./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-lit/qw2004-2b.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-lit/qw2004-2b.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 f17f6182d2330561fe6717b6a061d0dded698483f9e32b37a3b36e1144855a29 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 21:12:31,089 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 21:12:31,090 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 21:12:31,111 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 21:12:31,112 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 21:12:31,112 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 21:12:31,113 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 21:12:31,115 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 21:12:31,116 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 21:12:31,117 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 21:12:31,117 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 21:12:31,118 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 21:12:31,119 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 21:12:31,119 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 21:12:31,120 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 21:12:31,121 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 21:12:31,122 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 21:12:31,122 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 21:12:31,123 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 21:12:31,125 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 21:12:31,126 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 21:12:31,126 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 21:12:31,127 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 21:12:31,128 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 21:12:31,129 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 21:12:31,131 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 21:12:31,131 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 21:12:31,131 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 21:12:31,132 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 21:12:31,132 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 21:12:31,133 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 21:12:31,133 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 21:12:31,134 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 21:12:31,134 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 21:12:31,135 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 21:12:31,135 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 21:12:31,136 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 21:12:31,136 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 21:12:31,136 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 21:12:31,137 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 21:12:31,137 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 21:12:31,143 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 21:12:31,144 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 21:12:31,157 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 21:12:31,158 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 21:12:31,158 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 21:12:31,158 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 21:12:31,158 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 21:12:31,159 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 21:12:31,159 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 21:12:31,159 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 21:12:31,159 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 21:12:31,159 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 21:12:31,160 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 21:12:31,160 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 21:12:31,160 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 21:12:31,160 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 21:12:31,160 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 21:12:31,160 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 21:12:31,160 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 21:12:31,161 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 21:12:31,161 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 21:12:31,161 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 21:12:31,161 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 21:12:31,161 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 21:12:31,161 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 21:12:31,162 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 21:12:31,162 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:12:31,162 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 21:12:31,162 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 21:12:31,162 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 21:12:31,162 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 21:12:31,162 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 21:12:31,163 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 21:12:31,163 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 21:12:31,163 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 21:12:31,163 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f17f6182d2330561fe6717b6a061d0dded698483f9e32b37a3b36e1144855a29 [2022-07-19 21:12:31,316 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 21:12:31,343 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 21:12:31,345 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 21:12:31,345 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 21:12:31,346 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 21:12:31,347 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-lit/qw2004-2b.i [2022-07-19 21:12:31,400 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eda5e8f74/04899213f5e94681a86d1141e0dc13d2/FLAGc6bb368c7 [2022-07-19 21:12:31,817 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 21:12:31,817 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-lit/qw2004-2b.i [2022-07-19 21:12:31,833 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eda5e8f74/04899213f5e94681a86d1141e0dc13d2/FLAGc6bb368c7 [2022-07-19 21:12:31,848 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eda5e8f74/04899213f5e94681a86d1141e0dc13d2 [2022-07-19 21:12:31,850 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 21:12:31,852 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 21:12:31,854 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 21:12:31,854 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 21:12:31,856 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 21:12:31,857 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:12:31" (1/1) ... [2022-07-19 21:12:31,858 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bbfd1c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:12:31, skipping insertion in model container [2022-07-19 21:12:31,858 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:12:31" (1/1) ... [2022-07-19 21:12:31,863 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 21:12:31,894 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 21:12:32,146 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-lit/qw2004-2b.i[30003,30016] [2022-07-19 21:12:32,166 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:12:32,172 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 21:12:32,204 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-lit/qw2004-2b.i[30003,30016] [2022-07-19 21:12:32,221 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:12:32,250 INFO L208 MainTranslator]: Completed translation [2022-07-19 21:12:32,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:12:32 WrapperNode [2022-07-19 21:12:32,251 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 21:12:32,251 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 21:12:32,252 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 21:12:32,252 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 21:12:32,257 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:12:32" (1/1) ... [2022-07-19 21:12:32,280 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:12:32" (1/1) ... [2022-07-19 21:12:32,301 INFO L137 Inliner]: procedures = 175, calls = 36, calls flagged for inlining = 9, calls inlined = 10, statements flattened = 117 [2022-07-19 21:12:32,302 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 21:12:32,303 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 21:12:32,303 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 21:12:32,303 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 21:12:32,308 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:12:32" (1/1) ... [2022-07-19 21:12:32,309 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:12:32" (1/1) ... [2022-07-19 21:12:32,319 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:12:32" (1/1) ... [2022-07-19 21:12:32,320 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:12:32" (1/1) ... [2022-07-19 21:12:32,329 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:12:32" (1/1) ... [2022-07-19 21:12:32,333 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:12:32" (1/1) ... [2022-07-19 21:12:32,334 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:12:32" (1/1) ... [2022-07-19 21:12:32,337 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 21:12:32,341 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 21:12:32,342 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 21:12:32,342 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 21:12:32,343 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:12:32" (1/1) ... [2022-07-19 21:12:32,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:12:32,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:12:32,381 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 21:12:32,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 21:12:32,451 INFO L130 BoogieDeclarations]: Found specification of procedure BCSP_PnpStop [2022-07-19 21:12:32,451 INFO L138 BoogieDeclarations]: Found implementation of procedure BCSP_PnpStop [2022-07-19 21:12:32,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 21:12:32,451 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-19 21:12:32,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 21:12:32,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 21:12:32,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 21:12:32,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 21:12:32,452 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-19 21:12:32,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 21:12:32,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 21:12:32,453 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-19 21:12:32,521 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 21:12:32,522 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 21:12:32,645 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 21:12:32,664 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 21:12:32,664 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 21:12:32,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:12:32 BoogieIcfgContainer [2022-07-19 21:12:32,666 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 21:12:32,667 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 21:12:32,667 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 21:12:32,670 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 21:12:32,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:12:31" (1/3) ... [2022-07-19 21:12:32,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32e2224c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:12:32, skipping insertion in model container [2022-07-19 21:12:32,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:12:32" (2/3) ... [2022-07-19 21:12:32,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32e2224c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:12:32, skipping insertion in model container [2022-07-19 21:12:32,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:12:32" (3/3) ... [2022-07-19 21:12:32,672 INFO L111 eAbstractionObserver]: Analyzing ICFG qw2004-2b.i [2022-07-19 21:12:32,676 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-19 21:12:32,696 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 21:12:32,697 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 21:12:32,697 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-19 21:12:32,759 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-19 21:12:32,783 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 118 places, 120 transitions, 245 flow [2022-07-19 21:12:32,824 INFO L129 PetriNetUnfolder]: 6/119 cut-off events. [2022-07-19 21:12:32,824 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-19 21:12:32,829 INFO L84 FinitePrefix]: Finished finitePrefix Result has 123 conditions, 119 events. 6/119 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 122 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 94. Up to 2 conditions per place. [2022-07-19 21:12:32,829 INFO L82 GeneralOperation]: Start removeDead. Operand has 118 places, 120 transitions, 245 flow [2022-07-19 21:12:32,833 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 117 places, 119 transitions, 241 flow [2022-07-19 21:12:32,842 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:12:32,847 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@5010c5f4, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1b0d2fbb [2022-07-19 21:12:32,847 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-19 21:12:32,862 INFO L129 PetriNetUnfolder]: 5/98 cut-off events. [2022-07-19 21:12:32,862 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-19 21:12:32,863 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:12:32,863 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] [2022-07-19 21:12:32,864 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:12:32,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:12:32,867 INFO L85 PathProgramCache]: Analyzing trace with hash 182298429, now seen corresponding path program 1 times [2022-07-19 21:12:32,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:12:32,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502449582] [2022-07-19 21:12:32,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:12:32,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:12:32,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:12:33,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:12:33,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:12:33,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502449582] [2022-07-19 21:12:33,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502449582] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:12:33,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:12:33,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 21:12:33,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377566144] [2022-07-19 21:12:33,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:12:33,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 21:12:33,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:12:33,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 21:12:33,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 21:12:33,119 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 120 [2022-07-19 21:12:33,121 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 119 transitions, 241 flow. Second operand has 4 states, 4 states have (on average 108.5) internal successors, (434), 4 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:33,121 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:12:33,121 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 120 [2022-07-19 21:12:33,122 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:12:33,197 INFO L129 PetriNetUnfolder]: 24/369 cut-off events. [2022-07-19 21:12:33,197 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-07-19 21:12:33,200 INFO L84 FinitePrefix]: Finished finitePrefix Result has 408 conditions, 369 events. 24/369 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1617 event pairs, 3 based on Foata normal form. 11/354 useless extension candidates. Maximal degree in co-relation 375. Up to 16 conditions per place. [2022-07-19 21:12:33,202 INFO L132 encePairwiseOnDemand]: 113/120 looper letters, 13 selfloop transitions, 5 changer transitions 0/124 dead transitions. [2022-07-19 21:12:33,202 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 124 transitions, 287 flow [2022-07-19 21:12:33,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:12:33,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-19 21:12:33,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 560 transitions. [2022-07-19 21:12:33,214 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9333333333333333 [2022-07-19 21:12:33,214 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 560 transitions. [2022-07-19 21:12:33,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 560 transitions. [2022-07-19 21:12:33,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:12:33,218 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 560 transitions. [2022-07-19 21:12:33,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 112.0) internal successors, (560), 5 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:33,226 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:33,226 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:33,228 INFO L186 Difference]: Start difference. First operand has 117 places, 119 transitions, 241 flow. Second operand 5 states and 560 transitions. [2022-07-19 21:12:33,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 124 transitions, 287 flow [2022-07-19 21:12:33,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 124 transitions, 286 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-19 21:12:33,239 INFO L242 Difference]: Finished difference. Result has 123 places, 119 transitions, 268 flow [2022-07-19 21:12:33,241 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=268, PETRI_PLACES=123, PETRI_TRANSITIONS=119} [2022-07-19 21:12:33,244 INFO L279 CegarLoopForPetriNet]: 117 programPoint places, 6 predicate places. [2022-07-19 21:12:33,244 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 119 transitions, 268 flow [2022-07-19 21:12:33,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 108.5) internal successors, (434), 4 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:33,245 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:12:33,246 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] [2022-07-19 21:12:33,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 21:12:33,246 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:12:33,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:12:33,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1582747234, now seen corresponding path program 1 times [2022-07-19 21:12:33,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:12:33,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065616308] [2022-07-19 21:12:33,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:12:33,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:12:33,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:12:33,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:12:33,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:12:33,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065616308] [2022-07-19 21:12:33,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065616308] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:12:33,346 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:12:33,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 21:12:33,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280665712] [2022-07-19 21:12:33,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:12:33,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 21:12:33,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:12:33,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 21:12:33,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 21:12:33,349 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 120 [2022-07-19 21:12:33,350 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 119 transitions, 268 flow. Second operand has 6 states, 6 states have (on average 105.5) internal successors, (633), 6 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:33,350 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:12:33,350 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 120 [2022-07-19 21:12:33,350 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:12:33,461 INFO L129 PetriNetUnfolder]: 53/616 cut-off events. [2022-07-19 21:12:33,462 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-07-19 21:12:33,465 INFO L84 FinitePrefix]: Finished finitePrefix Result has 755 conditions, 616 events. 53/616 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3624 event pairs, 4 based on Foata normal form. 0/588 useless extension candidates. Maximal degree in co-relation 717. Up to 24 conditions per place. [2022-07-19 21:12:33,467 INFO L132 encePairwiseOnDemand]: 113/120 looper letters, 21 selfloop transitions, 10 changer transitions 2/139 dead transitions. [2022-07-19 21:12:33,467 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 139 transitions, 374 flow [2022-07-19 21:12:33,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 21:12:33,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-19 21:12:33,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1075 transitions. [2022-07-19 21:12:33,470 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8958333333333334 [2022-07-19 21:12:33,470 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1075 transitions. [2022-07-19 21:12:33,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1075 transitions. [2022-07-19 21:12:33,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:12:33,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1075 transitions. [2022-07-19 21:12:33,473 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 107.5) internal successors, (1075), 10 states have internal predecessors, (1075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:33,475 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 120.0) internal successors, (1320), 11 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:33,475 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 120.0) internal successors, (1320), 11 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:33,475 INFO L186 Difference]: Start difference. First operand has 123 places, 119 transitions, 268 flow. Second operand 10 states and 1075 transitions. [2022-07-19 21:12:33,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 139 transitions, 374 flow [2022-07-19 21:12:33,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 139 transitions, 374 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-19 21:12:33,479 INFO L242 Difference]: Finished difference. Result has 136 places, 127 transitions, 325 flow [2022-07-19 21:12:33,479 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=325, PETRI_PLACES=136, PETRI_TRANSITIONS=127} [2022-07-19 21:12:33,480 INFO L279 CegarLoopForPetriNet]: 117 programPoint places, 19 predicate places. [2022-07-19 21:12:33,480 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 127 transitions, 325 flow [2022-07-19 21:12:33,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 105.5) internal successors, (633), 6 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:33,481 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:12:33,481 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:12:33,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 21:12:33,481 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:12:33,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:12:33,482 INFO L85 PathProgramCache]: Analyzing trace with hash 791898828, now seen corresponding path program 1 times [2022-07-19 21:12:33,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:12:33,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816197815] [2022-07-19 21:12:33,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:12:33,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:12:33,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:12:33,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:12:33,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:12:33,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816197815] [2022-07-19 21:12:33,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816197815] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:12:33,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:12:33,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 21:12:33,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153489228] [2022-07-19 21:12:33,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:12:33,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 21:12:33,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:12:33,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 21:12:33,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 21:12:33,545 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 120 [2022-07-19 21:12:33,546 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 127 transitions, 325 flow. Second operand has 6 states, 6 states have (on average 105.5) internal successors, (633), 6 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:33,546 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:12:33,546 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 120 [2022-07-19 21:12:33,546 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:12:33,703 INFO L129 PetriNetUnfolder]: 148/1279 cut-off events. [2022-07-19 21:12:33,703 INFO L130 PetriNetUnfolder]: For 27/28 co-relation queries the response was YES. [2022-07-19 21:12:33,707 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1650 conditions, 1279 events. 148/1279 cut-off events. For 27/28 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 10658 event pairs, 30 based on Foata normal form. 0/1164 useless extension candidates. Maximal degree in co-relation 1606. Up to 141 conditions per place. [2022-07-19 21:12:33,708 INFO L132 encePairwiseOnDemand]: 112/120 looper letters, 8 selfloop transitions, 2 changer transitions 61/148 dead transitions. [2022-07-19 21:12:33,709 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 148 transitions, 435 flow [2022-07-19 21:12:33,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 21:12:33,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-19 21:12:33,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1076 transitions. [2022-07-19 21:12:33,711 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8966666666666666 [2022-07-19 21:12:33,711 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1076 transitions. [2022-07-19 21:12:33,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1076 transitions. [2022-07-19 21:12:33,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:12:33,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1076 transitions. [2022-07-19 21:12:33,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 107.6) internal successors, (1076), 10 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:33,716 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 120.0) internal successors, (1320), 11 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:33,717 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 120.0) internal successors, (1320), 11 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:33,717 INFO L186 Difference]: Start difference. First operand has 136 places, 127 transitions, 325 flow. Second operand 10 states and 1076 transitions. [2022-07-19 21:12:33,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 148 transitions, 435 flow [2022-07-19 21:12:33,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 148 transitions, 435 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-19 21:12:33,724 INFO L242 Difference]: Finished difference. Result has 151 places, 87 transitions, 242 flow [2022-07-19 21:12:33,725 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=325, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=242, PETRI_PLACES=151, PETRI_TRANSITIONS=87} [2022-07-19 21:12:33,726 INFO L279 CegarLoopForPetriNet]: 117 programPoint places, 34 predicate places. [2022-07-19 21:12:33,727 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 87 transitions, 242 flow [2022-07-19 21:12:33,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 105.5) internal successors, (633), 6 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:33,727 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:12:33,727 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:12:33,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 21:12:33,728 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:12:33,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:12:33,728 INFO L85 PathProgramCache]: Analyzing trace with hash 2023260719, now seen corresponding path program 1 times [2022-07-19 21:12:33,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:12:33,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624638304] [2022-07-19 21:12:33,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:12:33,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:12:33,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:12:33,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:12:33,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:12:33,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624638304] [2022-07-19 21:12:33,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624638304] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:12:33,825 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:12:33,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:12:33,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979347449] [2022-07-19 21:12:33,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:12:33,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:12:33,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:12:33,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:12:33,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:12:33,831 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 120 [2022-07-19 21:12:33,832 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 87 transitions, 242 flow. Second operand has 5 states, 5 states have (on average 105.2) internal successors, (526), 5 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:33,832 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:12:33,832 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 120 [2022-07-19 21:12:33,832 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:12:33,897 INFO L129 PetriNetUnfolder]: 21/172 cut-off events. [2022-07-19 21:12:33,897 INFO L130 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-07-19 21:12:33,898 INFO L84 FinitePrefix]: Finished finitePrefix Result has 299 conditions, 172 events. 21/172 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 583 event pairs, 9 based on Foata normal form. 2/170 useless extension candidates. Maximal degree in co-relation 277. Up to 44 conditions per place. [2022-07-19 21:12:33,898 INFO L132 encePairwiseOnDemand]: 115/120 looper letters, 11 selfloop transitions, 0 changer transitions 9/95 dead transitions. [2022-07-19 21:12:33,898 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 95 transitions, 298 flow [2022-07-19 21:12:33,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 21:12:33,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-19 21:12:33,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 639 transitions. [2022-07-19 21:12:33,900 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8875 [2022-07-19 21:12:33,901 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 639 transitions. [2022-07-19 21:12:33,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 639 transitions. [2022-07-19 21:12:33,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:12:33,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 639 transitions. [2022-07-19 21:12:33,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 106.5) internal successors, (639), 6 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:33,905 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 120.0) internal successors, (840), 7 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:33,905 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 120.0) internal successors, (840), 7 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:33,906 INFO L186 Difference]: Start difference. First operand has 151 places, 87 transitions, 242 flow. Second operand 6 states and 639 transitions. [2022-07-19 21:12:33,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 95 transitions, 298 flow [2022-07-19 21:12:33,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 95 transitions, 264 flow, removed 11 selfloop flow, removed 14 redundant places. [2022-07-19 21:12:33,912 INFO L242 Difference]: Finished difference. Result has 104 places, 86 transitions, 214 flow [2022-07-19 21:12:33,912 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=214, PETRI_PLACES=104, PETRI_TRANSITIONS=86} [2022-07-19 21:12:33,913 INFO L279 CegarLoopForPetriNet]: 117 programPoint places, -13 predicate places. [2022-07-19 21:12:33,913 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 86 transitions, 214 flow [2022-07-19 21:12:33,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 105.2) internal successors, (526), 5 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:33,914 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:12:33,914 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:12:33,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 21:12:33,919 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:12:33,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:12:33,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1958656625, now seen corresponding path program 1 times [2022-07-19 21:12:33,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:12:33,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571595901] [2022-07-19 21:12:33,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:12:33,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:12:33,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:12:34,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:12:34,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:12:34,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571595901] [2022-07-19 21:12:34,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571595901] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:12:34,038 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:12:34,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 21:12:34,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373171852] [2022-07-19 21:12:34,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:12:34,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 21:12:34,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:12:34,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 21:12:34,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-19 21:12:34,042 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 120 [2022-07-19 21:12:34,044 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 86 transitions, 214 flow. Second operand has 9 states, 9 states have (on average 98.77777777777777) internal successors, (889), 9 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:34,044 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:12:34,045 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 120 [2022-07-19 21:12:34,045 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:12:34,206 INFO L129 PetriNetUnfolder]: 30/215 cut-off events. [2022-07-19 21:12:34,206 INFO L130 PetriNetUnfolder]: For 69/69 co-relation queries the response was YES. [2022-07-19 21:12:34,207 INFO L84 FinitePrefix]: Finished finitePrefix Result has 371 conditions, 215 events. 30/215 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 710 event pairs, 1 based on Foata normal form. 8/221 useless extension candidates. Maximal degree in co-relation 359. Up to 12 conditions per place. [2022-07-19 21:12:34,207 INFO L132 encePairwiseOnDemand]: 113/120 looper letters, 16 selfloop transitions, 5 changer transitions 23/110 dead transitions. [2022-07-19 21:12:34,207 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 110 transitions, 380 flow [2022-07-19 21:12:34,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 21:12:34,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-07-19 21:12:34,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1212 transitions. [2022-07-19 21:12:34,211 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8416666666666667 [2022-07-19 21:12:34,211 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1212 transitions. [2022-07-19 21:12:34,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1212 transitions. [2022-07-19 21:12:34,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:12:34,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1212 transitions. [2022-07-19 21:12:34,213 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 101.0) internal successors, (1212), 12 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:34,215 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 120.0) internal successors, (1560), 13 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:34,216 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 120.0) internal successors, (1560), 13 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:34,216 INFO L186 Difference]: Start difference. First operand has 104 places, 86 transitions, 214 flow. Second operand 12 states and 1212 transitions. [2022-07-19 21:12:34,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 110 transitions, 380 flow [2022-07-19 21:12:34,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 110 transitions, 370 flow, removed 4 selfloop flow, removed 5 redundant places. [2022-07-19 21:12:34,218 INFO L242 Difference]: Finished difference. Result has 106 places, 82 transitions, 193 flow [2022-07-19 21:12:34,219 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=193, PETRI_PLACES=106, PETRI_TRANSITIONS=82} [2022-07-19 21:12:34,221 INFO L279 CegarLoopForPetriNet]: 117 programPoint places, -11 predicate places. [2022-07-19 21:12:34,221 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 82 transitions, 193 flow [2022-07-19 21:12:34,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 98.77777777777777) internal successors, (889), 9 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:34,222 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:12:34,222 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:12:34,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 21:12:34,223 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:12:34,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:12:34,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1207648661, now seen corresponding path program 2 times [2022-07-19 21:12:34,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:12:34,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879532586] [2022-07-19 21:12:34,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:12:34,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:12:34,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 21:12:34,257 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-19 21:12:34,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 21:12:34,303 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-19 21:12:34,303 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-19 21:12:34,304 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-07-19 21:12:34,305 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2022-07-19 21:12:34,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 21:12:34,306 INFO L356 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2022-07-19 21:12:34,311 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-19 21:12:34,311 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-19 21:12:34,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 09:12:34 BasicIcfg [2022-07-19 21:12:34,361 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-19 21:12:34,361 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-19 21:12:34,361 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-19 21:12:34,362 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-19 21:12:34,362 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:12:32" (3/4) ... [2022-07-19 21:12:34,364 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-19 21:12:34,437 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-19 21:12:34,437 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-19 21:12:34,438 INFO L158 Benchmark]: Toolchain (without parser) took 2586.07ms. Allocated memory was 81.8MB in the beginning and 178.3MB in the end (delta: 96.5MB). Free memory was 45.8MB in the beginning and 145.1MB in the end (delta: -99.4MB). Peak memory consumption was 62.7MB. Max. memory is 16.1GB. [2022-07-19 21:12:34,438 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 81.8MB. Free memory was 53.2MB in the beginning and 53.1MB in the end (delta: 23.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 21:12:34,438 INFO L158 Benchmark]: CACSL2BoogieTranslator took 396.74ms. Allocated memory was 81.8MB in the beginning and 121.6MB in the end (delta: 39.8MB). Free memory was 45.5MB in the beginning and 86.6MB in the end (delta: -41.1MB). Peak memory consumption was 8.1MB. Max. memory is 16.1GB. [2022-07-19 21:12:34,439 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.53ms. Allocated memory is still 121.6MB. Free memory was 86.6MB in the beginning and 84.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 21:12:34,439 INFO L158 Benchmark]: Boogie Preprocessor took 37.86ms. Allocated memory is still 121.6MB. Free memory was 84.5MB in the beginning and 83.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 21:12:34,439 INFO L158 Benchmark]: RCFGBuilder took 325.02ms. Allocated memory is still 121.6MB. Free memory was 83.1MB in the beginning and 69.5MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-19 21:12:34,439 INFO L158 Benchmark]: TraceAbstraction took 1693.28ms. Allocated memory was 121.6MB in the beginning and 178.3MB in the end (delta: 56.6MB). Free memory was 68.8MB in the beginning and 80.7MB in the end (delta: -11.9MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. [2022-07-19 21:12:34,440 INFO L158 Benchmark]: Witness Printer took 76.03ms. Allocated memory is still 178.3MB. Free memory was 80.7MB in the beginning and 145.1MB in the end (delta: -64.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 21:12:34,441 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 81.8MB. Free memory was 53.2MB in the beginning and 53.1MB in the end (delta: 23.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 396.74ms. Allocated memory was 81.8MB in the beginning and 121.6MB in the end (delta: 39.8MB). Free memory was 45.5MB in the beginning and 86.6MB in the end (delta: -41.1MB). Peak memory consumption was 8.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.53ms. Allocated memory is still 121.6MB. Free memory was 86.6MB in the beginning and 84.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.86ms. Allocated memory is still 121.6MB. Free memory was 84.5MB in the beginning and 83.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 325.02ms. Allocated memory is still 121.6MB. Free memory was 83.1MB in the beginning and 69.5MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 1693.28ms. Allocated memory was 121.6MB in the beginning and 178.3MB in the end (delta: 56.6MB). Free memory was 68.8MB in the beginning and 80.7MB in the end (delta: -11.9MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. * Witness Printer took 76.03ms. Allocated memory is still 178.3MB. Free memory was 80.7MB in the beginning and 145.1MB in the end (delta: -64.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 690]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L697] 0 volatile int stoppingFlag; VAL [stoppingFlag=0] [L698] 0 volatile int pendingIo; VAL [pendingIo=0, stoppingFlag=0] [L699] 0 volatile int stoppingEvent; VAL [pendingIo=0, stoppingEvent=0, stoppingFlag=0] [L700] 0 volatile int stopped; VAL [pendingIo=0, stopped=0, stoppingEvent=0, stoppingFlag=0] [L756] 0 pthread_t t; VAL [pendingIo=0, stopped=0, stoppingEvent=0, stoppingFlag=0, t={3:0}] [L757] 0 pendingIo = 1 VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0, t={3:0}] [L758] 0 stoppingFlag = 0 VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0, t={3:0}] [L759] 0 stoppingEvent = 0 VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0, t={3:0}] [L760] 0 stopped = 0 VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0, t={3:0}] [L761] FCALL, FORK 0 pthread_create(&t, 0, BCSP_PnpStop, 0) VAL [pendingIo=1, pthread_create(&t, 0, BCSP_PnpStop, 0)=-1, stopped=0, stoppingEvent=0, stoppingFlag=0, t={3:0}] [L762] CALL 0 BCSP_PnpAdd(0) [L734] 0 int status; VAL [arg={0:0}, arg={0:0}, pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L735] CALL, EXPR 0 BCSP_IoIncrement() [L703] 0 int lsf = stoppingFlag; VAL [lsf=0, pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L705] COND FALSE 0 !(\read(lsf)) VAL [lsf=0, pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L745] 1 stoppingFlag = 1 VAL [arg={0:0}, arg={0:0}, pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=1] [L747] CALL 1 BCSP_IoDecrement() [L725] 1 int pending; VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=1] [L726] CALL, EXPR 1 dec() [L719] 1 pendingIo-- [L720] 1 int tmp = pendingIo; VAL [pendingIo=0, stopped=0, stoppingEvent=0, stoppingFlag=1, tmp=0] [L722] 1 return tmp; VAL [\result=0, pendingIo=0, stopped=0, stoppingEvent=0, stoppingFlag=1, tmp=0] [L726] RET, EXPR 1 dec() [L726] 1 pending = dec() VAL [dec()=0, pending=0, pendingIo=0, stopped=0, stoppingEvent=0, stoppingFlag=1] [L727] COND TRUE 1 pending == 0 VAL [pending=0, pendingIo=0, stopped=0, stoppingEvent=0, stoppingFlag=1] [L729] 1 stoppingEvent = 1 VAL [pending=0, pendingIo=0, stopped=0, stoppingEvent=1, stoppingFlag=1] [L747] RET 1 BCSP_IoDecrement() [L749] 1 int lse = stoppingEvent; VAL [arg={0:0}, arg={0:0}, lse=1, pendingIo=0, stopped=0, stoppingEvent=1, stoppingFlag=1] [L751] CALL 1 assume_abort_if_not(lse) [L686] COND FALSE 1 !(!cond) VAL [\old(cond)=1, cond=1, pendingIo=0, stopped=0, stoppingEvent=1, stoppingFlag=1] [L751] RET 1 assume_abort_if_not(lse) [L752] 1 stopped = 1 VAL [arg={0:0}, arg={0:0}, lse=1, pendingIo=0, stopped=1, stoppingEvent=1, stoppingFlag=1] [L709] 0 int lp = pendingIo; VAL [lp=0, lsf=0, pendingIo=0, stopped=1, stoppingEvent=1, stoppingFlag=1] [L712] 0 pendingIo = lp + 1 VAL [lp=0, lsf=0, pendingIo=1, stopped=1, stoppingEvent=1, stoppingFlag=1] [L715] 0 return 0; VAL [\result=0, lp=0, lsf=0, pendingIo=1, stopped=1, stoppingEvent=1, stoppingFlag=1] [L735] RET, EXPR 0 BCSP_IoIncrement() [L735] 0 status = BCSP_IoIncrement() VAL [arg={0:0}, arg={0:0}, BCSP_IoIncrement()=0, pendingIo=1, status=0, stopped=1, stoppingEvent=1, stoppingFlag=1] [L736] COND TRUE 0 status == 0 VAL [arg={0:0}, arg={0:0}, pendingIo=1, status=0, stopped=1, stoppingEvent=1, stoppingFlag=1] [L737] 0 int local_assertion = !stopped; VAL [arg={0:0}, arg={0:0}, local_assertion=0, pendingIo=1, status=0, stopped=1, stoppingEvent=1, stoppingFlag=1] [L738] CALL 0 __VERIFIER_assert(local_assertion) [L689] COND TRUE 0 !(cond) VAL [\old(cond)=0, cond=0, pendingIo=1, stopped=1, stoppingEvent=1, stoppingFlag=1] [L690] 0 reach_error() VAL [\old(cond)=0, cond=0, pendingIo=1, stopped=1, stoppingEvent=1, stoppingFlag=1] - UnprovableResult [Line: 761]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 146 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.5s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 127 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 127 mSDsluCounter, 179 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 184 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 247 IncrementalHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 53 mSDtfsCounter, 247 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 56 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=325occurred in iteration=2, InterpolantAutomatonStates: 43, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 421 NumberOfCodeBlocks, 421 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 336 ConstructedInterpolants, 0 QuantifiedInterpolants, 652 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-07-19 21:12:34,467 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE