11,181 INFO L132 encePairwiseOnDemand]: 674/738 looper letters, 17 selfloop transitions, 2 changer transitions 0/683 dead transitions. [2022-07-12 10:13:11,181 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 656 places, 683 transitions, 1422 flow [2022-07-12 10:13:11,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:13:11,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:13:11,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2074 transitions. [2022-07-12 10:13:11,185 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9367660343270099 [2022-07-12 10:13:11,185 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2074 transitions. [2022-07-12 10:13:11,185 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2074 transitions. [2022-07-12 10:13:11,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:13:11,186 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2074 transitions. [2022-07-12 10:13:11,193 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 691.3333333333334) internal successors, (2074), 3 states have internal predecessors, (2074), 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) [2022-07-12 10:13:11,196 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 738.0) internal successors, (2952), 4 states have internal predecessors, (2952), 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) [2022-07-12 10:13:11,198 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 738.0) internal successors, (2952), 4 states have internal predecessors, (2952), 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) [2022-07-12 10:13:11,198 INFO L186 Difference]: Start difference. First operand has 654 places, 738 transitions, 1494 flow. Second operand 3 states and 2074 transitions. [2022-07-12 10:13:11,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 656 places, 683 transitions, 1422 flow [2022-07-12 10:13:11,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 656 places, 683 transitions, 1422 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-12 10:13:11,206 INFO L242 Difference]: Finished difference. Result has 657 places, 678 transitions, 1384 flow [2022-07-12 10:13:11,207 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=738, PETRI_DIFFERENCE_MINUEND_FLOW=1372, PETRI_DIFFERENCE_MINUEND_PLACES=654, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=677, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=675, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1384, PETRI_PLACES=657, PETRI_TRANSITIONS=678} [2022-07-12 10:13:11,208 INFO L279 CegarLoopForPetriNet]: 654 programPoint places, 3 predicate places. [2022-07-12 10:13:11,208 INFO L495 AbstractCegarLoop]: Abstraction has has 657 places, 678 transitions, 1384 flow [2022-07-12 10:13:11,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 665.0) internal successors, (1995), 3 states have internal predecessors, (1995), 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) [2022-07-12 10:13:11,209 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:13:11,209 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, 1, 1, 1, 1, 1] [2022-07-12 10:13:11,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 10:13:11,209 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 49 more)] === [2022-07-12 10:13:11,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:13:11,210 INFO L85 PathProgramCache]: Analyzing trace with hash -253852356, now seen corresponding path program 1 times [2022-07-12 10:13:11,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:13:11,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635442370] [2022-07-12 10:13:11,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:13:11,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:13:11,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:13:11,250 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:13:11,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:13:11,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635442370] [2022-07-12 10:13:11,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635442370] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:13:11,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896751771] [2022-07-12 10:13:11,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:13:11,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:13:11,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:13:11,264 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) [2022-07-12 10:13:11,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 10:13:11,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:13:11,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 10:13:11,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:13:11,379 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:13:11,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:13:11,393 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:13:11,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [896751771] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 10:13:11,393 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 10:13:11,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2022-07-12 10:13:11,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591855175] [2022-07-12 10:13:11,394 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 10:13:11,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:13:11,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:13:11,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:13:11,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-07-12 10:13:11,398 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 664 out of 738 [2022-07-12 10:13:11,402 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 657 places, 678 transitions, 1384 flow. Second operand has 6 states, 6 states have (on average 668.0) internal successors, (4008), 6 states have internal predecessors, (4008), 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) [2022-07-12 10:13:11,402 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:13:11,402 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 664 of 738 [2022-07-12 10:13:11,402 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:13:11,644 INFO L129 PetriNetUnfolder]: 48/1193 cut-off events. [2022-07-12 10:13:11,645 INFO L130 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2022-07-12 10:13:11,659 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1244 conditions, 1193 events. 48/1193 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 5615 event pairs, 0 based on Foata normal form. 2/1075 useless extension candidates. Maximal degree in co-relation 1180. Up to 10 conditions per place. [2022-07-12 10:13:11,664 INFO L132 encePairwiseOnDemand]: 734/738 looper letters, 21 selfloop transitions, 5 changer transitions 0/690 dead transitions. [2022-07-12 10:13:11,664 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 661 places, 690 transitions, 1462 flow [2022-07-12 10:13:11,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:13:11,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-12 10:13:11,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3348 transitions. [2022-07-12 10:13:11,669 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9073170731707317 [2022-07-12 10:13:11,669 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3348 transitions. [2022-07-12 10:13:11,669 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3348 transitions. [2022-07-12 10:13:11,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:13:11,671 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3348 transitions. [2022-07-12 10:13:11,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 669.6) internal successors, (3348), 5 states have internal predecessors, (3348), 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) [2022-07-12 10:13:11,680 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 738.0) internal successors, (4428), 6 states have internal predecessors, (4428), 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) [2022-07-12 10:13:11,681 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 738.0) internal successors, (4428), 6 states have internal predecessors, (4428), 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) [2022-07-12 10:13:11,681 INFO L186 Difference]: Start difference. First operand has 657 places, 678 transitions, 1384 flow. Second operand 5 states and 3348 transitions. [2022-07-12 10:13:11,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 661 places, 690 transitions, 1462 flow [2022-07-12 10:13:11,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 660 places, 690 transitions, 1460 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-12 10:13:11,690 INFO L242 Difference]: Finished difference. Result has 663 places, 680 transitions, 1412 flow [2022-07-12 10:13:11,690 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=738, PETRI_DIFFERENCE_MINUEND_FLOW=1382, PETRI_DIFFERENCE_MINUEND_PLACES=656, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=678, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=674, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1412, PETRI_PLACES=663, PETRI_TRANSITIONS=680} [2022-07-12 10:13:11,691 INFO L279 CegarLoopForPetriNet]: 654 programPoint places, 9 predicate places. [2022-07-12 10:13:11,691 INFO L495 AbstractCegarLoop]: Abstraction has has 663 places, 680 transitions, 1412 flow [2022-07-12 10:13:11,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 668.0) internal successors, (4008), 6 states have internal predecessors, (4008), 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) [2022-07-12 10:13:11,692 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:13:11,692 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:13:11,711 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-12 10:13:11,909 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,SelfDestructingSolverStorable5 [2022-07-12 10:13:11,909 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 49 more)] === [2022-07-12 10:13:11,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:13:11,910 INFO L85 PathProgramCache]: Analyzing trace with hash -2092046596, now seen corresponding path program 2 times [2022-07-12 10:13:11,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:13:11,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032828599] [2022-07-12 10:13:11,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:13:11,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:13:11,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:13:11,956 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-12 10:13:11,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:13:11,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032828599] [2022-07-12 10:13:11,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032828599] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:13:11,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:13:11,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 10:13:11,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089500173] [2022-07-12 10:13:11,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:13:11,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 10:13:11,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:13:11,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 10:13:11,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 10:13:11,959 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 667 out of 738 [2022-07-12 10:13:11,961 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 663 places, 680 transitions, 1412 flow. Second operand has 4 states, 4 states have (on average 668.0) internal successors, (2672), 4 states have internal predecessors, (2672), 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) [2022-07-12 10:13:11,961 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:13:11,961 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 667 of 738 [2022-07-12 10:13:11,961 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:13:12,156 INFO L129 PetriNetUnfolder]: 48/1191 cut-off events. [2022-07-12 10:13:12,157 INFO L130 PetriNetUnfolder]: For 31/31 co-relation queries the response was YES. [2022-07-12 10:13:12,176 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1240 conditions, 1191 events. 48/1191 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 5612 event pairs, 0 based on Foata normal form. 0/1072 useless extension candidates. Maximal degree in co-relation 1154. Up to 9 conditions per place. [2022-07-12 10:13:12,181 INFO L132 encePairwiseOnDemand]: 735/738 looper letters, 7 selfloop transitions, 2 changer transitions 0/678 dead transitions. [2022-07-12 10:13:12,181 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 664 places, 678 transitions, 1426 flow [2022-07-12 10:13:12,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 10:13:12,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-12 10:13:12,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2678 transitions. [2022-07-12 10:13:12,185 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9071815718157181 [2022-07-12 10:13:12,186 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2678 transitions. [2022-07-12 10:13:12,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2678 transitions. [2022-07-12 10:13:12,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:13:12,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2678 transitions. [2022-07-12 10:13:12,190 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 669.5) internal successors, (2678), 4 states have internal predecessors, (2678), 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) [2022-07-12 10:13:12,193 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 738.0) internal successors, (3690), 5 states have internal predecessors, (3690), 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) [2022-07-12 10:13:12,193 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 738.0) internal successors, (3690), 5 states have internal predecessors, (3690), 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) [2022-07-12 10:13:12,193 INFO L186 Difference]: Start difference. First operand has 663 places, 680 transitions, 1412 flow. Second operand 4 states and 2678 transitions. [2022-07-12 10:13:12,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 664 places, 678 transitions, 1426 flow [2022-07-12 10:13:12,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 663 places, 678 transitions, 1420 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-07-12 10:13:12,201 INFO L242 Difference]: Finished difference. Result has 663 places, 678 transitions, 1406 flow [2022-07-12 10:13:12,202 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=738, PETRI_DIFFERENCE_MINUEND_FLOW=1402, PETRI_DIFFERENCE_MINUEND_PLACES=660, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=678, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=676, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1406, PETRI_PLACES=663, PETRI_TRANSITIONS=678} [2022-07-12 10:13:12,203 INFO L279 CegarLoopForPetriNet]: 654 programPoint places, 9 predicate places. [2022-07-12 10:13:12,203 INFO L495 AbstractCegarLoop]: Abstraction has has 663 places, 678 transitions, 1406 flow [2022-07-12 10:13:12,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 668.0) internal successors, (2672), 4 states have internal predecessors, (2672), 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) [2022-07-12 10:13:12,203 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:13:12,204 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:13:12,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 10:13:12,204 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 49 more)] === [2022-07-12 10:13:12,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:13:12,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1446004211, now seen corresponding path program 1 times [2022-07-12 10:13:12,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:13:12,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424728841] [2022-07-12 10:13:12,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:13:12,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:13:12,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:13:12,235 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-12 10:13:12,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:13:12,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424728841] [2022-07-12 10:13:12,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424728841] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:13:12,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:13:12,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:13:12,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535272695] [2022-07-12 10:13:12,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:13:12,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:13:12,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:13:12,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:13:12,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:13:12,238 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 666 out of 738 [2022-07-12 10:13:12,239 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 663 places, 678 transitions, 1406 flow. Second operand has 3 states, 3 states have (on average 667.0) internal successors, (2001), 3 states have internal predecessors, (2001), 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) [2022-07-12 10:13:12,239 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:13:12,239 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 666 of 738 [2022-07-12 10:13:12,239 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:13:12,450 INFO L129 PetriNetUnfolder]: 39/997 cut-off events. [2022-07-12 10:13:12,450 INFO L130 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2022-07-12 10:13:12,474 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1055 conditions, 997 events. 39/997 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 4073 event pairs, 0 based on Foata normal form. 0/899 useless extension candidates. Maximal degree in co-relation 970. Up to 16 conditions per place. [2022-07-12 10:13:12,480 INFO L132 encePairwiseOnDemand]: 735/738 looper letters, 13 selfloop transitions, 2 changer transitions 0/682 dead transitions. [2022-07-12 10:13:12,481 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 665 places, 682 transitions, 1444 flow [2022-07-12 10:13:12,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:13:12,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:13:12,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2014 transitions. [2022-07-12 10:13:12,484 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9096657633242999 [2022-07-12 10:13:12,484 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2014 transitions. [2022-07-12 10:13:12,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2014 transitions. [2022-07-12 10:13:12,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:13:12,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2014 transitions. [2022-07-12 10:13:12,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 671.3333333333334) internal successors, (2014), 3 states have internal predecessors, (2014), 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) [2022-07-12 10:13:12,490 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 738.0) internal successors, (2952), 4 states have internal predecessors, (2952), 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) [2022-07-12 10:13:12,491 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 738.0) internal successors, (2952), 4 states have internal predecessors, (2952), 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) [2022-07-12 10:13:12,491 INFO L186 Difference]: Start difference. First operand has 663 places, 678 transitions, 1406 flow. Second operand 3 states and 2014 transitions. [2022-07-12 10:13:12,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 665 places, 682 transitions, 1444 flow [2022-07-12 10:13:12,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 663 places, 682 transitions, 1441 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-12 10:13:12,500 INFO L242 Difference]: Finished difference. Result has 664 places, 679 transitions, 1415 flow [2022-07-12 10:13:12,501 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=738, PETRI_DIFFERENCE_MINUEND_FLOW=1403, PETRI_DIFFERENCE_MINUEND_PLACES=661, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=678, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=676, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1415, PETRI_PLACES=664, PETRI_TRANSITIONS=679} [2022-07-12 10:13:12,502 INFO L279 CegarLoopForPetriNet]: 654 programPoint places, 10 predicate places. [2022-07-12 10:13:12,502 INFO L495 AbstractCegarLoop]: Abstraction has has 664 places, 679 transitions, 1415 flow [2022-07-12 10:13:12,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 667.0) internal successors, (2001), 3 states have internal predecessors, (2001), 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) [2022-07-12 10:13:12,503 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:13:12,503 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:13:12,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 10:13:12,503 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting worker_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 49 more)] === [2022-07-12 10:13:12,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:13:12,504 INFO L85 PathProgramCache]: Analyzing trace with hash -649049766, now seen corresponding path program 1 times [2022-07-12 10:13:12,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:13:12,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330362110] [2022-07-12 10:13:12,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:13:12,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:13:12,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:13:13,169 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-12 10:13:13,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:13:13,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330362110] [2022-07-12 10:13:13,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330362110] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:13:13,170 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:13:13,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-07-12 10:13:13,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034636091] [2022-07-12 10:13:13,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:13:13,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-12 10:13:13,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:13:13,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-12 10:13:13,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2022-07-12 10:13:13,178 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 518 out of 738 [2022-07-12 10:13:13,183 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 664 places, 679 transitions, 1415 flow. Second operand has 17 states, 17 states have (on average 520.8235294117648) internal successors, (8854), 17 states have internal predecessors, (8854), 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) [2022-07-12 10:13:13,184 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:13:13,184 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 518 of 738 [2022-07-12 10:13:13,184 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand