./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread/lazy01.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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/lazy01.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 b5d87933b05ad3566f9bc28daac5c0aeceb8a45433a1cac3d51a8d34f7f284f0 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 21:36:08,276 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 21:36:08,278 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 21:36:08,314 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 21:36:08,315 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 21:36:08,316 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 21:36:08,317 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 21:36:08,319 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 21:36:08,320 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 21:36:08,324 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 21:36:08,324 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 21:36:08,326 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 21:36:08,326 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 21:36:08,328 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 21:36:08,328 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 21:36:08,331 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 21:36:08,331 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 21:36:08,332 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 21:36:08,333 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 21:36:08,337 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 21:36:08,339 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 21:36:08,339 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 21:36:08,340 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 21:36:08,341 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 21:36:08,342 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 21:36:08,347 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 21:36:08,347 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 21:36:08,347 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 21:36:08,348 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 21:36:08,349 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 21:36:08,349 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 21:36:08,349 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 21:36:08,351 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 21:36:08,352 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 21:36:08,352 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 21:36:08,353 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 21:36:08,353 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 21:36:08,353 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 21:36:08,354 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 21:36:08,354 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 21:36:08,354 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 21:36:08,355 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 21:36:08,356 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 21:36:08,378 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 21:36:08,378 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 21:36:08,379 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 21:36:08,379 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 21:36:08,379 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 21:36:08,379 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 21:36:08,380 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 21:36:08,380 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 21:36:08,380 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 21:36:08,381 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 21:36:08,381 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 21:36:08,381 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 21:36:08,381 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 21:36:08,381 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 21:36:08,382 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 21:36:08,382 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 21:36:08,382 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 21:36:08,382 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 21:36:08,382 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 21:36:08,383 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 21:36:08,383 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 21:36:08,383 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 21:36:08,384 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 21:36:08,384 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 21:36:08,384 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 21:36:08,384 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 21:36:08,384 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 21:36:08,384 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 21:36:08,385 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 21:36:08,385 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 21:36:08,385 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 21:36:08,385 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 21:36:08,385 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 21:36:08,385 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b5d87933b05ad3566f9bc28daac5c0aeceb8a45433a1cac3d51a8d34f7f284f0 [2022-07-13 21:36:08,588 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 21:36:08,606 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 21:36:08,608 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 21:36:08,609 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 21:36:08,609 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 21:36:08,610 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/lazy01.i [2022-07-13 21:36:08,665 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d911e12ad/924374f35d674e60b41ecfb2eabd3af7/FLAG521a2f069 [2022-07-13 21:36:09,049 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 21:36:09,051 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/lazy01.i [2022-07-13 21:36:09,067 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d911e12ad/924374f35d674e60b41ecfb2eabd3af7/FLAG521a2f069 [2022-07-13 21:36:09,439 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d911e12ad/924374f35d674e60b41ecfb2eabd3af7 [2022-07-13 21:36:09,441 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 21:36:09,443 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 21:36:09,445 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 21:36:09,445 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 21:36:09,461 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 21:36:09,461 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:36:09" (1/1) ... [2022-07-13 21:36:09,462 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ea95a62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:36:09, skipping insertion in model container [2022-07-13 21:36:09,462 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:36:09" (1/1) ... [2022-07-13 21:36:09,467 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 21:36:09,520 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 21:36:09,793 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/lazy01.i[31042,31055] [2022-07-13 21:36:09,800 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 21:36:09,808 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 21:36:09,827 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/lazy01.i[31042,31055] [2022-07-13 21:36:09,830 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 21:36:09,863 INFO L208 MainTranslator]: Completed translation [2022-07-13 21:36:09,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:36:09 WrapperNode [2022-07-13 21:36:09,864 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 21:36:09,865 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 21:36:09,865 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 21:36:09,865 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 21:36:09,869 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:36:09" (1/1) ... [2022-07-13 21:36:09,889 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:36:09" (1/1) ... [2022-07-13 21:36:09,909 INFO L137 Inliner]: procedures = 169, calls = 33, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 62 [2022-07-13 21:36:09,910 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 21:36:09,911 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 21:36:09,911 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 21:36:09,911 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 21:36:09,916 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:36:09" (1/1) ... [2022-07-13 21:36:09,917 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:36:09" (1/1) ... [2022-07-13 21:36:09,928 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:36:09" (1/1) ... [2022-07-13 21:36:09,929 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:36:09" (1/1) ... [2022-07-13 21:36:09,935 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:36:09" (1/1) ... [2022-07-13 21:36:09,937 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:36:09" (1/1) ... [2022-07-13 21:36:09,938 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:36:09" (1/1) ... [2022-07-13 21:36:09,940 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 21:36:09,940 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 21:36:09,941 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 21:36:09,941 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 21:36:09,941 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:36:09" (1/1) ... [2022-07-13 21:36:09,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 21:36:09,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:36:09,981 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) [2022-07-13 21:36:09,984 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 [2022-07-13 21:36:10,011 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 21:36:10,011 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-13 21:36:10,012 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-13 21:36:10,012 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-13 21:36:10,012 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-13 21:36:10,012 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-13 21:36:10,015 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-13 21:36:10,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 21:36:10,015 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-07-13 21:36:10,015 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 21:36:10,015 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 21:36:10,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 21:36:10,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 21:36:10,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 21:36:10,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 21:36:10,017 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-13 21:36:10,147 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 21:36:10,148 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 21:36:10,340 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 21:36:10,345 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 21:36:10,347 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-13 21:36:10,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:36:10 BoogieIcfgContainer [2022-07-13 21:36:10,368 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 21:36:10,369 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 21:36:10,369 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 21:36:10,371 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 21:36:10,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 09:36:09" (1/3) ... [2022-07-13 21:36:10,372 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58e1dd49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:36:10, skipping insertion in model container [2022-07-13 21:36:10,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:36:09" (2/3) ... [2022-07-13 21:36:10,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58e1dd49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:36:10, skipping insertion in model container [2022-07-13 21:36:10,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:36:10" (3/3) ... [2022-07-13 21:36:10,374 INFO L111 eAbstractionObserver]: Analyzing ICFG lazy01.i [2022-07-13 21:36:10,377 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-13 21:36:10,391 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 21:36:10,392 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 21:36:10,392 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-13 21:36:10,433 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-07-13 21:36:10,458 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 100 places, 91 transitions, 206 flow [2022-07-13 21:36:10,497 INFO L129 PetriNetUnfolder]: 1/88 cut-off events. [2022-07-13 21:36:10,497 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-13 21:36:10,500 INFO L84 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 88 events. 1/88 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 62 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2022-07-13 21:36:10,501 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 91 transitions, 206 flow [2022-07-13 21:36:10,505 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 70 transitions, 155 flow [2022-07-13 21:36:10,516 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 21:36:10,521 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@23e13e7e, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@71f6ca6c [2022-07-13 21:36:10,522 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-07-13 21:36:10,533 INFO L129 PetriNetUnfolder]: 0/63 cut-off events. [2022-07-13 21:36:10,534 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-07-13 21:36:10,534 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:36:10,535 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] [2022-07-13 21:36:10,535 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread3Err0ASSERT_VIOLATIONERROR_FUNCTION === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-13 21:36:10,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:36:10,540 INFO L85 PathProgramCache]: Analyzing trace with hash 992235864, now seen corresponding path program 1 times [2022-07-13 21:36:10,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:36:10,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235327494] [2022-07-13 21:36:10,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:36:10,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:36:10,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:36:10,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:36:10,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:36:10,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235327494] [2022-07-13 21:36:10,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235327494] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:36:10,778 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:36:10,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 21:36:10,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220237385] [2022-07-13 21:36:10,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:36:10,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:36:10,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:36:10,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:36:10,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:36:10,818 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 91 [2022-07-13 21:36:10,822 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 70 transitions, 155 flow. Second operand has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 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) [2022-07-13 21:36:10,826 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:36:10,826 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 91 [2022-07-13 21:36:10,827 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:36:10,889 INFO L129 PetriNetUnfolder]: 19/154 cut-off events. [2022-07-13 21:36:10,889 INFO L130 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2022-07-13 21:36:10,890 INFO L84 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 154 events. 19/154 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 431 event pairs, 9 based on Foata normal form. 2/153 useless extension candidates. Maximal degree in co-relation 152. Up to 37 conditions per place. [2022-07-13 21:36:10,891 INFO L132 encePairwiseOnDemand]: 87/91 looper letters, 12 selfloop transitions, 3 changer transitions 0/75 dead transitions. [2022-07-13 21:36:10,891 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 75 transitions, 201 flow [2022-07-13 21:36:10,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:36:10,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 21:36:10,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 247 transitions. [2022-07-13 21:36:10,903 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9047619047619048 [2022-07-13 21:36:10,904 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 247 transitions. [2022-07-13 21:36:10,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 247 transitions. [2022-07-13 21:36:10,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:36:10,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 247 transitions. [2022-07-13 21:36:10,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 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) [2022-07-13 21:36:10,913 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 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) [2022-07-13 21:36:10,914 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 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) [2022-07-13 21:36:10,915 INFO L186 Difference]: Start difference. First operand has 80 places, 70 transitions, 155 flow. Second operand 3 states and 247 transitions. [2022-07-13 21:36:10,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 75 transitions, 201 flow [2022-07-13 21:36:10,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 75 transitions, 189 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-07-13 21:36:10,920 INFO L242 Difference]: Finished difference. Result has 78 places, 72 transitions, 165 flow [2022-07-13 21:36:10,921 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=165, PETRI_PLACES=78, PETRI_TRANSITIONS=72} [2022-07-13 21:36:10,924 INFO L279 CegarLoopForPetriNet]: 80 programPoint places, -2 predicate places. [2022-07-13 21:36:10,925 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 72 transitions, 165 flow [2022-07-13 21:36:10,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 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) [2022-07-13 21:36:10,925 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:36:10,925 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] [2022-07-13 21:36:10,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 21:36:10,926 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread3Err0ASSERT_VIOLATIONERROR_FUNCTION === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-13 21:36:10,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:36:10,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1694904598, now seen corresponding path program 1 times [2022-07-13 21:36:10,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:36:10,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454071040] [2022-07-13 21:36:10,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:36:10,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:36:10,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:36:10,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:36:10,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:36:10,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454071040] [2022-07-13 21:36:10,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454071040] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:36:10,979 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:36:10,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 21:36:10,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652195297] [2022-07-13 21:36:10,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:36:10,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:36:10,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:36:10,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:36:10,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:36:10,982 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 91 [2022-07-13 21:36:10,982 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 72 transitions, 165 flow. Second operand has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 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) [2022-07-13 21:36:10,983 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:36:10,983 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 91 [2022-07-13 21:36:10,983 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:36:11,079 INFO L129 PetriNetUnfolder]: 16/160 cut-off events. [2022-07-13 21:36:11,080 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-07-13 21:36:11,081 INFO L84 FinitePrefix]: Finished finitePrefix Result has 250 conditions, 160 events. 16/160 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 484 event pairs, 3 based on Foata normal form. 14/174 useless extension candidates. Maximal degree in co-relation 120. Up to 28 conditions per place. [2022-07-13 21:36:11,082 INFO L132 encePairwiseOnDemand]: 86/91 looper letters, 16 selfloop transitions, 5 changer transitions 0/76 dead transitions. [2022-07-13 21:36:11,082 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 76 transitions, 220 flow [2022-07-13 21:36:11,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:36:11,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 21:36:11,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 234 transitions. [2022-07-13 21:36:11,089 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8571428571428571 [2022-07-13 21:36:11,090 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 234 transitions. [2022-07-13 21:36:11,090 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 234 transitions. [2022-07-13 21:36:11,090 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:36:11,092 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 234 transitions. [2022-07-13 21:36:11,093 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 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) [2022-07-13 21:36:11,094 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 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) [2022-07-13 21:36:11,095 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 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) [2022-07-13 21:36:11,095 INFO L186 Difference]: Start difference. First operand has 78 places, 72 transitions, 165 flow. Second operand 3 states and 234 transitions. [2022-07-13 21:36:11,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 76 transitions, 220 flow [2022-07-13 21:36:11,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 76 transitions, 217 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-13 21:36:11,098 INFO L242 Difference]: Finished difference. Result has 79 places, 72 transitions, 172 flow [2022-07-13 21:36:11,099 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=172, PETRI_PLACES=79, PETRI_TRANSITIONS=72} [2022-07-13 21:36:11,099 INFO L279 CegarLoopForPetriNet]: 80 programPoint places, -1 predicate places. [2022-07-13 21:36:11,100 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 72 transitions, 172 flow [2022-07-13 21:36:11,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 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) [2022-07-13 21:36:11,100 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:36:11,101 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] [2022-07-13 21:36:11,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 21:36:11,101 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread3Err0ASSERT_VIOLATIONERROR_FUNCTION === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-13 21:36:11,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:36:11,102 INFO L85 PathProgramCache]: Analyzing trace with hash 915593402, now seen corresponding path program 1 times [2022-07-13 21:36:11,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:36:11,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188922396] [2022-07-13 21:36:11,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:36:11,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:36:11,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:36:11,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:36:11,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:36:11,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188922396] [2022-07-13 21:36:11,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188922396] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:36:11,176 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:36:11,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 21:36:11,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816607100] [2022-07-13 21:36:11,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:36:11,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 21:36:11,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:36:11,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 21:36:11,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-13 21:36:11,180 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 91 [2022-07-13 21:36:11,181 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 72 transitions, 172 flow. Second operand has 4 states, 4 states have (on average 78.5) internal successors, (314), 4 states have internal predecessors, (314), 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) [2022-07-13 21:36:11,181 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:36:11,181 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 91 [2022-07-13 21:36:11,181 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:36:11,225 INFO L129 PetriNetUnfolder]: 14/146 cut-off events. [2022-07-13 21:36:11,227 INFO L130 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-07-13 21:36:11,229 INFO L84 FinitePrefix]: Finished finitePrefix Result has 238 conditions, 146 events. 14/146 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 402 event pairs, 8 based on Foata normal form. 1/145 useless extension candidates. Maximal degree in co-relation 73. Up to 24 conditions per place. [2022-07-13 21:36:11,229 INFO L132 encePairwiseOnDemand]: 87/91 looper letters, 12 selfloop transitions, 4 changer transitions 0/76 dead transitions. [2022-07-13 21:36:11,230 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 76 transitions, 217 flow [2022-07-13 21:36:11,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 21:36:11,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-13 21:36:11,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 325 transitions. [2022-07-13 21:36:11,232 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8928571428571429 [2022-07-13 21:36:11,233 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 325 transitions. [2022-07-13 21:36:11,233 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 325 transitions. [2022-07-13 21:36:11,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:36:11,233 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 325 transitions. [2022-07-13 21:36:11,234 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 81.25) internal successors, (325), 4 states have internal predecessors, (325), 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) [2022-07-13 21:36:11,236 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 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) [2022-07-13 21:36:11,236 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 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) [2022-07-13 21:36:11,236 INFO L186 Difference]: Start difference. First operand has 79 places, 72 transitions, 172 flow. Second operand 4 states and 325 transitions. [2022-07-13 21:36:11,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 76 transitions, 217 flow [2022-07-13 21:36:11,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 76 transitions, 212 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-13 21:36:11,240 INFO L242 Difference]: Finished difference. Result has 82 places, 72 transitions, 179 flow [2022-07-13 21:36:11,240 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=179, PETRI_PLACES=82, PETRI_TRANSITIONS=72} [2022-07-13 21:36:11,242 INFO L279 CegarLoopForPetriNet]: 80 programPoint places, 2 predicate places. [2022-07-13 21:36:11,242 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 72 transitions, 179 flow [2022-07-13 21:36:11,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.5) internal successors, (314), 4 states have internal predecessors, (314), 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) [2022-07-13 21:36:11,242 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:36:11,242 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] [2022-07-13 21:36:11,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 21:36:11,243 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread3Err0ASSERT_VIOLATIONERROR_FUNCTION === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-13 21:36:11,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:36:11,244 INFO L85 PathProgramCache]: Analyzing trace with hash -168826354, now seen corresponding path program 1 times [2022-07-13 21:36:11,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:36:11,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361371769] [2022-07-13 21:36:11,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:36:11,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:36:11,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:36:11,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:36:11,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:36:11,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361371769] [2022-07-13 21:36:11,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361371769] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:36:11,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:36:11,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 21:36:11,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208265981] [2022-07-13 21:36:11,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:36:11,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 21:36:11,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:36:11,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 21:36:11,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 21:36:11,346 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 91 [2022-07-13 21:36:11,347 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 72 transitions, 179 flow. Second operand has 5 states, 5 states have (on average 77.6) internal successors, (388), 5 states have internal predecessors, (388), 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) [2022-07-13 21:36:11,347 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:36:11,347 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 91 [2022-07-13 21:36:11,347 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:36:11,411 INFO L129 PetriNetUnfolder]: 16/141 cut-off events. [2022-07-13 21:36:11,411 INFO L130 PetriNetUnfolder]: For 43/43 co-relation queries the response was YES. [2022-07-13 21:36:11,413 INFO L84 FinitePrefix]: Finished finitePrefix Result has 250 conditions, 141 events. 16/141 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 401 event pairs, 1 based on Foata normal form. 2/143 useless extension candidates. Maximal degree in co-relation 164. Up to 24 conditions per place. [2022-07-13 21:36:11,413 INFO L132 encePairwiseOnDemand]: 85/91 looper letters, 17 selfloop transitions, 6 changer transitions 0/82 dead transitions. [2022-07-13 21:36:11,414 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 82 transitions, 257 flow [2022-07-13 21:36:11,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 21:36:11,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-13 21:36:11,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 480 transitions. [2022-07-13 21:36:11,415 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8791208791208791 [2022-07-13 21:36:11,416 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 480 transitions. [2022-07-13 21:36:11,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 480 transitions. [2022-07-13 21:36:11,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:36:11,417 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 480 transitions. [2022-07-13 21:36:11,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 80.0) internal successors, (480), 6 states have internal predecessors, (480), 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) [2022-07-13 21:36:11,421 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 91.0) internal successors, (637), 7 states have internal predecessors, (637), 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) [2022-07-13 21:36:11,422 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 91.0) internal successors, (637), 7 states have internal predecessors, (637), 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) [2022-07-13 21:36:11,422 INFO L186 Difference]: Start difference. First operand has 82 places, 72 transitions, 179 flow. Second operand 6 states and 480 transitions. [2022-07-13 21:36:11,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 82 transitions, 257 flow [2022-07-13 21:36:11,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 82 transitions, 249 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-07-13 21:36:11,427 INFO L242 Difference]: Finished difference. Result has 88 places, 74 transitions, 200 flow [2022-07-13 21:36:11,428 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=200, PETRI_PLACES=88, PETRI_TRANSITIONS=74} [2022-07-13 21:36:11,429 INFO L279 CegarLoopForPetriNet]: 80 programPoint places, 8 predicate places. [2022-07-13 21:36:11,434 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 74 transitions, 200 flow [2022-07-13 21:36:11,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 77.6) internal successors, (388), 5 states have internal predecessors, (388), 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) [2022-07-13 21:36:11,435 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:36:11,435 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] [2022-07-13 21:36:11,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 21:36:11,436 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread3Err0ASSERT_VIOLATIONERROR_FUNCTION === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-13 21:36:11,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:36:11,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1553957284, now seen corresponding path program 1 times [2022-07-13 21:36:11,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:36:11,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768429632] [2022-07-13 21:36:11,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:36:11,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:36:11,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 21:36:11,490 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 21:36:11,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 21:36:11,535 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 21:36:11,535 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-13 21:36:11,536 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thread3Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2022-07-13 21:36:11,538 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2022-07-13 21:36:11,538 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2022-07-13 21:36:11,538 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2022-07-13 21:36:11,538 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2022-07-13 21:36:11,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 21:36:11,539 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-07-13 21:36:11,543 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-13 21:36:11,543 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-13 21:36:11,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.07 09:36:11 BasicIcfg [2022-07-13 21:36:11,579 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-13 21:36:11,580 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-13 21:36:11,580 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-13 21:36:11,580 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-13 21:36:11,580 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:36:10" (3/4) ... [2022-07-13 21:36:11,581 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-13 21:36:11,618 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-13 21:36:11,618 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-13 21:36:11,619 INFO L158 Benchmark]: Toolchain (without parser) took 2176.24ms. Allocated memory was 90.2MB in the beginning and 113.2MB in the end (delta: 23.1MB). Free memory was 54.2MB in the beginning and 68.6MB in the end (delta: -14.4MB). Peak memory consumption was 8.0MB. Max. memory is 16.1GB. [2022-07-13 21:36:11,619 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 90.2MB. Free memory was 59.8MB in the beginning and 59.7MB in the end (delta: 26.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 21:36:11,620 INFO L158 Benchmark]: CACSL2BoogieTranslator took 419.24ms. Allocated memory is still 90.2MB. Free memory was 54.1MB in the beginning and 55.8MB in the end (delta: -1.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-13 21:36:11,620 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.10ms. Allocated memory is still 90.2MB. Free memory was 55.8MB in the beginning and 53.9MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 21:36:11,620 INFO L158 Benchmark]: Boogie Preprocessor took 29.39ms. Allocated memory is still 90.2MB. Free memory was 53.9MB in the beginning and 52.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 21:36:11,621 INFO L158 Benchmark]: RCFGBuilder took 427.41ms. Allocated memory was 90.2MB in the beginning and 113.2MB in the end (delta: 23.1MB). Free memory was 52.6MB in the beginning and 90.3MB in the end (delta: -37.8MB). Peak memory consumption was 16.9MB. Max. memory is 16.1GB. [2022-07-13 21:36:11,621 INFO L158 Benchmark]: TraceAbstraction took 1210.25ms. Allocated memory is still 113.2MB. Free memory was 89.8MB in the beginning and 74.9MB in the end (delta: 14.9MB). Peak memory consumption was 14.5MB. Max. memory is 16.1GB. [2022-07-13 21:36:11,621 INFO L158 Benchmark]: Witness Printer took 38.82ms. Allocated memory is still 113.2MB. Free memory was 74.9MB in the beginning and 68.6MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-07-13 21:36:11,623 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 90.2MB. Free memory was 59.8MB in the beginning and 59.7MB in the end (delta: 26.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 419.24ms. Allocated memory is still 90.2MB. Free memory was 54.1MB in the beginning and 55.8MB in the end (delta: -1.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.10ms. Allocated memory is still 90.2MB. Free memory was 55.8MB in the beginning and 53.9MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.39ms. Allocated memory is still 90.2MB. Free memory was 53.9MB in the beginning and 52.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 427.41ms. Allocated memory was 90.2MB in the beginning and 113.2MB in the end (delta: 23.1MB). Free memory was 52.6MB in the beginning and 90.3MB in the end (delta: -37.8MB). Peak memory consumption was 16.9MB. Max. memory is 16.1GB. * TraceAbstraction took 1210.25ms. Allocated memory is still 113.2MB. Free memory was 89.8MB in the beginning and 74.9MB in the end (delta: 14.9MB). Peak memory consumption was 14.5MB. Max. memory is 16.1GB. * Witness Printer took 38.82ms. Allocated memory is still 113.2MB. Free memory was 74.9MB in the beginning and 68.6MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 722]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L702] 0 pthread_mutex_t mutex; VAL [mutex={3:0}] [L703] 0 int data = 0; VAL [data=0, mutex={3:0}] [L731] 0 pthread_t t1, t2, t3; VAL [data=0, mutex={3:0}, t1={6:0}, t2={7:0}, t3={5:0}] [L732] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [arg={0:0}, data=0, mutex={3:0}, pthread_create(&t1, 0, thread1, 0)=-2, t1={6:0}, t2={7:0}, t3={5:0}] [L733] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, data=0, mutex={3:0}, pthread_create(&t2, 0, thread2, 0)=-1, t1={6:0}, t2={7:0}, t3={5:0}] [L734] FCALL, FORK 0 pthread_create(&t3, 0, thread3, 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=0, mutex={3:0}, pthread_create(&t3, 0, thread3, 0)=0, t1={6:0}, t2={7:0}, t3={5:0}] [L707] 1 data++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=1, mutex={3:0}] [L714] 2 data+=2 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] [L721] COND TRUE 3 data >= 3 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] [L722] 3 reach_error() VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] - UnprovableResult [Line: 734]: 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. - UnprovableResult [Line: 733]: 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. - UnprovableResult [Line: 732]: 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 7 procedures, 123 locations, 5 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: 1.1s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 19 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 19 mSDsluCounter, 23 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 30 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 93 IncrementalHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 19 mSDtfsCounter, 93 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=200occurred in iteration=4, InterpolantAutomatonStates: 16, 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, 0.2s InterpolantComputationTime, 253 NumberOfCodeBlocks, 253 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 192 ConstructedInterpolants, 0 QuantifiedInterpolants, 444 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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! [2022-07-13 21:36:11,649 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, 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