./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-lit/fkp2013_variant-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 96f16385 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-lit/fkp2013_variant-2.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 f51b9b30e22bffeec62b3fe2d58bec4819b7724c .................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-96f1638 [2020-12-02 12:14:24,206 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 12:14:24,208 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 12:14:24,260 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 12:14:24,261 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 12:14:24,267 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 12:14:24,269 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 12:14:24,276 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 12:14:24,280 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 12:14:24,287 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 12:14:24,289 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 12:14:24,294 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 12:14:24,295 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 12:14:24,299 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 12:14:24,300 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 12:14:24,302 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 12:14:24,303 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 12:14:24,307 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 12:14:24,310 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 12:14:24,318 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 12:14:24,320 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 12:14:24,322 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 12:14:24,325 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 12:14:24,326 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 12:14:24,334 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 12:14:24,335 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 12:14:24,335 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 12:14:24,337 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 12:14:24,338 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 12:14:24,339 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 12:14:24,339 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 12:14:24,340 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 12:14:24,343 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 12:14:24,344 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 12:14:24,345 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 12:14:24,345 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 12:14:24,348 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 12:14:24,349 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 12:14:24,349 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 12:14:24,351 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 12:14:24,352 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 12:14:24,353 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-02 12:14:24,413 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 12:14:24,423 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 12:14:24,427 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 12:14:24,427 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 12:14:24,427 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 12:14:24,428 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 12:14:24,428 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 12:14:24,428 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-02 12:14:24,428 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 12:14:24,429 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 12:14:24,430 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 12:14:24,430 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 12:14:24,430 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 12:14:24,430 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 12:14:24,430 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 12:14:24,431 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 12:14:24,431 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 12:14:24,431 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 12:14:24,431 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 12:14:24,431 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-02 12:14:24,432 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 12:14:24,432 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 12:14:24,432 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 12:14:24,432 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 12:14:24,433 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 12:14:24,433 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-02 12:14:24,433 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-02 12:14:24,433 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 12:14:24,433 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 12:14:24,434 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f51b9b30e22bffeec62b3fe2d58bec4819b7724c [2020-12-02 12:14:24,872 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 12:14:24,898 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 12:14:24,902 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 12:14:24,903 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 12:14:24,904 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 12:14:24,905 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-lit/fkp2013_variant-2.i [2020-12-02 12:14:24,983 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c30d666f/95faf27565d147eab3ac0dea17fe5833/FLAGd44ddfed0 [2020-12-02 12:14:25,669 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 12:14:25,671 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-lit/fkp2013_variant-2.i [2020-12-02 12:14:25,694 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c30d666f/95faf27565d147eab3ac0dea17fe5833/FLAGd44ddfed0 [2020-12-02 12:14:25,968 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c30d666f/95faf27565d147eab3ac0dea17fe5833 [2020-12-02 12:14:25,972 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 12:14:25,979 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 12:14:25,981 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 12:14:25,981 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 12:14:25,986 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 12:14:25,987 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:14:25" (1/1) ... [2020-12-02 12:14:25,996 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e0fdb96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:14:25, skipping insertion in model container [2020-12-02 12:14:25,997 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:14:25" (1/1) ... [2020-12-02 12:14:26,007 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 12:14:26,045 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-02 12:14:26,469 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-lit/fkp2013_variant-2.i[30003,30016] [2020-12-02 12:14:26,493 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 12:14:26,504 INFO L203 MainTranslator]: Completed pre-run [2020-12-02 12:14:26,562 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-lit/fkp2013_variant-2.i[30003,30016] [2020-12-02 12:14:26,568 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 12:14:26,672 INFO L208 MainTranslator]: Completed translation [2020-12-02 12:14:26,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:14:26 WrapperNode [2020-12-02 12:14:26,673 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 12:14:26,675 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 12:14:26,675 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 12:14:26,675 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 12:14:26,685 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:14:26" (1/1) ... [2020-12-02 12:14:26,701 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:14:26" (1/1) ... [2020-12-02 12:14:26,725 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 12:14:26,726 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 12:14:26,726 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 12:14:26,726 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 12:14:26,736 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:14:26" (1/1) ... [2020-12-02 12:14:26,737 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:14:26" (1/1) ... [2020-12-02 12:14:26,740 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:14:26" (1/1) ... [2020-12-02 12:14:26,740 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:14:26" (1/1) ... [2020-12-02 12:14:26,746 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:14:26" (1/1) ... [2020-12-02 12:14:26,750 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:14:26" (1/1) ... [2020-12-02 12:14:26,753 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:14:26" (1/1) ... [2020-12-02 12:14:26,756 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 12:14:26,758 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 12:14:26,758 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 12:14:26,758 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 12:14:26,759 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:14:26" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 12:14:26,873 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-12-02 12:14:26,875 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-12-02 12:14:26,875 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-12-02 12:14:26,876 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-12-02 12:14:26,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-02 12:14:26,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 12:14:26,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-02 12:14:26,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-02 12:14:26,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 12:14:26,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 12:14:26,881 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-02 12:14:27,459 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 12:14:27,459 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-12-02 12:14:27,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:14:27 BoogieIcfgContainer [2020-12-02 12:14:27,462 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 12:14:27,465 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 12:14:27,465 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 12:14:27,470 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 12:14:27,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:14:25" (1/3) ... [2020-12-02 12:14:27,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72ce5293 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:14:27, skipping insertion in model container [2020-12-02 12:14:27,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:14:26" (2/3) ... [2020-12-02 12:14:27,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72ce5293 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:14:27, skipping insertion in model container [2020-12-02 12:14:27,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:14:27" (3/3) ... [2020-12-02 12:14:27,476 INFO L111 eAbstractionObserver]: Analyzing ICFG fkp2013_variant-2.i [2020-12-02 12:14:27,500 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-02 12:14:27,501 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 12:14:27,505 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-02 12:14:27,507 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-02 12:14:27,561 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:27,562 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:27,562 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:27,562 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:27,563 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:27,563 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:27,564 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:27,564 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:27,565 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:27,565 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:27,566 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:27,566 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:27,567 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:27,567 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:27,567 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:27,567 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:27,568 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:27,568 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:27,569 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:27,569 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:27,569 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:27,569 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:27,570 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:27,570 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:27,571 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:27,572 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:27,572 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:27,572 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:27,575 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:27,575 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:27,576 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:27,576 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:27,576 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:27,576 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:27,577 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:27,578 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:27,578 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:27,578 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:27,579 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:27,579 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:27,580 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:27,580 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:27,583 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:27,584 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:27,584 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:27,584 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:27,584 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:27,591 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:27,591 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:27,591 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:27,591 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:27,592 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:27,592 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:27,595 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-02 12:14:27,611 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-02 12:14:27,652 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 12:14:27,652 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 12:14:27,652 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 12:14:27,652 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 12:14:27,653 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 12:14:27,653 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 12:14:27,653 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 12:14:27,653 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 12:14:27,672 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-02 12:14:27,674 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 66 transitions, 142 flow [2020-12-02 12:14:27,678 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 66 transitions, 142 flow [2020-12-02 12:14:27,681 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 69 places, 66 transitions, 142 flow [2020-12-02 12:14:27,757 INFO L129 PetriNetUnfolder]: 4/76 cut-off events. [2020-12-02 12:14:27,758 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-02 12:14:27,769 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 76 events. 4/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 102 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 55. Up to 4 conditions per place. [2020-12-02 12:14:27,773 INFO L116 LiptonReduction]: Number of co-enabled transitions 742 [2020-12-02 12:14:30,674 WARN L197 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-12-02 12:14:30,809 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-12-02 12:14:30,962 WARN L197 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-12-02 12:14:31,121 WARN L197 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-12-02 12:14:31,444 WARN L197 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 98 [2020-12-02 12:14:31,587 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-12-02 12:14:31,938 WARN L197 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 101 [2020-12-02 12:14:32,096 WARN L197 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-12-02 12:14:32,408 WARN L197 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 94 [2020-12-02 12:14:32,559 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-12-02 12:14:32,925 WARN L197 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 97 [2020-12-02 12:14:33,098 WARN L197 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-12-02 12:14:33,102 INFO L131 LiptonReduction]: Checked pairs total: 665 [2020-12-02 12:14:33,102 INFO L133 LiptonReduction]: Total number of compositions: 62 [2020-12-02 12:14:33,110 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 18 places, 12 transitions, 34 flow [2020-12-02 12:14:33,120 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 44 states. [2020-12-02 12:14:33,122 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-12-02 12:14:33,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-12-02 12:14:33,129 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:14:33,130 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-12-02 12:14:33,130 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-02 12:14:33,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:14:33,137 INFO L82 PathProgramCache]: Analyzing trace with hash 257239, now seen corresponding path program 1 times [2020-12-02 12:14:33,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:14:33,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228966443] [2020-12-02 12:14:33,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:14:33,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:14:33,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:14:33,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228966443] [2020-12-02 12:14:33,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:14:33,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-02 12:14:33,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560462526] [2020-12-02 12:14:33,385 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-02 12:14:33,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:14:33,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-02 12:14:33,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-02 12:14:33,404 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 3 states. [2020-12-02 12:14:33,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:14:33,450 INFO L93 Difference]: Finished difference Result 40 states and 63 transitions. [2020-12-02 12:14:33,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-02 12:14:33,452 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-12-02 12:14:33,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:14:33,463 INFO L225 Difference]: With dead ends: 40 [2020-12-02 12:14:33,463 INFO L226 Difference]: Without dead ends: 35 [2020-12-02 12:14:33,465 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-02 12:14:33,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-12-02 12:14:33,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2020-12-02 12:14:33,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-02 12:14:33,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 51 transitions. [2020-12-02 12:14:33,507 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 51 transitions. Word has length 3 [2020-12-02 12:14:33,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:14:33,508 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 51 transitions. [2020-12-02 12:14:33,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-02 12:14:33,508 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 51 transitions. [2020-12-02 12:14:33,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-02 12:14:33,509 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:14:33,509 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:14:33,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-02 12:14:33,510 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-02 12:14:33,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:14:33,511 INFO L82 PathProgramCache]: Analyzing trace with hash 1313687711, now seen corresponding path program 1 times [2020-12-02 12:14:33,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:14:33,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282930851] [2020-12-02 12:14:33,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:14:33,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-02 12:14:33,546 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-02 12:14:33,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-02 12:14:33,573 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-02 12:14:33,601 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-02 12:14:33,601 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-02 12:14:33,602 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-02 12:14:33,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 12:14:33 BasicIcfg [2020-12-02 12:14:33,641 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 12:14:33,642 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 12:14:33,642 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 12:14:33,642 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 12:14:33,643 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:14:27" (3/4) ... [2020-12-02 12:14:33,649 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-02 12:14:33,741 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-12-02 12:14:33,742 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 12:14:33,743 INFO L168 Benchmark]: Toolchain (without parser) took 7764.65 ms. Allocated memory was 46.1 MB in the beginning and 125.8 MB in the end (delta: 79.7 MB). Free memory was 31.1 MB in the beginning and 68.1 MB in the end (delta: -37.0 MB). Peak memory consumption was 41.2 MB. Max. memory is 16.1 GB. [2020-12-02 12:14:33,744 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 46.1 MB. Free memory was 29.2 MB in the beginning and 29.2 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 12:14:33,749 INFO L168 Benchmark]: CACSL2BoogieTranslator took 693.00 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 30.8 MB in the beginning and 36.9 MB in the end (delta: -6.0 MB). Peak memory consumption was 17.1 MB. Max. memory is 16.1 GB. [2020-12-02 12:14:33,752 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.65 ms. Allocated memory is still 56.6 MB. Free memory was 36.9 MB in the beginning and 34.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 12:14:33,754 INFO L168 Benchmark]: Boogie Preprocessor took 30.62 ms. Allocated memory is still 56.6 MB. Free memory was 34.9 MB in the beginning and 33.7 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 12:14:33,758 INFO L168 Benchmark]: RCFGBuilder took 704.85 ms. Allocated memory is still 56.6 MB. Free memory was 33.4 MB in the beginning and 26.8 MB in the end (delta: 6.7 MB). Peak memory consumption was 11.9 MB. Max. memory is 16.1 GB. [2020-12-02 12:14:33,760 INFO L168 Benchmark]: TraceAbstraction took 6175.75 ms. Allocated memory was 56.6 MB in the beginning and 125.8 MB in the end (delta: 69.2 MB). Free memory was 26.3 MB in the beginning and 71.3 MB in the end (delta: -45.0 MB). Peak memory consumption was 24.7 MB. Max. memory is 16.1 GB. [2020-12-02 12:14:33,761 INFO L168 Benchmark]: Witness Printer took 100.35 ms. Allocated memory is still 125.8 MB. Free memory was 71.3 MB in the beginning and 68.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 12:14:33,770 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 46.1 MB. Free memory was 29.2 MB in the beginning and 29.2 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 693.00 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 30.8 MB in the beginning and 36.9 MB in the end (delta: -6.0 MB). Peak memory consumption was 17.1 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 50.65 ms. Allocated memory is still 56.6 MB. Free memory was 36.9 MB in the beginning and 34.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.62 ms. Allocated memory is still 56.6 MB. Free memory was 34.9 MB in the beginning and 33.7 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 704.85 ms. Allocated memory is still 56.6 MB. Free memory was 33.4 MB in the beginning and 26.8 MB in the end (delta: 6.7 MB). Peak memory consumption was 11.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6175.75 ms. Allocated memory was 56.6 MB in the beginning and 125.8 MB in the end (delta: 69.2 MB). Free memory was 26.3 MB in the beginning and 71.3 MB in the end (delta: -45.0 MB). Peak memory consumption was 24.7 MB. Max. memory is 16.1 GB. * Witness Printer took 100.35 ms. Allocated memory is still 125.8 MB. Free memory was 71.3 MB in the beginning and 68.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 489 VarBasedMoverChecksPositive, 4 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 4 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 3 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 5.4s, 69 PlacesBefore, 18 PlacesAfterwards, 66 TransitionsBefore, 12 TransitionsAfterwards, 742 CoEnabledTransitionPairs, 7 FixpointIterations, 27 TrivialSequentialCompositions, 26 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 5 ConcurrentYvCompositions, 3 ChoiceCompositions, 62 TotalNumberOfCompositions, 665 MoverChecksTotal - CounterExampleResult [Line: 690]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L697] 0 volatile int x; [L698] 0 volatile int n; [L710] 0 pthread_t t1, t2; [L711] 0 int i; [L712] 0 x = 0 [L713] 0 n = __VERIFIER_nondet_int() [L686] COND FALSE 0 !(!cond) [L715] FCALL, FORK 0 pthread_create(&t1, 0, thr1, 0) VAL [n=1, x=0] [L716] 0 i = 0 VAL [n=1, x=0] [L716] COND TRUE 0 i < n [L717] FCALL, FORK 0 pthread_create(&t2, 0, thr2, 0) VAL [arg={0:0}, n=1, x=0] [L704] 2 int t; [L705] 2 t = x [L706] 2 x = t + 1 [L707] 2 return 0; [L689] COND TRUE 1 !(cond) [L690] 1 reach_error() VAL [\result={0:0}, arg={0:0}, arg={0:0}, n=1, t=0, x=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 63 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.4s, HoareTripleCheckerStatistics: 7 SDtfs, 7 SDslu, 2 SDs, 0 SdLazy, 8 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 2 ConstructedInterpolants, 0 QuantifiedInterpolants, 20 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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! Received shutdown request...