./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 654ba073723c5bebcf706552b3cd58bc95cc07bc71a7e60391f80a16de89dbcb --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 08:47:41,708 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 08:47:41,711 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 08:47:41,754 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 08:47:41,754 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 08:47:41,756 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 08:47:41,761 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 08:47:41,764 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 08:47:41,766 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 08:47:41,768 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 08:47:41,769 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 08:47:41,774 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 08:47:41,775 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 08:47:41,781 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 08:47:41,782 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 08:47:41,786 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 08:47:41,787 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 08:47:41,788 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 08:47:41,790 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 08:47:41,796 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 08:47:41,798 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 08:47:41,799 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 08:47:41,801 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 08:47:41,802 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 08:47:41,804 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 08:47:41,807 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 08:47:41,807 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 08:47:41,808 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 08:47:41,808 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 08:47:41,809 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 08:47:41,810 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 08:47:41,810 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 08:47:41,812 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 08:47:41,813 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 08:47:41,815 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 08:47:41,816 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 08:47:41,816 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 08:47:41,817 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 08:47:41,817 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 08:47:41,817 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 08:47:41,818 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 08:47:41,819 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 08:47:41,820 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 08:47:41,864 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 08:47:41,865 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 08:47:41,865 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 08:47:41,865 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 08:47:41,866 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 08:47:41,866 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 08:47:41,868 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 08:47:41,868 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 08:47:41,868 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 08:47:41,868 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 08:47:41,869 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 08:47:41,869 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 08:47:41,869 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 08:47:41,869 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 08:47:41,869 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 08:47:41,870 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 08:47:41,870 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 08:47:41,870 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 08:47:41,870 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 08:47:41,870 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 08:47:41,871 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 08:47:41,871 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 08:47:41,871 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 08:47:41,871 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 08:47:41,872 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:47:41,872 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 08:47:41,872 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 08:47:41,872 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 08:47:41,872 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 08:47:41,873 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 08:47:41,873 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 08:47:41,873 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 08:47:41,873 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 08:47:41,874 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 654ba073723c5bebcf706552b3cd58bc95cc07bc71a7e60391f80a16de89dbcb [2022-07-21 08:47:42,198 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 08:47:42,225 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 08:47:42,228 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 08:47:42,230 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 08:47:42,231 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 08:47:42,232 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i [2022-07-21 08:47:42,294 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/332b30520/7f76dd7ad09d453793b01091f717d624/FLAGb38e6fbec [2022-07-21 08:47:42,846 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 08:47:42,847 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i [2022-07-21 08:47:42,864 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/332b30520/7f76dd7ad09d453793b01091f717d624/FLAGb38e6fbec [2022-07-21 08:47:43,320 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/332b30520/7f76dd7ad09d453793b01091f717d624 [2022-07-21 08:47:43,324 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 08:47:43,325 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 08:47:43,326 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 08:47:43,327 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 08:47:43,329 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 08:47:43,330 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:47:43" (1/1) ... [2022-07-21 08:47:43,331 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d23d4ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:47:43, skipping insertion in model container [2022-07-21 08:47:43,332 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:47:43" (1/1) ... [2022-07-21 08:47:43,338 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 08:47:43,389 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 08:47:43,517 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-07-21 08:47:43,751 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[30448,30461] [2022-07-21 08:47:43,762 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[30811,30824] [2022-07-21 08:47:43,776 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[31483,31496] [2022-07-21 08:47:43,777 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[31534,31547] [2022-07-21 08:47:43,780 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[31683,31696] [2022-07-21 08:47:43,783 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[31760,31773] [2022-07-21 08:47:43,787 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[31807,31820] [2022-07-21 08:47:43,790 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[31916,31929] [2022-07-21 08:47:43,797 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[32035,32048] [2022-07-21 08:47:43,800 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_twice_2t.i[32083,32096] [2022-07-21 08:47:43,801 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_twice_2t.i[32160,32173] [2022-07-21 08:47:43,803 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_twice_2t.i[32286,32299] [2022-07-21 08:47:43,818 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[32897,32910] [2022-07-21 08:47:43,820 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[32974,32987] [2022-07-21 08:47:43,824 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:47:43,834 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 08:47:43,849 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-07-21 08:47:43,873 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[30448,30461] [2022-07-21 08:47:43,886 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[30811,30824] [2022-07-21 08:47:43,895 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[31483,31496] [2022-07-21 08:47:43,896 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[31534,31547] [2022-07-21 08:47:43,899 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[31683,31696] [2022-07-21 08:47:43,901 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[31760,31773] [2022-07-21 08:47:43,905 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[31807,31820] [2022-07-21 08:47:43,906 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[31916,31929] [2022-07-21 08:47:43,908 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[32035,32048] [2022-07-21 08:47:43,910 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[32083,32096] [2022-07-21 08:47:43,912 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[32160,32173] [2022-07-21 08:47:43,914 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[32286,32299] [2022-07-21 08:47:43,927 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[32897,32910] [2022-07-21 08:47:43,929 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[32974,32987] [2022-07-21 08:47:43,931 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:47:43,972 INFO L208 MainTranslator]: Completed translation [2022-07-21 08:47:43,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:47:43 WrapperNode [2022-07-21 08:47:43,973 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 08:47:43,975 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 08:47:43,975 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 08:47:43,975 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 08:47:43,986 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:47:43" (1/1) ... [2022-07-21 08:47:44,018 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:47:43" (1/1) ... [2022-07-21 08:47:44,063 INFO L137 Inliner]: procedures = 174, calls = 73, calls flagged for inlining = 7, calls inlined = 9, statements flattened = 469 [2022-07-21 08:47:44,065 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 08:47:44,066 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 08:47:44,066 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 08:47:44,067 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 08:47:44,074 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:47:43" (1/1) ... [2022-07-21 08:47:44,075 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:47:43" (1/1) ... [2022-07-21 08:47:44,092 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:47:43" (1/1) ... [2022-07-21 08:47:44,102 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:47:43" (1/1) ... [2022-07-21 08:47:44,127 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:47:43" (1/1) ... [2022-07-21 08:47:44,136 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:47:43" (1/1) ... [2022-07-21 08:47:44,147 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:47:43" (1/1) ... [2022-07-21 08:47:44,152 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 08:47:44,152 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 08:47:44,152 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 08:47:44,152 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 08:47:44,153 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:47:43" (1/1) ... [2022-07-21 08:47:44,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:47:44,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:47:44,183 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) [2022-07-21 08:47:44,195 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 [2022-07-21 08:47:44,222 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 08:47:44,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 08:47:44,222 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-07-21 08:47:44,223 INFO L130 BoogieDeclarations]: Found specification of procedure worker_fn [2022-07-21 08:47:44,223 INFO L138 BoogieDeclarations]: Found implementation of procedure worker_fn [2022-07-21 08:47:44,223 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 08:47:44,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-21 08:47:44,224 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 08:47:44,224 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-21 08:47:44,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 08:47:44,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 08:47:44,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 08:47:44,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 08:47:44,226 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-21 08:47:44,332 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 08:47:44,334 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 08:47:44,953 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 08:47:44,968 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 08:47:44,970 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2022-07-21 08:47:44,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:47:44 BoogieIcfgContainer [2022-07-21 08:47:44,974 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 08:47:44,976 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 08:47:44,976 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 08:47:44,979 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 08:47:44,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 08:47:43" (1/3) ... [2022-07-21 08:47:44,980 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6452b866 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:47:44, skipping insertion in model container [2022-07-21 08:47:44,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:47:43" (2/3) ... [2022-07-21 08:47:44,981 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6452b866 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:47:44, skipping insertion in model container [2022-07-21 08:47:44,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:47:44" (3/3) ... [2022-07-21 08:47:44,982 INFO L111 eAbstractionObserver]: Analyzing ICFG one_time_barrier_twice_2t.i [2022-07-21 08:47:44,990 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-21 08:47:44,999 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 08:47:45,000 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2022-07-21 08:47:45,000 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-21 08:47:45,115 INFO L135 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-07-21 08:47:45,170 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 482 places, 542 transitions, 1092 flow [2022-07-21 08:47:45,451 INFO L129 PetriNetUnfolder]: 95/795 cut-off events. [2022-07-21 08:47:45,451 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-07-21 08:47:45,470 INFO L84 FinitePrefix]: Finished finitePrefix Result has 801 conditions, 795 events. 95/795 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2663 event pairs, 0 based on Foata normal form. 0/655 useless extension candidates. Maximal degree in co-relation 462. Up to 4 conditions per place. [2022-07-21 08:47:45,470 INFO L82 GeneralOperation]: Start removeDead. Operand has 482 places, 542 transitions, 1092 flow [2022-07-21 08:47:45,488 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 482 places, 542 transitions, 1092 flow [2022-07-21 08:47:45,502 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 08:47:45,510 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@65db975, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@243d83f2 [2022-07-21 08:47:45,510 INFO L358 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2022-07-21 08:47:45,517 INFO L129 PetriNetUnfolder]: 3/53 cut-off events. [2022-07-21 08:47:45,518 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-21 08:47:45,518 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:47:45,519 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:47:45,519 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 38 more)] === [2022-07-21 08:47:45,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:47:45,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1884340507, now seen corresponding path program 1 times [2022-07-21 08:47:45,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:47:45,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152374865] [2022-07-21 08:47:45,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:47:45,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:47:45,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:47:45,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:47:45,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:47:45,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152374865] [2022-07-21 08:47:45,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152374865] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:47:45,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:47:45,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:47:45,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196750303] [2022-07-21 08:47:45,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:47:45,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:47:45,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:47:45,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:47:45,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:47:45,860 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 487 out of 542 [2022-07-21 08:47:45,867 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 482 places, 542 transitions, 1092 flow. Second operand has 3 states, 3 states have (on average 488.0) internal successors, (1464), 3 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:45,868 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:47:45,868 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 487 of 542 [2022-07-21 08:47:45,869 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:47:46,075 INFO L129 PetriNetUnfolder]: 28/734 cut-off events. [2022-07-21 08:47:46,076 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-07-21 08:47:46,086 INFO L84 FinitePrefix]: Finished finitePrefix Result has 758 conditions, 734 events. 28/734 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2572 event pairs, 0 based on Foata normal form. 66/727 useless extension candidates. Maximal degree in co-relation 423. Up to 12 conditions per place. [2022-07-21 08:47:46,092 INFO L132 encePairwiseOnDemand]: 495/542 looper letters, 15 selfloop transitions, 2 changer transitions 0/504 dead transitions. [2022-07-21 08:47:46,092 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 484 places, 504 transitions, 1050 flow [2022-07-21 08:47:46,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:47:46,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:47:46,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1524 transitions. [2022-07-21 08:47:46,117 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9372693726937269 [2022-07-21 08:47:46,118 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1524 transitions. [2022-07-21 08:47:46,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1524 transitions. [2022-07-21 08:47:46,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:47:46,125 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1524 transitions. [2022-07-21 08:47:46,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 508.0) internal successors, (1524), 3 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:46,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 542.0) internal successors, (2168), 4 states have internal predecessors, (2168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:46,152 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 542.0) internal successors, (2168), 4 states have internal predecessors, (2168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:46,154 INFO L186 Difference]: Start difference. First operand has 482 places, 542 transitions, 1092 flow. Second operand 3 states and 1524 transitions. [2022-07-21 08:47:46,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 484 places, 504 transitions, 1050 flow [2022-07-21 08:47:46,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 484 places, 504 transitions, 1050 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-21 08:47:46,170 INFO L242 Difference]: Finished difference. Result has 485 places, 499 transitions, 1016 flow [2022-07-21 08:47:46,173 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=542, PETRI_DIFFERENCE_MINUEND_FLOW=1004, PETRI_DIFFERENCE_MINUEND_PLACES=482, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=496, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1016, PETRI_PLACES=485, PETRI_TRANSITIONS=499} [2022-07-21 08:47:46,176 INFO L279 CegarLoopForPetriNet]: 482 programPoint places, 3 predicate places. [2022-07-21 08:47:46,177 INFO L495 AbstractCegarLoop]: Abstraction has has 485 places, 499 transitions, 1016 flow [2022-07-21 08:47:46,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 488.0) internal successors, (1464), 3 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:46,178 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:47:46,178 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:47:46,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 08:47:46,179 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 38 more)] === [2022-07-21 08:47:46,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:47:46,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1789690299, now seen corresponding path program 1 times [2022-07-21 08:47:46,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:47:46,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178332179] [2022-07-21 08:47:46,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:47:46,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:47:46,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:47:46,250 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:47:46,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:47:46,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178332179] [2022-07-21 08:47:46,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178332179] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 08:47:46,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368975833] [2022-07-21 08:47:46,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:47:46,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:47:46,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:47:46,254 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) [2022-07-21 08:47:46,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 08:47:46,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:47:46,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 08:47:46,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 08:47:46,506 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:47:46,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 08:47:46,559 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:47:46,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1368975833] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 08:47:46,560 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 08:47:46,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2022-07-21 08:47:46,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962756354] [2022-07-21 08:47:46,561 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 08:47:46,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 08:47:46,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:47:46,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 08:47:46,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-21 08:47:46,567 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 487 out of 542 [2022-07-21 08:47:46,571 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 485 places, 499 transitions, 1016 flow. Second operand has 5 states, 5 states have (on average 490.2) internal successors, (2451), 5 states have internal predecessors, (2451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:46,571 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:47:46,571 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 487 of 542 [2022-07-21 08:47:46,572 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:47:46,770 INFO L129 PetriNetUnfolder]: 28/736 cut-off events. [2022-07-21 08:47:46,771 INFO L130 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-07-21 08:47:46,781 INFO L84 FinitePrefix]: Finished finitePrefix Result has 768 conditions, 736 events. 28/736 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2562 event pairs, 0 based on Foata normal form. 1/665 useless extension candidates. Maximal degree in co-relation 710. Up to 7 conditions per place. [2022-07-21 08:47:46,785 INFO L132 encePairwiseOnDemand]: 538/542 looper letters, 14 selfloop transitions, 4 changer transitions 0/505 dead transitions. [2022-07-21 08:47:46,786 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 488 places, 505 transitions, 1064 flow [2022-07-21 08:47:46,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 08:47:46,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-21 08:47:46,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1967 transitions. [2022-07-21 08:47:46,791 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9072878228782287 [2022-07-21 08:47:46,791 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1967 transitions. [2022-07-21 08:47:46,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1967 transitions. [2022-07-21 08:47:46,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:47:46,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1967 transitions. [2022-07-21 08:47:46,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 491.75) internal successors, (1967), 4 states have internal predecessors, (1967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:46,801 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 542.0) internal successors, (2710), 5 states have internal predecessors, (2710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:46,803 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 542.0) internal successors, (2710), 5 states have internal predecessors, (2710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:46,803 INFO L186 Difference]: Start difference. First operand has 485 places, 499 transitions, 1016 flow. Second operand 4 states and 1967 transitions. [2022-07-21 08:47:46,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 488 places, 505 transitions, 1064 flow [2022-07-21 08:47:46,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 487 places, 505 transitions, 1062 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-21 08:47:46,814 INFO L242 Difference]: Finished difference. Result has 489 places, 500 transitions, 1034 flow [2022-07-21 08:47:46,815 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=542, PETRI_DIFFERENCE_MINUEND_FLOW=1014, PETRI_DIFFERENCE_MINUEND_PLACES=484, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=499, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=495, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1034, PETRI_PLACES=489, PETRI_TRANSITIONS=500} [2022-07-21 08:47:46,816 INFO L279 CegarLoopForPetriNet]: 482 programPoint places, 7 predicate places. [2022-07-21 08:47:46,816 INFO L495 AbstractCegarLoop]: Abstraction has has 489 places, 500 transitions, 1034 flow [2022-07-21 08:47:46,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 490.2) internal successors, (2451), 5 states have internal predecessors, (2451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:46,818 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:47:46,819 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:47:46,846 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-21 08:47:47,044 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 [2022-07-21 08:47:47,045 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 38 more)] === [2022-07-21 08:47:47,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:47:47,046 INFO L85 PathProgramCache]: Analyzing trace with hash -229323493, now seen corresponding path program 2 times [2022-07-21 08:47:47,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:47:47,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192351173] [2022-07-21 08:47:47,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:47:47,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:47:47,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:47:47,154 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-21 08:47:47,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:47:47,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192351173] [2022-07-21 08:47:47,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192351173] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:47:47,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:47:47,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 08:47:47,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528805613] [2022-07-21 08:47:47,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:47:47,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 08:47:47,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:47:47,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 08:47:47,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 08:47:47,160 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 484 out of 542 [2022-07-21 08:47:47,163 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 489 places, 500 transitions, 1034 flow. Second operand has 4 states, 4 states have (on average 485.0) internal successors, (1940), 4 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:47,163 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:47:47,163 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 484 of 542 [2022-07-21 08:47:47,163 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:47:47,335 INFO L129 PetriNetUnfolder]: 28/732 cut-off events. [2022-07-21 08:47:47,341 INFO L130 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2022-07-21 08:47:47,351 INFO L84 FinitePrefix]: Finished finitePrefix Result has 768 conditions, 732 events. 28/732 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2555 event pairs, 0 based on Foata normal form. 0/662 useless extension candidates. Maximal degree in co-relation 700. Up to 9 conditions per place. [2022-07-21 08:47:47,356 INFO L132 encePairwiseOnDemand]: 536/542 looper letters, 8 selfloop transitions, 4 changer transitions 0/496 dead transitions. [2022-07-21 08:47:47,357 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 488 places, 496 transitions, 1050 flow [2022-07-21 08:47:47,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 08:47:47,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-21 08:47:47,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1950 transitions. [2022-07-21 08:47:47,363 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8994464944649446 [2022-07-21 08:47:47,363 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1950 transitions. [2022-07-21 08:47:47,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1950 transitions. [2022-07-21 08:47:47,365 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:47:47,365 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1950 transitions. [2022-07-21 08:47:47,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 487.5) internal successors, (1950), 4 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:47,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 542.0) internal successors, (2710), 5 states have internal predecessors, (2710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:47,376 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 542.0) internal successors, (2710), 5 states have internal predecessors, (2710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:47,377 INFO L186 Difference]: Start difference. First operand has 489 places, 500 transitions, 1034 flow. Second operand 4 states and 1950 transitions. [2022-07-21 08:47:47,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 488 places, 496 transitions, 1050 flow [2022-07-21 08:47:47,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 487 places, 496 transitions, 1046 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-07-21 08:47:47,388 INFO L242 Difference]: Finished difference. Result has 487 places, 496 transitions, 1030 flow [2022-07-21 08:47:47,390 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=542, PETRI_DIFFERENCE_MINUEND_FLOW=1022, PETRI_DIFFERENCE_MINUEND_PLACES=484, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=496, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=492, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1030, PETRI_PLACES=487, PETRI_TRANSITIONS=496} [2022-07-21 08:47:47,392 INFO L279 CegarLoopForPetriNet]: 482 programPoint places, 5 predicate places. [2022-07-21 08:47:47,392 INFO L495 AbstractCegarLoop]: Abstraction has has 487 places, 496 transitions, 1030 flow [2022-07-21 08:47:47,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 485.0) internal successors, (1940), 4 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:47,394 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:47:47,397 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:47:47,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 08:47:47,398 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 38 more)] === [2022-07-21 08:47:47,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:47:47,398 INFO L85 PathProgramCache]: Analyzing trace with hash -305101375, now seen corresponding path program 1 times [2022-07-21 08:47:47,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:47:47,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189483713] [2022-07-21 08:47:47,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:47:47,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:47:47,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:47:47,575 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-21 08:47:47,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:47:47,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189483713] [2022-07-21 08:47:47,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189483713] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 08:47:47,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203839584] [2022-07-21 08:47:47,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:47:47,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:47:47,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:47:47,578 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) [2022-07-21 08:47:47,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 08:47:47,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:47:47,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 08:47:47,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 08:47:47,767 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-21 08:47:47,767 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 08:47:47,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [203839584] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:47:47,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 08:47:47,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2022-07-21 08:47:47,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686221223] [2022-07-21 08:47:47,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:47:47,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 08:47:47,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:47:47,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 08:47:47,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 08:47:47,773 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 489 out of 542 [2022-07-21 08:47:47,775 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 487 places, 496 transitions, 1030 flow. Second operand has 4 states, 4 states have (on average 491.25) internal successors, (1965), 4 states have internal predecessors, (1965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:47,775 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:47:47,775 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 489 of 542 [2022-07-21 08:47:47,775 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:47:47,914 INFO L129 PetriNetUnfolder]: 28/727 cut-off events. [2022-07-21 08:47:47,914 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-07-21 08:47:47,925 INFO L84 FinitePrefix]: Finished finitePrefix Result has 763 conditions, 727 events. 28/727 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2517 event pairs, 0 based on Foata normal form. 0/658 useless extension candidates. Maximal degree in co-relation 695. Up to 5 conditions per place. [2022-07-21 08:47:47,930 INFO L132 encePairwiseOnDemand]: 538/542 looper letters, 7 selfloop transitions, 3 changer transitions 0/496 dead transitions. [2022-07-21 08:47:47,930 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 489 places, 496 transitions, 1048 flow [2022-07-21 08:47:47,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 08:47:47,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-21 08:47:47,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1967 transitions. [2022-07-21 08:47:47,935 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9072878228782287 [2022-07-21 08:47:47,935 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1967 transitions. [2022-07-21 08:47:47,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1967 transitions. [2022-07-21 08:47:47,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:47:47,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1967 transitions. [2022-07-21 08:47:47,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 491.75) internal successors, (1967), 4 states have internal predecessors, (1967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:47,945 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 542.0) internal successors, (2710), 5 states have internal predecessors, (2710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:47,946 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 542.0) internal successors, (2710), 5 states have internal predecessors, (2710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:47,947 INFO L186 Difference]: Start difference. First operand has 487 places, 496 transitions, 1030 flow. Second operand 4 states and 1967 transitions. [2022-07-21 08:47:47,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 489 places, 496 transitions, 1048 flow [2022-07-21 08:47:47,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 484 places, 496 transitions, 1036 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-07-21 08:47:47,957 INFO L242 Difference]: Finished difference. Result has 486 places, 496 transitions, 1031 flow [2022-07-21 08:47:47,958 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=542, PETRI_DIFFERENCE_MINUEND_FLOW=1014, PETRI_DIFFERENCE_MINUEND_PLACES=481, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=495, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=492, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1031, PETRI_PLACES=486, PETRI_TRANSITIONS=496} [2022-07-21 08:47:47,959 INFO L279 CegarLoopForPetriNet]: 482 programPoint places, 4 predicate places. [2022-07-21 08:47:47,959 INFO L495 AbstractCegarLoop]: Abstraction has has 486 places, 496 transitions, 1031 flow [2022-07-21 08:47:47,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 491.25) internal successors, (1965), 4 states have internal predecessors, (1965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:47,961 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:47:47,961 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:47:47,982 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-21 08:47:48,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-07-21 08:47:48,171 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 38 more)] === [2022-07-21 08:47:48,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:47:48,171 INFO L85 PathProgramCache]: Analyzing trace with hash 47514415, now seen corresponding path program 1 times [2022-07-21 08:47:48,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:47:48,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453349269] [2022-07-21 08:47:48,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:47:48,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:47:48,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:47:48,239 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-21 08:47:48,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:47:48,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453349269] [2022-07-21 08:47:48,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453349269] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:47:48,239 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:47:48,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:47:48,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658370223] [2022-07-21 08:47:48,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:47:48,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:47:48,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:47:48,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:47:48,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:47:48,243 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 489 out of 542 [2022-07-21 08:47:48,245 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 486 places, 496 transitions, 1031 flow. Second operand has 3 states, 3 states have (on average 490.0) internal successors, (1470), 3 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:48,245 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:47:48,245 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 489 of 542 [2022-07-21 08:47:48,245 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:47:48,355 INFO L129 PetriNetUnfolder]: 19/533 cut-off events. [2022-07-21 08:47:48,355 INFO L130 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2022-07-21 08:47:48,364 INFO L84 FinitePrefix]: Finished finitePrefix Result has 568 conditions, 533 events. 19/533 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1136 event pairs, 0 based on Foata normal form. 1/486 useless extension candidates. Maximal degree in co-relation 499. Up to 5 conditions per place. [2022-07-21 08:47:48,368 INFO L132 encePairwiseOnDemand]: 539/542 looper letters, 7 selfloop transitions, 2 changer transitions 0/495 dead transitions. [2022-07-21 08:47:48,368 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 488 places, 495 transitions, 1043 flow [2022-07-21 08:47:48,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:47:48,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:47:48,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1477 transitions. [2022-07-21 08:47:48,372 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9083640836408364 [2022-07-21 08:47:48,372 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1477 transitions. [2022-07-21 08:47:48,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1477 transitions. [2022-07-21 08:47:48,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:47:48,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1477 transitions. [2022-07-21 08:47:48,376 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 492.3333333333333) internal successors, (1477), 3 states have internal predecessors, (1477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:48,380 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 542.0) internal successors, (2168), 4 states have internal predecessors, (2168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:48,381 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 542.0) internal successors, (2168), 4 states have internal predecessors, (2168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:48,381 INFO L186 Difference]: Start difference. First operand has 486 places, 496 transitions, 1031 flow. Second operand 3 states and 1477 transitions. [2022-07-21 08:47:48,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 488 places, 495 transitions, 1043 flow [2022-07-21 08:47:48,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 486 places, 495 transitions, 1040 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-21 08:47:48,391 INFO L242 Difference]: Finished difference. Result has 486 places, 495 transitions, 1026 flow [2022-07-21 08:47:48,391 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=542, PETRI_DIFFERENCE_MINUEND_FLOW=1022, PETRI_DIFFERENCE_MINUEND_PLACES=484, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=495, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=493, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1026, PETRI_PLACES=486, PETRI_TRANSITIONS=495} [2022-07-21 08:47:48,392 INFO L279 CegarLoopForPetriNet]: 482 programPoint places, 4 predicate places. [2022-07-21 08:47:48,392 INFO L495 AbstractCegarLoop]: Abstraction has has 486 places, 495 transitions, 1026 flow [2022-07-21 08:47:48,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 490.0) internal successors, (1470), 3 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:48,394 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:47:48,394 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:47:48,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 08:47:48,394 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting worker_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 38 more)] === [2022-07-21 08:47:48,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:47:48,395 INFO L85 PathProgramCache]: Analyzing trace with hash 267906197, now seen corresponding path program 1 times [2022-07-21 08:47:48,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:47:48,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874354769] [2022-07-21 08:47:48,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:47:48,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:47:48,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:47:49,527 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-21 08:47:49,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:47:49,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874354769] [2022-07-21 08:47:49,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874354769] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:47:49,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:47:49,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-07-21 08:47:49,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790372094] [2022-07-21 08:47:49,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:47:49,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-21 08:47:49,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:47:49,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-21 08:47:49,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=316, Unknown=0, NotChecked=0, Total=420 [2022-07-21 08:47:49,542 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 369 out of 542 [2022-07-21 08:47:49,559 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 486 places, 495 transitions, 1026 flow. Second operand has 21 states, 21 states have (on average 371.3809523809524) internal successors, (7799), 21 states have internal predecessors, (7799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:49,559 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:47:49,560 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 369 of 542 [2022-07-21 08:47:49,560 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:47:52,468 INFO L129 PetriNetUnfolder]: 2475/12019 cut-off events. [2022-07-21 08:47:52,468 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-07-21 08:47:52,509 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16148 conditions, 12019 events. 2475/12019 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 118244 event pairs, 976 based on Foata normal form. 0/10727 useless extension candidates. Maximal degree in co-relation 16048. Up to 2878 conditions per place. [2022-07-21 08:47:52,554 INFO L132 encePairwiseOnDemand]: 521/542 looper letters, 234 selfloop transitions, 24 changer transitions 0/624 dead transitions. [2022-07-21 08:47:52,554 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 501 places, 624 transitions, 1800 flow [2022-07-21 08:47:52,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 08:47:52,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-21 08:47:52,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 6166 transitions. [2022-07-21 08:47:52,566 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7110239852398524 [2022-07-21 08:47:52,566 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 6166 transitions. [2022-07-21 08:47:52,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 6166 transitions. [2022-07-21 08:47:52,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:47:52,570 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 6166 transitions. [2022-07-21 08:47:52,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 385.375) internal successors, (6166), 16 states have internal predecessors, (6166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:52,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 542.0) internal successors, (9214), 17 states have internal predecessors, (9214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:52,597 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 542.0) internal successors, (9214), 17 states have internal predecessors, (9214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:52,598 INFO L186 Difference]: Start difference. First operand has 486 places, 495 transitions, 1026 flow. Second operand 16 states and 6166 transitions. [2022-07-21 08:47:52,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 501 places, 624 transitions, 1800 flow [2022-07-21 08:47:52,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 499 places, 624 transitions, 1796 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-21 08:47:52,610 INFO L242 Difference]: Finished difference. Result has 504 places, 506 transitions, 1134 flow [2022-07-21 08:47:52,611 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=542, PETRI_DIFFERENCE_MINUEND_FLOW=1022, PETRI_DIFFERENCE_MINUEND_PLACES=484, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=495, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=476, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1134, PETRI_PLACES=504, PETRI_TRANSITIONS=506} [2022-07-21 08:47:52,612 INFO L279 CegarLoopForPetriNet]: 482 programPoint places, 22 predicate places. [2022-07-21 08:47:52,612 INFO L495 AbstractCegarLoop]: Abstraction has has 504 places, 506 transitions, 1134 flow [2022-07-21 08:47:52,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 371.3809523809524) internal successors, (7799), 21 states have internal predecessors, (7799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:52,616 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:47:52,616 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:47:52,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 08:47:52,616 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting worker_fnErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 38 more)] === [2022-07-21 08:47:52,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:47:52,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1146631376, now seen corresponding path program 1 times [2022-07-21 08:47:52,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:47:52,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224609643] [2022-07-21 08:47:52,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:47:52,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:47:52,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:47:53,614 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-21 08:47:53,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:47:53,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224609643] [2022-07-21 08:47:53,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224609643] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:47:53,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:47:53,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-07-21 08:47:53,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324471035] [2022-07-21 08:47:53,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:47:53,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-21 08:47:53,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:47:53,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-21 08:47:53,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=316, Unknown=0, NotChecked=0, Total=420 [2022-07-21 08:47:53,624 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 369 out of 542 [2022-07-21 08:47:53,630 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 506 transitions, 1134 flow. Second operand has 21 states, 21 states have (on average 371.42857142857144) internal successors, (7800), 21 states have internal predecessors, (7800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:53,630 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:47:53,630 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 369 of 542 [2022-07-21 08:47:53,631 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:47:56,073 INFO L129 PetriNetUnfolder]: 2501/12492 cut-off events. [2022-07-21 08:47:56,073 INFO L130 PetriNetUnfolder]: For 505/505 co-relation queries the response was YES. [2022-07-21 08:47:56,144 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17256 conditions, 12492 events. 2501/12492 cut-off events. For 505/505 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 123775 event pairs, 1016 based on Foata normal form. 0/11216 useless extension candidates. Maximal degree in co-relation 17144. Up to 2929 conditions per place. [2022-07-21 08:47:56,195 INFO L132 encePairwiseOnDemand]: 522/542 looper letters, 234 selfloop transitions, 26 changer transitions 0/629 dead transitions. [2022-07-21 08:47:56,196 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 629 transitions, 1921 flow [2022-07-21 08:47:56,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 08:47:56,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-21 08:47:56,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 6165 transitions. [2022-07-21 08:47:56,208 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7109086715867159 [2022-07-21 08:47:56,209 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 6165 transitions. [2022-07-21 08:47:56,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 6165 transitions. [2022-07-21 08:47:56,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:47:56,213 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 6165 transitions. [2022-07-21 08:47:56,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 385.3125) internal successors, (6165), 16 states have internal predecessors, (6165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:56,239 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 542.0) internal successors, (9214), 17 states have internal predecessors, (9214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:56,241 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 542.0) internal successors, (9214), 17 states have internal predecessors, (9214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:56,242 INFO L186 Difference]: Start difference. First operand has 504 places, 506 transitions, 1134 flow. Second operand 16 states and 6165 transitions. [2022-07-21 08:47:56,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 629 transitions, 1921 flow [2022-07-21 08:47:56,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 510 places, 629 transitions, 1897 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-07-21 08:47:56,257 INFO L242 Difference]: Finished difference. Result has 514 places, 512 transitions, 1207 flow [2022-07-21 08:47:56,258 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=542, PETRI_DIFFERENCE_MINUEND_FLOW=1111, PETRI_DIFFERENCE_MINUEND_PLACES=495, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=506, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=484, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1207, PETRI_PLACES=514, PETRI_TRANSITIONS=512} [2022-07-21 08:47:56,259 INFO L279 CegarLoopForPetriNet]: 482 programPoint places, 32 predicate places. [2022-07-21 08:47:56,259 INFO L495 AbstractCegarLoop]: Abstraction has has 514 places, 512 transitions, 1207 flow [2022-07-21 08:47:56,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 371.42857142857144) internal successors, (7800), 21 states have internal predecessors, (7800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:56,262 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:47:56,262 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:47:56,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 08:47:56,262 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting worker_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 38 more)] === [2022-07-21 08:47:56,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:47:56,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1809153885, now seen corresponding path program 1 times [2022-07-21 08:47:56,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:47:56,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212981821] [2022-07-21 08:47:56,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:47:56,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:47:56,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:47:59,342 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:47:59,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:47:59,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212981821] [2022-07-21 08:47:59,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212981821] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 08:47:59,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118891352] [2022-07-21 08:47:59,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:47:59,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:47:59,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:47:59,350 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 08:47:59,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-21 08:47:59,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:47:59,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 73 conjunts are in the unsatisfiable core [2022-07-21 08:47:59,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 08:48:00,144 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-07-21 08:48:00,145 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2022-07-21 08:48:00,266 INFO L356 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-07-21 08:48:00,267 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 27 treesize of output 45 [2022-07-21 08:48:00,448 INFO L356 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-07-21 08:48:00,448 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 32 treesize of output 57 [2022-07-21 08:48:00,678 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 33 [2022-07-21 08:48:00,761 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 33 [2022-07-21 08:48:00,807 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 33 [2022-07-21 08:48:01,098 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 33 [2022-07-21 08:48:01,126 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 33 [2022-07-21 08:48:01,214 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 33 [2022-07-21 08:48:01,911 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 33 [2022-07-21 08:48:01,965 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 33 [2022-07-21 08:48:02,888 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 33 [2022-07-21 08:48:02,955 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 33 [2022-07-21 08:48:03,298 INFO L356 Elim1Store]: treesize reduction 16, result has 51.5 percent of original size [2022-07-21 08:48:03,298 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 32 [2022-07-21 08:48:03,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 08:48:03,565 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 44 [2022-07-21 08:48:03,754 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 33 [2022-07-21 08:48:04,265 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2022-07-21 08:48:04,270 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-21 08:48:04,270 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 08:48:04,618 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_695 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_~#pre~0.base| v_ArrVal_695))) (let ((.cse1 (select .cse0 |c_~#in~0.base|))) (or (not (<= (mod (select (select .cse0 |c_~#post~0.base|) |c_~#post~0.offset|) 256) 0)) (not (<= (mod (select .cse1 |c_~#in~0.offset|) 256) 0)) (= (mod (select .cse1 (+ |c_~#in~0.offset| 1)) 256) 0))))) is different from false [2022-07-21 08:48:04,770 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_694 Int) (v_ArrVal_695 (Array Int Int))) (let ((.cse0 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#worker~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#worker~0#1.base|) (+ |c_ULTIMATE.start_main_~#worker~0#1.offset| (* |c_ULTIMATE.start_main_~i~5#1| 4)) v_ArrVal_694)) |c_~#pre~0.base| v_ArrVal_695))) (let ((.cse1 (select .cse0 |c_~#in~0.base|))) (or (not (<= (mod (select (select .cse0 |c_~#post~0.base|) |c_~#post~0.offset|) 256) 0)) (= (mod (select .cse1 (+ |c_~#in~0.offset| 1)) 256) 0) (not (<= (mod (select .cse1 |c_~#in~0.offset|) 256) 0)))))) is different from false [2022-07-21 08:48:04,886 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~5#1_12| Int)) (or (not (<= |v_ULTIMATE.start_main_~i~5#1_12| 0)) (forall ((v_ArrVal_694 Int) (v_ArrVal_695 (Array Int Int))) (let ((.cse1 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#worker~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#worker~0#1.base|) (+ |c_ULTIMATE.start_main_~#worker~0#1.offset| (* |v_ULTIMATE.start_main_~i~5#1_12| 4)) v_ArrVal_694)) |c_~#pre~0.base| v_ArrVal_695))) (let ((.cse0 (select .cse1 |c_~#in~0.base|))) (or (= (mod (select .cse0 (+ |c_~#in~0.offset| 1)) 256) 0) (not (<= (mod (select .cse0 |c_~#in~0.offset|) 256) 0)) (not (<= (mod (select (select .cse1 |c_~#post~0.base|) |c_~#post~0.offset|) 256) 0)))))))) is different from false [2022-07-21 08:48:09,263 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 08:48:09,264 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 08:48:09,267 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 08:48:09,267 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 08:48:09,268 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 08:48:09,270 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 08:48:09,285 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 08:48:09,321 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 08:48:09,322 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 42184 treesize of output 41550 [2022-07-21 08:48:09,565 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 08:48:09,596 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 08:48:09,597 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 41514 treesize of output 38456 [2022-07-21 08:48:09,834 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 08:48:09,836 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38380 treesize of output 37612 [2022-07-21 08:48:10,036 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 08:48:10,038 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42348 treesize of output 41388 [2022-07-21 08:48:10,293 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 08:48:10,295 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41388 treesize of output 41004