./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-divine/one_time_barrier_3t.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-divine/one_time_barrier_3t.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 658086e6a2b970f68ba6fa20919311f7cc4c75e1705e5ad288c4fd1e6439159f --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 08:47:40,083 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 08:47:40,085 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 08:47:40,117 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 08:47:40,117 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 08:47:40,119 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 08:47:40,122 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 08:47:40,124 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 08:47:40,125 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 08:47:40,128 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 08:47:40,129 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 08:47:40,133 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 08:47:40,133 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 08:47:40,134 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 08:47:40,135 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 08:47:40,137 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 08:47:40,138 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 08:47:40,139 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 08:47:40,140 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 08:47:40,144 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 08:47:40,145 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 08:47:40,146 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 08:47:40,147 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 08:47:40,148 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 08:47:40,149 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 08:47:40,161 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 08:47:40,161 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 08:47:40,162 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 08:47:40,162 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 08:47:40,163 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 08:47:40,163 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 08:47:40,163 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 08:47:40,165 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 08:47:40,165 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 08:47:40,166 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 08:47:40,167 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 08:47:40,167 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 08:47:40,167 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 08:47:40,167 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 08:47:40,168 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 08:47:40,168 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 08:47:40,169 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 08:47:40,173 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 08:47:40,197 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 08:47:40,197 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 08:47:40,198 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 08:47:40,198 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 08:47:40,198 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 08:47:40,198 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 08:47:40,199 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 08:47:40,199 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 08:47:40,199 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 08:47:40,200 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 08:47:40,200 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 08:47:40,200 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 08:47:40,200 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 08:47:40,201 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 08:47:40,201 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 08:47:40,201 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 08:47:40,201 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 08:47:40,201 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 08:47:40,201 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 08:47:40,202 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 08:47:40,202 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 08:47:40,202 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 08:47:40,202 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 08:47:40,202 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 08:47:40,202 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:47:40,202 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 08:47:40,203 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 08:47:40,203 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 08:47:40,203 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 08:47:40,203 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 08:47:40,203 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 08:47:40,203 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 08:47:40,203 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 08:47:40,204 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 658086e6a2b970f68ba6fa20919311f7cc4c75e1705e5ad288c4fd1e6439159f [2022-07-21 08:47:40,467 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 08:47:40,485 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 08:47:40,487 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 08:47:40,488 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 08:47:40,489 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 08:47:40,490 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-divine/one_time_barrier_3t.i [2022-07-21 08:47:40,533 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/989b44d0d/0acb45fd73e7442ab29e793d1eb764d0/FLAG543577b3d [2022-07-21 08:47:40,950 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 08:47:40,951 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_3t.i [2022-07-21 08:47:40,964 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/989b44d0d/0acb45fd73e7442ab29e793d1eb764d0/FLAG543577b3d [2022-07-21 08:47:41,275 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/989b44d0d/0acb45fd73e7442ab29e793d1eb764d0 [2022-07-21 08:47:41,277 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 08:47:41,278 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 08:47:41,280 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 08:47:41,280 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 08:47:41,282 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 08:47:41,283 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:47:41" (1/1) ... [2022-07-21 08:47:41,284 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@226817d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:47:41, skipping insertion in model container [2022-07-21 08:47:41,284 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:47:41" (1/1) ... [2022-07-21 08:47:41,289 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 08:47:41,327 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 08:47:41,419 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-07-21 08:47:41,603 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_3t.i[30448,30461] [2022-07-21 08:47:41,622 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_3t.i[30811,30824] [2022-07-21 08:47:41,630 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_3t.i[31483,31496] [2022-07-21 08:47:41,632 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_3t.i[31534,31547] [2022-07-21 08:47:41,651 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_3t.i[31683,31696] [2022-07-21 08:47:41,653 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_3t.i[31760,31773] [2022-07-21 08:47:41,657 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_3t.i[31807,31820] [2022-07-21 08:47:41,658 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_3t.i[31916,31929] [2022-07-21 08:47:41,660 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_3t.i[32035,32048] [2022-07-21 08:47:41,661 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_3t.i[32083,32096] [2022-07-21 08:47:41,663 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_3t.i[32160,32173] [2022-07-21 08:47:41,665 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_3t.i[32286,32299] [2022-07-21 08:47:41,674 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_3t.i[32869,32882] [2022-07-21 08:47:41,678 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_3t.i[32946,32959] [2022-07-21 08:47:41,679 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:47:41,708 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 08:47:41,731 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-07-21 08:47:41,741 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_3t.i[30448,30461] [2022-07-21 08:47:41,761 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_3t.i[30811,30824] [2022-07-21 08:47:41,765 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_3t.i[31483,31496] [2022-07-21 08:47:41,782 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_3t.i[31534,31547] [2022-07-21 08:47:41,784 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_3t.i[31683,31696] [2022-07-21 08:47:41,786 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_3t.i[31760,31773] [2022-07-21 08:47:41,791 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_3t.i[31807,31820] [2022-07-21 08:47:41,794 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_3t.i[31916,31929] [2022-07-21 08:47:41,795 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_3t.i[32035,32048] [2022-07-21 08:47:41,796 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_3t.i[32083,32096] [2022-07-21 08:47:41,798 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_3t.i[32160,32173] [2022-07-21 08:47:41,800 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_3t.i[32286,32299] [2022-07-21 08:47:41,810 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_3t.i[32869,32882] [2022-07-21 08:47:41,822 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_3t.i[32946,32959] [2022-07-21 08:47:41,824 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:47:41,866 INFO L208 MainTranslator]: Completed translation [2022-07-21 08:47:41,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:47:41 WrapperNode [2022-07-21 08:47:41,874 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 08:47:41,875 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 08:47:41,875 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 08:47:41,876 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 08:47:41,880 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:47:41" (1/1) ... [2022-07-21 08:47:41,913 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:47:41" (1/1) ... [2022-07-21 08:47:41,993 INFO L137 Inliner]: procedures = 174, calls = 75, calls flagged for inlining = 6, calls inlined = 8, statements flattened = 464 [2022-07-21 08:47:41,996 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 08:47:41,997 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 08:47:41,997 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 08:47:41,997 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 08:47:42,002 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:47:41" (1/1) ... [2022-07-21 08:47:42,003 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:47:41" (1/1) ... [2022-07-21 08:47:42,019 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:47:41" (1/1) ... [2022-07-21 08:47:42,020 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:47:41" (1/1) ... [2022-07-21 08:47:42,032 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:47:41" (1/1) ... [2022-07-21 08:47:42,073 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:47:41" (1/1) ... [2022-07-21 08:47:42,075 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:47:41" (1/1) ... [2022-07-21 08:47:42,079 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 08:47:42,107 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 08:47:42,108 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 08:47:42,108 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 08:47:42,108 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:47:41" (1/1) ... [2022-07-21 08:47:42,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:47:42,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:47:42,136 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 08:47:42,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 08:47:42,201 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 08:47:42,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 08:47:42,201 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-07-21 08:47:42,201 INFO L130 BoogieDeclarations]: Found specification of procedure worker_fn [2022-07-21 08:47:42,202 INFO L138 BoogieDeclarations]: Found implementation of procedure worker_fn [2022-07-21 08:47:42,202 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 08:47:42,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-21 08:47:42,202 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 08:47:42,202 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-21 08:47:42,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 08:47:42,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 08:47:42,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 08:47:42,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 08:47:42,204 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-21 08:47:42,451 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 08:47:42,453 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 08:47:43,114 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 08:47:43,129 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 08:47:43,129 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2022-07-21 08:47:43,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:47:43 BoogieIcfgContainer [2022-07-21 08:47:43,132 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 08:47:43,133 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 08:47:43,133 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 08:47:43,135 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 08:47:43,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 08:47:41" (1/3) ... [2022-07-21 08:47:43,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50bb0df3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:47:43, skipping insertion in model container [2022-07-21 08:47:43,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:47:41" (2/3) ... [2022-07-21 08:47:43,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50bb0df3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:47:43, skipping insertion in model container [2022-07-21 08:47:43,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:47:43" (3/3) ... [2022-07-21 08:47:43,138 INFO L111 eAbstractionObserver]: Analyzing ICFG one_time_barrier_3t.i [2022-07-21 08:47:43,142 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-21 08:47:43,148 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 08:47:43,149 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 27 error locations. [2022-07-21 08:47:43,149 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-21 08:47:43,246 INFO L135 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-07-21 08:47:43,292 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 473 places, 532 transitions, 1072 flow [2022-07-21 08:47:43,457 INFO L129 PetriNetUnfolder]: 94/783 cut-off events. [2022-07-21 08:47:43,458 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-07-21 08:47:43,469 INFO L84 FinitePrefix]: Finished finitePrefix Result has 789 conditions, 783 events. 94/783 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2629 event pairs, 0 based on Foata normal form. 0/645 useless extension candidates. Maximal degree in co-relation 460. Up to 4 conditions per place. [2022-07-21 08:47:43,469 INFO L82 GeneralOperation]: Start removeDead. Operand has 473 places, 532 transitions, 1072 flow [2022-07-21 08:47:43,479 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 473 places, 532 transitions, 1072 flow [2022-07-21 08:47:43,485 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 08:47:43,489 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@54d3f37, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1afade94 [2022-07-21 08:47:43,489 INFO L358 AbstractCegarLoop]: Starting to check reachability of 40 error locations. [2022-07-21 08:47:43,493 INFO L129 PetriNetUnfolder]: 3/58 cut-off events. [2022-07-21 08:47:43,494 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-21 08:47:43,494 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:47:43,494 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] [2022-07-21 08:47:43,495 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2022-07-21 08:47:43,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:47:43,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1416560676, now seen corresponding path program 1 times [2022-07-21 08:47:43,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:47:43,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205701130] [2022-07-21 08:47:43,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:47:43,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:47:43,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:47:43,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:47:43,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:47:43,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205701130] [2022-07-21 08:47:43,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205701130] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:47:43,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:47:43,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:47:43,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772718296] [2022-07-21 08:47:43,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:47:43,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:47:43,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:47:43,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:47:43,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:47:43,715 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 478 out of 532 [2022-07-21 08:47:43,721 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 473 places, 532 transitions, 1072 flow. Second operand has 3 states, 3 states have (on average 479.0) internal successors, (1437), 3 states have internal predecessors, (1437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:43,721 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:47:43,721 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 478 of 532 [2022-07-21 08:47:43,722 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:47:43,880 INFO L129 PetriNetUnfolder]: 28/723 cut-off events. [2022-07-21 08:47:43,881 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-07-21 08:47:43,887 INFO L84 FinitePrefix]: Finished finitePrefix Result has 747 conditions, 723 events. 28/723 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2555 event pairs, 0 based on Foata normal form. 65/716 useless extension candidates. Maximal degree in co-relation 421. Up to 12 conditions per place. [2022-07-21 08:47:43,891 INFO L132 encePairwiseOnDemand]: 486/532 looper letters, 15 selfloop transitions, 2 changer transitions 0/495 dead transitions. [2022-07-21 08:47:43,891 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 475 places, 495 transitions, 1032 flow [2022-07-21 08:47:43,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:47:43,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:47:43,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1496 transitions. [2022-07-21 08:47:43,906 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9373433583959899 [2022-07-21 08:47:43,906 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1496 transitions. [2022-07-21 08:47:43,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1496 transitions. [2022-07-21 08:47:43,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:47:43,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1496 transitions. [2022-07-21 08:47:43,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 498.6666666666667) internal successors, (1496), 3 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:43,923 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 532.0) internal successors, (2128), 4 states have internal predecessors, (2128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:43,925 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 532.0) internal successors, (2128), 4 states have internal predecessors, (2128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:43,926 INFO L186 Difference]: Start difference. First operand has 473 places, 532 transitions, 1072 flow. Second operand 3 states and 1496 transitions. [2022-07-21 08:47:43,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 475 places, 495 transitions, 1032 flow [2022-07-21 08:47:43,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 475 places, 495 transitions, 1032 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-21 08:47:43,940 INFO L242 Difference]: Finished difference. Result has 476 places, 490 transitions, 998 flow [2022-07-21 08:47:43,942 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=532, PETRI_DIFFERENCE_MINUEND_FLOW=986, PETRI_DIFFERENCE_MINUEND_PLACES=473, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=489, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=487, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=998, PETRI_PLACES=476, PETRI_TRANSITIONS=490} [2022-07-21 08:47:43,945 INFO L279 CegarLoopForPetriNet]: 473 programPoint places, 3 predicate places. [2022-07-21 08:47:43,945 INFO L495 AbstractCegarLoop]: Abstraction has has 476 places, 490 transitions, 998 flow [2022-07-21 08:47:43,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 479.0) internal successors, (1437), 3 states have internal predecessors, (1437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:43,946 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:47:43,946 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] [2022-07-21 08:47:43,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 08:47:43,947 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2022-07-21 08:47:43,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:47:43,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1160245700, now seen corresponding path program 1 times [2022-07-21 08:47:43,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:47:43,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181285700] [2022-07-21 08:47:43,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:47:43,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:47:44,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:47:44,073 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:47:44,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:47:44,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181285700] [2022-07-21 08:47:44,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181285700] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 08:47:44,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215844121] [2022-07-21 08:47:44,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:47:44,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:47:44,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:47:44,076 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 08:47:44,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 08:47:44,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:47:44,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 08:47:44,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 08:47:44,338 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:47:44,338 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 08:47:44,380 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:47:44,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1215844121] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 08:47:44,380 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 08:47:44,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2022-07-21 08:47:44,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120554440] [2022-07-21 08:47:44,381 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 08:47:44,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:47:44,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:47:44,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:47:44,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:47:44,386 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 478 out of 532 [2022-07-21 08:47:44,388 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 476 places, 490 transitions, 998 flow. Second operand has 6 states, 6 states have (on average 482.0) internal successors, (2892), 6 states have internal predecessors, (2892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:44,389 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:47:44,389 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 478 of 532 [2022-07-21 08:47:44,389 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:47:44,603 INFO L129 PetriNetUnfolder]: 28/732 cut-off events. [2022-07-21 08:47:44,604 INFO L130 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-07-21 08:47:44,609 INFO L84 FinitePrefix]: Finished finitePrefix Result has 771 conditions, 732 events. 28/732 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2546 event pairs, 0 based on Foata normal form. 2/663 useless extension candidates. Maximal degree in co-relation 708. Up to 7 conditions per place. [2022-07-21 08:47:44,612 INFO L132 encePairwiseOnDemand]: 528/532 looper letters, 19 selfloop transitions, 5 changer transitions 0/502 dead transitions. [2022-07-21 08:47:44,612 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 480 places, 502 transitions, 1072 flow [2022-07-21 08:47:44,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 08:47:44,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-21 08:47:44,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2416 transitions. [2022-07-21 08:47:44,616 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9082706766917293 [2022-07-21 08:47:44,616 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2416 transitions. [2022-07-21 08:47:44,616 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2416 transitions. [2022-07-21 08:47:44,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:47:44,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2416 transitions. [2022-07-21 08:47:44,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 483.2) internal successors, (2416), 5 states have internal predecessors, (2416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:44,624 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 532.0) internal successors, (3192), 6 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:44,625 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 532.0) internal successors, (3192), 6 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:44,625 INFO L186 Difference]: Start difference. First operand has 476 places, 490 transitions, 998 flow. Second operand 5 states and 2416 transitions. [2022-07-21 08:47:44,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 480 places, 502 transitions, 1072 flow [2022-07-21 08:47:44,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 479 places, 502 transitions, 1070 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-21 08:47:44,632 INFO L242 Difference]: Finished difference. Result has 482 places, 492 transitions, 1026 flow [2022-07-21 08:47:44,633 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=532, PETRI_DIFFERENCE_MINUEND_FLOW=996, PETRI_DIFFERENCE_MINUEND_PLACES=475, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=490, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=486, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1026, PETRI_PLACES=482, PETRI_TRANSITIONS=492} [2022-07-21 08:47:44,633 INFO L279 CegarLoopForPetriNet]: 473 programPoint places, 9 predicate places. [2022-07-21 08:47:44,634 INFO L495 AbstractCegarLoop]: Abstraction has has 482 places, 492 transitions, 1026 flow [2022-07-21 08:47:44,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 482.0) internal successors, (2892), 6 states have internal predecessors, (2892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:44,635 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:47:44,636 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] [2022-07-21 08:47:44,670 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-21 08:47:44,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:47:44,852 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2022-07-21 08:47:44,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:47:44,853 INFO L85 PathProgramCache]: Analyzing trace with hash 2075425340, now seen corresponding path program 2 times [2022-07-21 08:47:44,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:47:44,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061352755] [2022-07-21 08:47:44,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:47:44,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:47:44,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:47:44,915 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-21 08:47:44,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:47:44,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061352755] [2022-07-21 08:47:44,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061352755] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:47:44,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:47:44,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 08:47:44,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102946572] [2022-07-21 08:47:44,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:47:44,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 08:47:44,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:47:44,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 08:47:44,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 08:47:44,920 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 481 out of 532 [2022-07-21 08:47:44,922 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 482 places, 492 transitions, 1026 flow. Second operand has 4 states, 4 states have (on average 482.0) internal successors, (1928), 4 states have internal predecessors, (1928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:44,922 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:47:44,922 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 481 of 532 [2022-07-21 08:47:44,922 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:47:45,019 INFO L129 PetriNetUnfolder]: 28/730 cut-off events. [2022-07-21 08:47:45,020 INFO L130 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-07-21 08:47:45,026 INFO L84 FinitePrefix]: Finished finitePrefix Result has 767 conditions, 730 events. 28/730 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2542 event pairs, 0 based on Foata normal form. 0/660 useless extension candidates. Maximal degree in co-relation 682. Up to 5 conditions per place. [2022-07-21 08:47:45,029 INFO L132 encePairwiseOnDemand]: 529/532 looper letters, 5 selfloop transitions, 2 changer transitions 0/490 dead transitions. [2022-07-21 08:47:45,029 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 483 places, 490 transitions, 1036 flow [2022-07-21 08:47:45,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 08:47:45,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-21 08:47:45,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1932 transitions. [2022-07-21 08:47:45,033 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9078947368421053 [2022-07-21 08:47:45,033 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1932 transitions. [2022-07-21 08:47:45,033 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1932 transitions. [2022-07-21 08:47:45,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:47:45,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1932 transitions. [2022-07-21 08:47:45,037 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 483.0) internal successors, (1932), 4 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:45,040 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 532.0) internal successors, (2660), 5 states have internal predecessors, (2660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:45,041 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 532.0) internal successors, (2660), 5 states have internal predecessors, (2660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:45,041 INFO L186 Difference]: Start difference. First operand has 482 places, 492 transitions, 1026 flow. Second operand 4 states and 1932 transitions. [2022-07-21 08:47:45,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 483 places, 490 transitions, 1036 flow [2022-07-21 08:47:45,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 482 places, 490 transitions, 1030 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-07-21 08:47:45,049 INFO L242 Difference]: Finished difference. Result has 482 places, 490 transitions, 1020 flow [2022-07-21 08:47:45,049 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=532, PETRI_DIFFERENCE_MINUEND_FLOW=1016, PETRI_DIFFERENCE_MINUEND_PLACES=479, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=490, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=488, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1020, PETRI_PLACES=482, PETRI_TRANSITIONS=490} [2022-07-21 08:47:45,050 INFO L279 CegarLoopForPetriNet]: 473 programPoint places, 9 predicate places. [2022-07-21 08:47:45,050 INFO L495 AbstractCegarLoop]: Abstraction has has 482 places, 490 transitions, 1020 flow [2022-07-21 08:47:45,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 482.0) internal successors, (1928), 4 states have internal predecessors, (1928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:45,051 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:47:45,052 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:47:45,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 08:47:45,052 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2022-07-21 08:47:45,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:47:45,052 INFO L85 PathProgramCache]: Analyzing trace with hash 591066944, now seen corresponding path program 1 times [2022-07-21 08:47:45,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:47:45,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415462691] [2022-07-21 08:47:45,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:47:45,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:47:45,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 08:47:45,105 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-21 08:47:45,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 08:47:45,151 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-21 08:47:45,152 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-21 08:47:45,152 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (39 of 40 remaining) [2022-07-21 08:47:45,154 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (38 of 40 remaining) [2022-07-21 08:47:45,154 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (37 of 40 remaining) [2022-07-21 08:47:45,154 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (36 of 40 remaining) [2022-07-21 08:47:45,154 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (35 of 40 remaining) [2022-07-21 08:47:45,154 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (34 of 40 remaining) [2022-07-21 08:47:45,155 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (33 of 40 remaining) [2022-07-21 08:47:45,155 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION (32 of 40 remaining) [2022-07-21 08:47:45,155 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION (31 of 40 remaining) [2022-07-21 08:47:45,155 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (30 of 40 remaining) [2022-07-21 08:47:45,155 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION (29 of 40 remaining) [2022-07-21 08:47:45,156 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION (28 of 40 remaining) [2022-07-21 08:47:45,156 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION (27 of 40 remaining) [2022-07-21 08:47:45,156 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION (26 of 40 remaining) [2022-07-21 08:47:45,156 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION (25 of 40 remaining) [2022-07-21 08:47:45,156 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION (24 of 40 remaining) [2022-07-21 08:47:45,156 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (23 of 40 remaining) [2022-07-21 08:47:45,157 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr1ASSERT_VIOLATIONERROR_FUNCTION (22 of 40 remaining) [2022-07-21 08:47:45,157 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr2ASSERT_VIOLATIONERROR_FUNCTION (21 of 40 remaining) [2022-07-21 08:47:45,157 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr4ASSERT_VIOLATIONERROR_FUNCTION (20 of 40 remaining) [2022-07-21 08:47:45,157 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr3ASSERT_VIOLATIONERROR_FUNCTION (19 of 40 remaining) [2022-07-21 08:47:45,157 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr5ASSERT_VIOLATIONERROR_FUNCTION (18 of 40 remaining) [2022-07-21 08:47:45,158 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr6ASSERT_VIOLATIONERROR_FUNCTION (17 of 40 remaining) [2022-07-21 08:47:45,158 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr7ASSERT_VIOLATIONERROR_FUNCTION (16 of 40 remaining) [2022-07-21 08:47:45,158 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr10ASSERT_VIOLATIONERROR_FUNCTION (15 of 40 remaining) [2022-07-21 08:47:45,158 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr8ASSERT_VIOLATIONERROR_FUNCTION (14 of 40 remaining) [2022-07-21 08:47:45,158 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr11ASSERT_VIOLATIONERROR_FUNCTION (13 of 40 remaining) [2022-07-21 08:47:45,159 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr9ASSERT_VIOLATIONERROR_FUNCTION (12 of 40 remaining) [2022-07-21 08:47:45,159 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (11 of 40 remaining) [2022-07-21 08:47:45,159 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr1ASSERT_VIOLATIONERROR_FUNCTION (10 of 40 remaining) [2022-07-21 08:47:45,159 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr2ASSERT_VIOLATIONERROR_FUNCTION (9 of 40 remaining) [2022-07-21 08:47:45,159 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr4ASSERT_VIOLATIONERROR_FUNCTION (8 of 40 remaining) [2022-07-21 08:47:45,159 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr3ASSERT_VIOLATIONERROR_FUNCTION (7 of 40 remaining) [2022-07-21 08:47:45,160 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr5ASSERT_VIOLATIONERROR_FUNCTION (6 of 40 remaining) [2022-07-21 08:47:45,160 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr6ASSERT_VIOLATIONERROR_FUNCTION (5 of 40 remaining) [2022-07-21 08:47:45,160 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr7ASSERT_VIOLATIONERROR_FUNCTION (4 of 40 remaining) [2022-07-21 08:47:45,160 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr10ASSERT_VIOLATIONERROR_FUNCTION (3 of 40 remaining) [2022-07-21 08:47:45,160 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr8ASSERT_VIOLATIONERROR_FUNCTION (2 of 40 remaining) [2022-07-21 08:47:45,161 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr11ASSERT_VIOLATIONERROR_FUNCTION (1 of 40 remaining) [2022-07-21 08:47:45,161 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr9ASSERT_VIOLATIONERROR_FUNCTION (0 of 40 remaining) [2022-07-21 08:47:45,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 08:47:45,161 INFO L356 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2022-07-21 08:47:45,163 WARN L231 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-21 08:47:45,163 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-07-21 08:47:45,206 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-07-21 08:47:45,210 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 654 places, 738 transitions, 1494 flow [2022-07-21 08:47:45,463 INFO L129 PetriNetUnfolder]: 159/1289 cut-off events. [2022-07-21 08:47:45,463 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-07-21 08:47:45,485 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1303 conditions, 1289 events. 159/1289 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 5757 event pairs, 0 based on Foata normal form. 0/1057 useless extension candidates. Maximal degree in co-relation 785. Up to 8 conditions per place. [2022-07-21 08:47:45,485 INFO L82 GeneralOperation]: Start removeDead. Operand has 654 places, 738 transitions, 1494 flow [2022-07-21 08:47:45,504 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 654 places, 738 transitions, 1494 flow [2022-07-21 08:47:45,508 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 08:47:45,513 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@54d3f37, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1afade94 [2022-07-21 08:47:45,513 INFO L358 AbstractCegarLoop]: Starting to check reachability of 52 error locations. [2022-07-21 08:47:45,519 INFO L129 PetriNetUnfolder]: 3/59 cut-off events. [2022-07-21 08:47:45,519 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-21 08:47:45,519 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:47:45,519 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:47:45,519 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 49 more)] === [2022-07-21 08:47:45,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:47:45,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1256086718, now seen corresponding path program 1 times [2022-07-21 08:47:45,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:47:45,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333671725] [2022-07-21 08:47:45,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:47:45,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:47:45,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:47:45,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:47:45,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:47:45,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333671725] [2022-07-21 08:47:45,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333671725] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:47:45,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:47:45,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:47:45,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470231257] [2022-07-21 08:47:45,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:47:45,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:47:45,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:47:45,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:47:45,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:47:45,578 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 664 out of 738 [2022-07-21 08:47:45,580 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 654 places, 738 transitions, 1494 flow. Second operand has 3 states, 3 states have (on average 665.0) internal successors, (1995), 3 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:45,580 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:47:45,580 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 664 of 738 [2022-07-21 08:47:45,580 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:47:45,839 INFO L129 PetriNetUnfolder]: 48/1184 cut-off events. [2022-07-21 08:47:45,840 INFO L130 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2022-07-21 08:47:45,861 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1220 conditions, 1184 events. 48/1184 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 5625 event pairs, 0 based on Foata normal form. 147/1210 useless extension candidates. Maximal degree in co-relation 742. Up to 16 conditions per place. [2022-07-21 08:47:45,870 INFO L132 encePairwiseOnDemand]: 674/738 looper letters, 17 selfloop transitions, 2 changer transitions 0/683 dead transitions. [2022-07-21 08:47:45,870 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 656 places, 683 transitions, 1422 flow [2022-07-21 08:47:45,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:47:45,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:47:45,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2074 transitions. [2022-07-21 08:47:45,874 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9367660343270099 [2022-07-21 08:47:45,874 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2074 transitions. [2022-07-21 08:47:45,874 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2074 transitions. [2022-07-21 08:47:45,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:47:45,875 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2074 transitions. [2022-07-21 08:47:45,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 691.3333333333334) internal successors, (2074), 3 states have internal predecessors, (2074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:45,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 738.0) internal successors, (2952), 4 states have internal predecessors, (2952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:45,883 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 738.0) internal successors, (2952), 4 states have internal predecessors, (2952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:45,883 INFO L186 Difference]: Start difference. First operand has 654 places, 738 transitions, 1494 flow. Second operand 3 states and 2074 transitions. [2022-07-21 08:47:45,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 656 places, 683 transitions, 1422 flow [2022-07-21 08:47:45,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 656 places, 683 transitions, 1422 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-21 08:47:45,892 INFO L242 Difference]: Finished difference. Result has 657 places, 678 transitions, 1384 flow [2022-07-21 08:47:45,892 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=738, PETRI_DIFFERENCE_MINUEND_FLOW=1372, PETRI_DIFFERENCE_MINUEND_PLACES=654, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=677, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=675, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1384, PETRI_PLACES=657, PETRI_TRANSITIONS=678} [2022-07-21 08:47:45,893 INFO L279 CegarLoopForPetriNet]: 654 programPoint places, 3 predicate places. [2022-07-21 08:47:45,893 INFO L495 AbstractCegarLoop]: Abstraction has has 657 places, 678 transitions, 1384 flow [2022-07-21 08:47:45,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 665.0) internal successors, (1995), 3 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:45,894 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:47:45,894 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] [2022-07-21 08:47:45,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 08:47:45,895 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 49 more)] === [2022-07-21 08:47:45,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:47:45,895 INFO L85 PathProgramCache]: Analyzing trace with hash -253852356, now seen corresponding path program 1 times [2022-07-21 08:47:45,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:47:45,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716030134] [2022-07-21 08:47:45,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:47:45,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:47:45,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:47:45,928 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:47:45,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:47:45,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716030134] [2022-07-21 08:47:45,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716030134] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 08:47:45,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386563938] [2022-07-21 08:47:45,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:47:45,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:47:45,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:47:45,940 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 08:47:45,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 08:47:46,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:47:46,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 08:47:46,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 08:47:46,098 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:47:46,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 08:47:46,117 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:47:46,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1386563938] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 08:47:46,117 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 08:47:46,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2022-07-21 08:47:46,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772808348] [2022-07-21 08:47:46,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 08:47:46,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:47:46,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:47:46,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:47:46,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:47:46,124 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 664 out of 738 [2022-07-21 08:47:46,127 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 657 places, 678 transitions, 1384 flow. Second operand has 6 states, 6 states have (on average 668.0) internal successors, (4008), 6 states have internal predecessors, (4008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:46,127 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:47:46,127 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 664 of 738 [2022-07-21 08:47:46,127 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:47:46,411 INFO L129 PetriNetUnfolder]: 48/1193 cut-off events. [2022-07-21 08:47:46,412 INFO L130 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2022-07-21 08:47:46,510 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1244 conditions, 1193 events. 48/1193 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 5615 event pairs, 0 based on Foata normal form. 2/1075 useless extension candidates. Maximal degree in co-relation 1180. Up to 10 conditions per place. [2022-07-21 08:47:46,516 INFO L132 encePairwiseOnDemand]: 734/738 looper letters, 21 selfloop transitions, 5 changer transitions 0/690 dead transitions. [2022-07-21 08:47:46,516 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 661 places, 690 transitions, 1462 flow [2022-07-21 08:47:46,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 08:47:46,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-21 08:47:46,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3348 transitions. [2022-07-21 08:47:46,521 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9073170731707317 [2022-07-21 08:47:46,521 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3348 transitions. [2022-07-21 08:47:46,521 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3348 transitions. [2022-07-21 08:47:46,522 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:47:46,522 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3348 transitions. [2022-07-21 08:47:46,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 669.6) internal successors, (3348), 5 states have internal predecessors, (3348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:46,532 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 738.0) internal successors, (4428), 6 states have internal predecessors, (4428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:46,533 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 738.0) internal successors, (4428), 6 states have internal predecessors, (4428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:46,533 INFO L186 Difference]: Start difference. First operand has 657 places, 678 transitions, 1384 flow. Second operand 5 states and 3348 transitions. [2022-07-21 08:47:46,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 661 places, 690 transitions, 1462 flow [2022-07-21 08:47:46,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 660 places, 690 transitions, 1460 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-21 08:47:46,542 INFO L242 Difference]: Finished difference. Result has 663 places, 680 transitions, 1412 flow [2022-07-21 08:47:46,543 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=738, PETRI_DIFFERENCE_MINUEND_FLOW=1382, PETRI_DIFFERENCE_MINUEND_PLACES=656, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=678, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=674, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1412, PETRI_PLACES=663, PETRI_TRANSITIONS=680} [2022-07-21 08:47:46,544 INFO L279 CegarLoopForPetriNet]: 654 programPoint places, 9 predicate places. [2022-07-21 08:47:46,544 INFO L495 AbstractCegarLoop]: Abstraction has has 663 places, 680 transitions, 1412 flow [2022-07-21 08:47:46,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 668.0) internal successors, (4008), 6 states have internal predecessors, (4008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:46,545 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:47:46,545 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] [2022-07-21 08:47:46,578 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-21 08:47:46,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-07-21 08:47:46,779 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 49 more)] === [2022-07-21 08:47:46,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:47:46,779 INFO L85 PathProgramCache]: Analyzing trace with hash -2092046596, now seen corresponding path program 2 times [2022-07-21 08:47:46,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:47:46,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323795721] [2022-07-21 08:47:46,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:47:46,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:47:46,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:47:46,817 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-21 08:47:46,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:47:46,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323795721] [2022-07-21 08:47:46,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323795721] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:47:46,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:47:46,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 08:47:46,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965419765] [2022-07-21 08:47:46,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:47:46,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 08:47:46,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:47:46,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 08:47:46,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 08:47:46,821 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 667 out of 738 [2022-07-21 08:47:46,823 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 663 places, 680 transitions, 1412 flow. Second operand has 4 states, 4 states have (on average 668.0) internal successors, (2672), 4 states have internal predecessors, (2672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:46,823 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:47:46,823 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 667 of 738 [2022-07-21 08:47:46,823 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:47:47,036 INFO L129 PetriNetUnfolder]: 48/1191 cut-off events. [2022-07-21 08:47:47,037 INFO L130 PetriNetUnfolder]: For 31/31 co-relation queries the response was YES. [2022-07-21 08:47:47,060 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1240 conditions, 1191 events. 48/1191 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 5612 event pairs, 0 based on Foata normal form. 0/1072 useless extension candidates. Maximal degree in co-relation 1154. Up to 9 conditions per place. [2022-07-21 08:47:47,066 INFO L132 encePairwiseOnDemand]: 735/738 looper letters, 7 selfloop transitions, 2 changer transitions 0/678 dead transitions. [2022-07-21 08:47:47,066 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 664 places, 678 transitions, 1426 flow [2022-07-21 08:47:47,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 08:47:47,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-21 08:47:47,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2678 transitions. [2022-07-21 08:47:47,070 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9071815718157181 [2022-07-21 08:47:47,070 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2678 transitions. [2022-07-21 08:47:47,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2678 transitions. [2022-07-21 08:47:47,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:47:47,071 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2678 transitions. [2022-07-21 08:47:47,074 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 669.5) internal successors, (2678), 4 states have internal predecessors, (2678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:47,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 738.0) internal successors, (3690), 5 states have internal predecessors, (3690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:47,077 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 738.0) internal successors, (3690), 5 states have internal predecessors, (3690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:47,077 INFO L186 Difference]: Start difference. First operand has 663 places, 680 transitions, 1412 flow. Second operand 4 states and 2678 transitions. [2022-07-21 08:47:47,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 664 places, 678 transitions, 1426 flow [2022-07-21 08:47:47,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 663 places, 678 transitions, 1420 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-07-21 08:47:47,086 INFO L242 Difference]: Finished difference. Result has 663 places, 678 transitions, 1406 flow [2022-07-21 08:47:47,087 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=738, PETRI_DIFFERENCE_MINUEND_FLOW=1402, PETRI_DIFFERENCE_MINUEND_PLACES=660, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=678, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=676, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1406, PETRI_PLACES=663, PETRI_TRANSITIONS=678} [2022-07-21 08:47:47,087 INFO L279 CegarLoopForPetriNet]: 654 programPoint places, 9 predicate places. [2022-07-21 08:47:47,088 INFO L495 AbstractCegarLoop]: Abstraction has has 663 places, 678 transitions, 1406 flow [2022-07-21 08:47:47,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 668.0) internal successors, (2672), 4 states have internal predecessors, (2672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:47,088 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:47:47,088 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:47:47,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 08:47:47,089 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 49 more)] === [2022-07-21 08:47:47,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:47:47,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1446004211, now seen corresponding path program 1 times [2022-07-21 08:47:47,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:47:47,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683929811] [2022-07-21 08:47:47,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:47:47,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:47:47,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:47:47,124 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-21 08:47:47,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:47:47,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683929811] [2022-07-21 08:47:47,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683929811] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:47:47,125 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:47:47,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:47:47,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708558778] [2022-07-21 08:47:47,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:47:47,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:47:47,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:47:47,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:47:47,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:47:47,128 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 666 out of 738 [2022-07-21 08:47:47,129 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 663 places, 678 transitions, 1406 flow. Second operand has 3 states, 3 states have (on average 667.0) internal successors, (2001), 3 states have internal predecessors, (2001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:47,130 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:47:47,130 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 666 of 738 [2022-07-21 08:47:47,130 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:47:47,379 INFO L129 PetriNetUnfolder]: 39/997 cut-off events. [2022-07-21 08:47:47,380 INFO L130 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2022-07-21 08:47:47,410 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1055 conditions, 997 events. 39/997 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 4073 event pairs, 0 based on Foata normal form. 0/899 useless extension candidates. Maximal degree in co-relation 970. Up to 16 conditions per place. [2022-07-21 08:47:47,417 INFO L132 encePairwiseOnDemand]: 735/738 looper letters, 13 selfloop transitions, 2 changer transitions 0/682 dead transitions. [2022-07-21 08:47:47,418 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 665 places, 682 transitions, 1444 flow [2022-07-21 08:47:47,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:47:47,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:47:47,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2014 transitions. [2022-07-21 08:47:47,422 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9096657633242999 [2022-07-21 08:47:47,422 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2014 transitions. [2022-07-21 08:47:47,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2014 transitions. [2022-07-21 08:47:47,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:47:47,423 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2014 transitions. [2022-07-21 08:47:47,426 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 671.3333333333334) internal successors, (2014), 3 states have internal predecessors, (2014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:47,428 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 738.0) internal successors, (2952), 4 states have internal predecessors, (2952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:47,429 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 738.0) internal successors, (2952), 4 states have internal predecessors, (2952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:47,429 INFO L186 Difference]: Start difference. First operand has 663 places, 678 transitions, 1406 flow. Second operand 3 states and 2014 transitions. [2022-07-21 08:47:47,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 665 places, 682 transitions, 1444 flow [2022-07-21 08:47:47,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 663 places, 682 transitions, 1441 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-21 08:47:47,438 INFO L242 Difference]: Finished difference. Result has 664 places, 679 transitions, 1415 flow [2022-07-21 08:47:47,438 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=738, PETRI_DIFFERENCE_MINUEND_FLOW=1403, PETRI_DIFFERENCE_MINUEND_PLACES=661, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=678, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=676, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1415, PETRI_PLACES=664, PETRI_TRANSITIONS=679} [2022-07-21 08:47:47,439 INFO L279 CegarLoopForPetriNet]: 654 programPoint places, 10 predicate places. [2022-07-21 08:47:47,439 INFO L495 AbstractCegarLoop]: Abstraction has has 664 places, 679 transitions, 1415 flow [2022-07-21 08:47:47,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 667.0) internal successors, (2001), 3 states have internal predecessors, (2001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:47,440 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:47:47,440 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:47:47,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 08:47:47,440 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting worker_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 49 more)] === [2022-07-21 08:47:47,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:47:47,441 INFO L85 PathProgramCache]: Analyzing trace with hash -649049766, now seen corresponding path program 1 times [2022-07-21 08:47:47,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:47:47,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246788691] [2022-07-21 08:47:47,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:47:47,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:47:47,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:47:48,118 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-21 08:47:48,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:47:48,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246788691] [2022-07-21 08:47:48,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246788691] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:47:48,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:47:48,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-07-21 08:47:48,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023888322] [2022-07-21 08:47:48,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:47:48,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-21 08:47:48,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:47:48,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-21 08:47:48,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2022-07-21 08:47:48,124 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 518 out of 738 [2022-07-21 08:47:48,130 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 664 places, 679 transitions, 1415 flow. Second operand has 17 states, 17 states have (on average 520.8235294117648) internal successors, (8854), 17 states have internal predecessors, (8854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:48,130 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:47:48,130 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 518 of 738 [2022-07-21 08:47:48,130 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand