./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-divine/barrier_3t.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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/barrier_3t.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 116240ce9d1e33454ba4eae840c2d7b67606f3cd4ffa1a06798f06dcbc1241fc --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 21:14:52,929 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 21:14:52,936 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 21:14:52,982 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 21:14:52,982 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 21:14:52,984 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 21:14:52,985 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 21:14:52,987 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 21:14:53,003 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 21:14:53,006 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 21:14:53,007 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 21:14:53,008 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 21:14:53,009 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 21:14:53,010 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 21:14:53,011 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 21:14:53,014 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 21:14:53,015 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 21:14:53,016 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 21:14:53,017 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 21:14:53,021 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 21:14:53,022 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 21:14:53,023 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 21:14:53,024 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 21:14:53,024 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 21:14:53,026 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 21:14:53,031 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 21:14:53,032 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 21:14:53,047 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 21:14:53,048 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 21:14:53,050 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 21:14:53,051 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 21:14:53,051 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 21:14:53,052 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 21:14:53,053 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 21:14:53,053 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 21:14:53,054 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 21:14:53,054 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 21:14:53,054 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 21:14:53,055 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 21:14:53,055 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 21:14:53,055 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 21:14:53,056 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 21:14:53,057 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 21:14:53,089 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 21:14:53,089 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 21:14:53,090 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 21:14:53,090 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 21:14:53,090 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 21:14:53,091 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 21:14:53,091 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 21:14:53,091 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 21:14:53,092 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 21:14:53,092 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 21:14:53,093 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 21:14:53,093 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 21:14:53,093 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 21:14:53,093 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 21:14:53,093 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 21:14:53,093 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 21:14:53,094 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 21:14:53,094 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 21:14:53,094 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 21:14:53,094 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 21:14:53,107 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 21:14:53,107 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 21:14:53,108 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 21:14:53,108 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 21:14:53,108 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:14:53,108 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 21:14:53,108 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 21:14:53,109 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 21:14:53,109 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 21:14:53,109 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 21:14:53,109 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 21:14:53,109 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 21:14:53,109 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 21:14:53,110 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 116240ce9d1e33454ba4eae840c2d7b67606f3cd4ffa1a06798f06dcbc1241fc [2022-07-19 21:14:53,429 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 21:14:53,454 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 21:14:53,456 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 21:14:53,457 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 21:14:53,457 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 21:14:53,458 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-divine/barrier_3t.i [2022-07-19 21:14:53,524 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1742a878e/21061804bd1445e6a005e854d055537f/FLAG0468081d9 [2022-07-19 21:14:53,959 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 21:14:53,959 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/barrier_3t.i [2022-07-19 21:14:53,970 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1742a878e/21061804bd1445e6a005e854d055537f/FLAG0468081d9 [2022-07-19 21:14:53,990 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1742a878e/21061804bd1445e6a005e854d055537f [2022-07-19 21:14:53,992 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 21:14:53,993 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 21:14:53,994 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 21:14:53,995 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 21:14:53,997 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 21:14:53,997 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:14:53" (1/1) ... [2022-07-19 21:14:53,998 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@de3d998 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:14:53, skipping insertion in model container [2022-07-19 21:14:53,998 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:14:53" (1/1) ... [2022-07-19 21:14:54,003 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 21:14:54,030 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 21:14:54,141 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-07-19 21:14:54,273 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/barrier_3t.i[30484,30497] [2022-07-19 21:14:54,299 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/barrier_3t.i[31858,31871] [2022-07-19 21:14:54,300 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/barrier_3t.i[31909,31922] [2022-07-19 21:14:54,303 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/barrier_3t.i[32058,32071] [2022-07-19 21:14:54,304 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/barrier_3t.i[32135,32148] [2022-07-19 21:14:54,305 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/barrier_3t.i[32182,32195] [2022-07-19 21:14:54,307 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/barrier_3t.i[32291,32304] [2022-07-19 21:14:54,313 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/barrier_3t.i[32410,32423] [2022-07-19 21:14:54,314 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/barrier_3t.i[32458,32471] [2022-07-19 21:14:54,315 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/barrier_3t.i[32535,32548] [2022-07-19 21:14:54,317 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/barrier_3t.i[32661,32674] [2022-07-19 21:14:54,327 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/barrier_3t.i[33244,33257] [2022-07-19 21:14:54,327 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/barrier_3t.i[33321,33334] [2022-07-19 21:14:54,331 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:14:54,337 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 21:14:54,345 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-07-19 21:14:54,357 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/barrier_3t.i[30484,30497] [2022-07-19 21:14:54,361 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/barrier_3t.i[31858,31871] [2022-07-19 21:14:54,362 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/barrier_3t.i[31909,31922] [2022-07-19 21:14:54,363 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/barrier_3t.i[32058,32071] [2022-07-19 21:14:54,367 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/barrier_3t.i[32135,32148] [2022-07-19 21:14:54,368 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/barrier_3t.i[32182,32195] [2022-07-19 21:14:54,369 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/barrier_3t.i[32291,32304] [2022-07-19 21:14:54,369 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/barrier_3t.i[32410,32423] [2022-07-19 21:14:54,372 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/barrier_3t.i[32458,32471] [2022-07-19 21:14:54,373 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/barrier_3t.i[32535,32548] [2022-07-19 21:14:54,373 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/barrier_3t.i[32661,32674] [2022-07-19 21:14:54,378 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/barrier_3t.i[33244,33257] [2022-07-19 21:14:54,382 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/barrier_3t.i[33321,33334] [2022-07-19 21:14:54,382 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:14:54,415 INFO L208 MainTranslator]: Completed translation [2022-07-19 21:14:54,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:14:54 WrapperNode [2022-07-19 21:14:54,416 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 21:14:54,417 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 21:14:54,417 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 21:14:54,417 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 21:14:54,422 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:14:54" (1/1) ... [2022-07-19 21:14:54,439 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:14:54" (1/1) ... [2022-07-19 21:14:54,487 INFO L137 Inliner]: procedures = 174, calls = 83, calls flagged for inlining = 6, calls inlined = 8, statements flattened = 526 [2022-07-19 21:14:54,487 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 21:14:54,488 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 21:14:54,488 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 21:14:54,488 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 21:14:54,494 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:14:54" (1/1) ... [2022-07-19 21:14:54,494 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:14:54" (1/1) ... [2022-07-19 21:14:54,512 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:14:54" (1/1) ... [2022-07-19 21:14:54,517 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:14:54" (1/1) ... [2022-07-19 21:14:54,547 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:14:54" (1/1) ... [2022-07-19 21:14:54,553 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:14:54" (1/1) ... [2022-07-19 21:14:54,560 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:14:54" (1/1) ... [2022-07-19 21:14:54,564 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 21:14:54,564 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 21:14:54,565 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 21:14:54,565 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 21:14:54,566 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:14:54" (1/1) ... [2022-07-19 21:14:54,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:14:54,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:14:54,614 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) [2022-07-19 21:14:54,629 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 [2022-07-19 21:14:54,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 21:14:54,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 21:14:54,641 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-07-19 21:14:54,641 INFO L130 BoogieDeclarations]: Found specification of procedure worker_fn [2022-07-19 21:14:54,641 INFO L138 BoogieDeclarations]: Found implementation of procedure worker_fn [2022-07-19 21:14:54,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 21:14:54,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-19 21:14:54,642 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 21:14:54,642 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-19 21:14:54,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 21:14:54,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 21:14:54,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 21:14:54,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 21:14:54,643 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-19 21:14:54,764 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 21:14:54,765 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 21:14:55,253 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 21:14:55,268 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 21:14:55,269 INFO L299 CfgBuilder]: Removed 20 assume(true) statements. [2022-07-19 21:14:55,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:14:55 BoogieIcfgContainer [2022-07-19 21:14:55,270 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 21:14:55,272 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 21:14:55,272 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 21:14:55,289 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 21:14:55,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:14:53" (1/3) ... [2022-07-19 21:14:55,290 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cf27a45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:14:55, skipping insertion in model container [2022-07-19 21:14:55,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:14:54" (2/3) ... [2022-07-19 21:14:55,290 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cf27a45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:14:55, skipping insertion in model container [2022-07-19 21:14:55,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:14:55" (3/3) ... [2022-07-19 21:14:55,291 INFO L111 eAbstractionObserver]: Analyzing ICFG barrier_3t.i [2022-07-19 21:14:55,295 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-19 21:14:55,301 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 21:14:55,302 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 23 error locations. [2022-07-19 21:14:55,302 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-19 21:14:55,363 INFO L135 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-07-19 21:14:55,389 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 519 places, 586 transitions, 1180 flow [2022-07-19 21:14:55,598 INFO L129 PetriNetUnfolder]: 106/863 cut-off events. [2022-07-19 21:14:55,598 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-07-19 21:14:55,610 INFO L84 FinitePrefix]: Finished finitePrefix Result has 869 conditions, 863 events. 106/863 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 3081 event pairs, 0 based on Foata normal form. 0/719 useless extension candidates. Maximal degree in co-relation 512. Up to 4 conditions per place. [2022-07-19 21:14:55,611 INFO L82 GeneralOperation]: Start removeDead. Operand has 519 places, 586 transitions, 1180 flow [2022-07-19 21:14:55,623 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 519 places, 586 transitions, 1180 flow [2022-07-19 21:14:55,635 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:14:55,639 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@17a901a4, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@55f7eac9 [2022-07-19 21:14:55,639 INFO L358 AbstractCegarLoop]: Starting to check reachability of 34 error locations. [2022-07-19 21:14:55,644 INFO L129 PetriNetUnfolder]: 3/59 cut-off events. [2022-07-19 21:14:55,644 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-19 21:14:55,644 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:14:55,645 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] [2022-07-19 21:14:55,645 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2022-07-19 21:14:55,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:14:55,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1596734137, now seen corresponding path program 1 times [2022-07-19 21:14:55,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:14:55,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168968382] [2022-07-19 21:14:55,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:14:55,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:14:55,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:14:55,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:14:55,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:14:55,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168968382] [2022-07-19 21:14:55,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168968382] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:14:55,856 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:14:55,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:14:55,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132666442] [2022-07-19 21:14:55,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:14:55,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:14:55,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:14:55,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:14:55,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:14:55,888 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 532 out of 586 [2022-07-19 21:14:55,894 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 519 places, 586 transitions, 1180 flow. Second operand has 3 states, 3 states have (on average 533.0) internal successors, (1599), 3 states have internal predecessors, (1599), 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) [2022-07-19 21:14:55,894 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:14:55,894 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 532 of 586 [2022-07-19 21:14:55,895 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:14:56,087 INFO L129 PetriNetUnfolder]: 40/803 cut-off events. [2022-07-19 21:14:56,087 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-07-19 21:14:56,098 INFO L84 FinitePrefix]: Finished finitePrefix Result has 827 conditions, 803 events. 40/803 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2919 event pairs, 0 based on Foata normal form. 65/790 useless extension candidates. Maximal degree in co-relation 473. Up to 12 conditions per place. [2022-07-19 21:14:56,103 INFO L132 encePairwiseOnDemand]: 540/586 looper letters, 15 selfloop transitions, 2 changer transitions 0/549 dead transitions. [2022-07-19 21:14:56,103 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 521 places, 549 transitions, 1140 flow [2022-07-19 21:14:56,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:14:56,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:14:56,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1658 transitions. [2022-07-19 21:14:56,144 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9431171786120591 [2022-07-19 21:14:56,145 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1658 transitions. [2022-07-19 21:14:56,145 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1658 transitions. [2022-07-19 21:14:56,149 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:14:56,151 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1658 transitions. [2022-07-19 21:14:56,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 552.6666666666666) internal successors, (1658), 3 states have internal predecessors, (1658), 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) [2022-07-19 21:14:56,167 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 586.0) internal successors, (2344), 4 states have internal predecessors, (2344), 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) [2022-07-19 21:14:56,169 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 586.0) internal successors, (2344), 4 states have internal predecessors, (2344), 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) [2022-07-19 21:14:56,171 INFO L186 Difference]: Start difference. First operand has 519 places, 586 transitions, 1180 flow. Second operand 3 states and 1658 transitions. [2022-07-19 21:14:56,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 521 places, 549 transitions, 1140 flow [2022-07-19 21:14:56,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 521 places, 549 transitions, 1140 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-19 21:14:56,191 INFO L242 Difference]: Finished difference. Result has 522 places, 544 transitions, 1106 flow [2022-07-19 21:14:56,193 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=586, PETRI_DIFFERENCE_MINUEND_FLOW=1094, PETRI_DIFFERENCE_MINUEND_PLACES=519, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=543, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=541, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1106, PETRI_PLACES=522, PETRI_TRANSITIONS=544} [2022-07-19 21:14:56,197 INFO L279 CegarLoopForPetriNet]: 519 programPoint places, 3 predicate places. [2022-07-19 21:14:56,197 INFO L495 AbstractCegarLoop]: Abstraction has has 522 places, 544 transitions, 1106 flow [2022-07-19 21:14:56,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 533.0) internal successors, (1599), 3 states have internal predecessors, (1599), 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) [2022-07-19 21:14:56,198 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:14:56,199 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] [2022-07-19 21:14:56,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 21:14:56,203 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2022-07-19 21:14:56,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:14:56,204 INFO L85 PathProgramCache]: Analyzing trace with hash -95295206, now seen corresponding path program 1 times [2022-07-19 21:14:56,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:14:56,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123234178] [2022-07-19 21:14:56,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:14:56,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:14:56,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:14:56,306 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:14:56,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:14:56,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123234178] [2022-07-19 21:14:56,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123234178] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:14:56,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857499546] [2022-07-19 21:14:56,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:14:56,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:14:56,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:14:56,355 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) [2022-07-19 21:14:56,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 21:14:56,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:14:56,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 21:14:56,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:14:56,603 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:14:56,603 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:14:56,648 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:14:56,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857499546] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 21:14:56,648 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 21:14:56,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2022-07-19 21:14:56,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045243015] [2022-07-19 21:14:56,650 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 21:14:56,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 21:14:56,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:14:56,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 21:14:56,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-07-19 21:14:56,656 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 532 out of 586 [2022-07-19 21:14:56,670 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 522 places, 544 transitions, 1106 flow. Second operand has 6 states, 6 states have (on average 536.0) internal successors, (3216), 6 states have internal predecessors, (3216), 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) [2022-07-19 21:14:56,670 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:14:56,671 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 532 of 586 [2022-07-19 21:14:56,671 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:14:56,959 INFO L129 PetriNetUnfolder]: 40/812 cut-off events. [2022-07-19 21:14:56,960 INFO L130 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-07-19 21:14:56,987 INFO L84 FinitePrefix]: Finished finitePrefix Result has 851 conditions, 812 events. 40/812 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2910 event pairs, 0 based on Foata normal form. 2/737 useless extension candidates. Maximal degree in co-relation 788. Up to 7 conditions per place. [2022-07-19 21:14:56,991 INFO L132 encePairwiseOnDemand]: 582/586 looper letters, 19 selfloop transitions, 5 changer transitions 0/556 dead transitions. [2022-07-19 21:14:56,992 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 526 places, 556 transitions, 1180 flow [2022-07-19 21:14:56,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:14:56,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-19 21:14:56,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2686 transitions. [2022-07-19 21:14:56,997 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9167235494880546 [2022-07-19 21:14:56,997 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2686 transitions. [2022-07-19 21:14:56,997 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2686 transitions. [2022-07-19 21:14:56,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:14:56,998 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2686 transitions. [2022-07-19 21:14:57,003 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 537.2) internal successors, (2686), 5 states have internal predecessors, (2686), 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) [2022-07-19 21:14:57,010 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 586.0) internal successors, (3516), 6 states have internal predecessors, (3516), 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) [2022-07-19 21:14:57,025 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 586.0) internal successors, (3516), 6 states have internal predecessors, (3516), 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) [2022-07-19 21:14:57,026 INFO L186 Difference]: Start difference. First operand has 522 places, 544 transitions, 1106 flow. Second operand 5 states and 2686 transitions. [2022-07-19 21:14:57,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 526 places, 556 transitions, 1180 flow [2022-07-19 21:14:57,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 525 places, 556 transitions, 1178 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-19 21:14:57,034 INFO L242 Difference]: Finished difference. Result has 528 places, 546 transitions, 1134 flow [2022-07-19 21:14:57,040 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=586, PETRI_DIFFERENCE_MINUEND_FLOW=1104, PETRI_DIFFERENCE_MINUEND_PLACES=521, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=544, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=540, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1134, PETRI_PLACES=528, PETRI_TRANSITIONS=546} [2022-07-19 21:14:57,052 INFO L279 CegarLoopForPetriNet]: 519 programPoint places, 9 predicate places. [2022-07-19 21:14:57,052 INFO L495 AbstractCegarLoop]: Abstraction has has 528 places, 546 transitions, 1134 flow [2022-07-19 21:14:57,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 536.0) internal successors, (3216), 6 states have internal predecessors, (3216), 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) [2022-07-19 21:14:57,054 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:14:57,055 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] [2022-07-19 21:14:57,073 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-19 21:14:57,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:14:57,274 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2022-07-19 21:14:57,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:14:57,274 INFO L85 PathProgramCache]: Analyzing trace with hash -215230342, now seen corresponding path program 2 times [2022-07-19 21:14:57,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:14:57,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029097517] [2022-07-19 21:14:57,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:14:57,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:14:57,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:14:57,342 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-19 21:14:57,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:14:57,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029097517] [2022-07-19 21:14:57,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029097517] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:14:57,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:14:57,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 21:14:57,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581486164] [2022-07-19 21:14:57,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:14:57,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 21:14:57,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:14:57,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 21:14:57,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 21:14:57,346 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 535 out of 586 [2022-07-19 21:14:57,348 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 528 places, 546 transitions, 1134 flow. Second operand has 4 states, 4 states have (on average 536.0) internal successors, (2144), 4 states have internal predecessors, (2144), 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) [2022-07-19 21:14:57,348 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:14:57,348 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 535 of 586 [2022-07-19 21:14:57,348 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:14:57,465 INFO L129 PetriNetUnfolder]: 40/810 cut-off events. [2022-07-19 21:14:57,465 INFO L130 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-07-19 21:14:57,472 INFO L84 FinitePrefix]: Finished finitePrefix Result has 847 conditions, 810 events. 40/810 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2907 event pairs, 0 based on Foata normal form. 0/734 useless extension candidates. Maximal degree in co-relation 762. Up to 5 conditions per place. [2022-07-19 21:14:57,477 INFO L132 encePairwiseOnDemand]: 583/586 looper letters, 5 selfloop transitions, 2 changer transitions 0/544 dead transitions. [2022-07-19 21:14:57,477 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 529 places, 544 transitions, 1144 flow [2022-07-19 21:14:57,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 21:14:57,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-19 21:14:57,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2148 transitions. [2022-07-19 21:14:57,482 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9163822525597269 [2022-07-19 21:14:57,482 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2148 transitions. [2022-07-19 21:14:57,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2148 transitions. [2022-07-19 21:14:57,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:14:57,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2148 transitions. [2022-07-19 21:14:57,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 537.0) internal successors, (2148), 4 states have internal predecessors, (2148), 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) [2022-07-19 21:14:57,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 586.0) internal successors, (2930), 5 states have internal predecessors, (2930), 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) [2022-07-19 21:14:57,493 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 586.0) internal successors, (2930), 5 states have internal predecessors, (2930), 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) [2022-07-19 21:14:57,493 INFO L186 Difference]: Start difference. First operand has 528 places, 546 transitions, 1134 flow. Second operand 4 states and 2148 transitions. [2022-07-19 21:14:57,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 529 places, 544 transitions, 1144 flow [2022-07-19 21:14:57,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 528 places, 544 transitions, 1138 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-07-19 21:14:57,506 INFO L242 Difference]: Finished difference. Result has 528 places, 544 transitions, 1128 flow [2022-07-19 21:14:57,507 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=586, PETRI_DIFFERENCE_MINUEND_FLOW=1124, PETRI_DIFFERENCE_MINUEND_PLACES=525, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=544, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=542, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1128, PETRI_PLACES=528, PETRI_TRANSITIONS=544} [2022-07-19 21:14:57,509 INFO L279 CegarLoopForPetriNet]: 519 programPoint places, 9 predicate places. [2022-07-19 21:14:57,510 INFO L495 AbstractCegarLoop]: Abstraction has has 528 places, 544 transitions, 1128 flow [2022-07-19 21:14:57,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 536.0) internal successors, (2144), 4 states have internal predecessors, (2144), 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) [2022-07-19 21:14:57,511 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:14:57,513 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] [2022-07-19 21:14:57,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 21:14:57,517 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2022-07-19 21:14:57,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:14:57,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1540121218, now seen corresponding path program 1 times [2022-07-19 21:14:57,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:14:57,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548287509] [2022-07-19 21:14:57,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:14:57,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:14:57,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 21:14:57,604 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-19 21:14:57,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 21:14:57,657 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-19 21:14:57,657 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-19 21:14:57,658 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (33 of 34 remaining) [2022-07-19 21:14:57,659 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (32 of 34 remaining) [2022-07-19 21:14:57,660 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (31 of 34 remaining) [2022-07-19 21:14:57,660 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (30 of 34 remaining) [2022-07-19 21:14:57,660 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (29 of 34 remaining) [2022-07-19 21:14:57,660 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (28 of 34 remaining) [2022-07-19 21:14:57,660 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (27 of 34 remaining) [2022-07-19 21:14:57,661 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION (26 of 34 remaining) [2022-07-19 21:14:57,661 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION (25 of 34 remaining) [2022-07-19 21:14:57,661 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION (24 of 34 remaining) [2022-07-19 21:14:57,661 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION (23 of 34 remaining) [2022-07-19 21:14:57,661 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (22 of 34 remaining) [2022-07-19 21:14:57,662 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION (21 of 34 remaining) [2022-07-19 21:14:57,662 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION (20 of 34 remaining) [2022-07-19 21:14:57,662 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (19 of 34 remaining) [2022-07-19 21:14:57,662 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr1ASSERT_VIOLATIONERROR_FUNCTION (18 of 34 remaining) [2022-07-19 21:14:57,662 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr3ASSERT_VIOLATIONERROR_FUNCTION (17 of 34 remaining) [2022-07-19 21:14:57,663 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr2ASSERT_VIOLATIONERROR_FUNCTION (16 of 34 remaining) [2022-07-19 21:14:57,663 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr4ASSERT_VIOLATIONERROR_FUNCTION (15 of 34 remaining) [2022-07-19 21:14:57,663 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr5ASSERT_VIOLATIONERROR_FUNCTION (14 of 34 remaining) [2022-07-19 21:14:57,663 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr8ASSERT_VIOLATIONERROR_FUNCTION (13 of 34 remaining) [2022-07-19 21:14:57,663 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr6ASSERT_VIOLATIONERROR_FUNCTION (12 of 34 remaining) [2022-07-19 21:14:57,664 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr9ASSERT_VIOLATIONERROR_FUNCTION (11 of 34 remaining) [2022-07-19 21:14:57,664 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr7ASSERT_VIOLATIONERROR_FUNCTION (10 of 34 remaining) [2022-07-19 21:14:57,664 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (9 of 34 remaining) [2022-07-19 21:14:57,664 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr1ASSERT_VIOLATIONERROR_FUNCTION (8 of 34 remaining) [2022-07-19 21:14:57,664 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr3ASSERT_VIOLATIONERROR_FUNCTION (7 of 34 remaining) [2022-07-19 21:14:57,664 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr2ASSERT_VIOLATIONERROR_FUNCTION (6 of 34 remaining) [2022-07-19 21:14:57,665 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr4ASSERT_VIOLATIONERROR_FUNCTION (5 of 34 remaining) [2022-07-19 21:14:57,665 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr5ASSERT_VIOLATIONERROR_FUNCTION (4 of 34 remaining) [2022-07-19 21:14:57,665 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr8ASSERT_VIOLATIONERROR_FUNCTION (3 of 34 remaining) [2022-07-19 21:14:57,665 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr6ASSERT_VIOLATIONERROR_FUNCTION (2 of 34 remaining) [2022-07-19 21:14:57,665 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr9ASSERT_VIOLATIONERROR_FUNCTION (1 of 34 remaining) [2022-07-19 21:14:57,666 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr7ASSERT_VIOLATIONERROR_FUNCTION (0 of 34 remaining) [2022-07-19 21:14:57,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 21:14:57,666 INFO L356 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2022-07-19 21:14:57,668 WARN L231 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-19 21:14:57,668 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-07-19 21:14:57,721 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-07-19 21:14:57,726 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 722 places, 818 transitions, 1654 flow [2022-07-19 21:14:58,118 INFO L129 PetriNetUnfolder]: 179/1421 cut-off events. [2022-07-19 21:14:58,119 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-07-19 21:14:58,144 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1435 conditions, 1421 events. 179/1421 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 6684 event pairs, 0 based on Foata normal form. 0/1179 useless extension candidates. Maximal degree in co-relation 865. Up to 8 conditions per place. [2022-07-19 21:14:58,144 INFO L82 GeneralOperation]: Start removeDead. Operand has 722 places, 818 transitions, 1654 flow [2022-07-19 21:14:58,163 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 722 places, 818 transitions, 1654 flow [2022-07-19 21:14:58,164 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:14:58,164 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@17a901a4, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@55f7eac9 [2022-07-19 21:14:58,165 INFO L358 AbstractCegarLoop]: Starting to check reachability of 44 error locations. [2022-07-19 21:14:58,167 INFO L129 PetriNetUnfolder]: 3/58 cut-off events. [2022-07-19 21:14:58,168 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-19 21:14:58,168 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:14:58,168 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] [2022-07-19 21:14:58,168 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 41 more)] === [2022-07-19 21:14:58,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:14:58,169 INFO L85 PathProgramCache]: Analyzing trace with hash -997182855, now seen corresponding path program 1 times [2022-07-19 21:14:58,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:14:58,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462504589] [2022-07-19 21:14:58,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:14:58,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:14:58,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:14:58,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:14:58,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:14:58,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462504589] [2022-07-19 21:14:58,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462504589] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:14:58,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:14:58,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:14:58,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809866954] [2022-07-19 21:14:58,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:14:58,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:14:58,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:14:58,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:14:58,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:14:58,195 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 744 out of 818 [2022-07-19 21:14:58,197 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 722 places, 818 transitions, 1654 flow. Second operand has 3 states, 3 states have (on average 745.0) internal successors, (2235), 3 states have internal predecessors, (2235), 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) [2022-07-19 21:14:58,198 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:14:58,198 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 744 of 818 [2022-07-19 21:14:58,198 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:14:58,505 INFO L129 PetriNetUnfolder]: 68/1316 cut-off events. [2022-07-19 21:14:58,505 INFO L130 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2022-07-19 21:14:58,530 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1352 conditions, 1316 events. 68/1316 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 6420 event pairs, 0 based on Foata normal form. 147/1332 useless extension candidates. Maximal degree in co-relation 822. Up to 16 conditions per place. [2022-07-19 21:14:58,542 INFO L132 encePairwiseOnDemand]: 754/818 looper letters, 17 selfloop transitions, 2 changer transitions 0/763 dead transitions. [2022-07-19 21:14:58,542 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 724 places, 763 transitions, 1582 flow [2022-07-19 21:14:58,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:14:58,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:14:58,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2314 transitions. [2022-07-19 21:14:58,547 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9429502852485737 [2022-07-19 21:14:58,547 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2314 transitions. [2022-07-19 21:14:58,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2314 transitions. [2022-07-19 21:14:58,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:14:58,548 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2314 transitions. [2022-07-19 21:14:58,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 771.3333333333334) internal successors, (2314), 3 states have internal predecessors, (2314), 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) [2022-07-19 21:14:58,556 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 818.0) internal successors, (3272), 4 states have internal predecessors, (3272), 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) [2022-07-19 21:14:58,557 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 818.0) internal successors, (3272), 4 states have internal predecessors, (3272), 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) [2022-07-19 21:14:58,558 INFO L186 Difference]: Start difference. First operand has 722 places, 818 transitions, 1654 flow. Second operand 3 states and 2314 transitions. [2022-07-19 21:14:58,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 724 places, 763 transitions, 1582 flow [2022-07-19 21:14:58,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 724 places, 763 transitions, 1582 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-19 21:14:58,568 INFO L242 Difference]: Finished difference. Result has 725 places, 758 transitions, 1544 flow [2022-07-19 21:14:58,569 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=818, PETRI_DIFFERENCE_MINUEND_FLOW=1532, PETRI_DIFFERENCE_MINUEND_PLACES=722, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=757, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=755, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1544, PETRI_PLACES=725, PETRI_TRANSITIONS=758} [2022-07-19 21:14:58,569 INFO L279 CegarLoopForPetriNet]: 722 programPoint places, 3 predicate places. [2022-07-19 21:14:58,569 INFO L495 AbstractCegarLoop]: Abstraction has has 725 places, 758 transitions, 1544 flow [2022-07-19 21:14:58,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 745.0) internal successors, (2235), 3 states have internal predecessors, (2235), 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) [2022-07-19 21:14:58,571 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:14:58,571 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] [2022-07-19 21:14:58,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 21:14:58,571 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 41 more)] === [2022-07-19 21:14:58,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:14:58,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1060665370, now seen corresponding path program 1 times [2022-07-19 21:14:58,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:14:58,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005368569] [2022-07-19 21:14:58,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:14:58,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:14:58,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:14:58,622 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:14:58,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:14:58,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005368569] [2022-07-19 21:14:58,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005368569] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:14:58,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956086495] [2022-07-19 21:14:58,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:14:58,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:14:58,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:14:58,642 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) [2022-07-19 21:14:58,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 21:14:58,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:14:58,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 21:14:58,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:14:58,828 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:14:58,828 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:14:58,844 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:14:58,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1956086495] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 21:14:58,845 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 21:14:58,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2022-07-19 21:14:58,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609506990] [2022-07-19 21:14:58,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 21:14:58,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 21:14:58,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:14:58,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 21:14:58,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-07-19 21:14:58,851 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 744 out of 818 [2022-07-19 21:14:58,855 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 725 places, 758 transitions, 1544 flow. Second operand has 6 states, 6 states have (on average 748.0) internal successors, (4488), 6 states have internal predecessors, (4488), 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) [2022-07-19 21:14:58,855 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:14:58,855 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 744 of 818 [2022-07-19 21:14:58,855 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:14:59,177 INFO L129 PetriNetUnfolder]: 68/1325 cut-off events. [2022-07-19 21:14:59,177 INFO L130 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2022-07-19 21:14:59,206 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1376 conditions, 1325 events. 68/1325 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 6410 event pairs, 0 based on Foata normal form. 2/1197 useless extension candidates. Maximal degree in co-relation 1312. Up to 10 conditions per place. [2022-07-19 21:14:59,216 INFO L132 encePairwiseOnDemand]: 814/818 looper letters, 21 selfloop transitions, 5 changer transitions 0/770 dead transitions. [2022-07-19 21:14:59,216 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 729 places, 770 transitions, 1622 flow [2022-07-19 21:14:59,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:14:59,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-19 21:14:59,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3748 transitions. [2022-07-19 21:14:59,223 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9163814180929095 [2022-07-19 21:14:59,223 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3748 transitions. [2022-07-19 21:14:59,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3748 transitions. [2022-07-19 21:14:59,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:14:59,263 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3748 transitions. [2022-07-19 21:14:59,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 749.6) internal successors, (3748), 5 states have internal predecessors, (3748), 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) [2022-07-19 21:14:59,275 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 818.0) internal successors, (4908), 6 states have internal predecessors, (4908), 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) [2022-07-19 21:14:59,277 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 818.0) internal successors, (4908), 6 states have internal predecessors, (4908), 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) [2022-07-19 21:14:59,278 INFO L186 Difference]: Start difference. First operand has 725 places, 758 transitions, 1544 flow. Second operand 5 states and 3748 transitions. [2022-07-19 21:14:59,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 729 places, 770 transitions, 1622 flow [2022-07-19 21:14:59,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 728 places, 770 transitions, 1620 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-19 21:14:59,288 INFO L242 Difference]: Finished difference. Result has 731 places, 760 transitions, 1572 flow [2022-07-19 21:14:59,289 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=818, PETRI_DIFFERENCE_MINUEND_FLOW=1542, PETRI_DIFFERENCE_MINUEND_PLACES=724, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=758, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=754, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1572, PETRI_PLACES=731, PETRI_TRANSITIONS=760} [2022-07-19 21:14:59,290 INFO L279 CegarLoopForPetriNet]: 722 programPoint places, 9 predicate places. [2022-07-19 21:14:59,290 INFO L495 AbstractCegarLoop]: Abstraction has has 731 places, 760 transitions, 1572 flow [2022-07-19 21:14:59,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 748.0) internal successors, (4488), 6 states have internal predecessors, (4488), 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) [2022-07-19 21:14:59,291 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:14:59,292 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] [2022-07-19 21:14:59,309 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-19 21:14:59,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-07-19 21:14:59,510 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 41 more)] === [2022-07-19 21:14:59,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:14:59,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1485775674, now seen corresponding path program 2 times [2022-07-19 21:14:59,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:14:59,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045274643] [2022-07-19 21:14:59,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:14:59,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:14:59,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:14:59,560 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-19 21:14:59,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:14:59,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045274643] [2022-07-19 21:14:59,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045274643] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:14:59,561 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:14:59,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 21:14:59,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040814286] [2022-07-19 21:14:59,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:14:59,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 21:14:59,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:14:59,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 21:14:59,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 21:14:59,566 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 747 out of 818 [2022-07-19 21:14:59,568 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 731 places, 760 transitions, 1572 flow. Second operand has 4 states, 4 states have (on average 748.0) internal successors, (2992), 4 states have internal predecessors, (2992), 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) [2022-07-19 21:14:59,568 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:14:59,568 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 747 of 818 [2022-07-19 21:14:59,568 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:14:59,878 INFO L129 PetriNetUnfolder]: 68/1323 cut-off events. [2022-07-19 21:14:59,879 INFO L130 PetriNetUnfolder]: For 31/31 co-relation queries the response was YES. [2022-07-19 21:14:59,902 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1372 conditions, 1323 events. 68/1323 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 6407 event pairs, 0 based on Foata normal form. 0/1194 useless extension candidates. Maximal degree in co-relation 1286. Up to 9 conditions per place. [2022-07-19 21:14:59,909 INFO L132 encePairwiseOnDemand]: 815/818 looper letters, 7 selfloop transitions, 2 changer transitions 0/758 dead transitions. [2022-07-19 21:14:59,910 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 732 places, 758 transitions, 1586 flow [2022-07-19 21:14:59,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 21:14:59,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-19 21:14:59,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2998 transitions. [2022-07-19 21:14:59,915 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9162591687041565 [2022-07-19 21:14:59,915 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2998 transitions. [2022-07-19 21:14:59,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2998 transitions. [2022-07-19 21:14:59,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:14:59,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2998 transitions. [2022-07-19 21:14:59,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 749.5) internal successors, (2998), 4 states have internal predecessors, (2998), 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) [2022-07-19 21:14:59,927 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 818.0) internal successors, (4090), 5 states have internal predecessors, (4090), 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) [2022-07-19 21:14:59,928 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 818.0) internal successors, (4090), 5 states have internal predecessors, (4090), 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) [2022-07-19 21:14:59,928 INFO L186 Difference]: Start difference. First operand has 731 places, 760 transitions, 1572 flow. Second operand 4 states and 2998 transitions. [2022-07-19 21:14:59,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 732 places, 758 transitions, 1586 flow [2022-07-19 21:14:59,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 731 places, 758 transitions, 1580 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-07-19 21:14:59,940 INFO L242 Difference]: Finished difference. Result has 731 places, 758 transitions, 1566 flow [2022-07-19 21:14:59,941 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=818, PETRI_DIFFERENCE_MINUEND_FLOW=1562, PETRI_DIFFERENCE_MINUEND_PLACES=728, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=758, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=756, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1566, PETRI_PLACES=731, PETRI_TRANSITIONS=758} [2022-07-19 21:14:59,942 INFO L279 CegarLoopForPetriNet]: 722 programPoint places, 9 predicate places. [2022-07-19 21:14:59,943 INFO L495 AbstractCegarLoop]: Abstraction has has 731 places, 758 transitions, 1566 flow [2022-07-19 21:14:59,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 748.0) internal successors, (2992), 4 states have internal predecessors, (2992), 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) [2022-07-19 21:14:59,943 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:14:59,944 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] [2022-07-19 21:14:59,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 21:14:59,944 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 41 more)] === [2022-07-19 21:14:59,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:14:59,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1603753880, now seen corresponding path program 1 times [2022-07-19 21:14:59,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:14:59,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13337112] [2022-07-19 21:14:59,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:14:59,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:14:59,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:15:00,004 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-19 21:15:00,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:15:00,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13337112] [2022-07-19 21:15:00,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13337112] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:15:00,005 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:15:00,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:15:00,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824039581] [2022-07-19 21:15:00,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:15:00,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:15:00,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:15:00,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:15:00,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:15:00,008 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 746 out of 818 [2022-07-19 21:15:00,009 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 731 places, 758 transitions, 1566 flow. Second operand has 3 states, 3 states have (on average 747.0) internal successors, (2241), 3 states have internal predecessors, (2241), 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) [2022-07-19 21:15:00,009 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:15:00,009 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 746 of 818 [2022-07-19 21:15:00,010 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:15:00,307 INFO L129 PetriNetUnfolder]: 55/1103 cut-off events. [2022-07-19 21:15:00,307 INFO L130 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2022-07-19 21:15:00,338 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1161 conditions, 1103 events. 55/1103 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 4598 event pairs, 0 based on Foata normal form. 0/997 useless extension candidates. Maximal degree in co-relation 1076. Up to 16 conditions per place. [2022-07-19 21:15:00,348 INFO L132 encePairwiseOnDemand]: 815/818 looper letters, 13 selfloop transitions, 2 changer transitions 0/762 dead transitions. [2022-07-19 21:15:00,348 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 733 places, 762 transitions, 1604 flow [2022-07-19 21:15:00,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:15:00,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:15:00,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2254 transitions. [2022-07-19 21:15:00,353 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9185004074979625 [2022-07-19 21:15:00,353 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2254 transitions. [2022-07-19 21:15:00,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2254 transitions. [2022-07-19 21:15:00,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:15:00,355 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2254 transitions. [2022-07-19 21:15:00,358 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 751.3333333333334) internal successors, (2254), 3 states have internal predecessors, (2254), 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) [2022-07-19 21:15:00,361 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 818.0) internal successors, (3272), 4 states have internal predecessors, (3272), 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) [2022-07-19 21:15:00,362 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 818.0) internal successors, (3272), 4 states have internal predecessors, (3272), 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) [2022-07-19 21:15:00,362 INFO L186 Difference]: Start difference. First operand has 731 places, 758 transitions, 1566 flow. Second operand 3 states and 2254 transitions. [2022-07-19 21:15:00,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 733 places, 762 transitions, 1604 flow [2022-07-19 21:15:00,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 731 places, 762 transitions, 1601 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-19 21:15:00,375 INFO L242 Difference]: Finished difference. Result has 732 places, 759 transitions, 1575 flow [2022-07-19 21:15:00,376 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=818, PETRI_DIFFERENCE_MINUEND_FLOW=1563, PETRI_DIFFERENCE_MINUEND_PLACES=729, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=758, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=756, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1575, PETRI_PLACES=732, PETRI_TRANSITIONS=759} [2022-07-19 21:15:00,377 INFO L279 CegarLoopForPetriNet]: 722 programPoint places, 10 predicate places. [2022-07-19 21:15:00,377 INFO L495 AbstractCegarLoop]: Abstraction has has 732 places, 759 transitions, 1575 flow [2022-07-19 21:15:00,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 747.0) internal successors, (2241), 3 states have internal predecessors, (2241), 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) [2022-07-19 21:15:00,378 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:15:00,378 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] [2022-07-19 21:15:00,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 21:15:00,379 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting worker_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 41 more)] === [2022-07-19 21:15:00,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:15:00,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1914924077, now seen corresponding path program 1 times [2022-07-19 21:15:00,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:15:00,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259832352] [2022-07-19 21:15:00,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:15:00,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:15:00,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:15:01,094 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-19 21:15:01,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:15:01,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259832352] [2022-07-19 21:15:01,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259832352] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:15:01,095 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:15:01,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-07-19 21:15:01,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475258080] [2022-07-19 21:15:01,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:15:01,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-19 21:15:01,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:15:01,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-19 21:15:01,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2022-07-19 21:15:01,103 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 566 out of 818 [2022-07-19 21:15:01,110 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 732 places, 759 transitions, 1575 flow. Second operand has 17 states, 17 states have (on average 568.9411764705883) internal successors, (9672), 17 states have internal predecessors, (9672), 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) [2022-07-19 21:15:01,110 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:15:01,110 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 566 of 818 [2022-07-19 21:15:01,110 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand