./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-divine/one_time_barrier_twice_3t.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-divine/one_time_barrier_twice_3t.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f7efed4227021db06f22a3abd4d1096de1449b086dcfb78e041156858b4360a4 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 10:13:08,065 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 10:13:08,093 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 10:13:08,118 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 10:13:08,123 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 10:13:08,124 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 10:13:08,125 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 10:13:08,132 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 10:13:08,134 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 10:13:08,134 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 10:13:08,135 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 10:13:08,136 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 10:13:08,136 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 10:13:08,137 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 10:13:08,152 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 10:13:08,153 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 10:13:08,154 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 10:13:08,154 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 10:13:08,155 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 10:13:08,157 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 10:13:08,158 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 10:13:08,159 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 10:13:08,160 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 10:13:08,161 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 10:13:08,161 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 10:13:08,163 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 10:13:08,167 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 10:13:08,167 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 10:13:08,168 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 10:13:08,168 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 10:13:08,169 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 10:13:08,169 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 10:13:08,170 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 10:13:08,171 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 10:13:08,172 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 10:13:08,173 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 10:13:08,173 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 10:13:08,174 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 10:13:08,174 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 10:13:08,175 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 10:13:08,175 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 10:13:08,176 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 10:13:08,178 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 10:13:08,200 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 10:13:08,201 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 10:13:08,201 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 10:13:08,201 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 10:13:08,202 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 10:13:08,202 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 10:13:08,203 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 10:13:08,203 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 10:13:08,203 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 10:13:08,204 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 10:13:08,204 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 10:13:08,204 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 10:13:08,204 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 10:13:08,204 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 10:13:08,204 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 10:13:08,205 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 10:13:08,205 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 10:13:08,205 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 10:13:08,205 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 10:13:08,206 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 10:13:08,206 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 10:13:08,207 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 10:13:08,207 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 10:13:08,207 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 10:13:08,207 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:13:08,207 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 10:13:08,207 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 10:13:08,208 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 10:13:08,208 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 10:13:08,208 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 10:13:08,208 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 10:13:08,209 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 10:13:08,209 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 10:13:08,209 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f7efed4227021db06f22a3abd4d1096de1449b086dcfb78e041156858b4360a4 [2022-07-12 10:13:08,379 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 10:13:08,410 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 10:13:08,412 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 10:13:08,413 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 10:13:08,414 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 10:13:08,415 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-divine/one_time_barrier_twice_3t.i [2022-07-12 10:13:08,465 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66f8dec10/a89a86327f434e8ab11d798fcda33f8b/FLAG2521a1dcc [2022-07-12 10:13:08,944 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 10:13:08,945 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_3t.i [2022-07-12 10:13:08,967 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66f8dec10/a89a86327f434e8ab11d798fcda33f8b/FLAG2521a1dcc [2022-07-12 10:13:09,329 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66f8dec10/a89a86327f434e8ab11d798fcda33f8b [2022-07-12 10:13:09,331 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 10:13:09,332 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 10:13:09,345 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 10:13:09,346 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 10:13:09,348 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 10:13:09,349 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:13:09" (1/1) ... [2022-07-12 10:13:09,349 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66c22781 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:13:09, skipping insertion in model container [2022-07-12 10:13:09,350 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:13:09" (1/1) ... [2022-07-12 10:13:09,354 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 10:13:09,401 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 10:13:09,557 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-07-12 10:13:09,698 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_3t.i[30448,30461] [2022-07-12 10:13:09,707 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_3t.i[30811,30824] [2022-07-12 10:13:09,718 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_3t.i[31483,31496] [2022-07-12 10:13:09,719 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_3t.i[31534,31547] [2022-07-12 10:13:09,722 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_3t.i[31683,31696] [2022-07-12 10:13:09,723 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_3t.i[31760,31773] [2022-07-12 10:13:09,726 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_3t.i[31807,31820] [2022-07-12 10:13:09,728 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_3t.i[31916,31929] [2022-07-12 10:13:09,731 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_3t.i[32035,32048] [2022-07-12 10:13:09,731 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_3t.i[32083,32096] [2022-07-12 10:13:09,733 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_3t.i[32160,32173] [2022-07-12 10:13:09,735 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_3t.i[32286,32299] [2022-07-12 10:13:09,745 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_3t.i[32897,32910] [2022-07-12 10:13:09,748 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_3t.i[32974,32987] [2022-07-12 10:13:09,749 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:13:09,757 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 10:13:09,768 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-07-12 10:13:09,791 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_3t.i[30448,30461] [2022-07-12 10:13:09,797 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_3t.i[30811,30824] [2022-07-12 10:13:09,803 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_3t.i[31483,31496] [2022-07-12 10:13:09,804 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_3t.i[31534,31547] [2022-07-12 10:13:09,806 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_3t.i[31683,31696] [2022-07-12 10:13:09,808 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_3t.i[31760,31773] [2022-07-12 10:13:09,810 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_3t.i[31807,31820] [2022-07-12 10:13:09,811 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_3t.i[31916,31929] [2022-07-12 10:13:09,812 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_3t.i[32035,32048] [2022-07-12 10:13:09,814 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_3t.i[32083,32096] [2022-07-12 10:13:09,815 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_3t.i[32160,32173] [2022-07-12 10:13:09,816 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_3t.i[32286,32299] [2022-07-12 10:13:09,822 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_3t.i[32897,32910] [2022-07-12 10:13:09,832 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_3t.i[32974,32987] [2022-07-12 10:13:09,832 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:13:09,864 INFO L208 MainTranslator]: Completed translation [2022-07-12 10:13:09,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:13:09 WrapperNode [2022-07-12 10:13:09,865 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 10:13:09,866 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 10:13:09,866 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 10:13:09,866 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 10:13:09,872 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:13:09" (1/1) ... [2022-07-12 10:13:09,897 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:13:09" (1/1) ... [2022-07-12 10:13:09,952 INFO L137 Inliner]: procedures = 174, calls = 78, calls flagged for inlining = 7, calls inlined = 9, statements flattened = 474 [2022-07-12 10:13:09,955 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 10:13:09,956 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 10:13:09,957 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 10:13:09,957 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 10:13:09,963 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:13:09" (1/1) ... [2022-07-12 10:13:09,963 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:13:09" (1/1) ... [2022-07-12 10:13:09,975 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:13:09" (1/1) ... [2022-07-12 10:13:09,976 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:13:09" (1/1) ... [2022-07-12 10:13:09,987 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:13:09" (1/1) ... [2022-07-12 10:13:09,993 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:13:09" (1/1) ... [2022-07-12 10:13:09,995 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:13:09" (1/1) ... [2022-07-12 10:13:09,999 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 10:13:09,999 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 10:13:09,999 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 10:13:09,999 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 10:13:10,016 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:13:09" (1/1) ... [2022-07-12 10:13:10,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:13:10,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:13:10,076 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 10:13:10,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 10:13:10,110 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 10:13:10,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 10:13:10,110 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-07-12 10:13:10,110 INFO L130 BoogieDeclarations]: Found specification of procedure worker_fn [2022-07-12 10:13:10,110 INFO L138 BoogieDeclarations]: Found implementation of procedure worker_fn [2022-07-12 10:13:10,110 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 10:13:10,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-12 10:13:10,111 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 10:13:10,111 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-12 10:13:10,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 10:13:10,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 10:13:10,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 10:13:10,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 10:13:10,112 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-12 10:13:10,259 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 10:13:10,261 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 10:13:10,746 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 10:13:10,754 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 10:13:10,755 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2022-07-12 10:13:10,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:13:10 BoogieIcfgContainer [2022-07-12 10:13:10,757 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 10:13:10,758 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 10:13:10,758 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 10:13:10,760 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 10:13:10,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 10:13:09" (1/3) ... [2022-07-12 10:13:10,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4318c9be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:13:10, skipping insertion in model container [2022-07-12 10:13:10,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:13:09" (2/3) ... [2022-07-12 10:13:10,762 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4318c9be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:13:10, skipping insertion in model container [2022-07-12 10:13:10,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:13:10" (3/3) ... [2022-07-12 10:13:10,763 INFO L111 eAbstractionObserver]: Analyzing ICFG one_time_barrier_twice_3t.i [2022-07-12 10:13:10,766 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-12 10:13:10,773 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 10:13:10,773 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2022-07-12 10:13:10,773 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-12 10:13:10,841 INFO L135 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-07-12 10:13:10,870 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 487 places, 547 transitions, 1102 flow [2022-07-12 10:13:11,028 INFO L129 PetriNetUnfolder]: 95/800 cut-off events. [2022-07-12 10:13:11,028 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-07-12 10:13:11,041 INFO L84 FinitePrefix]: Finished finitePrefix Result has 806 conditions, 800 events. 95/800 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2667 event pairs, 0 based on Foata normal form. 0/660 useless extension candidates. Maximal degree in co-relation 462. Up to 4 conditions per place. [2022-07-12 10:13:11,041 INFO L82 GeneralOperation]: Start removeDead. Operand has 487 places, 547 transitions, 1102 flow [2022-07-12 10:13:11,052 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 487 places, 547 transitions, 1102 flow [2022-07-12 10:13:11,059 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:13:11,063 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@5ab7e12d, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4241d0ea [2022-07-12 10:13:11,064 INFO L358 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2022-07-12 10:13:11,068 INFO L129 PetriNetUnfolder]: 3/59 cut-off events. [2022-07-12 10:13:11,068 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-12 10:13:11,068 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:13:11,069 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:13:11,069 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)] === [2022-07-12 10:13:11,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:13:11,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1462215394, now seen corresponding path program 1 times [2022-07-12 10:13:11,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:13:11,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901551851] [2022-07-12 10:13:11,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:13:11,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:13:11,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:13:11,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:13:11,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:13:11,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901551851] [2022-07-12 10:13:11,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901551851] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:13:11,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:13:11,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 10:13:11,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458022822] [2022-07-12 10:13:11,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:13:11,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 10:13:11,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:13:11,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 10:13:11,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 10:13:11,329 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 501 out of 547 [2022-07-12 10:13:11,336 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 487 places, 547 transitions, 1102 flow. Second operand has 2 states, 2 states have (on average 501.5) internal successors, (1003), 2 states have internal predecessors, (1003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:13:11,338 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:13:11,338 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 501 of 547 [2022-07-12 10:13:11,339 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:13:11,480 INFO L129 PetriNetUnfolder]: 28/733 cut-off events. [2022-07-12 10:13:11,480 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-07-12 10:13:11,488 INFO L84 FinitePrefix]: Finished finitePrefix Result has 742 conditions, 733 events. 28/733 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2574 event pairs, 0 based on Foata normal form. 67/727 useless extension candidates. Maximal degree in co-relation 423. Up to 4 conditions per place. [2022-07-12 10:13:11,493 INFO L132 encePairwiseOnDemand]: 503/547 looper letters, 2 selfloop transitions, 0 changer transitions 0/503 dead transitions. [2022-07-12 10:13:11,493 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 488 places, 503 transitions, 1018 flow [2022-07-12 10:13:11,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 10:13:11,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-07-12 10:13:11,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 1048 transitions. [2022-07-12 10:13:11,509 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9579524680073126 [2022-07-12 10:13:11,509 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 1048 transitions. [2022-07-12 10:13:11,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 1048 transitions. [2022-07-12 10:13:11,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:13:11,516 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 1048 transitions. [2022-07-12 10:13:11,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 524.0) internal successors, (1048), 2 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:13:11,529 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 547.0) internal successors, (1641), 3 states have internal predecessors, (1641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:13:11,531 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 547.0) internal successors, (1641), 3 states have internal predecessors, (1641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:13:11,533 INFO L186 Difference]: Start difference. First operand has 487 places, 547 transitions, 1102 flow. Second operand 2 states and 1048 transitions. [2022-07-12 10:13:11,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 488 places, 503 transitions, 1018 flow [2022-07-12 10:13:11,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 488 places, 503 transitions, 1018 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-12 10:13:11,550 INFO L242 Difference]: Finished difference. Result has 488 places, 503 transitions, 1014 flow [2022-07-12 10:13:11,552 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=547, PETRI_DIFFERENCE_MINUEND_FLOW=1014, PETRI_DIFFERENCE_MINUEND_PLACES=487, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=503, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=1014, PETRI_PLACES=488, PETRI_TRANSITIONS=503} [2022-07-12 10:13:11,556 INFO L279 CegarLoopForPetriNet]: 487 programPoint places, 1 predicate places. [2022-07-12 10:13:11,556 INFO L495 AbstractCegarLoop]: Abstraction has has 488 places, 503 transitions, 1014 flow [2022-07-12 10:13:11,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 501.5) internal successors, (1003), 2 states have internal predecessors, (1003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:13:11,560 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:13:11,561 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:13:11,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 10:13:11,561 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)] === [2022-07-12 10:13:11,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:13:11,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1089941567, now seen corresponding path program 1 times [2022-07-12 10:13:11,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:13:11,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679975092] [2022-07-12 10:13:11,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:13:11,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:13:11,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:13:11,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:13:11,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:13:11,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679975092] [2022-07-12 10:13:11,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679975092] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:13:11,653 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:13:11,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:13:11,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710418596] [2022-07-12 10:13:11,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:13:11,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:13:11,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:13:11,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:13:11,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:13:11,658 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 492 out of 547 [2022-07-12 10:13:11,660 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 488 places, 503 transitions, 1014 flow. Second operand has 3 states, 3 states have (on average 493.0) internal successors, (1479), 3 states have internal predecessors, (1479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:13:11,660 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:13:11,660 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 492 of 547 [2022-07-12 10:13:11,660 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:13:11,792 INFO L129 PetriNetUnfolder]: 28/739 cut-off events. [2022-07-12 10:13:11,792 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-07-12 10:13:11,797 INFO L84 FinitePrefix]: Finished finitePrefix Result has 764 conditions, 739 events. 28/739 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. 0/666 useless extension candidates. Maximal degree in co-relation 760. Up to 12 conditions per place. [2022-07-12 10:13:11,801 INFO L132 encePairwiseOnDemand]: 544/547 looper letters, 15 selfloop transitions, 2 changer transitions 0/509 dead transitions. [2022-07-12 10:13:11,801 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 490 places, 509 transitions, 1060 flow [2022-07-12 10:13:11,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:13:11,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:13:11,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1494 transitions. [2022-07-12 10:13:11,805 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9104204753199269 [2022-07-12 10:13:11,805 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1494 transitions. [2022-07-12 10:13:11,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1494 transitions. [2022-07-12 10:13:11,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:13:11,806 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1494 transitions. [2022-07-12 10:13:11,808 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 498.0) internal successors, (1494), 3 states have internal predecessors, (1494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:13:11,811 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 547.0) internal successors, (2188), 4 states have internal predecessors, (2188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:13:11,812 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 547.0) internal successors, (2188), 4 states have internal predecessors, (2188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:13:11,812 INFO L186 Difference]: Start difference. First operand has 488 places, 503 transitions, 1014 flow. Second operand 3 states and 1494 transitions. [2022-07-12 10:13:11,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 490 places, 509 transitions, 1060 flow [2022-07-12 10:13:11,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 490 places, 509 transitions, 1060 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-12 10:13:11,819 INFO L242 Difference]: Finished difference. Result has 491 places, 504 transitions, 1026 flow [2022-07-12 10:13:11,820 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=547, PETRI_DIFFERENCE_MINUEND_FLOW=1014, PETRI_DIFFERENCE_MINUEND_PLACES=488, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=501, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1026, PETRI_PLACES=491, PETRI_TRANSITIONS=504} [2022-07-12 10:13:11,821 INFO L279 CegarLoopForPetriNet]: 487 programPoint places, 4 predicate places. [2022-07-12 10:13:11,822 INFO L495 AbstractCegarLoop]: Abstraction has has 491 places, 504 transitions, 1026 flow [2022-07-12 10:13:11,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 493.0) internal successors, (1479), 3 states have internal predecessors, (1479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:13:11,823 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:13:11,823 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:13:11,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 10:13:11,823 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)] === [2022-07-12 10:13:11,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:13:11,824 INFO L85 PathProgramCache]: Analyzing trace with hash 12077894, now seen corresponding path program 1 times [2022-07-12 10:13:11,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:13:11,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763288211] [2022-07-12 10:13:11,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:13:11,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:13:11,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:13:11,903 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:13:11,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:13:11,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763288211] [2022-07-12 10:13:11,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763288211] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:13:11,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036231582] [2022-07-12 10:13:11,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:13:11,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:13:11,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:13:11,906 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:13:11,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 10:13:11,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:13:11,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 10:13:11,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:13:12,027 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:13:12,027 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:13:12,046 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:13:12,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2036231582] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 10:13:12,047 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 10:13:12,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2022-07-12 10:13:12,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815856316] [2022-07-12 10:13:12,047 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 10:13:12,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:13:12,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:13:12,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:13:12,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-07-12 10:13:12,051 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 492 out of 547 [2022-07-12 10:13:12,054 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 491 places, 504 transitions, 1026 flow. Second operand has 6 states, 6 states have (on average 496.0) internal successors, (2976), 6 states have internal predecessors, (2976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:13:12,054 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:13:12,054 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 492 of 547 [2022-07-12 10:13:12,054 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:13:12,207 INFO L129 PetriNetUnfolder]: 28/748 cut-off events. [2022-07-12 10:13:12,207 INFO L130 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-07-12 10:13:12,214 INFO L84 FinitePrefix]: Finished finitePrefix Result has 788 conditions, 748 events. 28/748 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2563 event pairs, 0 based on Foata normal form. 2/678 useless extension candidates. Maximal degree in co-relation 782. Up to 7 conditions per place. [2022-07-12 10:13:12,218 INFO L132 encePairwiseOnDemand]: 543/547 looper letters, 19 selfloop transitions, 5 changer transitions 0/516 dead transitions. [2022-07-12 10:13:12,218 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 495 places, 516 transitions, 1100 flow [2022-07-12 10:13:12,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:13:12,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-12 10:13:12,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2486 transitions. [2022-07-12 10:13:12,222 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9089579524680073 [2022-07-12 10:13:12,222 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2486 transitions. [2022-07-12 10:13:12,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2486 transitions. [2022-07-12 10:13:12,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:13:12,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2486 transitions. [2022-07-12 10:13:12,226 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 497.2) internal successors, (2486), 5 states have internal predecessors, (2486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:13:12,230 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 547.0) internal successors, (3282), 6 states have internal predecessors, (3282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:13:12,231 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 547.0) internal successors, (3282), 6 states have internal predecessors, (3282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:13:12,231 INFO L186 Difference]: Start difference. First operand has 491 places, 504 transitions, 1026 flow. Second operand 5 states and 2486 transitions. [2022-07-12 10:13:12,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 495 places, 516 transitions, 1100 flow [2022-07-12 10:13:12,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 494 places, 516 transitions, 1098 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-12 10:13:12,238 INFO L242 Difference]: Finished difference. Result has 497 places, 506 transitions, 1054 flow [2022-07-12 10:13:12,239 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=547, PETRI_DIFFERENCE_MINUEND_FLOW=1024, PETRI_DIFFERENCE_MINUEND_PLACES=490, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=500, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1054, PETRI_PLACES=497, PETRI_TRANSITIONS=506} [2022-07-12 10:13:12,239 INFO L279 CegarLoopForPetriNet]: 487 programPoint places, 10 predicate places. [2022-07-12 10:13:12,239 INFO L495 AbstractCegarLoop]: Abstraction has has 497 places, 506 transitions, 1054 flow [2022-07-12 10:13:12,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 496.0) internal successors, (2976), 6 states have internal predecessors, (2976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:13:12,241 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:13:12,241 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:13:12,259 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 10:13:12,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:13:12,458 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 38 more)] === [2022-07-12 10:13:12,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:13:12,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1288753434, now seen corresponding path program 2 times [2022-07-12 10:13:12,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:13:12,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739417816] [2022-07-12 10:13:12,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:13:12,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:13:12,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:13:12,593 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-12 10:13:12,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:13:12,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739417816] [2022-07-12 10:13:12,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739417816] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:13:12,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:13:12,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 10:13:12,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957433256] [2022-07-12 10:13:12,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:13:12,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 10:13:12,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:13:12,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 10:13:12,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 10:13:12,597 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 489 out of 547 [2022-07-12 10:13:12,599 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 497 places, 506 transitions, 1054 flow. Second operand has 4 states, 4 states have (on average 490.0) internal successors, (1960), 4 states have internal predecessors, (1960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:13:12,599 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:13:12,599 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 489 of 547 [2022-07-12 10:13:12,599 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:13:12,837 INFO L129 PetriNetUnfolder]: 28/744 cut-off events. [2022-07-12 10:13:12,837 INFO L130 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-07-12 10:13:12,844 INFO L84 FinitePrefix]: Finished finitePrefix Result has 787 conditions, 744 events. 28/744 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2556 event pairs, 0 based on Foata normal form. 0/674 useless extension candidates. Maximal degree in co-relation 779. Up to 9 conditions per place. [2022-07-12 10:13:12,848 INFO L132 encePairwiseOnDemand]: 541/547 looper letters, 8 selfloop transitions, 4 changer transitions 0/502 dead transitions. [2022-07-12 10:13:12,848 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 496 places, 502 transitions, 1070 flow [2022-07-12 10:13:12,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 10:13:12,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-12 10:13:12,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1970 transitions. [2022-07-12 10:13:12,866 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9003656307129799 [2022-07-12 10:13:12,866 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1970 transitions. [2022-07-12 10:13:12,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1970 transitions. [2022-07-12 10:13:12,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:13:12,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1970 transitions. [2022-07-12 10:13:12,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 492.5) internal successors, (1970), 4 states have internal predecessors, (1970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:13:12,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 547.0) internal successors, (2735), 5 states have internal predecessors, (2735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:13:12,873 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 547.0) internal successors, (2735), 5 states have internal predecessors, (2735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:13:12,873 INFO L186 Difference]: Start difference. First operand has 497 places, 506 transitions, 1054 flow. Second operand 4 states and 1970 transitions. [2022-07-12 10:13:12,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 496 places, 502 transitions, 1070 flow [2022-07-12 10:13:12,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 495 places, 502 transitions, 1064 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-07-12 10:13:12,899 INFO L242 Difference]: Finished difference. Result has 495 places, 502 transitions, 1048 flow [2022-07-12 10:13:12,900 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=547, PETRI_DIFFERENCE_MINUEND_FLOW=1040, PETRI_DIFFERENCE_MINUEND_PLACES=492, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=498, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1048, PETRI_PLACES=495, PETRI_TRANSITIONS=502} [2022-07-12 10:13:12,901 INFO L279 CegarLoopForPetriNet]: 487 programPoint places, 8 predicate places. [2022-07-12 10:13:12,901 INFO L495 AbstractCegarLoop]: Abstraction has has 495 places, 502 transitions, 1048 flow [2022-07-12 10:13:12,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 490.0) internal successors, (1960), 4 states have internal predecessors, (1960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:13:12,902 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:13:12,903 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:13:12,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 10:13:12,903 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 38 more)] === [2022-07-12 10:13:12,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:13:12,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1126128199, now seen corresponding path program 1 times [2022-07-12 10:13:12,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:13:12,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981607448] [2022-07-12 10:13:12,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:13:12,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:13:13,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 10:13:13,000 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-12 10:13:13,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 10:13:13,137 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-12 10:13:13,138 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-12 10:13:13,138 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (40 of 41 remaining) [2022-07-12 10:13:13,140 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (39 of 41 remaining) [2022-07-12 10:13:13,140 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (38 of 41 remaining) [2022-07-12 10:13:13,140 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (37 of 41 remaining) [2022-07-12 10:13:13,140 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (36 of 41 remaining) [2022-07-12 10:13:13,140 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (35 of 41 remaining) [2022-07-12 10:13:13,140 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION (34 of 41 remaining) [2022-07-12 10:13:13,143 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (33 of 41 remaining) [2022-07-12 10:13:13,143 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION (32 of 41 remaining) [2022-07-12 10:13:13,144 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (31 of 41 remaining) [2022-07-12 10:13:13,145 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION (30 of 41 remaining) [2022-07-12 10:13:13,145 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION (29 of 41 remaining) [2022-07-12 10:13:13,145 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION (28 of 41 remaining) [2022-07-12 10:13:13,145 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION (27 of 41 remaining) [2022-07-12 10:13:13,145 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION (26 of 41 remaining) [2022-07-12 10:13:13,145 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION (25 of 41 remaining) [2022-07-12 10:13:13,146 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION (24 of 41 remaining) [2022-07-12 10:13:13,146 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (23 of 41 remaining) [2022-07-12 10:13:13,146 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr1ASSERT_VIOLATIONERROR_FUNCTION (22 of 41 remaining) [2022-07-12 10:13:13,146 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr2ASSERT_VIOLATIONERROR_FUNCTION (21 of 41 remaining) [2022-07-12 10:13:13,146 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr4ASSERT_VIOLATIONERROR_FUNCTION (20 of 41 remaining) [2022-07-12 10:13:13,146 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr3ASSERT_VIOLATIONERROR_FUNCTION (19 of 41 remaining) [2022-07-12 10:13:13,146 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr5ASSERT_VIOLATIONERROR_FUNCTION (18 of 41 remaining) [2022-07-12 10:13:13,147 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr6ASSERT_VIOLATIONERROR_FUNCTION (17 of 41 remaining) [2022-07-12 10:13:13,147 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr7ASSERT_VIOLATIONERROR_FUNCTION (16 of 41 remaining) [2022-07-12 10:13:13,147 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr10ASSERT_VIOLATIONERROR_FUNCTION (15 of 41 remaining) [2022-07-12 10:13:13,147 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr8ASSERT_VIOLATIONERROR_FUNCTION (14 of 41 remaining) [2022-07-12 10:13:13,147 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr11ASSERT_VIOLATIONERROR_FUNCTION (13 of 41 remaining) [2022-07-12 10:13:13,147 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr9ASSERT_VIOLATIONERROR_FUNCTION (12 of 41 remaining) [2022-07-12 10:13:13,147 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (11 of 41 remaining) [2022-07-12 10:13:13,147 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr1ASSERT_VIOLATIONERROR_FUNCTION (10 of 41 remaining) [2022-07-12 10:13:13,147 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr2ASSERT_VIOLATIONERROR_FUNCTION (9 of 41 remaining) [2022-07-12 10:13:13,148 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr4ASSERT_VIOLATIONERROR_FUNCTION (8 of 41 remaining) [2022-07-12 10:13:13,148 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr3ASSERT_VIOLATIONERROR_FUNCTION (7 of 41 remaining) [2022-07-12 10:13:13,148 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr5ASSERT_VIOLATIONERROR_FUNCTION (6 of 41 remaining) [2022-07-12 10:13:13,148 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr6ASSERT_VIOLATIONERROR_FUNCTION (5 of 41 remaining) [2022-07-12 10:13:13,148 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr7ASSERT_VIOLATIONERROR_FUNCTION (4 of 41 remaining) [2022-07-12 10:13:13,149 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr10ASSERT_VIOLATIONERROR_FUNCTION (3 of 41 remaining) [2022-07-12 10:13:13,149 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr8ASSERT_VIOLATIONERROR_FUNCTION (2 of 41 remaining) [2022-07-12 10:13:13,152 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr11ASSERT_VIOLATIONERROR_FUNCTION (1 of 41 remaining) [2022-07-12 10:13:13,152 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr9ASSERT_VIOLATIONERROR_FUNCTION (0 of 41 remaining) [2022-07-12 10:13:13,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 10:13:13,152 INFO L356 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2022-07-12 10:13:13,154 WARN L231 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-12 10:13:13,154 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-07-12 10:13:13,258 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-07-12 10:13:13,264 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 668 places, 753 transitions, 1524 flow [2022-07-12 10:13:13,691 INFO L129 PetriNetUnfolder]: 160/1310 cut-off events. [2022-07-12 10:13:13,691 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-07-12 10:13:13,723 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1324 conditions, 1310 events. 160/1310 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 5827 event pairs, 0 based on Foata normal form. 0/1076 useless extension candidates. Maximal degree in co-relation 802. Up to 8 conditions per place. [2022-07-12 10:13:13,723 INFO L82 GeneralOperation]: Start removeDead. Operand has 668 places, 753 transitions, 1524 flow [2022-07-12 10:13:13,752 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 668 places, 753 transitions, 1524 flow [2022-07-12 10:13:13,759 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:13:13,760 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@5ab7e12d, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4241d0ea [2022-07-12 10:13:13,760 INFO L358 AbstractCegarLoop]: Starting to check reachability of 53 error locations. [2022-07-12 10:13:13,763 INFO L129 PetriNetUnfolder]: 3/59 cut-off events. [2022-07-12 10:13:13,763 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-12 10:13:13,763 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:13:13,763 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:13:13,763 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2022-07-12 10:13:13,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:13:13,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1462435762, now seen corresponding path program 1 times [2022-07-12 10:13:13,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:13:13,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064248477] [2022-07-12 10:13:13,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:13:13,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:13:13,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:13:13,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:13:13,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:13:13,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064248477] [2022-07-12 10:13:13,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064248477] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:13:13,802 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:13:13,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:13:13,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869655987] [2022-07-12 10:13:13,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:13:13,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:13:13,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:13:13,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:13:13,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:13:13,805 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 678 out of 753 [2022-07-12 10:13:13,807 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 668 places, 753 transitions, 1524 flow. Second operand has 3 states, 3 states have (on average 679.0) internal successors, (2037), 3 states have internal predecessors, (2037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:13:13,807 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:13:13,807 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 678 of 753 [2022-07-12 10:13:13,807 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:13:14,086 INFO L129 PetriNetUnfolder]: 48/1204 cut-off events. [2022-07-12 10:13:14,086 INFO L130 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2022-07-12 10:13:14,114 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1240 conditions, 1204 events. 48/1204 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 5654 event pairs, 0 based on Foata normal form. 148/1230 useless extension candidates. Maximal degree in co-relation 758. Up to 16 conditions per place. [2022-07-12 10:13:14,122 INFO L132 encePairwiseOnDemand]: 688/753 looper letters, 17 selfloop transitions, 2 changer transitions 0/697 dead transitions. [2022-07-12 10:13:14,122 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 670 places, 697 transitions, 1450 flow [2022-07-12 10:13:14,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:13:14,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:13:14,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2117 transitions. [2022-07-12 10:13:14,125 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9371403275785746 [2022-07-12 10:13:14,125 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2117 transitions. [2022-07-12 10:13:14,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2117 transitions. [2022-07-12 10:13:14,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:13:14,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2117 transitions. [2022-07-12 10:13:14,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 705.6666666666666) internal successors, (2117), 3 states have internal predecessors, (2117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:13:14,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 753.0) internal successors, (3012), 4 states have internal predecessors, (3012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:13:14,133 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 753.0) internal successors, (3012), 4 states have internal predecessors, (3012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:13:14,133 INFO L186 Difference]: Start difference. First operand has 668 places, 753 transitions, 1524 flow. Second operand 3 states and 2117 transitions. [2022-07-12 10:13:14,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 670 places, 697 transitions, 1450 flow [2022-07-12 10:13:14,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 670 places, 697 transitions, 1450 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-12 10:13:14,142 INFO L242 Difference]: Finished difference. Result has 671 places, 692 transitions, 1412 flow [2022-07-12 10:13:14,143 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=753, PETRI_DIFFERENCE_MINUEND_FLOW=1400, PETRI_DIFFERENCE_MINUEND_PLACES=668, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=691, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=689, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1412, PETRI_PLACES=671, PETRI_TRANSITIONS=692} [2022-07-12 10:13:14,143 INFO L279 CegarLoopForPetriNet]: 668 programPoint places, 3 predicate places. [2022-07-12 10:13:14,143 INFO L495 AbstractCegarLoop]: Abstraction has has 671 places, 692 transitions, 1412 flow [2022-07-12 10:13:14,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 679.0) internal successors, (2037), 3 states have internal predecessors, (2037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:13:14,145 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:13:14,145 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:13:14,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 10:13:14,145 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2022-07-12 10:13:14,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:13:14,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1233700550, now seen corresponding path program 1 times [2022-07-12 10:13:14,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:13:14,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819163561] [2022-07-12 10:13:14,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:13:14,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:13:14,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:13:14,180 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:13:14,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:13:14,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819163561] [2022-07-12 10:13:14,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819163561] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:13:14,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235703001] [2022-07-12 10:13:14,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:13:14,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:13:14,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:13:14,196 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:13:14,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 10:13:14,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:13:14,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 10:13:14,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:13:14,327 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:13:14,328 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:13:14,346 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:13:14,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [235703001] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 10:13:14,346 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 10:13:14,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2022-07-12 10:13:14,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018440166] [2022-07-12 10:13:14,347 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 10:13:14,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:13:14,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:13:14,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:13:14,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-07-12 10:13:14,351 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 678 out of 753 [2022-07-12 10:13:14,355 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 671 places, 692 transitions, 1412 flow. Second operand has 6 states, 6 states have (on average 682.0) internal successors, (4092), 6 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:13:14,355 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:13:14,355 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 678 of 753 [2022-07-12 10:13:14,355 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:13:14,610 INFO L129 PetriNetUnfolder]: 48/1213 cut-off events. [2022-07-12 10:13:14,610 INFO L130 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2022-07-12 10:13:14,639 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1264 conditions, 1213 events. 48/1213 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 5644 event pairs, 0 based on Foata normal form. 2/1094 useless extension candidates. Maximal degree in co-relation 1200. Up to 10 conditions per place. [2022-07-12 10:13:14,646 INFO L132 encePairwiseOnDemand]: 749/753 looper letters, 21 selfloop transitions, 5 changer transitions 0/704 dead transitions. [2022-07-12 10:13:14,646 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 675 places, 704 transitions, 1490 flow [2022-07-12 10:13:14,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:13:14,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-12 10:13:14,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3418 transitions. [2022-07-12 10:13:14,651 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9078353253652058 [2022-07-12 10:13:14,651 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3418 transitions. [2022-07-12 10:13:14,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3418 transitions. [2022-07-12 10:13:14,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:13:14,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3418 transitions. [2022-07-12 10:13:14,656 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 683.6) internal successors, (3418), 5 states have internal predecessors, (3418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:13:14,661 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 753.0) internal successors, (4518), 6 states have internal predecessors, (4518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:13:14,662 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 753.0) internal successors, (4518), 6 states have internal predecessors, (4518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:13:14,662 INFO L186 Difference]: Start difference. First operand has 671 places, 692 transitions, 1412 flow. Second operand 5 states and 3418 transitions. [2022-07-12 10:13:14,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 675 places, 704 transitions, 1490 flow [2022-07-12 10:13:14,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 674 places, 704 transitions, 1488 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-12 10:13:14,671 INFO L242 Difference]: Finished difference. Result has 677 places, 694 transitions, 1440 flow [2022-07-12 10:13:14,672 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=753, PETRI_DIFFERENCE_MINUEND_FLOW=1410, PETRI_DIFFERENCE_MINUEND_PLACES=670, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=692, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=688, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1440, PETRI_PLACES=677, PETRI_TRANSITIONS=694} [2022-07-12 10:13:14,673 INFO L279 CegarLoopForPetriNet]: 668 programPoint places, 9 predicate places. [2022-07-12 10:13:14,673 INFO L495 AbstractCegarLoop]: Abstraction has has 677 places, 694 transitions, 1440 flow [2022-07-12 10:13:14,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 682.0) internal successors, (4092), 6 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:13:14,675 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:13:14,675 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:13:14,692 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-12 10:13:14,892 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,SelfDestructingSolverStorable6 [2022-07-12 10:13:14,892 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2022-07-12 10:13:14,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:13:14,892 INFO L85 PathProgramCache]: Analyzing trace with hash 744387910, now seen corresponding path program 2 times [2022-07-12 10:13:14,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:13:14,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562323021] [2022-07-12 10:13:14,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:13:14,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:13:14,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:13:14,927 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-12 10:13:14,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:13:14,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562323021] [2022-07-12 10:13:14,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562323021] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:13:14,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:13:14,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 10:13:14,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688945476] [2022-07-12 10:13:14,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:13:14,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 10:13:14,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:13:14,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 10:13:14,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 10:13:14,932 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 675 out of 753 [2022-07-12 10:13:14,934 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 677 places, 694 transitions, 1440 flow. Second operand has 4 states, 4 states have (on average 676.0) internal successors, (2704), 4 states have internal predecessors, (2704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:13:14,934 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:13:14,934 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 675 of 753 [2022-07-12 10:13:14,934 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:13:15,142 INFO L129 PetriNetUnfolder]: 48/1209 cut-off events. [2022-07-12 10:13:15,142 INFO L130 PetriNetUnfolder]: For 31/31 co-relation queries the response was YES. [2022-07-12 10:13:15,168 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1263 conditions, 1209 events. 48/1209 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 5638 event pairs, 0 based on Foata normal form. 0/1090 useless extension candidates. Maximal degree in co-relation 1177. Up to 13 conditions per place. [2022-07-12 10:13:15,175 INFO L132 encePairwiseOnDemand]: 747/753 looper letters, 10 selfloop transitions, 4 changer transitions 0/690 dead transitions. [2022-07-12 10:13:15,175 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 676 places, 690 transitions, 1460 flow [2022-07-12 10:13:15,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 10:13:15,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-12 10:13:15,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2716 transitions. [2022-07-12 10:13:15,180 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9017264276228419 [2022-07-12 10:13:15,180 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2716 transitions. [2022-07-12 10:13:15,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2716 transitions. [2022-07-12 10:13:15,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:13:15,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2716 transitions. [2022-07-12 10:13:15,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 679.0) internal successors, (2716), 4 states have internal predecessors, (2716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:13:15,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 753.0) internal successors, (3765), 5 states have internal predecessors, (3765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:13:15,187 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 753.0) internal successors, (3765), 5 states have internal predecessors, (3765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:13:15,187 INFO L186 Difference]: Start difference. First operand has 677 places, 694 transitions, 1440 flow. Second operand 4 states and 2716 transitions. [2022-07-12 10:13:15,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 676 places, 690 transitions, 1460 flow [2022-07-12 10:13:15,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 675 places, 690 transitions, 1454 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-07-12 10:13:15,196 INFO L242 Difference]: Finished difference. Result has 675 places, 690 transitions, 1434 flow [2022-07-12 10:13:15,197 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=753, PETRI_DIFFERENCE_MINUEND_FLOW=1426, PETRI_DIFFERENCE_MINUEND_PLACES=672, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=690, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=686, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1434, PETRI_PLACES=675, PETRI_TRANSITIONS=690} [2022-07-12 10:13:15,197 INFO L279 CegarLoopForPetriNet]: 668 programPoint places, 7 predicate places. [2022-07-12 10:13:15,197 INFO L495 AbstractCegarLoop]: Abstraction has has 675 places, 690 transitions, 1434 flow [2022-07-12 10:13:15,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 676.0) internal successors, (2704), 4 states have internal predecessors, (2704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:13:15,198 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:13:15,198 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:13:15,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 10:13:15,199 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting worker_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2022-07-12 10:13:15,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:13:15,199 INFO L85 PathProgramCache]: Analyzing trace with hash 607977753, now seen corresponding path program 1 times [2022-07-12 10:13:15,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:13:15,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936939118] [2022-07-12 10:13:15,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:13:15,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:13:15,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:13:15,976 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-12 10:13:15,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:13:15,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936939118] [2022-07-12 10:13:15,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936939118] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:13:15,977 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:13:15,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-07-12 10:13:15,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192911084] [2022-07-12 10:13:15,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:13:15,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-12 10:13:15,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:13:15,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-12 10:13:15,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=316, Unknown=0, NotChecked=0, Total=420 [2022-07-12 10:13:15,984 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 523 out of 753 [2022-07-12 10:13:15,990 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 675 places, 690 transitions, 1434 flow. Second operand has 21 states, 21 states have (on average 525.6190476190476) internal successors, (11038), 21 states have internal predecessors, (11038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:13:15,991 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:13:15,991 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 523 of 753 [2022-07-12 10:13:15,991 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand