./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe006_pso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_53968732-00a3-44b4-87bd-56c825fdf6da/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_53968732-00a3-44b4-87bd-56c825fdf6da/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_53968732-00a3-44b4-87bd-56c825fdf6da/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_53968732-00a3-44b4-87bd-56c825fdf6da/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe006_pso.opt.i -s /tmp/vcloud-vcloud-master/worker/run_dir_53968732-00a3-44b4-87bd-56c825fdf6da/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_53968732-00a3-44b4-87bd-56c825fdf6da/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c37917ee71e4850f940b91674aa6289cea575316 .......................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-26 02:26:56,266 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:26:56,268 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:26:56,278 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:26:56,278 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:26:56,279 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:26:56,281 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:26:56,283 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:26:56,284 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:26:56,285 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:26:56,286 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:26:56,287 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:26:56,288 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:26:56,289 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:26:56,290 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:26:56,291 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:26:56,291 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:26:56,292 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:26:56,294 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:26:56,296 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:26:56,297 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:26:56,298 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:26:56,299 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:26:56,300 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:26:56,303 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:26:56,303 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:26:56,303 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:26:56,304 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:26:56,304 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:26:56,305 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:26:56,306 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:26:56,306 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:26:56,307 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:26:56,308 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:26:56,309 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:26:56,309 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:26:56,309 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:26:56,310 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:26:56,310 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:26:56,311 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:26:56,311 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:26:56,312 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_53968732-00a3-44b4-87bd-56c825fdf6da/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-26 02:26:56,325 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:26:56,326 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:26:56,326 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:26:56,326 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:26:56,327 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:26:56,327 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:26:56,327 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 02:26:56,327 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:26:56,327 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:26:56,328 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 02:26:56,328 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 02:26:56,328 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:26:56,328 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 02:26:56,329 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 02:26:56,329 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 02:26:56,329 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:26:56,330 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:26:56,330 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:26:56,330 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:26:56,330 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:26:56,331 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:26:56,331 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:26:56,331 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:26:56,331 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:26:56,331 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:26:56,332 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:26:56,332 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:26:56,332 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:26:56,332 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:26:56,332 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:26:56,333 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:26:56,333 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:26:56,333 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:26:56,333 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 02:26:56,334 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 02:26:56,334 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:26:56,334 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:26:56,334 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_53968732-00a3-44b4-87bd-56c825fdf6da/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(__VERIFIER_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 -> c37917ee71e4850f940b91674aa6289cea575316 [2019-11-26 02:26:56,469 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:26:56,478 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:26:56,481 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:26:56,482 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:26:56,483 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:26:56,484 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_53968732-00a3-44b4-87bd-56c825fdf6da/bin/utaipan/../../sv-benchmarks/c/pthread-wmm/safe006_pso.opt.i [2019-11-26 02:26:56,533 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_53968732-00a3-44b4-87bd-56c825fdf6da/bin/utaipan/data/0f929b965/9d21ee21534b4329a621e3b9ca38ece3/FLAG0fca88b75 [2019-11-26 02:26:57,002 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:26:57,010 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_53968732-00a3-44b4-87bd-56c825fdf6da/sv-benchmarks/c/pthread-wmm/safe006_pso.opt.i [2019-11-26 02:26:57,032 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_53968732-00a3-44b4-87bd-56c825fdf6da/bin/utaipan/data/0f929b965/9d21ee21534b4329a621e3b9ca38ece3/FLAG0fca88b75 [2019-11-26 02:26:57,514 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_53968732-00a3-44b4-87bd-56c825fdf6da/bin/utaipan/data/0f929b965/9d21ee21534b4329a621e3b9ca38ece3 [2019-11-26 02:26:57,517 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:26:57,518 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:26:57,519 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:26:57,520 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:26:57,523 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:26:57,524 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:26:57" (1/1) ... [2019-11-26 02:26:57,526 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1de307c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:26:57, skipping insertion in model container [2019-11-26 02:26:57,526 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:26:57" (1/1) ... [2019-11-26 02:26:57,533 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:26:57,582 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:26:58,027 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:26:58,041 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:26:58,115 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:26:58,178 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:26:58,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:26:58 WrapperNode [2019-11-26 02:26:58,178 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:26:58,179 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:26:58,179 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:26:58,179 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:26:58,186 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:26:58" (1/1) ... [2019-11-26 02:26:58,198 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:26:58" (1/1) ... [2019-11-26 02:26:58,214 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:26:58,215 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:26:58,215 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:26:58,215 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:26:58,222 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:26:58" (1/1) ... [2019-11-26 02:26:58,222 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:26:58" (1/1) ... [2019-11-26 02:26:58,225 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:26:58" (1/1) ... [2019-11-26 02:26:58,225 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:26:58" (1/1) ... [2019-11-26 02:26:58,230 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:26:58" (1/1) ... [2019-11-26 02:26:58,233 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:26:58" (1/1) ... [2019-11-26 02:26:58,234 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:26:58" (1/1) ... [2019-11-26 02:26:58,237 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:26:58,237 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:26:58,238 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:26:58,238 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:26:58,239 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:26:58" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_53968732-00a3-44b4-87bd-56c825fdf6da/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 [2019-11-26 02:26:58,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-26 02:26:58,292 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-11-26 02:26:58,293 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-26 02:26:58,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-26 02:26:58,293 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-11-26 02:26:58,293 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-11-26 02:26:58,293 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-11-26 02:26:58,294 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-11-26 02:26:58,294 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-11-26 02:26:58,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:26:58,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:26:58,296 WARN L202 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-11-26 02:26:58,548 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:26:58,549 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-26 02:26:58,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:26:58 BoogieIcfgContainer [2019-11-26 02:26:58,550 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:26:58,551 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:26:58,551 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:26:58,559 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:26:58,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:26:57" (1/3) ... [2019-11-26 02:26:58,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@350bf2dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:26:58, skipping insertion in model container [2019-11-26 02:26:58,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:26:58" (2/3) ... [2019-11-26 02:26:58,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@350bf2dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:26:58, skipping insertion in model container [2019-11-26 02:26:58,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:26:58" (3/3) ... [2019-11-26 02:26:58,566 INFO L109 eAbstractionObserver]: Analyzing ICFG safe006_pso.opt.i [2019-11-26 02:26:58,604 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:26:58,605 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:26:58,605 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:26:58,605 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:26:58,606 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:26:58,606 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:26:58,606 WARN L315 ript$VariableManager]: TermVariabe |P0Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:26:58,606 WARN L315 ript$VariableManager]: TermVariabe |P0Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:26:58,607 WARN L315 ript$VariableManager]: TermVariabe P0Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:26:58,607 WARN L315 ript$VariableManager]: TermVariabe P0Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:26:58,607 WARN L315 ript$VariableManager]: TermVariabe |P0Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:26:58,607 WARN L315 ript$VariableManager]: TermVariabe |P0Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:26:58,608 WARN L315 ript$VariableManager]: TermVariabe |P0Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:26:58,608 WARN L315 ript$VariableManager]: TermVariabe |P0Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:26:58,608 WARN L315 ript$VariableManager]: TermVariabe P0Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:26:58,608 WARN L315 ript$VariableManager]: TermVariabe P0Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:26:58,608 WARN L315 ript$VariableManager]: TermVariabe |P0Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:26:58,609 WARN L315 ript$VariableManager]: TermVariabe |P0Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:26:58,609 WARN L315 ript$VariableManager]: TermVariabe |P1Thread2of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:26:58,609 WARN L315 ript$VariableManager]: TermVariabe |P1Thread2of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:26:58,610 WARN L315 ript$VariableManager]: TermVariabe P1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:26:58,610 WARN L315 ript$VariableManager]: TermVariabe P1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:26:58,610 WARN L315 ript$VariableManager]: TermVariabe |P1Thread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:26:58,610 WARN L315 ript$VariableManager]: TermVariabe |P1Thread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:26:58,611 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:26:58,611 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:26:58,611 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:26:58,611 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:26:58,611 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:26:58,612 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:26:58,612 WARN L315 ript$VariableManager]: TermVariabe |P1Thread3of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:26:58,612 WARN L315 ript$VariableManager]: TermVariabe |P1Thread3of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:26:58,612 WARN L315 ript$VariableManager]: TermVariabe P1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:26:58,613 WARN L315 ript$VariableManager]: TermVariabe P1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:26:58,613 WARN L315 ript$VariableManager]: TermVariabe |P1Thread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:26:58,613 WARN L315 ript$VariableManager]: TermVariabe |P1Thread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:26:58,651 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-26 02:26:58,652 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:26:58,657 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:26:58,667 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:26:58,686 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:26:58,686 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:26:58,686 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:26:58,687 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:26:58,687 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:26:58,687 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:26:58,687 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:26:58,687 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:26:58,703 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 71 places, 57 transitions [2019-11-26 02:26:58,757 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 287 states. [2019-11-26 02:26:58,759 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states. [2019-11-26 02:26:58,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-11-26 02:26:58,769 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:26:58,770 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:26:58,770 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:26:58,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:26:58,775 INFO L82 PathProgramCache]: Analyzing trace with hash -410351249, now seen corresponding path program 1 times [2019-11-26 02:26:58,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:26:58,783 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403826305] [2019-11-26 02:26:58,784 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:26:58,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:26:59,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:26:59,076 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403826305] [2019-11-26 02:26:59,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:26:59,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-26 02:26:59,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317922996] [2019-11-26 02:26:59,083 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-26 02:26:59,083 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:26:59,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-26 02:26:59,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:26:59,099 INFO L87 Difference]: Start difference. First operand 287 states. Second operand 4 states. [2019-11-26 02:26:59,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:26:59,169 INFO L93 Difference]: Finished difference Result 288 states and 647 transitions. [2019-11-26 02:26:59,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-26 02:26:59,174 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2019-11-26 02:26:59,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:26:59,187 INFO L225 Difference]: With dead ends: 288 [2019-11-26 02:26:59,187 INFO L226 Difference]: Without dead ends: 152 [2019-11-26 02:26:59,188 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-26 02:26:59,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2019-11-26 02:26:59,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2019-11-26 02:26:59,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2019-11-26 02:26:59,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 326 transitions. [2019-11-26 02:26:59,234 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 326 transitions. Word has length 26 [2019-11-26 02:26:59,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:26:59,234 INFO L462 AbstractCegarLoop]: Abstraction has 152 states and 326 transitions. [2019-11-26 02:26:59,235 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-26 02:26:59,235 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 326 transitions. [2019-11-26 02:26:59,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-11-26 02:26:59,237 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:26:59,237 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:26:59,237 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:26:59,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:26:59,238 INFO L82 PathProgramCache]: Analyzing trace with hash 1300883899, now seen corresponding path program 1 times [2019-11-26 02:26:59,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:26:59,238 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98071619] [2019-11-26 02:26:59,238 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:26:59,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:26:59,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:26:59,353 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98071619] [2019-11-26 02:26:59,354 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:26:59,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-26 02:26:59,354 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335933024] [2019-11-26 02:26:59,355 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-26 02:26:59,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:26:59,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-26 02:26:59,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-26 02:26:59,356 INFO L87 Difference]: Start difference. First operand 152 states and 326 transitions. Second operand 5 states. [2019-11-26 02:26:59,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:26:59,437 INFO L93 Difference]: Finished difference Result 125 states and 242 transitions. [2019-11-26 02:26:59,440 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-26 02:26:59,440 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2019-11-26 02:26:59,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:26:59,442 INFO L225 Difference]: With dead ends: 125 [2019-11-26 02:26:59,442 INFO L226 Difference]: Without dead ends: 110 [2019-11-26 02:26:59,443 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-26 02:26:59,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2019-11-26 02:26:59,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2019-11-26 02:26:59,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2019-11-26 02:26:59,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 214 transitions. [2019-11-26 02:26:59,462 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 214 transitions. Word has length 27 [2019-11-26 02:26:59,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:26:59,463 INFO L462 AbstractCegarLoop]: Abstraction has 110 states and 214 transitions. [2019-11-26 02:26:59,463 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-26 02:26:59,463 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 214 transitions. [2019-11-26 02:26:59,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-11-26 02:26:59,469 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:26:59,469 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:26:59,470 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:26:59,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:26:59,471 INFO L82 PathProgramCache]: Analyzing trace with hash 707336749, now seen corresponding path program 1 times [2019-11-26 02:26:59,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:26:59,471 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950814208] [2019-11-26 02:26:59,471 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:26:59,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:26:59,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:26:59,625 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950814208] [2019-11-26 02:26:59,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:26:59,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-26 02:26:59,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508618204] [2019-11-26 02:26:59,626 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-26 02:26:59,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:26:59,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-26 02:26:59,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-26 02:26:59,626 INFO L87 Difference]: Start difference. First operand 110 states and 214 transitions. Second operand 7 states. [2019-11-26 02:26:59,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:26:59,746 INFO L93 Difference]: Finished difference Result 164 states and 331 transitions. [2019-11-26 02:26:59,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-26 02:26:59,747 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2019-11-26 02:26:59,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:26:59,748 INFO L225 Difference]: With dead ends: 164 [2019-11-26 02:26:59,748 INFO L226 Difference]: Without dead ends: 95 [2019-11-26 02:26:59,749 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2019-11-26 02:26:59,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2019-11-26 02:26:59,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2019-11-26 02:26:59,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2019-11-26 02:26:59,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 184 transitions. [2019-11-26 02:26:59,760 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 184 transitions. Word has length 28 [2019-11-26 02:26:59,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:26:59,760 INFO L462 AbstractCegarLoop]: Abstraction has 95 states and 184 transitions. [2019-11-26 02:26:59,760 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-26 02:26:59,761 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 184 transitions. [2019-11-26 02:26:59,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-11-26 02:26:59,764 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:26:59,765 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:26:59,766 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:26:59,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:26:59,766 INFO L82 PathProgramCache]: Analyzing trace with hash 523853883, now seen corresponding path program 2 times [2019-11-26 02:26:59,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:26:59,768 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327569922] [2019-11-26 02:26:59,768 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:26:59,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:26:59,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:26:59,932 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327569922] [2019-11-26 02:26:59,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:26:59,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-26 02:26:59,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639783] [2019-11-26 02:26:59,933 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-26 02:26:59,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:26:59,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-26 02:26:59,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-11-26 02:26:59,934 INFO L87 Difference]: Start difference. First operand 95 states and 184 transitions. Second operand 8 states. [2019-11-26 02:27:00,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:27:00,036 INFO L93 Difference]: Finished difference Result 77 states and 142 transitions. [2019-11-26 02:27:00,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-26 02:27:00,037 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2019-11-26 02:27:00,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:27:00,037 INFO L225 Difference]: With dead ends: 77 [2019-11-26 02:27:00,037 INFO L226 Difference]: Without dead ends: 0 [2019-11-26 02:27:00,038 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-11-26 02:27:00,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-26 02:27:00,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-26 02:27:00,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-26 02:27:00,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-26 02:27:00,039 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2019-11-26 02:27:00,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:27:00,039 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-26 02:27:00,039 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-26 02:27:00,039 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-26 02:27:00,039 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-26 02:27:00,043 INFO L304 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2019-11-26 02:27:00,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:27:00 BasicIcfg [2019-11-26 02:27:00,049 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:27:00,050 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:27:00,050 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:27:00,051 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:27:00,051 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:26:58" (3/4) ... [2019-11-26 02:27:00,056 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-26 02:27:00,063 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2019-11-26 02:27:00,063 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2019-11-26 02:27:00,069 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2019-11-26 02:27:00,070 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-26 02:27:00,070 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-26 02:27:00,139 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_53968732-00a3-44b4-87bd-56c825fdf6da/bin/utaipan/witness.graphml [2019-11-26 02:27:00,139 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:27:00,141 INFO L168 Benchmark]: Toolchain (without parser) took 2622.06 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 87.0 MB). Free memory was 944.7 MB in the beginning and 897.0 MB in the end (delta: 47.7 MB). Peak memory consumption was 134.7 MB. Max. memory is 11.5 GB. [2019-11-26 02:27:00,141 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:27:00,142 INFO L168 Benchmark]: CACSL2BoogieTranslator took 659.48 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 87.0 MB). Free memory was 944.7 MB in the beginning and 1.0 GB in the end (delta: -102.4 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. [2019-11-26 02:27:00,143 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.29 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:27:00,144 INFO L168 Benchmark]: Boogie Preprocessor took 22.52 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:27:00,147 INFO L168 Benchmark]: RCFGBuilder took 312.92 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 29.5 MB). Peak memory consumption was 29.5 MB. Max. memory is 11.5 GB. [2019-11-26 02:27:00,148 INFO L168 Benchmark]: TraceAbstraction took 1497.66 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 904.1 MB in the end (delta: 113.5 MB). Peak memory consumption was 113.5 MB. Max. memory is 11.5 GB. [2019-11-26 02:27:00,148 INFO L168 Benchmark]: Witness Printer took 89.18 ms. Allocated memory is still 1.1 GB. Free memory was 904.1 MB in the beginning and 897.0 MB in the end (delta: 7.1 MB). Peak memory consumption was 7.1 MB. Max. memory is 11.5 GB. [2019-11-26 02:27:00,155 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 659.48 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 87.0 MB). Free memory was 944.7 MB in the beginning and 1.0 GB in the end (delta: -102.4 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 35.29 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.52 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 312.92 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 29.5 MB). Peak memory consumption was 29.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1497.66 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 904.1 MB in the end (delta: 113.5 MB). Peak memory consumption was 113.5 MB. Max. memory is 11.5 GB. * Witness Printer took 89.18 ms. Allocated memory is still 1.1 GB. Free memory was 904.1 MB in the beginning and 897.0 MB in the end (delta: 7.1 MB). Peak memory consumption was 7.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: 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 9 procedures, 67 locations, 1 error locations. Result: SAFE, OverallTime: 1.3s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 144 SDtfs, 153 SDslu, 353 SDs, 0 SdLazy, 60 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=287occurred 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 109 NumberOfCodeBlocks, 109 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 105 ConstructedInterpolants, 0 QuantifiedInterpolants, 8463 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, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...