./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/lazy01.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_57ff0c9d-a332-4523-8e62-34434f3273f6/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_57ff0c9d-a332-4523-8e62-34434f3273f6/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_57ff0c9d-a332-4523-8e62-34434f3273f6/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_57ff0c9d-a332-4523-8e62-34434f3273f6/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread/lazy01.i -s /tmp/vcloud-vcloud-master/worker/run_dir_57ff0c9d-a332-4523-8e62-34434f3273f6/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_57ff0c9d-a332-4523-8e62-34434f3273f6/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4de3a2ca09971f3eb45edfe4b976415f8e15d63f .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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-a4ecdab [2020-11-28 07:37:41,757 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:37:41,759 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:37:41,807 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:37:41,807 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:37:41,826 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:37:41,828 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:37:41,831 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:37:41,833 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:37:41,839 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:37:41,840 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:37:41,841 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:37:41,842 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:37:41,843 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:37:41,845 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:37:41,846 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:37:41,848 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:37:41,849 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:37:41,851 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:37:41,854 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:37:41,856 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:37:41,858 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:37:41,860 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:37:41,861 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:37:41,865 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:37:41,865 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:37:41,866 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:37:41,867 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:37:41,868 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:37:41,869 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:37:41,869 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:37:41,870 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:37:41,871 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:37:41,872 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:37:41,874 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:37:41,874 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:37:41,875 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:37:41,876 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:37:41,876 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:37:41,877 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:37:41,878 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:37:41,879 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_57ff0c9d-a332-4523-8e62-34434f3273f6/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:37:41,911 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:37:41,912 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:37:41,913 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:37:41,914 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:37:41,914 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:37:41,914 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:37:41,915 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:37:41,915 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:37:41,915 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:37:41,915 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:37:41,916 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:37:41,917 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:37:41,917 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:37:41,917 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:37:41,917 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:37:41,918 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:37:41,918 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:37:41,919 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:37:41,919 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:37:41,919 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:37:41,919 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:37:41,920 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:37:41,920 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:37:41,920 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:37:41,920 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:37:41,921 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:37:41,921 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:37:41,921 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:37:41,921 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:37:41,923 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:37:41,923 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:37:41,923 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:37:41,924 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:37:41,924 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:37:41,924 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:37:41,925 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:37:41,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:37:41,925 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:37:41,925 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:37:41,925 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:37:41,926 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_57ff0c9d-a332-4523-8e62-34434f3273f6/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_57ff0c9d-a332-4523-8e62-34434f3273f6/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4de3a2ca09971f3eb45edfe4b976415f8e15d63f [2020-11-28 07:37:42,227 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:37:42,273 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:37:42,275 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:37:42,277 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:37:42,278 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:37:42,279 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_57ff0c9d-a332-4523-8e62-34434f3273f6/bin/utaipan/../../sv-benchmarks/c/pthread/lazy01.i [2020-11-28 07:37:42,379 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_57ff0c9d-a332-4523-8e62-34434f3273f6/bin/utaipan/data/d36de29f4/18de1e8dd42444b78c477231f32fc0a3/FLAG29de56376 [2020-11-28 07:37:42,997 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:37:42,998 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_57ff0c9d-a332-4523-8e62-34434f3273f6/sv-benchmarks/c/pthread/lazy01.i [2020-11-28 07:37:43,021 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_57ff0c9d-a332-4523-8e62-34434f3273f6/bin/utaipan/data/d36de29f4/18de1e8dd42444b78c477231f32fc0a3/FLAG29de56376 [2020-11-28 07:37:43,260 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_57ff0c9d-a332-4523-8e62-34434f3273f6/bin/utaipan/data/d36de29f4/18de1e8dd42444b78c477231f32fc0a3 [2020-11-28 07:37:43,263 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:37:43,264 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:37:43,266 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:37:43,266 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:37:43,270 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:37:43,271 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:37:43" (1/1) ... [2020-11-28 07:37:43,273 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@457b394a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:43, skipping insertion in model container [2020-11-28 07:37:43,273 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:37:43" (1/1) ... [2020-11-28 07:37:43,287 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:37:43,346 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:37:43,721 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:37:43,735 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:37:43,773 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:37:43,856 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:37:43,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:43 WrapperNode [2020-11-28 07:37:43,857 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:37:43,858 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:37:43,859 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:37:43,859 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:37:43,867 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:43" (1/1) ... [2020-11-28 07:37:43,887 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:43" (1/1) ... [2020-11-28 07:37:43,919 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:37:43,920 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:37:43,921 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:37:43,921 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:37:43,928 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:43" (1/1) ... [2020-11-28 07:37:43,928 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:43" (1/1) ... [2020-11-28 07:37:43,931 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:43" (1/1) ... [2020-11-28 07:37:43,932 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:43" (1/1) ... [2020-11-28 07:37:43,940 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:43" (1/1) ... [2020-11-28 07:37:43,941 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:43" (1/1) ... [2020-11-28 07:37:43,944 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:43" (1/1) ... [2020-11-28 07:37:43,962 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:37:43,962 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:37:43,963 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:37:43,963 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:37:43,972 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:43" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_57ff0c9d-a332-4523-8e62-34434f3273f6/bin/utaipan/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 [2020-11-28 07:37:44,035 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 07:37:44,035 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2020-11-28 07:37:44,035 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2020-11-28 07:37:44,035 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2020-11-28 07:37:44,036 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2020-11-28 07:37:44,036 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2020-11-28 07:37:44,036 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2020-11-28 07:37:44,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 07:37:44,036 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2020-11-28 07:37:44,036 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:37:44,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 07:37:44,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:37:44,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:37:44,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:37:44,038 WARN L208 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-28 07:37:44,580 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:37:44,581 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-28 07:37:44,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:37:44 BoogieIcfgContainer [2020-11-28 07:37:44,582 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:37:44,584 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:37:44,584 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:37:44,587 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:37:44,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:37:43" (1/3) ... [2020-11-28 07:37:44,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c2986bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:37:44, skipping insertion in model container [2020-11-28 07:37:44,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:43" (2/3) ... [2020-11-28 07:37:44,589 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c2986bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:37:44, skipping insertion in model container [2020-11-28 07:37:44,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:37:44" (3/3) ... [2020-11-28 07:37:44,590 INFO L111 eAbstractionObserver]: Analyzing ICFG lazy01.i [2020-11-28 07:37:44,604 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-28 07:37:44,604 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:37:44,608 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:37:44,608 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-28 07:37:44,642 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:44,643 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:44,643 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:44,643 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:44,643 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:44,644 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:44,644 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:44,645 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:44,645 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:44,646 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:44,646 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:44,647 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:44,647 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:44,647 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:44,648 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:44,649 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:44,649 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:44,650 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:44,650 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:44,652 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:44,652 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:44,653 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:44,653 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:44,654 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:44,655 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:44,656 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:44,656 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:44,656 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:44,656 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:44,657 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:44,657 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:44,663 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:44,663 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:44,664 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:44,664 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:44,664 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:44,672 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:44,672 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:44,673 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:44,674 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:44,674 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:44,674 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:44,674 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:44,681 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:44,681 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:44,681 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:44,682 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:44,682 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:44,682 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:44,698 INFO L149 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2020-11-28 07:37:44,709 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-11-28 07:37:44,739 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:37:44,739 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:37:44,740 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:37:44,740 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:37:44,740 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:37:44,740 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:37:44,741 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:37:44,741 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:37:44,757 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-28 07:37:44,758 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 89 places, 87 transitions, 216 flow [2020-11-28 07:37:44,761 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 89 places, 87 transitions, 216 flow [2020-11-28 07:37:44,763 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 89 places, 87 transitions, 216 flow [2020-11-28 07:37:44,831 INFO L129 PetriNetUnfolder]: 7/95 cut-off events. [2020-11-28 07:37:44,831 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2020-11-28 07:37:44,836 INFO L80 FinitePrefix]: Finished finitePrefix Result has 117 conditions, 95 events. 7/95 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 150 event pairs, 0 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 57. Up to 6 conditions per place. [2020-11-28 07:37:44,841 INFO L116 LiptonReduction]: Number of co-enabled transitions 1376 [2020-11-28 07:37:47,058 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2020-11-28 07:37:47,602 WARN L193 SmtUtils]: Spent 419.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 111 [2020-11-28 07:37:47,852 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-11-28 07:37:47,946 INFO L131 LiptonReduction]: Checked pairs total: 6004 [2020-11-28 07:37:47,946 INFO L133 LiptonReduction]: Total number of compositions: 63 [2020-11-28 07:37:47,950 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 40 places, 37 transitions, 116 flow [2020-11-28 07:37:48,005 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 492 states. [2020-11-28 07:37:48,007 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states. [2020-11-28 07:37:48,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 07:37:48,019 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:37:48,020 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:37:48,020 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:37:48,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:37:48,026 INFO L82 PathProgramCache]: Analyzing trace with hash 588869376, now seen corresponding path program 1 times [2020-11-28 07:37:48,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:37:48,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970097447] [2020-11-28 07:37:48,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:37:48,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:37:48,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:37:48,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970097447] [2020-11-28 07:37:48,254 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:37:48,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-28 07:37:48,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032320073] [2020-11-28 07:37:48,259 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:37:48,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:37:48,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:37:48,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:37:48,283 INFO L87 Difference]: Start difference. First operand 492 states. Second operand 3 states. [2020-11-28 07:37:48,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:37:48,369 INFO L93 Difference]: Finished difference Result 480 states and 1245 transitions. [2020-11-28 07:37:48,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:37:48,371 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-11-28 07:37:48,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:37:48,385 INFO L225 Difference]: With dead ends: 480 [2020-11-28 07:37:48,385 INFO L226 Difference]: Without dead ends: 250 [2020-11-28 07:37:48,386 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 [2020-11-28 07:37:48,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-11-28 07:37:48,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 250. [2020-11-28 07:37:48,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-11-28 07:37:48,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 622 transitions. [2020-11-28 07:37:48,475 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 622 transitions. Word has length 8 [2020-11-28 07:37:48,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:37:48,476 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 622 transitions. [2020-11-28 07:37:48,476 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:37:48,476 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 622 transitions. [2020-11-28 07:37:48,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 07:37:48,478 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:37:48,478 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:37:48,478 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:37:48,478 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:37:48,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:37:48,479 INFO L82 PathProgramCache]: Analyzing trace with hash -1152860627, now seen corresponding path program 1 times [2020-11-28 07:37:48,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:37:48,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548660344] [2020-11-28 07:37:48,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:37:48,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:37:48,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:37:48,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548660344] [2020-11-28 07:37:48,602 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:37:48,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:37:48,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811140741] [2020-11-28 07:37:48,603 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:37:48,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:37:48,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:37:48,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:37:48,604 INFO L87 Difference]: Start difference. First operand 250 states and 622 transitions. Second operand 3 states. [2020-11-28 07:37:48,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:37:48,633 INFO L93 Difference]: Finished difference Result 142 states and 253 transitions. [2020-11-28 07:37:48,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:37:48,638 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-11-28 07:37:48,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:37:48,639 INFO L225 Difference]: With dead ends: 142 [2020-11-28 07:37:48,640 INFO L226 Difference]: Without dead ends: 140 [2020-11-28 07:37:48,640 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:37:48,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-11-28 07:37:48,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2020-11-28 07:37:48,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-11-28 07:37:48,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 250 transitions. [2020-11-28 07:37:48,651 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 250 transitions. Word has length 10 [2020-11-28 07:37:48,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:37:48,651 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 250 transitions. [2020-11-28 07:37:48,651 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:37:48,651 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 250 transitions. [2020-11-28 07:37:48,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 07:37:48,652 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:37:48,652 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:37:48,653 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 07:37:48,653 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:37:48,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:37:48,654 INFO L82 PathProgramCache]: Analyzing trace with hash -1378923444, now seen corresponding path program 1 times [2020-11-28 07:37:48,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:37:48,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704145075] [2020-11-28 07:37:48,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:37:48,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:37:48,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:37:48,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704145075] [2020-11-28 07:37:48,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:37:48,791 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:37:48,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143946835] [2020-11-28 07:37:48,791 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:37:48,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:37:48,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:37:48,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:37:48,792 INFO L87 Difference]: Start difference. First operand 140 states and 250 transitions. Second operand 4 states. [2020-11-28 07:37:48,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:37:48,820 INFO L93 Difference]: Finished difference Result 135 states and 241 transitions. [2020-11-28 07:37:48,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:37:48,822 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-28 07:37:48,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:37:48,824 INFO L225 Difference]: With dead ends: 135 [2020-11-28 07:37:48,824 INFO L226 Difference]: Without dead ends: 130 [2020-11-28 07:37:48,824 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:37:48,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-11-28 07:37:48,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2020-11-28 07:37:48,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-11-28 07:37:48,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 232 transitions. [2020-11-28 07:37:48,840 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 232 transitions. Word has length 11 [2020-11-28 07:37:48,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:37:48,840 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 232 transitions. [2020-11-28 07:37:48,840 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:37:48,840 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 232 transitions. [2020-11-28 07:37:48,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 07:37:48,844 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:37:48,844 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:37:48,845 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 07:37:48,845 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:37:48,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:37:48,847 INFO L82 PathProgramCache]: Analyzing trace with hash 768940541, now seen corresponding path program 1 times [2020-11-28 07:37:48,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:37:48,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234084388] [2020-11-28 07:37:48,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:37:48,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:37:48,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:37:48,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234084388] [2020-11-28 07:37:48,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:37:48,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:37:48,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508482379] [2020-11-28 07:37:48,937 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:37:48,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:37:48,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:37:48,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:37:48,938 INFO L87 Difference]: Start difference. First operand 130 states and 232 transitions. Second operand 5 states. [2020-11-28 07:37:48,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:37:48,979 INFO L93 Difference]: Finished difference Result 125 states and 223 transitions. [2020-11-28 07:37:48,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:37:48,979 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-28 07:37:48,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:37:48,980 INFO L225 Difference]: With dead ends: 125 [2020-11-28 07:37:48,980 INFO L226 Difference]: Without dead ends: 120 [2020-11-28 07:37:48,981 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:37:48,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-11-28 07:37:48,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2020-11-28 07:37:48,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-11-28 07:37:48,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 214 transitions. [2020-11-28 07:37:48,986 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 214 transitions. Word has length 12 [2020-11-28 07:37:48,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:37:48,987 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 214 transitions. [2020-11-28 07:37:48,987 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:37:48,987 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 214 transitions. [2020-11-28 07:37:48,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-28 07:37:48,988 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:37:48,988 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:37:48,988 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 07:37:48,988 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:37:48,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:37:48,989 INFO L82 PathProgramCache]: Analyzing trace with hash 1926839561, now seen corresponding path program 1 times [2020-11-28 07:37:48,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:37:48,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163380132] [2020-11-28 07:37:48,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:37:49,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:37:49,021 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:37:49,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:37:49,046 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:37:49,072 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-28 07:37:49,072 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 07:37:49,072 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 07:37:49,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:37:49 BasicIcfg [2020-11-28 07:37:49,109 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:37:49,110 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:37:49,110 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:37:49,110 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:37:49,110 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:37:44" (3/4) ... [2020-11-28 07:37:49,112 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 07:37:49,163 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_57ff0c9d-a332-4523-8e62-34434f3273f6/bin/utaipan/witness.graphml [2020-11-28 07:37:49,164 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:37:49,165 INFO L168 Benchmark]: Toolchain (without parser) took 5900.91 ms. Allocated memory was 79.7 MB in the beginning and 117.4 MB in the end (delta: 37.7 MB). Free memory was 46.9 MB in the beginning and 46.7 MB in the end (delta: 163.7 kB). Peak memory consumption was 36.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:49,166 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 79.7 MB. Free memory was 38.9 MB in the beginning and 38.8 MB in the end (delta: 35.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:37:49,167 INFO L168 Benchmark]: CACSL2BoogieTranslator took 591.57 ms. Allocated memory is still 79.7 MB. Free memory was 46.6 MB in the beginning and 38.2 MB in the end (delta: 8.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:49,167 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.76 ms. Allocated memory is still 79.7 MB. Free memory was 38.2 MB in the beginning and 36.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:49,168 INFO L168 Benchmark]: Boogie Preprocessor took 41.34 ms. Allocated memory is still 79.7 MB. Free memory was 36.4 MB in the beginning and 35.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:49,169 INFO L168 Benchmark]: RCFGBuilder took 620.02 ms. Allocated memory was 79.7 MB in the beginning and 96.5 MB in the end (delta: 16.8 MB). Free memory was 35.0 MB in the beginning and 56.8 MB in the end (delta: -21.9 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:49,169 INFO L168 Benchmark]: TraceAbstraction took 4525.56 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 56.2 MB in the beginning and 50.9 MB in the end (delta: 5.3 MB). Peak memory consumption was 24.8 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:49,170 INFO L168 Benchmark]: Witness Printer took 54.12 ms. Allocated memory is still 117.4 MB. Free memory was 50.9 MB in the beginning and 46.7 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:49,174 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 79.7 MB. Free memory was 38.9 MB in the beginning and 38.8 MB in the end (delta: 35.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 591.57 ms. Allocated memory is still 79.7 MB. Free memory was 46.6 MB in the beginning and 38.2 MB in the end (delta: 8.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 60.76 ms. Allocated memory is still 79.7 MB. Free memory was 38.2 MB in the beginning and 36.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 41.34 ms. Allocated memory is still 79.7 MB. Free memory was 36.4 MB in the beginning and 35.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 620.02 ms. Allocated memory was 79.7 MB in the beginning and 96.5 MB in the end (delta: 16.8 MB). Free memory was 35.0 MB in the beginning and 56.8 MB in the end (delta: -21.9 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4525.56 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 56.2 MB in the beginning and 50.9 MB in the end (delta: 5.3 MB). Peak memory consumption was 24.8 MB. Max. memory is 16.1 GB. * Witness Printer took 54.12 ms. Allocated memory is still 117.4 MB. Free memory was 50.9 MB in the beginning and 46.7 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1098 VarBasedMoverChecksPositive, 69 VarBasedMoverChecksNegative, 38 SemBasedMoverChecksPositive, 31 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 261 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.1s, 89 PlacesBefore, 40 PlacesAfterwards, 87 TransitionsBefore, 37 TransitionsAfterwards, 1376 CoEnabledTransitionPairs, 6 FixpointIterations, 28 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 1 ChoiceCompositions, 63 TotalNumberOfCompositions, 6004 MoverChecksTotal - CounterExampleResult [Line: 20]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L702] 0 pthread_mutex_t mutex; [L703] 0 int data = 0; [L731] 0 pthread_t t1, t2, t3; [L732] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [arg={0:0}, data=0, mutex={10:0}] [L733] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [arg={0:0}, arg={0:0}, data=0, mutex={10:0}] [L714] 2 data+=2 VAL [arg={0:0}, arg={0:0}, arg={0:0}, data=2, mutex={10:0}] [L734] FCALL, FORK 0 pthread_create(&t3, 0, thread3, 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, data=2, mutex={10:0}] [L716] 2 return 0; [L707] 1 data++ VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={10:0}] [L709] 1 return 0; [L721] COND TRUE 3 data >= 3 [L20] COND FALSE 3 !(0) [L20] 3 __assert_fail ("0", "lazy01.c", 3, __extension__ __PRETTY_FUNCTION__) VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={10:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 80 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.3s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.2s, HoareTripleCheckerStatistics: 117 SDtfs, 59 SDslu, 135 SDs, 0 SdLazy, 37 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=492occurred 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: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 56 NumberOfCodeBlocks, 56 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 37 ConstructedInterpolants, 0 QuantifiedInterpolants, 1107 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...