./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-ext/18_read_write_lock.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_c20b9360-311b-4ae9-b1b4-d3a04b46e499/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_c20b9360-311b-4ae9-b1b4-d3a04b46e499/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c20b9360-311b-4ae9-b1b4-d3a04b46e499/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c20b9360-311b-4ae9-b1b4-d3a04b46e499/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-ext/18_read_write_lock.i -s /tmp/vcloud-vcloud-master/worker/run_dir_c20b9360-311b-4ae9-b1b4-d3a04b46e499/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c20b9360-311b-4ae9-b1b4-d3a04b46e499/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 11d3061d436882c8b142ecba28963b9473be55d7 ........................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:41:36,550 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:41:36,553 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:41:36,591 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:41:36,592 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:41:36,594 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:41:36,596 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:41:36,599 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:41:36,602 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:41:36,603 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:41:36,605 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:41:36,607 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:41:36,607 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:41:36,609 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:41:36,611 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:41:36,613 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:41:36,614 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:41:36,616 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:41:36,619 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:41:36,622 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:41:36,624 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:41:36,626 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:41:36,628 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:41:36,629 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:41:36,634 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:41:36,634 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:41:36,635 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:41:36,636 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:41:36,637 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:41:36,639 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:41:36,639 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:41:36,641 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:41:36,642 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:41:36,643 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:41:36,645 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:41:36,646 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:41:36,647 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:41:36,648 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:41:36,648 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:41:36,650 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:41:36,651 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:41:36,652 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c20b9360-311b-4ae9-b1b4-d3a04b46e499/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:41:36,700 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:41:36,701 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:41:36,702 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:41:36,702 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:41:36,702 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:41:36,702 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:41:36,703 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:41:36,703 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:41:36,703 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:41:36,704 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:41:36,704 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:41:36,704 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:41:36,704 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:41:36,705 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:41:36,705 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:41:36,706 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:41:36,706 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:41:36,707 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:41:36,707 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:41:36,707 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:41:36,707 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:41:36,708 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:41:36,708 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:41:36,708 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:41:36,709 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:41:36,709 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:41:36,709 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:41:36,709 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:41:36,710 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:41:36,710 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:41:36,710 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:41:36,711 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:41:36,711 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:41:36,711 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:41:36,711 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:41:36,712 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:41:36,712 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:41:36,712 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:41:36,713 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:41:36,713 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:41:36,713 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_c20b9360-311b-4ae9-b1b4-d3a04b46e499/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_c20b9360-311b-4ae9-b1b4-d3a04b46e499/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 11d3061d436882c8b142ecba28963b9473be55d7 [2020-11-28 07:41:37,068 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:41:37,113 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:41:37,116 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:41:37,120 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:41:37,121 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:41:37,122 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c20b9360-311b-4ae9-b1b4-d3a04b46e499/bin/utaipan/../../sv-benchmarks/c/pthread-ext/18_read_write_lock.i [2020-11-28 07:41:37,246 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c20b9360-311b-4ae9-b1b4-d3a04b46e499/bin/utaipan/data/4dd92d6b1/d1fa6db9a60e42ff8eece5af4f8e545b/FLAG751ebb89b [2020-11-28 07:41:37,964 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:41:37,964 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c20b9360-311b-4ae9-b1b4-d3a04b46e499/sv-benchmarks/c/pthread-ext/18_read_write_lock.i [2020-11-28 07:41:37,997 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c20b9360-311b-4ae9-b1b4-d3a04b46e499/bin/utaipan/data/4dd92d6b1/d1fa6db9a60e42ff8eece5af4f8e545b/FLAG751ebb89b [2020-11-28 07:41:38,240 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c20b9360-311b-4ae9-b1b4-d3a04b46e499/bin/utaipan/data/4dd92d6b1/d1fa6db9a60e42ff8eece5af4f8e545b [2020-11-28 07:41:38,243 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:41:38,245 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:41:38,247 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:41:38,247 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:41:38,251 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:41:38,252 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:41:38" (1/1) ... [2020-11-28 07:41:38,254 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7985ed8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:38, skipping insertion in model container [2020-11-28 07:41:38,254 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:41:38" (1/1) ... [2020-11-28 07:41:38,269 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:41:38,325 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:41:38,518 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-11-28 07:41:38,681 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:41:38,690 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:41:38,725 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-11-28 07:41:38,752 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:41:38,840 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:41:38,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:38 WrapperNode [2020-11-28 07:41:38,840 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:41:38,842 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:41:38,842 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:41:38,842 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:41:38,852 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:38" (1/1) ... [2020-11-28 07:41:38,880 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:38" (1/1) ... [2020-11-28 07:41:38,902 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:41:38,903 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:41:38,903 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:41:38,903 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:41:38,912 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:38" (1/1) ... [2020-11-28 07:41:38,912 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:38" (1/1) ... [2020-11-28 07:41:38,915 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:38" (1/1) ... [2020-11-28 07:41:38,916 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:38" (1/1) ... [2020-11-28 07:41:38,922 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:38" (1/1) ... [2020-11-28 07:41:38,924 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:38" (1/1) ... [2020-11-28 07:41:38,926 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:38" (1/1) ... [2020-11-28 07:41:38,929 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:41:38,930 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:41:38,931 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:41:38,931 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:41:38,932 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:38" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c20b9360-311b-4ae9-b1b4-d3a04b46e499/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 07:41:38,997 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-11-28 07:41:38,997 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-11-28 07:41:38,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 07:41:38,998 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-28 07:41:38,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:41:38,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 07:41:38,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:41:38,998 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-28 07:41:38,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:41:38,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:41:39,000 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 07:41:39,619 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:41:39,619 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-11-28 07:41:39,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:41:39 BoogieIcfgContainer [2020-11-28 07:41:39,621 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:41:39,623 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:41:39,623 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:41:39,627 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:41:39,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:41:38" (1/3) ... [2020-11-28 07:41:39,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f50e934 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:41:39, skipping insertion in model container [2020-11-28 07:41:39,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:38" (2/3) ... [2020-11-28 07:41:39,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f50e934 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:41:39, skipping insertion in model container [2020-11-28 07:41:39,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:41:39" (3/3) ... [2020-11-28 07:41:39,630 INFO L111 eAbstractionObserver]: Analyzing ICFG 18_read_write_lock.i [2020-11-28 07:41:39,641 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-28 07:41:39,641 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:41:39,645 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:41:39,645 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-28 07:41:39,664 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:41:39,664 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:41:39,664 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:41:39,664 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:41:39,664 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:41:39,665 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:41:39,665 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:41:39,665 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:41:39,667 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:41:39,668 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:41:39,668 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:41:39,668 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:41:39,668 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:41:39,669 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:41:39,672 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-28 07:41:39,682 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-28 07:41:39,700 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:41:39,700 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:41:39,700 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:41:39,700 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:41:39,700 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:41:39,701 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:41:39,701 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:41:39,701 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:41:39,711 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-28 07:41:39,713 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 54 places, 52 transitions, 109 flow [2020-11-28 07:41:39,716 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 54 places, 52 transitions, 109 flow [2020-11-28 07:41:39,718 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 54 places, 52 transitions, 109 flow [2020-11-28 07:41:39,749 INFO L129 PetriNetUnfolder]: 2/51 cut-off events. [2020-11-28 07:41:39,749 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-28 07:41:39,752 INFO L80 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 51 events. 2/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 27 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 35. Up to 2 conditions per place. [2020-11-28 07:41:39,754 INFO L116 LiptonReduction]: Number of co-enabled transitions 348 [2020-11-28 07:41:41,545 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2020-11-28 07:41:41,888 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 68 [2020-11-28 07:41:42,025 INFO L131 LiptonReduction]: Checked pairs total: 552 [2020-11-28 07:41:42,025 INFO L133 LiptonReduction]: Total number of compositions: 54 [2020-11-28 07:41:42,032 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 14 places, 11 transitions, 27 flow [2020-11-28 07:41:42,041 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 20 states. [2020-11-28 07:41:42,043 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-11-28 07:41:42,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-28 07:41:42,049 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:41:42,049 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-28 07:41:42,050 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:41:42,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:41:42,057 INFO L82 PathProgramCache]: Analyzing trace with hash 258962646, now seen corresponding path program 1 times [2020-11-28 07:41:42,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:41:42,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636522105] [2020-11-28 07:41:42,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:41:42,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:41:42,298 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 07:41:42,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636522105] [2020-11-28 07:41:42,300 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:41:42,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:41:42,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357869237] [2020-11-28 07:41:42,306 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:41:42,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:41:42,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:41:42,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:41:42,329 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 3 states. [2020-11-28 07:41:42,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:41:42,360 INFO L93 Difference]: Finished difference Result 21 states and 27 transitions. [2020-11-28 07:41:42,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:41:42,362 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-11-28 07:41:42,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:41:42,371 INFO L225 Difference]: With dead ends: 21 [2020-11-28 07:41:42,371 INFO L226 Difference]: Without dead ends: 10 [2020-11-28 07:41:42,372 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 07:41:42,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-11-28 07:41:42,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-11-28 07:41:42,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-11-28 07:41:42,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2020-11-28 07:41:42,407 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 5 [2020-11-28 07:41:42,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:41:42,408 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2020-11-28 07:41:42,408 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:41:42,409 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2020-11-28 07:41:42,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 07:41:42,409 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:41:42,409 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:41:42,410 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:41:42,410 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:41:42,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:41:42,411 INFO L82 PathProgramCache]: Analyzing trace with hash -278625078, now seen corresponding path program 1 times [2020-11-28 07:41:42,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:41:42,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62978711] [2020-11-28 07:41:42,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:41:42,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:41:42,482 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 07:41:42,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62978711] [2020-11-28 07:41:42,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:41:42,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:41:42,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636830635] [2020-11-28 07:41:42,484 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:41:42,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:41:42,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:41:42,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:41:42,486 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand 3 states. [2020-11-28 07:41:42,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:41:42,498 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2020-11-28 07:41:42,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:41:42,499 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-11-28 07:41:42,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:41:42,500 INFO L225 Difference]: With dead ends: 10 [2020-11-28 07:41:42,500 INFO L226 Difference]: Without dead ends: 9 [2020-11-28 07:41:42,501 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 07:41:42,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-11-28 07:41:42,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-11-28 07:41:42,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-11-28 07:41:42,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2020-11-28 07:41:42,503 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2020-11-28 07:41:42,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:41:42,504 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2020-11-28 07:41:42,504 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:41:42,504 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2020-11-28 07:41:42,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 07:41:42,505 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:41:42,505 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:41:42,505 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 07:41:42,505 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:41:42,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:41:42,506 INFO L82 PathProgramCache]: Analyzing trace with hash -245557068, now seen corresponding path program 2 times [2020-11-28 07:41:42,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:41:42,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951365840] [2020-11-28 07:41:42,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:41:42,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:41:42,620 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 07:41:42,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951365840] [2020-11-28 07:41:42,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:41:42,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:41:42,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35042012] [2020-11-28 07:41:42,622 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:41:42,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:41:42,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:41:42,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:41:42,623 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 4 states. [2020-11-28 07:41:42,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:41:42,631 INFO L93 Difference]: Finished difference Result 5 states and 4 transitions. [2020-11-28 07:41:42,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:41:42,632 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-28 07:41:42,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:41:42,632 INFO L225 Difference]: With dead ends: 5 [2020-11-28 07:41:42,632 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 07:41:42,633 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:41:42,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 07:41:42,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 07:41:42,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 07:41:42,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 07:41:42,634 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2020-11-28 07:41:42,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:41:42,634 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 07:41:42,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:41:42,634 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 07:41:42,634 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 07:41:42,635 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 07:41:42,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:41:42 BasicIcfg [2020-11-28 07:41:42,639 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:41:42,639 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:41:42,640 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:41:42,640 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:41:42,641 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:41:39" (3/4) ... [2020-11-28 07:41:42,644 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 07:41:42,651 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2020-11-28 07:41:42,657 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2020-11-28 07:41:42,657 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-11-28 07:41:42,658 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 07:41:42,658 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 07:41:42,725 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_c20b9360-311b-4ae9-b1b4-d3a04b46e499/bin/utaipan/witness.graphml [2020-11-28 07:41:42,725 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:41:42,727 INFO L168 Benchmark]: Toolchain (without parser) took 4481.54 ms. Allocated memory was 83.9 MB in the beginning and 123.7 MB in the end (delta: 39.8 MB). Free memory was 43.2 MB in the beginning and 63.3 MB in the end (delta: -20.0 MB). Peak memory consumption was 20.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:41:42,728 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 83.9 MB. Free memory is still 60.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:41:42,728 INFO L168 Benchmark]: CACSL2BoogieTranslator took 594.24 ms. Allocated memory was 83.9 MB in the beginning and 102.8 MB in the end (delta: 18.9 MB). Free memory was 43.0 MB in the beginning and 55.3 MB in the end (delta: -12.2 MB). Peak memory consumption was 9.3 MB. Max. memory is 16.1 GB. [2020-11-28 07:41:42,729 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.14 ms. Allocated memory is still 102.8 MB. Free memory was 55.3 MB in the beginning and 53.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:41:42,730 INFO L168 Benchmark]: Boogie Preprocessor took 27.02 ms. Allocated memory is still 102.8 MB. Free memory was 53.2 MB in the beginning and 51.9 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:41:42,730 INFO L168 Benchmark]: RCFGBuilder took 690.66 ms. Allocated memory is still 102.8 MB. Free memory was 51.9 MB in the beginning and 62.1 MB in the end (delta: -10.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:41:42,731 INFO L168 Benchmark]: TraceAbstraction took 3016.25 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 61.7 MB in the beginning and 66.4 MB in the end (delta: -4.7 MB). Peak memory consumption was 17.7 MB. Max. memory is 16.1 GB. [2020-11-28 07:41:42,731 INFO L168 Benchmark]: Witness Printer took 86.13 ms. Allocated memory is still 123.7 MB. Free memory was 66.4 MB in the beginning and 63.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:41:42,735 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 83.9 MB. Free memory is still 60.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 594.24 ms. Allocated memory was 83.9 MB in the beginning and 102.8 MB in the end (delta: 18.9 MB). Free memory was 43.0 MB in the beginning and 55.3 MB in the end (delta: -12.2 MB). Peak memory consumption was 9.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 60.14 ms. Allocated memory is still 102.8 MB. Free memory was 55.3 MB in the beginning and 53.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.02 ms. Allocated memory is still 102.8 MB. Free memory was 53.2 MB in the beginning and 51.9 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 690.66 ms. Allocated memory is still 102.8 MB. Free memory was 51.9 MB in the beginning and 62.1 MB in the end (delta: -10.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3016.25 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 61.7 MB in the beginning and 66.4 MB in the end (delta: -4.7 MB). Peak memory consumption was 17.7 MB. Max. memory is 16.1 GB. * Witness Printer took 86.13 ms. Allocated memory is still 123.7 MB. Free memory was 66.4 MB in the beginning and 63.3 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 236 VarBasedMoverChecksPositive, 26 VarBasedMoverChecksNegative, 3 SemBasedMoverChecksPositive, 23 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 16 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.3s, 54 PlacesBefore, 14 PlacesAfterwards, 52 TransitionsBefore, 11 TransitionsAfterwards, 348 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 31 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 54 TotalNumberOfCompositions, 552 MoverChecksTotal - PositiveResult [Line: 16]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.9s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.3s, HoareTripleCheckerStatistics: 18 SDtfs, 7 SDslu, 7 SDs, 0 SdLazy, 11 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 144 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...