./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-divine/one_time_barrier_twice_3t.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-divine/one_time_barrier_twice_3t.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f7efed4227021db06f22a3abd4d1096de1449b086dcfb78e041156858b4360a4 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 21:29:59,505 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 21:29:59,507 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 21:29:59,539 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 21:29:59,539 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 21:29:59,540 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 21:29:59,545 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 21:29:59,551 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 21:29:59,553 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 21:29:59,558 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 21:29:59,559 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 21:29:59,561 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 21:29:59,562 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 21:29:59,563 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 21:29:59,566 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 21:29:59,567 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 21:29:59,568 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 21:29:59,570 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 21:29:59,573 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 21:29:59,575 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 21:29:59,579 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 21:29:59,580 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 21:29:59,581 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 21:29:59,582 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 21:29:59,582 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 21:29:59,585 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 21:29:59,587 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 21:29:59,587 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 21:29:59,589 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 21:29:59,589 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 21:29:59,590 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 21:29:59,590 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 21:29:59,592 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 21:29:59,592 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 21:29:59,593 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 21:29:59,593 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 21:29:59,594 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 21:29:59,594 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 21:29:59,594 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 21:29:59,595 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 21:29:59,595 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 21:29:59,597 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 21:29:59,598 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 21:29:59,634 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 21:29:59,635 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 21:29:59,635 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 21:29:59,635 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 21:29:59,636 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 21:29:59,636 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 21:29:59,637 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 21:29:59,637 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 21:29:59,637 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 21:29:59,638 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 21:29:59,638 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 21:29:59,638 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 21:29:59,639 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 21:29:59,639 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 21:29:59,639 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 21:29:59,639 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 21:29:59,639 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 21:29:59,640 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 21:29:59,640 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 21:29:59,640 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 21:29:59,640 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 21:29:59,640 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 21:29:59,640 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 21:29:59,641 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 21:29:59,641 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:29:59,641 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 21:29:59,641 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 21:29:59,641 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 21:29:59,642 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 21:29:59,642 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 21:29:59,642 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 21:29:59,642 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 21:29:59,643 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 21:29:59,643 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f7efed4227021db06f22a3abd4d1096de1449b086dcfb78e041156858b4360a4 [2022-07-22 21:29:59,849 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 21:29:59,877 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 21:29:59,880 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 21:29:59,881 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 21:29:59,882 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 21:29:59,884 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-divine/one_time_barrier_twice_3t.i [2022-07-22 21:29:59,938 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12b563f64/f3b27807663c4530b76a4c2fdde49b71/FLAGf2d34c157 [2022-07-22 21:30:00,425 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 21:30:00,425 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_3t.i [2022-07-22 21:30:00,441 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12b563f64/f3b27807663c4530b76a4c2fdde49b71/FLAGf2d34c157 [2022-07-22 21:30:00,732 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12b563f64/f3b27807663c4530b76a4c2fdde49b71 [2022-07-22 21:30:00,734 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 21:30:00,735 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 21:30:00,737 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 21:30:00,737 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 21:30:00,740 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 21:30:00,740 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:30:00" (1/1) ... [2022-07-22 21:30:00,741 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bd94fd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:30:00, skipping insertion in model container [2022-07-22 21:30:00,741 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:30:00" (1/1) ... [2022-07-22 21:30:00,748 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 21:30:00,799 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 21:30:00,966 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-07-22 21:30:01,145 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_3t.i[30448,30461] [2022-07-22 21:30:01,156 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_3t.i[30811,30824] [2022-07-22 21:30:01,169 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_3t.i[31483,31496] [2022-07-22 21:30:01,170 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_3t.i[31534,31547] [2022-07-22 21:30:01,173 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_3t.i[31683,31696] [2022-07-22 21:30:01,175 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_3t.i[31760,31773] [2022-07-22 21:30:01,179 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_3t.i[31807,31820] [2022-07-22 21:30:01,182 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_3t.i[31916,31929] [2022-07-22 21:30:01,184 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_3t.i[32035,32048] [2022-07-22 21:30:01,186 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_3t.i[32083,32096] [2022-07-22 21:30:01,187 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_3t.i[32160,32173] [2022-07-22 21:30:01,189 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_3t.i[32286,32299] [2022-07-22 21:30:01,203 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_3t.i[32897,32910] [2022-07-22 21:30:01,204 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_3t.i[32974,32987] [2022-07-22 21:30:01,207 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:30:01,217 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 21:30:01,232 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-07-22 21:30:01,252 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_3t.i[30448,30461] [2022-07-22 21:30:01,254 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_3t.i[30811,30824] [2022-07-22 21:30:01,257 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_3t.i[31483,31496] [2022-07-22 21:30:01,258 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_3t.i[31534,31547] [2022-07-22 21:30:01,259 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_3t.i[31683,31696] [2022-07-22 21:30:01,260 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_3t.i[31760,31773] [2022-07-22 21:30:01,260 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_3t.i[31807,31820] [2022-07-22 21:30:01,261 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_3t.i[31916,31929] [2022-07-22 21:30:01,262 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_3t.i[32035,32048] [2022-07-22 21:30:01,263 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_3t.i[32083,32096] [2022-07-22 21:30:01,263 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_3t.i[32160,32173] [2022-07-22 21:30:01,264 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_3t.i[32286,32299] [2022-07-22 21:30:01,269 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_3t.i[32897,32910] [2022-07-22 21:30:01,272 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_3t.i[32974,32987] [2022-07-22 21:30:01,273 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:30:01,299 INFO L208 MainTranslator]: Completed translation [2022-07-22 21:30:01,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:30:01 WrapperNode [2022-07-22 21:30:01,300 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 21:30:01,301 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 21:30:01,301 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 21:30:01,301 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 21:30:01,307 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:30:01" (1/1) ... [2022-07-22 21:30:01,337 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:30:01" (1/1) ... [2022-07-22 21:30:01,383 INFO L137 Inliner]: procedures = 174, calls = 78, calls flagged for inlining = 7, calls inlined = 9, statements flattened = 474 [2022-07-22 21:30:01,388 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 21:30:01,389 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 21:30:01,389 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 21:30:01,389 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 21:30:01,401 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:30:01" (1/1) ... [2022-07-22 21:30:01,402 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:30:01" (1/1) ... [2022-07-22 21:30:01,413 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:30:01" (1/1) ... [2022-07-22 21:30:01,413 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:30:01" (1/1) ... [2022-07-22 21:30:01,435 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:30:01" (1/1) ... [2022-07-22 21:30:01,442 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:30:01" (1/1) ... [2022-07-22 21:30:01,445 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:30:01" (1/1) ... [2022-07-22 21:30:01,449 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 21:30:01,450 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 21:30:01,450 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 21:30:01,450 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 21:30:01,451 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:30:01" (1/1) ... [2022-07-22 21:30:01,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:30:01,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:30:01,496 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) [2022-07-22 21:30:01,510 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 [2022-07-22 21:30:01,542 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 21:30:01,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 21:30:01,543 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-07-22 21:30:01,543 INFO L130 BoogieDeclarations]: Found specification of procedure worker_fn [2022-07-22 21:30:01,543 INFO L138 BoogieDeclarations]: Found implementation of procedure worker_fn [2022-07-22 21:30:01,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 21:30:01,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-22 21:30:01,544 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 21:30:01,544 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-22 21:30:01,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 21:30:01,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 21:30:01,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 21:30:01,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 21:30:01,546 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-22 21:30:01,722 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 21:30:01,723 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 21:30:02,331 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 21:30:02,340 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 21:30:02,340 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2022-07-22 21:30:02,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:30:02 BoogieIcfgContainer [2022-07-22 21:30:02,343 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 21:30:02,344 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 21:30:02,344 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 21:30:02,348 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 21:30:02,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 09:30:00" (1/3) ... [2022-07-22 21:30:02,350 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b17156 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:30:02, skipping insertion in model container [2022-07-22 21:30:02,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:30:01" (2/3) ... [2022-07-22 21:30:02,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b17156 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:30:02, skipping insertion in model container [2022-07-22 21:30:02,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:30:02" (3/3) ... [2022-07-22 21:30:02,354 INFO L111 eAbstractionObserver]: Analyzing ICFG one_time_barrier_twice_3t.i [2022-07-22 21:30:02,359 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-22 21:30:02,367 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 21:30:02,369 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2022-07-22 21:30:02,369 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-22 21:30:02,463 INFO L135 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-07-22 21:30:02,521 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 487 places, 547 transitions, 1102 flow [2022-07-22 21:30:02,748 INFO L129 PetriNetUnfolder]: 95/800 cut-off events. [2022-07-22 21:30:02,748 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-07-22 21:30:02,762 INFO L84 FinitePrefix]: Finished finitePrefix Result has 806 conditions, 800 events. 95/800 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2667 event pairs, 0 based on Foata normal form. 0/660 useless extension candidates. Maximal degree in co-relation 462. Up to 4 conditions per place. [2022-07-22 21:30:02,762 INFO L82 GeneralOperation]: Start removeDead. Operand has 487 places, 547 transitions, 1102 flow [2022-07-22 21:30:02,776 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 487 places, 547 transitions, 1102 flow [2022-07-22 21:30:02,784 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 21:30:02,789 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@6c3eb69d, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@b696f37 [2022-07-22 21:30:02,789 INFO L358 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2022-07-22 21:30:02,795 INFO L129 PetriNetUnfolder]: 3/59 cut-off events. [2022-07-22 21:30:02,796 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-22 21:30:02,796 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:30:02,796 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] [2022-07-22 21:30:02,797 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 38 more)] === [2022-07-22 21:30:02,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:30:02,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1462215394, now seen corresponding path program 1 times [2022-07-22 21:30:02,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:30:02,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200780540] [2022-07-22 21:30:02,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:30:02,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:30:02,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:30:02,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:30:02,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:30:02,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200780540] [2022-07-22 21:30:02,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200780540] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:30:02,969 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:30:02,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 21:30:02,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662578812] [2022-07-22 21:30:02,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:30:02,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 21:30:02,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:30:02,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 21:30:02,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 21:30:03,001 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 501 out of 547 [2022-07-22 21:30:03,005 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 487 places, 547 transitions, 1102 flow. Second operand has 2 states, 2 states have (on average 501.5) internal successors, (1003), 2 states have internal predecessors, (1003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:03,006 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:30:03,006 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 501 of 547 [2022-07-22 21:30:03,007 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:30:03,174 INFO L129 PetriNetUnfolder]: 28/733 cut-off events. [2022-07-22 21:30:03,175 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-07-22 21:30:03,186 INFO L84 FinitePrefix]: Finished finitePrefix Result has 742 conditions, 733 events. 28/733 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2574 event pairs, 0 based on Foata normal form. 67/727 useless extension candidates. Maximal degree in co-relation 423. Up to 4 conditions per place. [2022-07-22 21:30:03,192 INFO L132 encePairwiseOnDemand]: 503/547 looper letters, 2 selfloop transitions, 0 changer transitions 0/503 dead transitions. [2022-07-22 21:30:03,192 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 488 places, 503 transitions, 1018 flow [2022-07-22 21:30:03,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 21:30:03,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-07-22 21:30:03,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 1048 transitions. [2022-07-22 21:30:03,213 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9579524680073126 [2022-07-22 21:30:03,214 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 1048 transitions. [2022-07-22 21:30:03,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 1048 transitions. [2022-07-22 21:30:03,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:30:03,228 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 1048 transitions. [2022-07-22 21:30:03,234 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 524.0) internal successors, (1048), 2 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:03,243 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 547.0) internal successors, (1641), 3 states have internal predecessors, (1641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:03,244 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 547.0) internal successors, (1641), 3 states have internal predecessors, (1641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:03,246 INFO L186 Difference]: Start difference. First operand has 487 places, 547 transitions, 1102 flow. Second operand 2 states and 1048 transitions. [2022-07-22 21:30:03,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 488 places, 503 transitions, 1018 flow [2022-07-22 21:30:03,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 488 places, 503 transitions, 1018 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-22 21:30:03,265 INFO L242 Difference]: Finished difference. Result has 488 places, 503 transitions, 1014 flow [2022-07-22 21:30:03,268 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=547, PETRI_DIFFERENCE_MINUEND_FLOW=1014, PETRI_DIFFERENCE_MINUEND_PLACES=487, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=503, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=1014, PETRI_PLACES=488, PETRI_TRANSITIONS=503} [2022-07-22 21:30:03,273 INFO L279 CegarLoopForPetriNet]: 487 programPoint places, 1 predicate places. [2022-07-22 21:30:03,274 INFO L495 AbstractCegarLoop]: Abstraction has has 488 places, 503 transitions, 1014 flow [2022-07-22 21:30:03,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 501.5) internal successors, (1003), 2 states have internal predecessors, (1003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:03,280 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:30:03,280 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] [2022-07-22 21:30:03,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 21:30:03,281 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 38 more)] === [2022-07-22 21:30:03,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:30:03,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1089941567, now seen corresponding path program 1 times [2022-07-22 21:30:03,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:30:03,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529398665] [2022-07-22 21:30:03,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:30:03,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:30:03,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:30:03,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:30:03,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:30:03,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529398665] [2022-07-22 21:30:03,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529398665] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:30:03,395 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:30:03,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 21:30:03,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714751031] [2022-07-22 21:30:03,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:30:03,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 21:30:03,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:30:03,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 21:30:03,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 21:30:03,406 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 492 out of 547 [2022-07-22 21:30:03,408 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 488 places, 503 transitions, 1014 flow. Second operand has 3 states, 3 states have (on average 493.0) internal successors, (1479), 3 states have internal predecessors, (1479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:03,408 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:30:03,408 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 492 of 547 [2022-07-22 21:30:03,408 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:30:03,567 INFO L129 PetriNetUnfolder]: 28/739 cut-off events. [2022-07-22 21:30:03,567 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-07-22 21:30:03,577 INFO L84 FinitePrefix]: Finished finitePrefix Result has 764 conditions, 739 events. 28/739 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2572 event pairs, 0 based on Foata normal form. 0/666 useless extension candidates. Maximal degree in co-relation 760. Up to 12 conditions per place. [2022-07-22 21:30:03,582 INFO L132 encePairwiseOnDemand]: 544/547 looper letters, 15 selfloop transitions, 2 changer transitions 0/509 dead transitions. [2022-07-22 21:30:03,582 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 490 places, 509 transitions, 1060 flow [2022-07-22 21:30:03,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 21:30:03,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-22 21:30:03,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1494 transitions. [2022-07-22 21:30:03,586 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9104204753199269 [2022-07-22 21:30:03,586 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1494 transitions. [2022-07-22 21:30:03,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1494 transitions. [2022-07-22 21:30:03,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:30:03,587 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1494 transitions. [2022-07-22 21:30:03,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 498.0) internal successors, (1494), 3 states have internal predecessors, (1494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:03,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 547.0) internal successors, (2188), 4 states have internal predecessors, (2188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:03,595 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 547.0) internal successors, (2188), 4 states have internal predecessors, (2188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:03,595 INFO L186 Difference]: Start difference. First operand has 488 places, 503 transitions, 1014 flow. Second operand 3 states and 1494 transitions. [2022-07-22 21:30:03,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 490 places, 509 transitions, 1060 flow [2022-07-22 21:30:03,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 490 places, 509 transitions, 1060 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-22 21:30:03,604 INFO L242 Difference]: Finished difference. Result has 491 places, 504 transitions, 1026 flow [2022-07-22 21:30:03,605 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=547, PETRI_DIFFERENCE_MINUEND_FLOW=1014, PETRI_DIFFERENCE_MINUEND_PLACES=488, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=501, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1026, PETRI_PLACES=491, PETRI_TRANSITIONS=504} [2022-07-22 21:30:03,606 INFO L279 CegarLoopForPetriNet]: 487 programPoint places, 4 predicate places. [2022-07-22 21:30:03,606 INFO L495 AbstractCegarLoop]: Abstraction has has 491 places, 504 transitions, 1026 flow [2022-07-22 21:30:03,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 493.0) internal successors, (1479), 3 states have internal predecessors, (1479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:03,608 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:30:03,608 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] [2022-07-22 21:30:03,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 21:30:03,608 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 38 more)] === [2022-07-22 21:30:03,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:30:03,609 INFO L85 PathProgramCache]: Analyzing trace with hash 12077894, now seen corresponding path program 1 times [2022-07-22 21:30:03,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:30:03,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478368874] [2022-07-22 21:30:03,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:30:03,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:30:03,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:30:03,689 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:30:03,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:30:03,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478368874] [2022-07-22 21:30:03,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478368874] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 21:30:03,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767020035] [2022-07-22 21:30:03,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:30:03,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:30:03,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:30:03,693 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) [2022-07-22 21:30:03,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 21:30:03,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:30:03,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 21:30:03,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 21:30:03,853 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:30:03,853 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 21:30:03,874 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:30:03,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [767020035] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 21:30:03,875 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 21:30:03,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2022-07-22 21:30:03,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758302435] [2022-07-22 21:30:03,875 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 21:30:03,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 21:30:03,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:30:03,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 21:30:03,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-07-22 21:30:03,881 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 492 out of 547 [2022-07-22 21:30:03,884 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 491 places, 504 transitions, 1026 flow. Second operand has 6 states, 6 states have (on average 496.0) internal successors, (2976), 6 states have internal predecessors, (2976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:03,884 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:30:03,884 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 492 of 547 [2022-07-22 21:30:03,884 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:30:04,084 INFO L129 PetriNetUnfolder]: 28/748 cut-off events. [2022-07-22 21:30:04,085 INFO L130 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-07-22 21:30:04,094 INFO L84 FinitePrefix]: Finished finitePrefix Result has 788 conditions, 748 events. 28/748 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2563 event pairs, 0 based on Foata normal form. 2/678 useless extension candidates. Maximal degree in co-relation 782. Up to 7 conditions per place. [2022-07-22 21:30:04,099 INFO L132 encePairwiseOnDemand]: 543/547 looper letters, 19 selfloop transitions, 5 changer transitions 0/516 dead transitions. [2022-07-22 21:30:04,099 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 495 places, 516 transitions, 1100 flow [2022-07-22 21:30:04,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 21:30:04,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-22 21:30:04,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2486 transitions. [2022-07-22 21:30:04,105 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9089579524680073 [2022-07-22 21:30:04,105 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2486 transitions. [2022-07-22 21:30:04,105 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2486 transitions. [2022-07-22 21:30:04,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:30:04,107 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2486 transitions. [2022-07-22 21:30:04,112 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 497.2) internal successors, (2486), 5 states have internal predecessors, (2486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:04,118 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 547.0) internal successors, (3282), 6 states have internal predecessors, (3282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:04,120 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 547.0) internal successors, (3282), 6 states have internal predecessors, (3282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:04,120 INFO L186 Difference]: Start difference. First operand has 491 places, 504 transitions, 1026 flow. Second operand 5 states and 2486 transitions. [2022-07-22 21:30:04,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 495 places, 516 transitions, 1100 flow [2022-07-22 21:30:04,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 494 places, 516 transitions, 1098 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-22 21:30:04,130 INFO L242 Difference]: Finished difference. Result has 497 places, 506 transitions, 1054 flow [2022-07-22 21:30:04,131 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=547, PETRI_DIFFERENCE_MINUEND_FLOW=1024, PETRI_DIFFERENCE_MINUEND_PLACES=490, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=500, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1054, PETRI_PLACES=497, PETRI_TRANSITIONS=506} [2022-07-22 21:30:04,133 INFO L279 CegarLoopForPetriNet]: 487 programPoint places, 10 predicate places. [2022-07-22 21:30:04,133 INFO L495 AbstractCegarLoop]: Abstraction has has 497 places, 506 transitions, 1054 flow [2022-07-22 21:30:04,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 496.0) internal successors, (2976), 6 states have internal predecessors, (2976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:04,136 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:30:04,136 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] [2022-07-22 21:30:04,168 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 21:30:04,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:30:04,360 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 38 more)] === [2022-07-22 21:30:04,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:30:04,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1288753434, now seen corresponding path program 2 times [2022-07-22 21:30:04,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:30:04,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601120208] [2022-07-22 21:30:04,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:30:04,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:30:04,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:30:04,488 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-22 21:30:04,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:30:04,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601120208] [2022-07-22 21:30:04,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601120208] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:30:04,489 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:30:04,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 21:30:04,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906513976] [2022-07-22 21:30:04,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:30:04,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 21:30:04,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:30:04,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 21:30:04,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 21:30:04,495 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 489 out of 547 [2022-07-22 21:30:04,498 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 497 places, 506 transitions, 1054 flow. Second operand has 4 states, 4 states have (on average 490.0) internal successors, (1960), 4 states have internal predecessors, (1960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:04,498 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:30:04,498 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 489 of 547 [2022-07-22 21:30:04,498 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:30:04,676 INFO L129 PetriNetUnfolder]: 28/744 cut-off events. [2022-07-22 21:30:04,676 INFO L130 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-07-22 21:30:04,685 INFO L84 FinitePrefix]: Finished finitePrefix Result has 787 conditions, 744 events. 28/744 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2556 event pairs, 0 based on Foata normal form. 0/674 useless extension candidates. Maximal degree in co-relation 779. Up to 9 conditions per place. [2022-07-22 21:30:04,690 INFO L132 encePairwiseOnDemand]: 541/547 looper letters, 8 selfloop transitions, 4 changer transitions 0/502 dead transitions. [2022-07-22 21:30:04,690 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 496 places, 502 transitions, 1070 flow [2022-07-22 21:30:04,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 21:30:04,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-22 21:30:04,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1970 transitions. [2022-07-22 21:30:04,694 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9003656307129799 [2022-07-22 21:30:04,694 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1970 transitions. [2022-07-22 21:30:04,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1970 transitions. [2022-07-22 21:30:04,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:30:04,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1970 transitions. [2022-07-22 21:30:04,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 492.5) internal successors, (1970), 4 states have internal predecessors, (1970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:04,704 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 547.0) internal successors, (2735), 5 states have internal predecessors, (2735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:04,706 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 547.0) internal successors, (2735), 5 states have internal predecessors, (2735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:04,706 INFO L186 Difference]: Start difference. First operand has 497 places, 506 transitions, 1054 flow. Second operand 4 states and 1970 transitions. [2022-07-22 21:30:04,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 496 places, 502 transitions, 1070 flow [2022-07-22 21:30:04,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 495 places, 502 transitions, 1064 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-07-22 21:30:04,722 INFO L242 Difference]: Finished difference. Result has 495 places, 502 transitions, 1048 flow [2022-07-22 21:30:04,722 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=547, PETRI_DIFFERENCE_MINUEND_FLOW=1040, PETRI_DIFFERENCE_MINUEND_PLACES=492, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=498, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1048, PETRI_PLACES=495, PETRI_TRANSITIONS=502} [2022-07-22 21:30:04,724 INFO L279 CegarLoopForPetriNet]: 487 programPoint places, 8 predicate places. [2022-07-22 21:30:04,724 INFO L495 AbstractCegarLoop]: Abstraction has has 495 places, 502 transitions, 1048 flow [2022-07-22 21:30:04,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 490.0) internal successors, (1960), 4 states have internal predecessors, (1960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:04,726 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:30:04,726 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:30:04,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 21:30:04,727 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 38 more)] === [2022-07-22 21:30:04,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:30:04,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1126128199, now seen corresponding path program 1 times [2022-07-22 21:30:04,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:30:04,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778331875] [2022-07-22 21:30:04,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:30:04,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:30:04,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 21:30:04,817 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 21:30:04,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 21:30:04,907 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 21:30:04,908 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-22 21:30:04,908 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (40 of 41 remaining) [2022-07-22 21:30:04,910 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (39 of 41 remaining) [2022-07-22 21:30:04,910 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (38 of 41 remaining) [2022-07-22 21:30:04,911 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (37 of 41 remaining) [2022-07-22 21:30:04,911 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (36 of 41 remaining) [2022-07-22 21:30:04,911 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (35 of 41 remaining) [2022-07-22 21:30:04,912 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION (34 of 41 remaining) [2022-07-22 21:30:04,915 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (33 of 41 remaining) [2022-07-22 21:30:04,915 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION (32 of 41 remaining) [2022-07-22 21:30:04,916 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (31 of 41 remaining) [2022-07-22 21:30:04,917 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION (30 of 41 remaining) [2022-07-22 21:30:04,917 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION (29 of 41 remaining) [2022-07-22 21:30:04,917 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION (28 of 41 remaining) [2022-07-22 21:30:04,917 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION (27 of 41 remaining) [2022-07-22 21:30:04,918 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION (26 of 41 remaining) [2022-07-22 21:30:04,918 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION (25 of 41 remaining) [2022-07-22 21:30:04,918 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION (24 of 41 remaining) [2022-07-22 21:30:04,918 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (23 of 41 remaining) [2022-07-22 21:30:04,918 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr1ASSERT_VIOLATIONERROR_FUNCTION (22 of 41 remaining) [2022-07-22 21:30:04,919 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr2ASSERT_VIOLATIONERROR_FUNCTION (21 of 41 remaining) [2022-07-22 21:30:04,919 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr4ASSERT_VIOLATIONERROR_FUNCTION (20 of 41 remaining) [2022-07-22 21:30:04,919 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr3ASSERT_VIOLATIONERROR_FUNCTION (19 of 41 remaining) [2022-07-22 21:30:04,919 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr5ASSERT_VIOLATIONERROR_FUNCTION (18 of 41 remaining) [2022-07-22 21:30:04,920 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr6ASSERT_VIOLATIONERROR_FUNCTION (17 of 41 remaining) [2022-07-22 21:30:04,920 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr7ASSERT_VIOLATIONERROR_FUNCTION (16 of 41 remaining) [2022-07-22 21:30:04,920 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr10ASSERT_VIOLATIONERROR_FUNCTION (15 of 41 remaining) [2022-07-22 21:30:04,920 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr8ASSERT_VIOLATIONERROR_FUNCTION (14 of 41 remaining) [2022-07-22 21:30:04,920 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr11ASSERT_VIOLATIONERROR_FUNCTION (13 of 41 remaining) [2022-07-22 21:30:04,921 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr9ASSERT_VIOLATIONERROR_FUNCTION (12 of 41 remaining) [2022-07-22 21:30:04,921 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (11 of 41 remaining) [2022-07-22 21:30:04,921 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr1ASSERT_VIOLATIONERROR_FUNCTION (10 of 41 remaining) [2022-07-22 21:30:04,921 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr2ASSERT_VIOLATIONERROR_FUNCTION (9 of 41 remaining) [2022-07-22 21:30:04,921 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr4ASSERT_VIOLATIONERROR_FUNCTION (8 of 41 remaining) [2022-07-22 21:30:04,922 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr3ASSERT_VIOLATIONERROR_FUNCTION (7 of 41 remaining) [2022-07-22 21:30:04,922 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr5ASSERT_VIOLATIONERROR_FUNCTION (6 of 41 remaining) [2022-07-22 21:30:04,922 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr6ASSERT_VIOLATIONERROR_FUNCTION (5 of 41 remaining) [2022-07-22 21:30:04,922 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr7ASSERT_VIOLATIONERROR_FUNCTION (4 of 41 remaining) [2022-07-22 21:30:04,923 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr10ASSERT_VIOLATIONERROR_FUNCTION (3 of 41 remaining) [2022-07-22 21:30:04,924 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr8ASSERT_VIOLATIONERROR_FUNCTION (2 of 41 remaining) [2022-07-22 21:30:04,928 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr11ASSERT_VIOLATIONERROR_FUNCTION (1 of 41 remaining) [2022-07-22 21:30:04,928 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr9ASSERT_VIOLATIONERROR_FUNCTION (0 of 41 remaining) [2022-07-22 21:30:04,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 21:30:04,928 INFO L356 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2022-07-22 21:30:04,931 WARN L231 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-22 21:30:04,931 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-07-22 21:30:04,998 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-07-22 21:30:05,004 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 668 places, 753 transitions, 1524 flow [2022-07-22 21:30:05,394 INFO L129 PetriNetUnfolder]: 160/1310 cut-off events. [2022-07-22 21:30:05,394 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-07-22 21:30:05,427 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1324 conditions, 1310 events. 160/1310 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 5827 event pairs, 0 based on Foata normal form. 0/1076 useless extension candidates. Maximal degree in co-relation 802. Up to 8 conditions per place. [2022-07-22 21:30:05,427 INFO L82 GeneralOperation]: Start removeDead. Operand has 668 places, 753 transitions, 1524 flow [2022-07-22 21:30:05,458 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 668 places, 753 transitions, 1524 flow [2022-07-22 21:30:05,460 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 21:30:05,461 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@6c3eb69d, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@b696f37 [2022-07-22 21:30:05,461 INFO L358 AbstractCegarLoop]: Starting to check reachability of 53 error locations. [2022-07-22 21:30:05,465 INFO L129 PetriNetUnfolder]: 3/59 cut-off events. [2022-07-22 21:30:05,465 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-22 21:30:05,465 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:30:05,465 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] [2022-07-22 21:30:05,465 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2022-07-22 21:30:05,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:30:05,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1462435762, now seen corresponding path program 1 times [2022-07-22 21:30:05,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:30:05,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567762669] [2022-07-22 21:30:05,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:30:05,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:30:05,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:30:05,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:30:05,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:30:05,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567762669] [2022-07-22 21:30:05,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567762669] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:30:05,516 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:30:05,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 21:30:05,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381117695] [2022-07-22 21:30:05,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:30:05,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 21:30:05,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:30:05,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 21:30:05,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 21:30:05,522 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 678 out of 753 [2022-07-22 21:30:05,524 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 668 places, 753 transitions, 1524 flow. Second operand has 3 states, 3 states have (on average 679.0) internal successors, (2037), 3 states have internal predecessors, (2037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:05,524 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:30:05,524 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 678 of 753 [2022-07-22 21:30:05,524 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:30:05,904 INFO L129 PetriNetUnfolder]: 48/1204 cut-off events. [2022-07-22 21:30:05,904 INFO L130 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2022-07-22 21:30:05,929 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1240 conditions, 1204 events. 48/1204 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 5654 event pairs, 0 based on Foata normal form. 148/1230 useless extension candidates. Maximal degree in co-relation 758. Up to 16 conditions per place. [2022-07-22 21:30:05,937 INFO L132 encePairwiseOnDemand]: 688/753 looper letters, 17 selfloop transitions, 2 changer transitions 0/697 dead transitions. [2022-07-22 21:30:05,937 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 670 places, 697 transitions, 1450 flow [2022-07-22 21:30:05,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 21:30:05,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-22 21:30:05,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2117 transitions. [2022-07-22 21:30:05,942 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9371403275785746 [2022-07-22 21:30:05,942 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2117 transitions. [2022-07-22 21:30:05,942 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2117 transitions. [2022-07-22 21:30:05,944 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:30:05,944 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2117 transitions. [2022-07-22 21:30:05,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 705.6666666666666) internal successors, (2117), 3 states have internal predecessors, (2117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:05,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 753.0) internal successors, (3012), 4 states have internal predecessors, (3012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:05,954 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 753.0) internal successors, (3012), 4 states have internal predecessors, (3012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:05,954 INFO L186 Difference]: Start difference. First operand has 668 places, 753 transitions, 1524 flow. Second operand 3 states and 2117 transitions. [2022-07-22 21:30:05,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 670 places, 697 transitions, 1450 flow [2022-07-22 21:30:05,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 670 places, 697 transitions, 1450 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-22 21:30:05,967 INFO L242 Difference]: Finished difference. Result has 671 places, 692 transitions, 1412 flow [2022-07-22 21:30:05,968 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=753, PETRI_DIFFERENCE_MINUEND_FLOW=1400, PETRI_DIFFERENCE_MINUEND_PLACES=668, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=691, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=689, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1412, PETRI_PLACES=671, PETRI_TRANSITIONS=692} [2022-07-22 21:30:05,969 INFO L279 CegarLoopForPetriNet]: 668 programPoint places, 3 predicate places. [2022-07-22 21:30:05,969 INFO L495 AbstractCegarLoop]: Abstraction has has 671 places, 692 transitions, 1412 flow [2022-07-22 21:30:05,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 679.0) internal successors, (2037), 3 states have internal predecessors, (2037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:05,970 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:30:05,971 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] [2022-07-22 21:30:05,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 21:30:05,971 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2022-07-22 21:30:05,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:30:05,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1233700550, now seen corresponding path program 1 times [2022-07-22 21:30:05,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:30:05,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728181328] [2022-07-22 21:30:05,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:30:05,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:30:05,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:30:06,017 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:30:06,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:30:06,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728181328] [2022-07-22 21:30:06,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728181328] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 21:30:06,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010691535] [2022-07-22 21:30:06,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:30:06,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:30:06,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:30:06,027 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) [2022-07-22 21:30:06,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 21:30:06,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:30:06,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 21:30:06,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 21:30:06,216 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:30:06,216 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 21:30:06,234 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:30:06,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010691535] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 21:30:06,235 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 21:30:06,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2022-07-22 21:30:06,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10082007] [2022-07-22 21:30:06,235 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 21:30:06,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 21:30:06,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:30:06,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 21:30:06,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-07-22 21:30:06,242 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 678 out of 753 [2022-07-22 21:30:06,247 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 671 places, 692 transitions, 1412 flow. Second operand has 6 states, 6 states have (on average 682.0) internal successors, (4092), 6 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:06,247 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:30:06,247 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 678 of 753 [2022-07-22 21:30:06,247 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:30:06,608 INFO L129 PetriNetUnfolder]: 48/1213 cut-off events. [2022-07-22 21:30:06,608 INFO L130 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2022-07-22 21:30:06,669 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1264 conditions, 1213 events. 48/1213 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 5644 event pairs, 0 based on Foata normal form. 2/1094 useless extension candidates. Maximal degree in co-relation 1200. Up to 10 conditions per place. [2022-07-22 21:30:06,676 INFO L132 encePairwiseOnDemand]: 749/753 looper letters, 21 selfloop transitions, 5 changer transitions 0/704 dead transitions. [2022-07-22 21:30:06,676 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 675 places, 704 transitions, 1490 flow [2022-07-22 21:30:06,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 21:30:06,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-22 21:30:06,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3418 transitions. [2022-07-22 21:30:06,683 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9078353253652058 [2022-07-22 21:30:06,684 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3418 transitions. [2022-07-22 21:30:06,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3418 transitions. [2022-07-22 21:30:06,686 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:30:06,686 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3418 transitions. [2022-07-22 21:30:06,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 683.6) internal successors, (3418), 5 states have internal predecessors, (3418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:06,698 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 753.0) internal successors, (4518), 6 states have internal predecessors, (4518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:06,701 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 753.0) internal successors, (4518), 6 states have internal predecessors, (4518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:06,701 INFO L186 Difference]: Start difference. First operand has 671 places, 692 transitions, 1412 flow. Second operand 5 states and 3418 transitions. [2022-07-22 21:30:06,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 675 places, 704 transitions, 1490 flow [2022-07-22 21:30:06,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 674 places, 704 transitions, 1488 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-22 21:30:06,712 INFO L242 Difference]: Finished difference. Result has 677 places, 694 transitions, 1440 flow [2022-07-22 21:30:06,713 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=753, PETRI_DIFFERENCE_MINUEND_FLOW=1410, PETRI_DIFFERENCE_MINUEND_PLACES=670, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=692, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=688, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1440, PETRI_PLACES=677, PETRI_TRANSITIONS=694} [2022-07-22 21:30:06,714 INFO L279 CegarLoopForPetriNet]: 668 programPoint places, 9 predicate places. [2022-07-22 21:30:06,714 INFO L495 AbstractCegarLoop]: Abstraction has has 677 places, 694 transitions, 1440 flow [2022-07-22 21:30:06,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 682.0) internal successors, (4092), 6 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:06,716 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:30:06,716 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] [2022-07-22 21:30:06,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 21:30:06,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-07-22 21:30:06,925 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2022-07-22 21:30:06,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:30:06,925 INFO L85 PathProgramCache]: Analyzing trace with hash 744387910, now seen corresponding path program 2 times [2022-07-22 21:30:06,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:30:06,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212788116] [2022-07-22 21:30:06,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:30:06,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:30:06,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:30:06,978 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-22 21:30:06,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:30:06,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212788116] [2022-07-22 21:30:06,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212788116] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:30:06,979 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:30:06,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 21:30:06,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668291813] [2022-07-22 21:30:06,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:30:06,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 21:30:06,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:30:06,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 21:30:06,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 21:30:06,985 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 675 out of 753 [2022-07-22 21:30:06,987 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 677 places, 694 transitions, 1440 flow. Second operand has 4 states, 4 states have (on average 676.0) internal successors, (2704), 4 states have internal predecessors, (2704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:06,987 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:30:06,987 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 675 of 753 [2022-07-22 21:30:06,987 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:30:07,317 INFO L129 PetriNetUnfolder]: 48/1209 cut-off events. [2022-07-22 21:30:07,317 INFO L130 PetriNetUnfolder]: For 31/31 co-relation queries the response was YES. [2022-07-22 21:30:07,344 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1263 conditions, 1209 events. 48/1209 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 5638 event pairs, 0 based on Foata normal form. 0/1090 useless extension candidates. Maximal degree in co-relation 1177. Up to 13 conditions per place. [2022-07-22 21:30:07,360 INFO L132 encePairwiseOnDemand]: 747/753 looper letters, 10 selfloop transitions, 4 changer transitions 0/690 dead transitions. [2022-07-22 21:30:07,371 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 676 places, 690 transitions, 1460 flow [2022-07-22 21:30:07,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 21:30:07,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-22 21:30:07,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2716 transitions. [2022-07-22 21:30:07,378 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9017264276228419 [2022-07-22 21:30:07,378 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2716 transitions. [2022-07-22 21:30:07,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2716 transitions. [2022-07-22 21:30:07,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:30:07,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2716 transitions. [2022-07-22 21:30:07,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 679.0) internal successors, (2716), 4 states have internal predecessors, (2716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:07,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 753.0) internal successors, (3765), 5 states have internal predecessors, (3765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:07,389 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 753.0) internal successors, (3765), 5 states have internal predecessors, (3765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:07,389 INFO L186 Difference]: Start difference. First operand has 677 places, 694 transitions, 1440 flow. Second operand 4 states and 2716 transitions. [2022-07-22 21:30:07,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 676 places, 690 transitions, 1460 flow [2022-07-22 21:30:07,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 675 places, 690 transitions, 1454 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-07-22 21:30:07,458 INFO L242 Difference]: Finished difference. Result has 675 places, 690 transitions, 1434 flow [2022-07-22 21:30:07,460 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=753, PETRI_DIFFERENCE_MINUEND_FLOW=1426, PETRI_DIFFERENCE_MINUEND_PLACES=672, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=690, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=686, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1434, PETRI_PLACES=675, PETRI_TRANSITIONS=690} [2022-07-22 21:30:07,460 INFO L279 CegarLoopForPetriNet]: 668 programPoint places, 7 predicate places. [2022-07-22 21:30:07,460 INFO L495 AbstractCegarLoop]: Abstraction has has 675 places, 690 transitions, 1434 flow [2022-07-22 21:30:07,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 676.0) internal successors, (2704), 4 states have internal predecessors, (2704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:07,461 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:30:07,462 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:30:07,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 21:30:07,462 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting worker_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2022-07-22 21:30:07,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:30:07,462 INFO L85 PathProgramCache]: Analyzing trace with hash 607977753, now seen corresponding path program 1 times [2022-07-22 21:30:07,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:30:07,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133573600] [2022-07-22 21:30:07,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:30:07,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:30:07,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:30:08,731 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-22 21:30:08,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:30:08,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133573600] [2022-07-22 21:30:08,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133573600] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:30:08,732 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:30:08,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-07-22 21:30:08,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598164185] [2022-07-22 21:30:08,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:30:08,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-22 21:30:08,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:30:08,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-22 21:30:08,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=316, Unknown=0, NotChecked=0, Total=420 [2022-07-22 21:30:08,745 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 523 out of 753 [2022-07-22 21:30:08,753 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 675 places, 690 transitions, 1434 flow. Second operand has 21 states, 21 states have (on average 525.6190476190476) internal successors, (11038), 21 states have internal predecessors, (11038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:08,753 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:30:08,754 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 523 of 753 [2022-07-22 21:30:08,754 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand