./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 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-divine/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-?-3598765 [2022-07-21 08:47:35,430 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 08:47:35,431 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 08:47:35,450 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 08:47:35,451 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 08:47:35,451 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 08:47:35,452 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 08:47:35,454 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 08:47:35,455 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 08:47:35,456 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 08:47:35,461 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 08:47:35,462 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 08:47:35,462 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 08:47:35,463 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 08:47:35,463 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 08:47:35,464 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 08:47:35,465 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 08:47:35,465 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 08:47:35,467 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 08:47:35,468 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 08:47:35,469 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 08:47:35,469 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 08:47:35,470 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 08:47:35,471 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 08:47:35,472 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 08:47:35,473 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 08:47:35,474 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 08:47:35,474 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 08:47:35,475 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 08:47:35,475 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 08:47:35,476 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 08:47:35,476 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 08:47:35,476 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 08:47:35,477 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 08:47:35,477 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 08:47:35,478 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 08:47:35,478 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 08:47:35,479 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 08:47:35,479 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 08:47:35,479 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 08:47:35,480 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 08:47:35,481 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 08:47:35,481 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 08:47:35,501 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 08:47:35,501 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 08:47:35,502 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 08:47:35,502 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 08:47:35,503 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 08:47:35,503 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 08:47:35,503 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 08:47:35,503 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 08:47:35,503 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 08:47:35,504 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 08:47:35,504 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 08:47:35,504 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 08:47:35,504 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 08:47:35,504 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 08:47:35,505 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 08:47:35,505 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 08:47:35,505 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 08:47:35,505 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 08:47:35,505 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 08:47:35,505 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 08:47:35,506 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 08:47:35,506 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 08:47:35,506 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 08:47:35,506 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 08:47:35,506 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:47:35,506 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 08:47:35,507 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 08:47:35,507 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 08:47:35,507 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 08:47:35,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 08:47:35,507 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 08:47:35,507 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 08:47:35,508 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 08:47:35,508 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 116240ce9d1e33454ba4eae840c2d7b67606f3cd4ffa1a06798f06dcbc1241fc [2022-07-21 08:47:35,783 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 08:47:35,797 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 08:47:35,799 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 08:47:35,800 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 08:47:35,801 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 08:47:35,802 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-divine/barrier_3t.i [2022-07-21 08:47:35,849 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8203ef857/d70f47787da343be99f31ae8d7361590/FLAG9ac7aa8c7 [2022-07-21 08:47:36,305 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 08:47:36,305 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/barrier_3t.i [2022-07-21 08:47:36,316 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8203ef857/d70f47787da343be99f31ae8d7361590/FLAG9ac7aa8c7 [2022-07-21 08:47:36,663 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8203ef857/d70f47787da343be99f31ae8d7361590 [2022-07-21 08:47:36,665 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 08:47:36,666 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 08:47:36,680 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 08:47:36,680 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 08:47:36,682 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 08:47:36,683 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:47:36" (1/1) ... [2022-07-21 08:47:36,684 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fe356c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:47:36, skipping insertion in model container [2022-07-21 08:47:36,684 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:47:36" (1/1) ... [2022-07-21 08:47:36,689 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 08:47:36,730 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 08:47:36,844 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-07-21 08:47:36,997 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] [2022-07-21 08:47:37,025 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] [2022-07-21 08:47:37,026 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] [2022-07-21 08:47:37,029 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] [2022-07-21 08:47:37,030 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] [2022-07-21 08:47:37,031 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] [2022-07-21 08:47:37,034 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] [2022-07-21 08:47:37,035 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] [2022-07-21 08:47:37,038 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] [2022-07-21 08:47:37,039 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] [2022-07-21 08:47:37,041 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] [2022-07-21 08:47:37,050 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] [2022-07-21 08:47:37,051 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] [2022-07-21 08:47:37,052 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:47:37,061 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 08:47:37,073 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-07-21 08:47:37,096 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] [2022-07-21 08:47:37,100 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] [2022-07-21 08:47:37,116 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] [2022-07-21 08:47:37,117 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] [2022-07-21 08:47:37,117 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] [2022-07-21 08:47:37,118 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] [2022-07-21 08:47:37,119 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] [2022-07-21 08:47:37,119 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] [2022-07-21 08:47:37,120 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] [2022-07-21 08:47:37,120 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] [2022-07-21 08:47:37,121 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] [2022-07-21 08:47:37,125 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] [2022-07-21 08:47:37,125 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] [2022-07-21 08:47:37,126 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:47:37,180 INFO L208 MainTranslator]: Completed translation [2022-07-21 08:47:37,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:47:37 WrapperNode [2022-07-21 08:47:37,181 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 08:47:37,182 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 08:47:37,182 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 08:47:37,182 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 08:47:37,186 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:47:37" (1/1) ... [2022-07-21 08:47:37,213 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:47:37" (1/1) ... [2022-07-21 08:47:37,258 INFO L137 Inliner]: procedures = 174, calls = 83, calls flagged for inlining = 6, calls inlined = 8, statements flattened = 526 [2022-07-21 08:47:37,260 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 08:47:37,264 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 08:47:37,264 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 08:47:37,264 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 08:47:37,270 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:47:37" (1/1) ... [2022-07-21 08:47:37,270 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:47:37" (1/1) ... [2022-07-21 08:47:37,277 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:47:37" (1/1) ... [2022-07-21 08:47:37,285 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:47:37" (1/1) ... [2022-07-21 08:47:37,296 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:47:37" (1/1) ... [2022-07-21 08:47:37,315 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:47:37" (1/1) ... [2022-07-21 08:47:37,318 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:47:37" (1/1) ... [2022-07-21 08:47:37,325 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 08:47:37,334 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 08:47:37,334 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 08:47:37,335 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 08:47:37,335 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:47:37" (1/1) ... [2022-07-21 08:47:37,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:47:37,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:47:37,367 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 08:47:37,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 08:47:37,419 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 08:47:37,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 08:47:37,420 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-07-21 08:47:37,420 INFO L130 BoogieDeclarations]: Found specification of procedure worker_fn [2022-07-21 08:47:37,420 INFO L138 BoogieDeclarations]: Found implementation of procedure worker_fn [2022-07-21 08:47:37,420 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 08:47:37,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-21 08:47:37,420 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 08:47:37,420 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-21 08:47:37,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 08:47:37,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 08:47:37,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 08:47:37,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 08:47:37,422 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-21 08:47:37,545 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 08:47:37,546 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 08:47:38,053 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 08:47:38,066 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 08:47:38,066 INFO L299 CfgBuilder]: Removed 20 assume(true) statements. [2022-07-21 08:47:38,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:47:38 BoogieIcfgContainer [2022-07-21 08:47:38,069 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 08:47:38,072 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 08:47:38,072 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 08:47:38,074 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 08:47:38,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 08:47:36" (1/3) ... [2022-07-21 08:47:38,075 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f400bee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:47:38, skipping insertion in model container [2022-07-21 08:47:38,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:47:37" (2/3) ... [2022-07-21 08:47:38,075 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f400bee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:47:38, skipping insertion in model container [2022-07-21 08:47:38,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:47:38" (3/3) ... [2022-07-21 08:47:38,077 INFO L111 eAbstractionObserver]: Analyzing ICFG barrier_3t.i [2022-07-21 08:47:38,080 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-21 08:47:38,087 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 08:47:38,088 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 23 error locations. [2022-07-21 08:47:38,088 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-21 08:47:38,186 INFO L135 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-07-21 08:47:38,236 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 519 places, 586 transitions, 1180 flow [2022-07-21 08:47:38,456 INFO L129 PetriNetUnfolder]: 106/863 cut-off events. [2022-07-21 08:47:38,456 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-07-21 08:47:38,471 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. [2022-07-21 08:47:38,471 INFO L82 GeneralOperation]: Start removeDead. Operand has 519 places, 586 transitions, 1180 flow [2022-07-21 08:47:38,484 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 519 places, 586 transitions, 1180 flow [2022-07-21 08:47:38,490 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 08:47:38,495 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@197001a7, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7e178859 [2022-07-21 08:47:38,495 INFO L358 AbstractCegarLoop]: Starting to check reachability of 34 error locations. [2022-07-21 08:47:38,500 INFO L129 PetriNetUnfolder]: 3/59 cut-off events. [2022-07-21 08:47:38,500 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-21 08:47:38,501 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:47:38,501 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:47:38,502 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)] === [2022-07-21 08:47:38,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:47:38,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1596734137, now seen corresponding path program 1 times [2022-07-21 08:47:38,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:47:38,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972899660] [2022-07-21 08:47:38,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:47:38,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:47:38,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:47:38,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:47:38,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:47:38,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972899660] [2022-07-21 08:47:38,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972899660] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:47:38,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:47:38,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:47:38,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521686287] [2022-07-21 08:47:38,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:47:38,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:47:38,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:47:38,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:47:38,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:47:38,764 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 532 out of 586 [2022-07-21 08:47:38,769 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) [2022-07-21 08:47:38,770 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:47:38,770 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 532 of 586 [2022-07-21 08:47:38,771 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:47:38,925 INFO L129 PetriNetUnfolder]: 40/803 cut-off events. [2022-07-21 08:47:38,925 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-07-21 08:47:38,931 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. [2022-07-21 08:47:38,935 INFO L132 encePairwiseOnDemand]: 540/586 looper letters, 15 selfloop transitions, 2 changer transitions 0/549 dead transitions. [2022-07-21 08:47:38,936 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 521 places, 549 transitions, 1140 flow [2022-07-21 08:47:38,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:47:38,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:47:38,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1658 transitions. [2022-07-21 08:47:38,955 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9431171786120591 [2022-07-21 08:47:38,955 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1658 transitions. [2022-07-21 08:47:38,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1658 transitions. [2022-07-21 08:47:38,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:47:38,961 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1658 transitions. [2022-07-21 08:47:38,966 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) [2022-07-21 08:47:38,974 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) [2022-07-21 08:47:38,976 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) [2022-07-21 08:47:38,978 INFO L186 Difference]: Start difference. First operand has 519 places, 586 transitions, 1180 flow. Second operand 3 states and 1658 transitions. [2022-07-21 08:47:38,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 521 places, 549 transitions, 1140 flow [2022-07-21 08:47:38,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 521 places, 549 transitions, 1140 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-21 08:47:38,997 INFO L242 Difference]: Finished difference. Result has 522 places, 544 transitions, 1106 flow [2022-07-21 08:47:38,999 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} [2022-07-21 08:47:39,002 INFO L279 CegarLoopForPetriNet]: 519 programPoint places, 3 predicate places. [2022-07-21 08:47:39,003 INFO L495 AbstractCegarLoop]: Abstraction has has 522 places, 544 transitions, 1106 flow [2022-07-21 08:47:39,004 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) [2022-07-21 08:47:39,004 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:47:39,005 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:47:39,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 08:47:39,009 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)] === [2022-07-21 08:47:39,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:47:39,010 INFO L85 PathProgramCache]: Analyzing trace with hash -95295206, now seen corresponding path program 1 times [2022-07-21 08:47:39,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:47:39,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004350178] [2022-07-21 08:47:39,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:47:39,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:47:39,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:47:39,122 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:47:39,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:47:39,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004350178] [2022-07-21 08:47:39,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004350178] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 08:47:39,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782610154] [2022-07-21 08:47:39,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:47:39,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:47:39,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:47:39,125 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 08:47:39,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 08:47:39,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:47:39,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 08:47:39,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 08:47:39,315 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:47:39,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 08:47:39,350 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:47:39,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782610154] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 08:47:39,351 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 08:47:39,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2022-07-21 08:47:39,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041475822] [2022-07-21 08:47:39,352 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 08:47:39,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:47:39,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:47:39,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:47:39,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:47:39,357 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 532 out of 586 [2022-07-21 08:47:39,361 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) [2022-07-21 08:47:39,361 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:47:39,361 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 532 of 586 [2022-07-21 08:47:39,361 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:47:39,529 INFO L129 PetriNetUnfolder]: 40/812 cut-off events. [2022-07-21 08:47:39,530 INFO L130 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-07-21 08:47:39,535 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. [2022-07-21 08:47:39,539 INFO L132 encePairwiseOnDemand]: 582/586 looper letters, 19 selfloop transitions, 5 changer transitions 0/556 dead transitions. [2022-07-21 08:47:39,539 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 526 places, 556 transitions, 1180 flow [2022-07-21 08:47:39,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 08:47:39,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-21 08:47:39,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2686 transitions. [2022-07-21 08:47:39,543 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9167235494880546 [2022-07-21 08:47:39,544 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2686 transitions. [2022-07-21 08:47:39,544 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2686 transitions. [2022-07-21 08:47:39,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:47:39,545 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2686 transitions. [2022-07-21 08:47:39,549 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) [2022-07-21 08:47:39,553 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) [2022-07-21 08:47:39,554 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) [2022-07-21 08:47:39,555 INFO L186 Difference]: Start difference. First operand has 522 places, 544 transitions, 1106 flow. Second operand 5 states and 2686 transitions. [2022-07-21 08:47:39,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 526 places, 556 transitions, 1180 flow [2022-07-21 08:47:39,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 525 places, 556 transitions, 1178 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-21 08:47:39,562 INFO L242 Difference]: Finished difference. Result has 528 places, 546 transitions, 1134 flow [2022-07-21 08:47:39,563 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} [2022-07-21 08:47:39,564 INFO L279 CegarLoopForPetriNet]: 519 programPoint places, 9 predicate places. [2022-07-21 08:47:39,564 INFO L495 AbstractCegarLoop]: Abstraction has has 528 places, 546 transitions, 1134 flow [2022-07-21 08:47:39,565 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) [2022-07-21 08:47:39,565 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:47:39,566 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:47:39,603 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-21 08:47:39,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:47:39,804 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)] === [2022-07-21 08:47:39,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:47:39,804 INFO L85 PathProgramCache]: Analyzing trace with hash -215230342, now seen corresponding path program 2 times [2022-07-21 08:47:39,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:47:39,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743649751] [2022-07-21 08:47:39,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:47:39,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:47:39,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:47:39,893 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-21 08:47:39,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:47:39,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743649751] [2022-07-21 08:47:39,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743649751] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:47:39,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:47:39,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 08:47:39,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344592111] [2022-07-21 08:47:39,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:47:39,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 08:47:39,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:47:39,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 08:47:39,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 08:47:39,897 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 535 out of 586 [2022-07-21 08:47:39,899 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) [2022-07-21 08:47:39,899 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:47:39,899 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 535 of 586 [2022-07-21 08:47:39,899 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:47:40,160 INFO L129 PetriNetUnfolder]: 40/810 cut-off events. [2022-07-21 08:47:40,161 INFO L130 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-07-21 08:47:40,184 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. [2022-07-21 08:47:40,203 INFO L132 encePairwiseOnDemand]: 583/586 looper letters, 5 selfloop transitions, 2 changer transitions 0/544 dead transitions. [2022-07-21 08:47:40,203 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 529 places, 544 transitions, 1144 flow [2022-07-21 08:47:40,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 08:47:40,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-21 08:47:40,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2148 transitions. [2022-07-21 08:47:40,207 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9163822525597269 [2022-07-21 08:47:40,207 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2148 transitions. [2022-07-21 08:47:40,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2148 transitions. [2022-07-21 08:47:40,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:47:40,208 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2148 transitions. [2022-07-21 08:47:40,212 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) [2022-07-21 08:47:40,216 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) [2022-07-21 08:47:40,217 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) [2022-07-21 08:47:40,217 INFO L186 Difference]: Start difference. First operand has 528 places, 546 transitions, 1134 flow. Second operand 4 states and 2148 transitions. [2022-07-21 08:47:40,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 529 places, 544 transitions, 1144 flow [2022-07-21 08:47:40,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 528 places, 544 transitions, 1138 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-07-21 08:47:40,240 INFO L242 Difference]: Finished difference. Result has 528 places, 544 transitions, 1128 flow [2022-07-21 08:47:40,240 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} [2022-07-21 08:47:40,242 INFO L279 CegarLoopForPetriNet]: 519 programPoint places, 9 predicate places. [2022-07-21 08:47:40,242 INFO L495 AbstractCegarLoop]: Abstraction has has 528 places, 544 transitions, 1128 flow [2022-07-21 08:47:40,243 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) [2022-07-21 08:47:40,243 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:47:40,259 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] [2022-07-21 08:47:40,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 08:47:40,262 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)] === [2022-07-21 08:47:40,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:47:40,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1540121218, now seen corresponding path program 1 times [2022-07-21 08:47:40,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:47:40,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220165594] [2022-07-21 08:47:40,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:47:40,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:47:40,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 08:47:40,374 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-21 08:47:40,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 08:47:40,507 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-21 08:47:40,507 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-21 08:47:40,508 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (33 of 34 remaining) [2022-07-21 08:47:40,512 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (32 of 34 remaining) [2022-07-21 08:47:40,513 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (31 of 34 remaining) [2022-07-21 08:47:40,513 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (30 of 34 remaining) [2022-07-21 08:47:40,513 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (29 of 34 remaining) [2022-07-21 08:47:40,513 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (28 of 34 remaining) [2022-07-21 08:47:40,513 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (27 of 34 remaining) [2022-07-21 08:47:40,513 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION (26 of 34 remaining) [2022-07-21 08:47:40,513 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION (25 of 34 remaining) [2022-07-21 08:47:40,513 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION (24 of 34 remaining) [2022-07-21 08:47:40,513 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION (23 of 34 remaining) [2022-07-21 08:47:40,513 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (22 of 34 remaining) [2022-07-21 08:47:40,513 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION (21 of 34 remaining) [2022-07-21 08:47:40,514 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION (20 of 34 remaining) [2022-07-21 08:47:40,514 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (19 of 34 remaining) [2022-07-21 08:47:40,514 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr1ASSERT_VIOLATIONERROR_FUNCTION (18 of 34 remaining) [2022-07-21 08:47:40,514 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr3ASSERT_VIOLATIONERROR_FUNCTION (17 of 34 remaining) [2022-07-21 08:47:40,514 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr2ASSERT_VIOLATIONERROR_FUNCTION (16 of 34 remaining) [2022-07-21 08:47:40,515 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr4ASSERT_VIOLATIONERROR_FUNCTION (15 of 34 remaining) [2022-07-21 08:47:40,533 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr5ASSERT_VIOLATIONERROR_FUNCTION (14 of 34 remaining) [2022-07-21 08:47:40,534 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr8ASSERT_VIOLATIONERROR_FUNCTION (13 of 34 remaining) [2022-07-21 08:47:40,541 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr6ASSERT_VIOLATIONERROR_FUNCTION (12 of 34 remaining) [2022-07-21 08:47:40,542 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr9ASSERT_VIOLATIONERROR_FUNCTION (11 of 34 remaining) [2022-07-21 08:47:40,542 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr7ASSERT_VIOLATIONERROR_FUNCTION (10 of 34 remaining) [2022-07-21 08:47:40,542 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (9 of 34 remaining) [2022-07-21 08:47:40,542 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr1ASSERT_VIOLATIONERROR_FUNCTION (8 of 34 remaining) [2022-07-21 08:47:40,542 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr3ASSERT_VIOLATIONERROR_FUNCTION (7 of 34 remaining) [2022-07-21 08:47:40,542 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr2ASSERT_VIOLATIONERROR_FUNCTION (6 of 34 remaining) [2022-07-21 08:47:40,542 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr4ASSERT_VIOLATIONERROR_FUNCTION (5 of 34 remaining) [2022-07-21 08:47:40,542 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr5ASSERT_VIOLATIONERROR_FUNCTION (4 of 34 remaining) [2022-07-21 08:47:40,542 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr8ASSERT_VIOLATIONERROR_FUNCTION (3 of 34 remaining) [2022-07-21 08:47:40,542 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr6ASSERT_VIOLATIONERROR_FUNCTION (2 of 34 remaining) [2022-07-21 08:47:40,542 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr9ASSERT_VIOLATIONERROR_FUNCTION (1 of 34 remaining) [2022-07-21 08:47:40,543 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr7ASSERT_VIOLATIONERROR_FUNCTION (0 of 34 remaining) [2022-07-21 08:47:40,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 08:47:40,543 INFO L356 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2022-07-21 08:47:40,545 WARN L231 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-21 08:47:40,545 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-07-21 08:47:40,603 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-07-21 08:47:40,611 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 722 places, 818 transitions, 1654 flow [2022-07-21 08:47:40,914 INFO L129 PetriNetUnfolder]: 179/1421 cut-off events. [2022-07-21 08:47:40,914 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-07-21 08:47:40,937 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. [2022-07-21 08:47:40,937 INFO L82 GeneralOperation]: Start removeDead. Operand has 722 places, 818 transitions, 1654 flow [2022-07-21 08:47:40,958 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 722 places, 818 transitions, 1654 flow [2022-07-21 08:47:40,959 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 08:47:40,960 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@197001a7, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7e178859 [2022-07-21 08:47:40,960 INFO L358 AbstractCegarLoop]: Starting to check reachability of 44 error locations. [2022-07-21 08:47:40,964 INFO L129 PetriNetUnfolder]: 3/58 cut-off events. [2022-07-21 08:47:40,964 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-21 08:47:40,964 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:47:40,964 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:47:40,967 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)] === [2022-07-21 08:47:40,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:47:40,968 INFO L85 PathProgramCache]: Analyzing trace with hash -997182855, now seen corresponding path program 1 times [2022-07-21 08:47:40,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:47:40,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900294581] [2022-07-21 08:47:40,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:47:40,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:47:40,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:47:40,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:47:40,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:47:40,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900294581] [2022-07-21 08:47:41,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900294581] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:47:41,000 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:47:41,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:47:41,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840578514] [2022-07-21 08:47:41,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:47:41,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:47:41,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:47:41,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:47:41,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:47:41,004 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 744 out of 818 [2022-07-21 08:47:41,005 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) [2022-07-21 08:47:41,006 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:47:41,006 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 744 of 818 [2022-07-21 08:47:41,006 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:47:41,333 INFO L129 PetriNetUnfolder]: 68/1316 cut-off events. [2022-07-21 08:47:41,333 INFO L130 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2022-07-21 08:47:41,356 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. [2022-07-21 08:47:41,371 INFO L132 encePairwiseOnDemand]: 754/818 looper letters, 17 selfloop transitions, 2 changer transitions 0/763 dead transitions. [2022-07-21 08:47:41,371 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 724 places, 763 transitions, 1582 flow [2022-07-21 08:47:41,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:47:41,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:47:41,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2314 transitions. [2022-07-21 08:47:41,375 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9429502852485737 [2022-07-21 08:47:41,375 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2314 transitions. [2022-07-21 08:47:41,376 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2314 transitions. [2022-07-21 08:47:41,376 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:47:41,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2314 transitions. [2022-07-21 08:47:41,381 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) [2022-07-21 08:47:41,385 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) [2022-07-21 08:47:41,386 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) [2022-07-21 08:47:41,386 INFO L186 Difference]: Start difference. First operand has 722 places, 818 transitions, 1654 flow. Second operand 3 states and 2314 transitions. [2022-07-21 08:47:41,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 724 places, 763 transitions, 1582 flow [2022-07-21 08:47:41,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 724 places, 763 transitions, 1582 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-21 08:47:41,397 INFO L242 Difference]: Finished difference. Result has 725 places, 758 transitions, 1544 flow [2022-07-21 08:47:41,398 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} [2022-07-21 08:47:41,399 INFO L279 CegarLoopForPetriNet]: 722 programPoint places, 3 predicate places. [2022-07-21 08:47:41,400 INFO L495 AbstractCegarLoop]: Abstraction has has 725 places, 758 transitions, 1544 flow [2022-07-21 08:47:41,401 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) [2022-07-21 08:47:41,401 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:47:41,401 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:47:41,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 08:47:41,402 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)] === [2022-07-21 08:47:41,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:47:41,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1060665370, now seen corresponding path program 1 times [2022-07-21 08:47:41,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:47:41,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350429325] [2022-07-21 08:47:41,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:47:41,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:47:41,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:47:41,445 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:47:41,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:47:41,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350429325] [2022-07-21 08:47:41,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350429325] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 08:47:41,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149596572] [2022-07-21 08:47:41,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:47:41,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:47:41,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:47:41,463 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 08:47:41,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 08:47:41,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:47:41,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 08:47:41,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 08:47:41,586 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:47:41,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 08:47:41,616 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:47:41,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [149596572] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 08:47:41,616 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 08:47:41,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2022-07-21 08:47:41,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713908001] [2022-07-21 08:47:41,617 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 08:47:41,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:47:41,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:47:41,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:47:41,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:47:41,622 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 744 out of 818 [2022-07-21 08:47:41,626 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) [2022-07-21 08:47:41,639 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:47:41,639 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 744 of 818 [2022-07-21 08:47:41,639 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:47:41,946 INFO L129 PetriNetUnfolder]: 68/1325 cut-off events. [2022-07-21 08:47:41,946 INFO L130 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2022-07-21 08:47:41,966 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. [2022-07-21 08:47:41,974 INFO L132 encePairwiseOnDemand]: 814/818 looper letters, 21 selfloop transitions, 5 changer transitions 0/770 dead transitions. [2022-07-21 08:47:41,974 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 729 places, 770 transitions, 1622 flow [2022-07-21 08:47:41,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 08:47:41,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-21 08:47:41,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3748 transitions. [2022-07-21 08:47:41,980 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9163814180929095 [2022-07-21 08:47:41,980 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3748 transitions. [2022-07-21 08:47:41,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3748 transitions. [2022-07-21 08:47:41,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:47:41,981 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3748 transitions. [2022-07-21 08:47:41,987 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) [2022-07-21 08:47:41,992 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) [2022-07-21 08:47:41,994 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) [2022-07-21 08:47:41,994 INFO L186 Difference]: Start difference. First operand has 725 places, 758 transitions, 1544 flow. Second operand 5 states and 3748 transitions. [2022-07-21 08:47:41,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 729 places, 770 transitions, 1622 flow [2022-07-21 08:47:41,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 728 places, 770 transitions, 1620 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-21 08:47:42,003 INFO L242 Difference]: Finished difference. Result has 731 places, 760 transitions, 1572 flow [2022-07-21 08:47:42,005 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} [2022-07-21 08:47:42,005 INFO L279 CegarLoopForPetriNet]: 722 programPoint places, 9 predicate places. [2022-07-21 08:47:42,005 INFO L495 AbstractCegarLoop]: Abstraction has has 731 places, 760 transitions, 1572 flow [2022-07-21 08:47:42,007 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) [2022-07-21 08:47:42,007 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:47:42,007 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:47:42,040 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-21 08:47:42,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-07-21 08:47:42,225 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)] === [2022-07-21 08:47:42,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:47:42,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1485775674, now seen corresponding path program 2 times [2022-07-21 08:47:42,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:47:42,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740297073] [2022-07-21 08:47:42,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:47:42,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:47:42,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:47:42,262 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-21 08:47:42,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:47:42,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740297073] [2022-07-21 08:47:42,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740297073] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:47:42,263 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:47:42,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 08:47:42,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473268194] [2022-07-21 08:47:42,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:47:42,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 08:47:42,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:47:42,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 08:47:42,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 08:47:42,267 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 747 out of 818 [2022-07-21 08:47:42,269 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) [2022-07-21 08:47:42,269 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:47:42,269 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 747 of 818 [2022-07-21 08:47:42,269 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:47:42,547 INFO L129 PetriNetUnfolder]: 68/1323 cut-off events. [2022-07-21 08:47:42,547 INFO L130 PetriNetUnfolder]: For 31/31 co-relation queries the response was YES. [2022-07-21 08:47:42,565 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. [2022-07-21 08:47:42,571 INFO L132 encePairwiseOnDemand]: 815/818 looper letters, 7 selfloop transitions, 2 changer transitions 0/758 dead transitions. [2022-07-21 08:47:42,572 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 732 places, 758 transitions, 1586 flow [2022-07-21 08:47:42,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 08:47:42,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-21 08:47:42,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2998 transitions. [2022-07-21 08:47:42,577 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9162591687041565 [2022-07-21 08:47:42,577 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2998 transitions. [2022-07-21 08:47:42,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2998 transitions. [2022-07-21 08:47:42,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:47:42,578 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2998 transitions. [2022-07-21 08:47:42,582 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) [2022-07-21 08:47:42,585 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) [2022-07-21 08:47:42,586 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) [2022-07-21 08:47:42,586 INFO L186 Difference]: Start difference. First operand has 731 places, 760 transitions, 1572 flow. Second operand 4 states and 2998 transitions. [2022-07-21 08:47:42,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 732 places, 758 transitions, 1586 flow [2022-07-21 08:47:42,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 731 places, 758 transitions, 1580 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-07-21 08:47:42,595 INFO L242 Difference]: Finished difference. Result has 731 places, 758 transitions, 1566 flow [2022-07-21 08:47:42,596 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} [2022-07-21 08:47:42,597 INFO L279 CegarLoopForPetriNet]: 722 programPoint places, 9 predicate places. [2022-07-21 08:47:42,597 INFO L495 AbstractCegarLoop]: Abstraction has has 731 places, 758 transitions, 1566 flow [2022-07-21 08:47:42,598 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) [2022-07-21 08:47:42,598 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:47:42,598 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] [2022-07-21 08:47:42,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 08:47:42,598 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)] === [2022-07-21 08:47:42,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:47:42,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1603753880, now seen corresponding path program 1 times [2022-07-21 08:47:42,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:47:42,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192515419] [2022-07-21 08:47:42,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:47:42,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:47:42,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:47:42,636 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-21 08:47:42,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:47:42,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192515419] [2022-07-21 08:47:42,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192515419] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:47:42,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:47:42,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:47:42,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501708839] [2022-07-21 08:47:42,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:47:42,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:47:42,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:47:42,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:47:42,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:47:42,640 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 746 out of 818 [2022-07-21 08:47:42,641 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) [2022-07-21 08:47:42,641 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:47:42,641 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 746 of 818 [2022-07-21 08:47:42,641 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:47:42,910 INFO L129 PetriNetUnfolder]: 55/1103 cut-off events. [2022-07-21 08:47:42,911 INFO L130 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2022-07-21 08:47:42,932 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. [2022-07-21 08:47:42,940 INFO L132 encePairwiseOnDemand]: 815/818 looper letters, 13 selfloop transitions, 2 changer transitions 0/762 dead transitions. [2022-07-21 08:47:42,941 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 733 places, 762 transitions, 1604 flow [2022-07-21 08:47:42,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:47:42,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:47:42,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2254 transitions. [2022-07-21 08:47:42,944 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9185004074979625 [2022-07-21 08:47:42,944 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2254 transitions. [2022-07-21 08:47:42,944 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2254 transitions. [2022-07-21 08:47:42,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:47:42,945 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2254 transitions. [2022-07-21 08:47:42,948 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) [2022-07-21 08:47:42,951 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) [2022-07-21 08:47:42,951 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) [2022-07-21 08:47:42,952 INFO L186 Difference]: Start difference. First operand has 731 places, 758 transitions, 1566 flow. Second operand 3 states and 2254 transitions. [2022-07-21 08:47:42,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 733 places, 762 transitions, 1604 flow [2022-07-21 08:47:42,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 731 places, 762 transitions, 1601 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-21 08:47:43,015 INFO L242 Difference]: Finished difference. Result has 732 places, 759 transitions, 1575 flow [2022-07-21 08:47:43,016 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} [2022-07-21 08:47:43,017 INFO L279 CegarLoopForPetriNet]: 722 programPoint places, 10 predicate places. [2022-07-21 08:47:43,017 INFO L495 AbstractCegarLoop]: Abstraction has has 732 places, 759 transitions, 1575 flow [2022-07-21 08:47:43,017 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) [2022-07-21 08:47:43,017 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:47:43,017 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] [2022-07-21 08:47:43,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 08:47:43,018 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)] === [2022-07-21 08:47:43,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:47:43,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1914924077, now seen corresponding path program 1 times [2022-07-21 08:47:43,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:47:43,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763382480] [2022-07-21 08:47:43,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:47:43,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:47:43,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:47:43,587 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-21 08:47:43,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:47:43,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763382480] [2022-07-21 08:47:43,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763382480] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:47:43,587 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:47:43,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-07-21 08:47:43,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325951484] [2022-07-21 08:47:43,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:47:43,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-21 08:47:43,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:47:43,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-21 08:47:43,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2022-07-21 08:47:43,594 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 566 out of 818 [2022-07-21 08:47:43,599 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) [2022-07-21 08:47:43,599 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:47:43,599 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 566 of 818 [2022-07-21 08:47:43,599 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand