./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe015_pso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_b16221e3-3ba1-4331-8093-15178a040c30/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_b16221e3-3ba1-4331-8093-15178a040c30/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b16221e3-3ba1-4331-8093-15178a040c30/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b16221e3-3ba1-4331-8093-15178a040c30/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe015_pso.oepc.i -s /tmp/vcloud-vcloud-master/worker/run_dir_b16221e3-3ba1-4331-8093-15178a040c30/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b16221e3-3ba1-4331-8093-15178a040c30/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 c482f0c7d1af930172d3a8f40cb3ddbd62fee645 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 21:42:46,309 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 21:42:46,310 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 21:42:46,318 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 21:42:46,318 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 21:42:46,319 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 21:42:46,320 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 21:42:46,321 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 21:42:46,322 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 21:42:46,323 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 21:42:46,323 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 21:42:46,324 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 21:42:46,325 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 21:42:46,325 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 21:42:46,326 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 21:42:46,327 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 21:42:46,327 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 21:42:46,328 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 21:42:46,329 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 21:42:46,331 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 21:42:46,332 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 21:42:46,333 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 21:42:46,334 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 21:42:46,334 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 21:42:46,336 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 21:42:46,336 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 21:42:46,336 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 21:42:46,337 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 21:42:46,337 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 21:42:46,338 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 21:42:46,338 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 21:42:46,338 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 21:42:46,339 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 21:42:46,339 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 21:42:46,340 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 21:42:46,340 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 21:42:46,340 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 21:42:46,340 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 21:42:46,340 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 21:42:46,341 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 21:42:46,341 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 21:42:46,342 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b16221e3-3ba1-4331-8093-15178a040c30/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-12-07 21:42:46,352 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 21:42:46,352 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 21:42:46,353 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 21:42:46,353 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 21:42:46,353 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 21:42:46,353 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 21:42:46,353 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 21:42:46,353 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 21:42:46,353 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 21:42:46,354 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 21:42:46,354 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 21:42:46,354 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 21:42:46,354 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 21:42:46,354 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 21:42:46,354 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 21:42:46,355 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 21:42:46,355 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 21:42:46,355 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 21:42:46,355 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 21:42:46,355 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 21:42:46,355 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 21:42:46,355 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 21:42:46,355 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 21:42:46,356 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 21:42:46,356 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 21:42:46,356 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 21:42:46,356 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 21:42:46,356 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 21:42:46,356 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 21:42:46,356 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 21:42:46,357 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 21:42:46,357 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 21:42:46,357 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 21:42:46,357 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 21:42:46,357 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 21:42:46,357 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 21:42:46,357 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 21:42:46,358 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 21:42:46,358 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 21:42:46,358 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 21:42:46,358 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_b16221e3-3ba1-4331-8093-15178a040c30/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 -> c482f0c7d1af930172d3a8f40cb3ddbd62fee645 [2019-12-07 21:42:46,460 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 21:42:46,469 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 21:42:46,472 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 21:42:46,473 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 21:42:46,473 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 21:42:46,474 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b16221e3-3ba1-4331-8093-15178a040c30/bin/utaipan/../../sv-benchmarks/c/pthread-wmm/safe015_pso.oepc.i [2019-12-07 21:42:46,517 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b16221e3-3ba1-4331-8093-15178a040c30/bin/utaipan/data/82296b45e/eb309729d94e4bea92024d33cfd86bb2/FLAG4beb4a7e1 [2019-12-07 21:42:46,897 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 21:42:46,898 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b16221e3-3ba1-4331-8093-15178a040c30/sv-benchmarks/c/pthread-wmm/safe015_pso.oepc.i [2019-12-07 21:42:46,907 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b16221e3-3ba1-4331-8093-15178a040c30/bin/utaipan/data/82296b45e/eb309729d94e4bea92024d33cfd86bb2/FLAG4beb4a7e1 [2019-12-07 21:42:46,916 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b16221e3-3ba1-4331-8093-15178a040c30/bin/utaipan/data/82296b45e/eb309729d94e4bea92024d33cfd86bb2 [2019-12-07 21:42:46,918 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 21:42:46,918 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 21:42:46,919 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 21:42:46,919 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 21:42:46,921 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 21:42:46,922 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 09:42:46" (1/1) ... [2019-12-07 21:42:46,923 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b06cb05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:42:46, skipping insertion in model container [2019-12-07 21:42:46,924 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 09:42:46" (1/1) ... [2019-12-07 21:42:46,928 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 21:42:46,953 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 21:42:47,200 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 21:42:47,209 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 21:42:47,246 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 21:42:47,291 INFO L208 MainTranslator]: Completed translation [2019-12-07 21:42:47,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:42:47 WrapperNode [2019-12-07 21:42:47,292 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 21:42:47,292 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 21:42:47,292 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 21:42:47,292 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 21:42:47,298 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:42:47" (1/1) ... [2019-12-07 21:42:47,309 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:42:47" (1/1) ... [2019-12-07 21:42:47,324 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 21:42:47,324 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 21:42:47,324 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 21:42:47,324 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 21:42:47,331 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:42:47" (1/1) ... [2019-12-07 21:42:47,331 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:42:47" (1/1) ... [2019-12-07 21:42:47,333 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:42:47" (1/1) ... [2019-12-07 21:42:47,333 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:42:47" (1/1) ... [2019-12-07 21:42:47,337 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:42:47" (1/1) ... [2019-12-07 21:42:47,339 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:42:47" (1/1) ... [2019-12-07 21:42:47,340 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:42:47" (1/1) ... [2019-12-07 21:42:47,342 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 21:42:47,343 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 21:42:47,343 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 21:42:47,343 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 21:42:47,343 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:42:47" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b16221e3-3ba1-4331-8093-15178a040c30/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 [2019-12-07 21:42:47,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 21:42:47,389 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-12-07 21:42:47,389 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 21:42:47,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 21:42:47,389 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-12-07 21:42:47,389 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-12-07 21:42:47,390 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-12-07 21:42:47,390 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-12-07 21:42:47,390 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-12-07 21:42:47,390 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-12-07 21:42:47,390 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-12-07 21:42:47,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 21:42:47,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 21:42:47,391 WARN L205 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-12-07 21:42:47,572 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 21:42:47,572 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-07 21:42:47,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 09:42:47 BoogieIcfgContainer [2019-12-07 21:42:47,573 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 21:42:47,574 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 21:42:47,574 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 21:42:47,576 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 21:42:47,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 09:42:46" (1/3) ... [2019-12-07 21:42:47,576 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e3eda84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 09:42:47, skipping insertion in model container [2019-12-07 21:42:47,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:42:47" (2/3) ... [2019-12-07 21:42:47,576 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e3eda84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 09:42:47, skipping insertion in model container [2019-12-07 21:42:47,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 09:42:47" (3/3) ... [2019-12-07 21:42:47,577 INFO L109 eAbstractionObserver]: Analyzing ICFG safe015_pso.oepc.i [2019-12-07 21:42:47,584 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-07 21:42:47,584 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 21:42:47,588 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 21:42:47,588 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-07 21:42:47,605 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 21:42:47,605 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 21:42:47,605 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 21:42:47,605 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 21:42:47,605 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 21:42:47,605 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 21:42:47,606 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 21:42:47,606 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 21:42:47,606 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 21:42:47,606 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 21:42:47,606 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 21:42:47,606 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 21:42:47,606 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 21:42:47,607 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 21:42:47,607 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 21:42:47,607 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 21:42:47,607 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 21:42:47,607 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 21:42:47,619 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-12-07 21:42:47,631 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 21:42:47,631 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 21:42:47,631 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 21:42:47,631 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 21:42:47,631 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 21:42:47,631 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 21:42:47,631 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 21:42:47,632 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 21:42:47,641 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 62 places, 53 transitions [2019-12-07 21:42:47,642 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 62 places, 53 transitions [2019-12-07 21:42:47,672 INFO L134 PetriNetUnfolder]: 1/50 cut-off events. [2019-12-07 21:42:47,672 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-07 21:42:47,677 INFO L76 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 50 events. 1/50 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 25 event pairs. 9/57 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-07 21:42:47,679 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 62 places, 53 transitions [2019-12-07 21:42:47,690 INFO L134 PetriNetUnfolder]: 1/50 cut-off events. [2019-12-07 21:42:47,690 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-07 21:42:47,691 INFO L76 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 50 events. 1/50 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 25 event pairs. 9/57 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-07 21:42:47,692 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 450 [2019-12-07 21:42:47,693 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-07 21:42:48,603 WARN L192 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2019-12-07 21:42:48,614 INFO L206 etLargeBlockEncoding]: Checked pairs total: 504 [2019-12-07 21:42:48,615 INFO L214 etLargeBlockEncoding]: Total number of compositions: 44 [2019-12-07 21:42:48,617 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 21 places, 15 transitions [2019-12-07 21:42:48,625 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 46 states. [2019-12-07 21:42:48,627 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2019-12-07 21:42:48,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-07 21:42:48,631 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:42:48,631 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 21:42:48,631 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 21:42:48,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:42:48,635 INFO L82 PathProgramCache]: Analyzing trace with hash -411766657, now seen corresponding path program 1 times [2019-12-07 21:42:48,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 21:42:48,642 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522252819] [2019-12-07 21:42:48,642 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 21:42:48,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:42:48,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 21:42:48,823 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522252819] [2019-12-07 21:42:48,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 21:42:48,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-07 21:42:48,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841061366] [2019-12-07 21:42:48,827 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 21:42:48,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 21:42:48,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 21:42:48,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 21:42:48,837 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 3 states. [2019-12-07 21:42:48,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 21:42:48,860 INFO L93 Difference]: Finished difference Result 57 states and 102 transitions. [2019-12-07 21:42:48,861 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 21:42:48,861 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-12-07 21:42:48,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 21:42:48,868 INFO L225 Difference]: With dead ends: 57 [2019-12-07 21:42:48,869 INFO L226 Difference]: Without dead ends: 37 [2019-12-07 21:42:48,869 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 21:42:48,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-12-07 21:42:48,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 34. [2019-12-07 21:42:48,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-12-07 21:42:48,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 54 transitions. [2019-12-07 21:42:48,893 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 54 transitions. Word has length 8 [2019-12-07 21:42:48,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 21:42:48,894 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 54 transitions. [2019-12-07 21:42:48,894 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 21:42:48,894 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 54 transitions. [2019-12-07 21:42:48,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-07 21:42:48,894 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:42:48,894 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 21:42:48,895 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 21:42:48,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:42:48,895 INFO L82 PathProgramCache]: Analyzing trace with hash 116613460, now seen corresponding path program 1 times [2019-12-07 21:42:48,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 21:42:48,895 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729364501] [2019-12-07 21:42:48,895 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 21:42:48,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:42:48,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 21:42:48,966 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729364501] [2019-12-07 21:42:48,966 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 21:42:48,966 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 21:42:48,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311203069] [2019-12-07 21:42:48,967 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 21:42:48,967 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 21:42:48,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 21:42:48,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-07 21:42:48,968 INFO L87 Difference]: Start difference. First operand 34 states and 54 transitions. Second operand 5 states. [2019-12-07 21:42:49,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 21:42:49,002 INFO L93 Difference]: Finished difference Result 37 states and 52 transitions. [2019-12-07 21:42:49,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 21:42:49,003 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2019-12-07 21:42:49,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 21:42:49,003 INFO L225 Difference]: With dead ends: 37 [2019-12-07 21:42:49,003 INFO L226 Difference]: Without dead ends: 26 [2019-12-07 21:42:49,004 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-12-07 21:42:49,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-12-07 21:42:49,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-12-07 21:42:49,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-12-07 21:42:49,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 35 transitions. [2019-12-07 21:42:49,008 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 35 transitions. Word has length 9 [2019-12-07 21:42:49,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 21:42:49,008 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 35 transitions. [2019-12-07 21:42:49,008 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 21:42:49,008 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 35 transitions. [2019-12-07 21:42:49,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 21:42:49,009 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:42:49,009 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 21:42:49,009 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 21:42:49,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:42:49,009 INFO L82 PathProgramCache]: Analyzing trace with hash 934712652, now seen corresponding path program 1 times [2019-12-07 21:42:49,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 21:42:49,010 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148889377] [2019-12-07 21:42:49,010 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 21:42:49,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:42:49,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 21:42:49,077 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148889377] [2019-12-07 21:42:49,077 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 21:42:49,077 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 21:42:49,078 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415492843] [2019-12-07 21:42:49,078 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 21:42:49,078 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 21:42:49,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 21:42:49,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-12-07 21:42:49,079 INFO L87 Difference]: Start difference. First operand 26 states and 35 transitions. Second operand 6 states. [2019-12-07 21:42:49,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 21:42:49,116 INFO L93 Difference]: Finished difference Result 25 states and 31 transitions. [2019-12-07 21:42:49,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 21:42:49,117 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2019-12-07 21:42:49,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 21:42:49,117 INFO L225 Difference]: With dead ends: 25 [2019-12-07 21:42:49,117 INFO L226 Difference]: Without dead ends: 17 [2019-12-07 21:42:49,117 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2019-12-07 21:42:49,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-12-07 21:42:49,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-12-07 21:42:49,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-12-07 21:42:49,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2019-12-07 21:42:49,119 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 10 [2019-12-07 21:42:49,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 21:42:49,119 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2019-12-07 21:42:49,120 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 21:42:49,120 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2019-12-07 21:42:49,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 21:42:49,120 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:42:49,120 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 21:42:49,120 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 21:42:49,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:42:49,120 INFO L82 PathProgramCache]: Analyzing trace with hash -977833272, now seen corresponding path program 1 times [2019-12-07 21:42:49,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 21:42:49,121 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085384626] [2019-12-07 21:42:49,121 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 21:42:49,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:42:49,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 21:42:49,170 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085384626] [2019-12-07 21:42:49,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 21:42:49,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 21:42:49,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671678816] [2019-12-07 21:42:49,170 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 21:42:49,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 21:42:49,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 21:42:49,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 21:42:49,171 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand 4 states. [2019-12-07 21:42:49,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 21:42:49,180 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2019-12-07 21:42:49,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 21:42:49,180 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-07 21:42:49,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 21:42:49,181 INFO L225 Difference]: With dead ends: 20 [2019-12-07 21:42:49,181 INFO L226 Difference]: Without dead ends: 12 [2019-12-07 21:42:49,181 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 21:42:49,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-12-07 21:42:49,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-12-07 21:42:49,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-12-07 21:42:49,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 11 transitions. [2019-12-07 21:42:49,183 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 11 transitions. Word has length 11 [2019-12-07 21:42:49,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 21:42:49,184 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 11 transitions. [2019-12-07 21:42:49,184 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 21:42:49,184 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2019-12-07 21:42:49,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 21:42:49,184 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:42:49,184 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 21:42:49,184 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 21:42:49,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:42:49,185 INFO L82 PathProgramCache]: Analyzing trace with hash -462405218, now seen corresponding path program 2 times [2019-12-07 21:42:49,185 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 21:42:49,185 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118653000] [2019-12-07 21:42:49,185 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 21:42:49,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:42:49,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 21:42:49,235 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118653000] [2019-12-07 21:42:49,235 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 21:42:49,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 21:42:49,235 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276994272] [2019-12-07 21:42:49,235 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 21:42:49,235 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 21:42:49,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 21:42:49,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 21:42:49,236 INFO L87 Difference]: Start difference. First operand 12 states and 11 transitions. Second operand 5 states. [2019-12-07 21:42:49,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 21:42:49,244 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2019-12-07 21:42:49,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 21:42:49,245 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-12-07 21:42:49,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 21:42:49,245 INFO L225 Difference]: With dead ends: 11 [2019-12-07 21:42:49,245 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 21:42:49,245 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2019-12-07 21:42:49,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 21:42:49,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 21:42:49,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 21:42:49,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 21:42:49,246 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-12-07 21:42:49,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 21:42:49,246 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 21:42:49,246 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 21:42:49,246 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 21:42:49,246 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 21:42:49,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 09:42:49 BasicIcfg [2019-12-07 21:42:49,248 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 21:42:49,249 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 21:42:49,249 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 21:42:49,249 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 21:42:49,249 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 09:42:47" (3/4) ... [2019-12-07 21:42:49,251 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 21:42:49,256 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2019-12-07 21:42:49,256 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2019-12-07 21:42:49,256 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2019-12-07 21:42:49,258 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2019-12-07 21:42:49,259 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-12-07 21:42:49,259 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-12-07 21:42:49,287 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_b16221e3-3ba1-4331-8093-15178a040c30/bin/utaipan/witness.graphml [2019-12-07 21:42:49,287 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 21:42:49,288 INFO L168 Benchmark]: Toolchain (without parser) took 2369.34 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 114.8 MB). Free memory was 940.7 MB in the beginning and 1.0 GB in the end (delta: -85.5 MB). Peak memory consumption was 29.3 MB. Max. memory is 11.5 GB. [2019-12-07 21:42:49,288 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 21:42:49,289 INFO L168 Benchmark]: CACSL2BoogieTranslator took 372.94 ms. Allocated memory is still 1.0 GB. Free memory was 940.7 MB in the beginning and 980.3 MB in the end (delta: -39.6 MB). Peak memory consumption was 17.7 MB. Max. memory is 11.5 GB. [2019-12-07 21:42:49,289 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.79 ms. Allocated memory is still 1.0 GB. Free memory is still 980.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 21:42:49,289 INFO L168 Benchmark]: Boogie Preprocessor took 18.31 ms. Allocated memory is still 1.0 GB. Free memory is still 980.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 21:42:49,290 INFO L168 Benchmark]: RCFGBuilder took 230.55 ms. Allocated memory is still 1.0 GB. Free memory was 980.3 MB in the beginning and 950.3 MB in the end (delta: 30.0 MB). Peak memory consumption was 30.0 MB. Max. memory is 11.5 GB. [2019-12-07 21:42:49,290 INFO L168 Benchmark]: TraceAbstraction took 1674.76 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 114.8 MB). Free memory was 950.3 MB in the beginning and 1.0 GB in the end (delta: -86.4 MB). Peak memory consumption was 28.4 MB. Max. memory is 11.5 GB. [2019-12-07 21:42:49,291 INFO L168 Benchmark]: Witness Printer took 38.00 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: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 11.5 GB. [2019-12-07 21:42:49,293 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 372.94 ms. Allocated memory is still 1.0 GB. Free memory was 940.7 MB in the beginning and 980.3 MB in the end (delta: -39.6 MB). Peak memory consumption was 17.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 31.79 ms. Allocated memory is still 1.0 GB. Free memory is still 980.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.31 ms. Allocated memory is still 1.0 GB. Free memory is still 980.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 230.55 ms. Allocated memory is still 1.0 GB. Free memory was 980.3 MB in the beginning and 950.3 MB in the end (delta: 30.0 MB). Peak memory consumption was 30.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1674.76 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 114.8 MB). Free memory was 950.3 MB in the beginning and 1.0 GB in the end (delta: -86.4 MB). Peak memory consumption was 28.4 MB. Max. memory is 11.5 GB. * Witness Printer took 38.00 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: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.9s, 62 ProgramPointsBefore, 21 ProgramPointsAfterwards, 53 TransitionsBefore, 15 TransitionsAfterwards, 450 CoEnabledTransitionPairs, 7 FixpointIterations, 13 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 1 ChoiceCompositions, 246 VarBasedMoverChecksPositive, 18 VarBasedMoverChecksNegative, 4 SemBasedMoverChecksPositive, 18 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 0 MoverChecksTotal, 504 CheckedPairsTotal, 44 TotalNumberOfCompositions - 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 4 procedures, 53 locations, 1 error locations. Result: SAFE, OverallTime: 1.6s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 41 SDtfs, 55 SDslu, 31 SDs, 0 SdLazy, 46 SolverSat, 36 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred 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, 5 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 2424 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...