./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_46-escape_racefree.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/goblint-regression/28-race_reach_46-escape_racefree.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 4b7c7619d813e48364b259b1a428c27bb8d838fdbf884f11806f1a0c23ff1cb9 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 21:19:14,334 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 21:19:14,336 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 21:19:14,378 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 21:19:14,379 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 21:19:14,380 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 21:19:14,383 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 21:19:14,385 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 21:19:14,386 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 21:19:14,390 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 21:19:14,390 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 21:19:14,392 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 21:19:14,392 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 21:19:14,394 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 21:19:14,395 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 21:19:14,397 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 21:19:14,398 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 21:19:14,399 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 21:19:14,400 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 21:19:14,404 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 21:19:14,406 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 21:19:14,407 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 21:19:14,407 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 21:19:14,408 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 21:19:14,409 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 21:19:14,414 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 21:19:14,414 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 21:19:14,414 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 21:19:14,415 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 21:19:14,415 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 21:19:14,416 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 21:19:14,416 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 21:19:14,417 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 21:19:14,418 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 21:19:14,418 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 21:19:14,419 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 21:19:14,419 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 21:19:14,419 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 21:19:14,420 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 21:19:14,420 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 21:19:14,420 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 21:19:14,422 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 21:19:14,423 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 21:19:14,444 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 21:19:14,444 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 21:19:14,444 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 21:19:14,445 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 21:19:14,445 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 21:19:14,445 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 21:19:14,446 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 21:19:14,446 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 21:19:14,446 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 21:19:14,447 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 21:19:14,447 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 21:19:14,447 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 21:19:14,447 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 21:19:14,447 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 21:19:14,447 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 21:19:14,448 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 21:19:14,448 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 21:19:14,448 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 21:19:14,449 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 21:19:14,449 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 21:19:14,449 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 21:19:14,449 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 21:19:14,449 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 21:19:14,449 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 21:19:14,450 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:19:14,450 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 21:19:14,450 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 21:19:14,450 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 21:19:14,450 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 21:19:14,450 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 21:19:14,451 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 21:19:14,451 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 21:19:14,451 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 21:19:14,451 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4b7c7619d813e48364b259b1a428c27bb8d838fdbf884f11806f1a0c23ff1cb9 [2022-07-19 21:19:14,660 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 21:19:14,679 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 21:19:14,681 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 21:19:14,683 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 21:19:14,683 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 21:19:14,684 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_46-escape_racefree.i [2022-07-19 21:19:14,738 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7249c0408/f46f5063c03c4921bf9a987ef338ab0c/FLAG7897f6c2b [2022-07-19 21:19:15,124 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 21:19:15,124 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_46-escape_racefree.i [2022-07-19 21:19:15,137 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7249c0408/f46f5063c03c4921bf9a987ef338ab0c/FLAG7897f6c2b [2022-07-19 21:19:15,477 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7249c0408/f46f5063c03c4921bf9a987ef338ab0c [2022-07-19 21:19:15,479 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 21:19:15,480 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 21:19:15,495 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 21:19:15,495 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 21:19:15,498 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 21:19:15,498 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:19:15" (1/1) ... [2022-07-19 21:19:15,499 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@659448c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:19:15, skipping insertion in model container [2022-07-19 21:19:15,499 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:19:15" (1/1) ... [2022-07-19 21:19:15,504 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 21:19:15,536 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 21:19:15,804 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/goblint-regression/28-race_reach_46-escape_racefree.i[30176,30189] [2022-07-19 21:19:15,824 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:19:15,832 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 21:19:15,864 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/goblint-regression/28-race_reach_46-escape_racefree.i[30176,30189] [2022-07-19 21:19:15,880 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:19:15,910 INFO L208 MainTranslator]: Completed translation [2022-07-19 21:19:15,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:19:15 WrapperNode [2022-07-19 21:19:15,911 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 21:19:15,912 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 21:19:15,912 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 21:19:15,912 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 21:19:15,917 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:19:15" (1/1) ... [2022-07-19 21:19:15,938 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:19:15" (1/1) ... [2022-07-19 21:19:15,959 INFO L137 Inliner]: procedures = 170, calls = 39, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 71 [2022-07-19 21:19:15,960 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 21:19:15,960 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 21:19:15,961 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 21:19:15,961 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 21:19:15,967 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:19:15" (1/1) ... [2022-07-19 21:19:15,975 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:19:15" (1/1) ... [2022-07-19 21:19:15,977 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:19:15" (1/1) ... [2022-07-19 21:19:15,977 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:19:15" (1/1) ... [2022-07-19 21:19:15,980 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:19:15" (1/1) ... [2022-07-19 21:19:15,989 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:19:15" (1/1) ... [2022-07-19 21:19:15,991 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:19:15" (1/1) ... [2022-07-19 21:19:15,996 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 21:19:16,000 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 21:19:16,000 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 21:19:16,001 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 21:19:16,001 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:19:15" (1/1) ... [2022-07-19 21:19:16,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:19:16,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:19:16,025 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 21:19:16,044 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 21:19:16,061 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 21:19:16,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 21:19:16,061 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-07-19 21:19:16,061 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 21:19:16,061 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 21:19:16,061 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-07-19 21:19:16,061 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-07-19 21:19:16,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 21:19:16,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 21:19:16,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 21:19:16,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 21:19:16,063 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 21:19:16,133 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 21:19:16,134 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 21:19:16,274 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 21:19:16,279 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 21:19:16,279 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2022-07-19 21:19:16,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:19:16 BoogieIcfgContainer [2022-07-19 21:19:16,281 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 21:19:16,282 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 21:19:16,282 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 21:19:16,285 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 21:19:16,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:19:15" (1/3) ... [2022-07-19 21:19:16,285 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bbfcf5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:19:16, skipping insertion in model container [2022-07-19 21:19:16,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:19:15" (2/3) ... [2022-07-19 21:19:16,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bbfcf5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:19:16, skipping insertion in model container [2022-07-19 21:19:16,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:19:16" (3/3) ... [2022-07-19 21:19:16,287 INFO L111 eAbstractionObserver]: Analyzing ICFG 28-race_reach_46-escape_racefree.i [2022-07-19 21:19:16,291 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-19 21:19:16,298 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 21:19:16,299 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 21:19:16,299 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-19 21:19:16,340 INFO L135 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-07-19 21:19:16,367 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 105 places, 110 transitions, 228 flow [2022-07-19 21:19:16,403 INFO L129 PetriNetUnfolder]: 9/109 cut-off events. [2022-07-19 21:19:16,404 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-07-19 21:19:16,406 INFO L84 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 109 events. 9/109 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 158 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 57. Up to 3 conditions per place. [2022-07-19 21:19:16,407 INFO L82 GeneralOperation]: Start removeDead. Operand has 105 places, 110 transitions, 228 flow [2022-07-19 21:19:16,412 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 94 places, 99 transitions, 201 flow [2022-07-19 21:19:16,427 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:19:16,434 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@4fb6fc99, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3c53faad [2022-07-19 21:19:16,434 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-19 21:19:16,464 INFO L129 PetriNetUnfolder]: 4/88 cut-off events. [2022-07-19 21:19:16,464 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-19 21:19:16,464 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:19:16,465 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:19:16,466 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:19:16,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:19:16,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1929624586, now seen corresponding path program 1 times [2022-07-19 21:19:16,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:19:16,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397890630] [2022-07-19 21:19:16,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:19:16,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:19:16,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:19:16,813 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 21:19:16,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:19:16,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397890630] [2022-07-19 21:19:16,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397890630] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:19:16,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:19:16,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 21:19:16,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765911033] [2022-07-19 21:19:16,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:19:16,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 21:19:16,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:19:16,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 21:19:16,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-19 21:19:16,850 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 110 [2022-07-19 21:19:16,855 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 99 transitions, 201 flow. Second operand has 9 states, 9 states have (on average 63.111111111111114) internal successors, (568), 9 states have internal predecessors, (568), 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 21:19:16,856 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:19:16,856 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 110 [2022-07-19 21:19:16,857 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:19:17,159 INFO L129 PetriNetUnfolder]: 41/308 cut-off events. [2022-07-19 21:19:17,160 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-19 21:19:17,161 INFO L84 FinitePrefix]: Finished finitePrefix Result has 440 conditions, 308 events. 41/308 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1418 event pairs, 10 based on Foata normal form. 96/401 useless extension candidates. Maximal degree in co-relation 370. Up to 29 conditions per place. [2022-07-19 21:19:17,162 INFO L132 encePairwiseOnDemand]: 91/110 looper letters, 28 selfloop transitions, 4 changer transitions 38/120 dead transitions. [2022-07-19 21:19:17,163 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 120 transitions, 375 flow [2022-07-19 21:19:17,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 21:19:17,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-19 21:19:17,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 948 transitions. [2022-07-19 21:19:17,178 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6155844155844156 [2022-07-19 21:19:17,179 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 948 transitions. [2022-07-19 21:19:17,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 948 transitions. [2022-07-19 21:19:17,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:19:17,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 948 transitions. [2022-07-19 21:19:17,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 67.71428571428571) internal successors, (948), 14 states have internal predecessors, (948), 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 21:19:17,194 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 110.0) internal successors, (1650), 15 states have internal predecessors, (1650), 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 21:19:17,195 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 110.0) internal successors, (1650), 15 states have internal predecessors, (1650), 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 21:19:17,196 INFO L186 Difference]: Start difference. First operand has 94 places, 99 transitions, 201 flow. Second operand 14 states and 948 transitions. [2022-07-19 21:19:17,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 120 transitions, 375 flow [2022-07-19 21:19:17,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 120 transitions, 374 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-19 21:19:17,201 INFO L242 Difference]: Finished difference. Result has 112 places, 82 transitions, 190 flow [2022-07-19 21:19:17,203 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=190, PETRI_PLACES=112, PETRI_TRANSITIONS=82} [2022-07-19 21:19:17,205 INFO L279 CegarLoopForPetriNet]: 94 programPoint places, 18 predicate places. [2022-07-19 21:19:17,205 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 82 transitions, 190 flow [2022-07-19 21:19:17,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 63.111111111111114) internal successors, (568), 9 states have internal predecessors, (568), 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 21:19:17,206 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:19:17,206 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] [2022-07-19 21:19:17,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 21:19:17,207 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:19:17,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:19:17,207 INFO L85 PathProgramCache]: Analyzing trace with hash -2129046964, now seen corresponding path program 1 times [2022-07-19 21:19:17,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:19:17,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146661957] [2022-07-19 21:19:17,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:19:17,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:19:17,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:19:17,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:19:17,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:19:17,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146661957] [2022-07-19 21:19:17,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146661957] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:19:17,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:19:17,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 21:19:17,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146552147] [2022-07-19 21:19:17,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:19:17,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 21:19:17,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:19:17,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 21:19:17,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-19 21:19:17,343 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 110 [2022-07-19 21:19:17,344 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 82 transitions, 190 flow. Second operand has 6 states, 6 states have (on average 78.83333333333333) internal successors, (473), 6 states have internal predecessors, (473), 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 21:19:17,344 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:19:17,344 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 110 [2022-07-19 21:19:17,344 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:19:17,393 INFO L129 PetriNetUnfolder]: 0/86 cut-off events. [2022-07-19 21:19:17,394 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-19 21:19:17,394 INFO L84 FinitePrefix]: Finished finitePrefix Result has 133 conditions, 86 events. 0/86 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 13 event pairs, 0 based on Foata normal form. 7/93 useless extension candidates. Maximal degree in co-relation 0. Up to 9 conditions per place. [2022-07-19 21:19:17,395 INFO L132 encePairwiseOnDemand]: 105/110 looper letters, 16 selfloop transitions, 5 changer transitions 0/82 dead transitions. [2022-07-19 21:19:17,395 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 82 transitions, 232 flow [2022-07-19 21:19:17,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:19:17,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-19 21:19:17,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 403 transitions. [2022-07-19 21:19:17,396 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7327272727272728 [2022-07-19 21:19:17,397 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 403 transitions. [2022-07-19 21:19:17,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 403 transitions. [2022-07-19 21:19:17,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:19:17,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 403 transitions. [2022-07-19 21:19:17,398 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 80.6) internal successors, (403), 5 states have internal predecessors, (403), 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 21:19:17,399 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 110.0) internal successors, (660), 6 states have internal predecessors, (660), 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 21:19:17,399 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 110.0) internal successors, (660), 6 states have internal predecessors, (660), 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 21:19:17,400 INFO L186 Difference]: Start difference. First operand has 112 places, 82 transitions, 190 flow. Second operand 5 states and 403 transitions. [2022-07-19 21:19:17,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 82 transitions, 232 flow [2022-07-19 21:19:17,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 82 transitions, 212 flow, removed 6 selfloop flow, removed 10 redundant places. [2022-07-19 21:19:17,402 INFO L242 Difference]: Finished difference. Result has 90 places, 82 transitions, 180 flow [2022-07-19 21:19:17,402 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=180, PETRI_PLACES=90, PETRI_TRANSITIONS=82} [2022-07-19 21:19:17,403 INFO L279 CegarLoopForPetriNet]: 94 programPoint places, -4 predicate places. [2022-07-19 21:19:17,403 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 82 transitions, 180 flow [2022-07-19 21:19:17,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 78.83333333333333) internal successors, (473), 6 states have internal predecessors, (473), 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 21:19:17,404 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:19:17,404 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 21:19:17,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 21:19:17,404 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:19:17,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:19:17,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1261698595, now seen corresponding path program 1 times [2022-07-19 21:19:17,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:19:17,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094141022] [2022-07-19 21:19:17,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:19:17,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:19:17,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:19:17,670 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 21:19:17,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:19:17,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094141022] [2022-07-19 21:19:17,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094141022] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:19:17,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:19:17,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-07-19 21:19:17,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652065889] [2022-07-19 21:19:17,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:19:17,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-19 21:19:17,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:19:17,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-19 21:19:17,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2022-07-19 21:19:17,677 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 110 [2022-07-19 21:19:17,678 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 82 transitions, 180 flow. Second operand has 17 states, 17 states have (on average 54.35294117647059) internal successors, (924), 17 states have internal predecessors, (924), 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 21:19:17,678 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:19:17,678 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 110 [2022-07-19 21:19:17,678 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:19:18,189 INFO L129 PetriNetUnfolder]: 0/84 cut-off events. [2022-07-19 21:19:18,190 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-07-19 21:19:18,190 INFO L84 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 84 events. 0/84 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 13 event pairs, 0 based on Foata normal form. 1/85 useless extension candidates. Maximal degree in co-relation 0. Up to 19 conditions per place. [2022-07-19 21:19:18,190 INFO L132 encePairwiseOnDemand]: 90/110 looper letters, 0 selfloop transitions, 0 changer transitions 80/80 dead transitions. [2022-07-19 21:19:18,190 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 80 transitions, 254 flow [2022-07-19 21:19:18,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-19 21:19:18,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-19 21:19:18,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1132 transitions. [2022-07-19 21:19:18,193 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.49004329004329006 [2022-07-19 21:19:18,193 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1132 transitions. [2022-07-19 21:19:18,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1132 transitions. [2022-07-19 21:19:18,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:19:18,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1132 transitions. [2022-07-19 21:19:18,196 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 53.904761904761905) internal successors, (1132), 21 states have internal predecessors, (1132), 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 21:19:18,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 110.0) internal successors, (2420), 22 states have internal predecessors, (2420), 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 21:19:18,199 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 110.0) internal successors, (2420), 22 states have internal predecessors, (2420), 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 21:19:18,199 INFO L186 Difference]: Start difference. First operand has 90 places, 82 transitions, 180 flow. Second operand 21 states and 1132 transitions. [2022-07-19 21:19:18,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 80 transitions, 254 flow [2022-07-19 21:19:18,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 80 transitions, 248 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-07-19 21:19:18,201 INFO L242 Difference]: Finished difference. Result has 105 places, 0 transitions, 0 flow [2022-07-19 21:19:18,201 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=0, PETRI_PLACES=105, PETRI_TRANSITIONS=0} [2022-07-19 21:19:18,202 INFO L279 CegarLoopForPetriNet]: 94 programPoint places, 11 predicate places. [2022-07-19 21:19:18,202 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 0 transitions, 0 flow [2022-07-19 21:19:18,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 54.35294117647059) internal successors, (924), 17 states have internal predecessors, (924), 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 21:19:18,205 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-07-19 21:19:18,205 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2022-07-19 21:19:18,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 21:19:18,205 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-07-19 21:19:18,208 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-19 21:19:18,208 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-19 21:19:18,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 09:19:18 BasicIcfg [2022-07-19 21:19:18,212 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-19 21:19:18,213 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-19 21:19:18,213 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-19 21:19:18,213 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-19 21:19:18,213 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:19:16" (3/4) ... [2022-07-19 21:19:18,215 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-19 21:19:18,220 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2022-07-19 21:19:18,223 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2022-07-19 21:19:18,223 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-07-19 21:19:18,223 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-19 21:19:18,223 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-19 21:19:18,247 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-19 21:19:18,247 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-19 21:19:18,247 INFO L158 Benchmark]: Toolchain (without parser) took 2767.36ms. Allocated memory was 115.3MB in the beginning and 165.7MB in the end (delta: 50.3MB). Free memory was 79.0MB in the beginning and 117.0MB in the end (delta: -38.0MB). Peak memory consumption was 10.9MB. Max. memory is 16.1GB. [2022-07-19 21:19:18,248 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 115.3MB. Free memory was 87.8MB in the beginning and 87.8MB in the end (delta: 31.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 21:19:18,248 INFO L158 Benchmark]: CACSL2BoogieTranslator took 416.12ms. Allocated memory is still 115.3MB. Free memory was 78.8MB in the beginning and 81.4MB in the end (delta: -2.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-19 21:19:18,248 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.09ms. Allocated memory is still 115.3MB. Free memory was 81.4MB in the beginning and 79.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 21:19:18,249 INFO L158 Benchmark]: Boogie Preprocessor took 39.04ms. Allocated memory is still 115.3MB. Free memory was 79.5MB in the beginning and 77.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 21:19:18,249 INFO L158 Benchmark]: RCFGBuilder took 280.81ms. Allocated memory is still 115.3MB. Free memory was 77.9MB in the beginning and 64.2MB in the end (delta: 13.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-07-19 21:19:18,249 INFO L158 Benchmark]: TraceAbstraction took 1930.35ms. Allocated memory was 115.3MB in the beginning and 165.7MB in the end (delta: 50.3MB). Free memory was 63.7MB in the beginning and 119.1MB in the end (delta: -55.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 21:19:18,249 INFO L158 Benchmark]: Witness Printer took 34.21ms. Allocated memory is still 165.7MB. Free memory was 119.1MB in the beginning and 117.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 21:19:18,251 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 115.3MB. Free memory was 87.8MB in the beginning and 87.8MB in the end (delta: 31.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 416.12ms. Allocated memory is still 115.3MB. Free memory was 78.8MB in the beginning and 81.4MB in the end (delta: -2.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.09ms. Allocated memory is still 115.3MB. Free memory was 81.4MB in the beginning and 79.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.04ms. Allocated memory is still 115.3MB. Free memory was 79.5MB in the beginning and 77.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 280.81ms. Allocated memory is still 115.3MB. Free memory was 77.9MB in the beginning and 64.2MB in the end (delta: 13.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 1930.35ms. Allocated memory was 115.3MB in the beginning and 165.7MB in the end (delta: 50.3MB). Free memory was 63.7MB in the beginning and 119.1MB in the end (delta: -55.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 34.21ms. Allocated memory is still 165.7MB. Free memory was 119.1MB in the beginning and 117.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 691]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 131 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: 1.8s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 185 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 185 mSDsluCounter, 410 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 355 mSDsCounter, 43 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 385 IncrementalHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 43 mSolverCounterUnsat, 57 mSDtfsCounter, 385 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 64 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=201occurred in iteration=0, InterpolantAutomatonStates: 40, 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, 0.5s InterpolantComputationTime, 200 NumberOfCodeBlocks, 200 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 197 ConstructedInterpolants, 0 QuantifiedInterpolants, 908 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-07-19 21:19:18,275 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 Result: TRUE