./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe016_pso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_3814e963-c208-4c6e-8668-4f2023552336/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_3814e963-c208-4c6e-8668-4f2023552336/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_3814e963-c208-4c6e-8668-4f2023552336/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_3814e963-c208-4c6e-8668-4f2023552336/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe016_pso.oepc.i -s /tmp/vcloud-vcloud-master/worker/working_dir_3814e963-c208-4c6e-8668-4f2023552336/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_3814e963-c208-4c6e-8668-4f2023552336/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 927eec9b21606ebcbb8bef18e7800fece5242abf ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 11:23:05,403 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:23:05,405 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:23:05,415 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:23:05,416 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:23:05,417 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:23:05,418 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:23:05,420 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:23:05,423 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:23:05,426 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:23:05,427 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:23:05,429 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:23:05,434 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:23:05,435 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:23:05,435 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:23:05,436 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:23:05,436 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:23:05,437 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:23:05,438 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:23:05,439 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:23:05,442 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:23:05,444 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:23:05,445 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:23:05,447 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:23:05,449 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:23:05,452 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:23:05,452 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:23:05,453 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:23:05,453 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:23:05,454 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:23:05,454 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:23:05,454 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:23:05,455 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:23:05,455 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:23:05,456 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:23:05,458 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:23:05,459 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:23:05,459 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:23:05,460 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:23:05,460 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:23:05,463 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:23:05,464 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_3814e963-c208-4c6e-8668-4f2023552336/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-10-22 11:23:05,476 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:23:05,484 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:23:05,485 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:23:05,485 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:23:05,485 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:23:05,485 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:23:05,485 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-10-22 11:23:05,485 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:23:05,486 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:23:05,486 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-10-22 11:23:05,486 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-10-22 11:23:05,486 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:23:05,487 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:23:05,487 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:23:05,487 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 11:23:05,487 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:23:05,487 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:23:05,487 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:23:05,488 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:23:05,490 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:23:05,490 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:23:05,490 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:23:05,490 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:23:05,491 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:23:05,491 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:23:05,491 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:23:05,491 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:23:05,491 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:23:05,491 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:23:05,492 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:23:05,492 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:23:05,492 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-22 11:23:05,492 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 11:23:05,492 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:23:05,492 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:23:05,492 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/working_dir_3814e963-c208-4c6e-8668-4f2023552336/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 -> 927eec9b21606ebcbb8bef18e7800fece5242abf [2019-10-22 11:23:05,515 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:23:05,525 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:23:05,528 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:23:05,531 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:23:05,532 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:23:05,532 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_3814e963-c208-4c6e-8668-4f2023552336/bin/utaipan/../../sv-benchmarks/c/pthread-wmm/safe016_pso.oepc.i [2019-10-22 11:23:05,581 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3814e963-c208-4c6e-8668-4f2023552336/bin/utaipan/data/a66aebe62/aabea00921974bfbb03285cf05e71ed9/FLAGd3ff56e1b [2019-10-22 11:23:06,044 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:23:06,046 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_3814e963-c208-4c6e-8668-4f2023552336/sv-benchmarks/c/pthread-wmm/safe016_pso.oepc.i [2019-10-22 11:23:06,058 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3814e963-c208-4c6e-8668-4f2023552336/bin/utaipan/data/a66aebe62/aabea00921974bfbb03285cf05e71ed9/FLAGd3ff56e1b [2019-10-22 11:23:06,369 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_3814e963-c208-4c6e-8668-4f2023552336/bin/utaipan/data/a66aebe62/aabea00921974bfbb03285cf05e71ed9 [2019-10-22 11:23:06,372 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:23:06,373 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:23:06,374 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:23:06,374 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:23:06,377 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:23:06,378 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:23:06" (1/1) ... [2019-10-22 11:23:06,381 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c12a99e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:06, skipping insertion in model container [2019-10-22 11:23:06,381 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:23:06" (1/1) ... [2019-10-22 11:23:06,388 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:23:06,431 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:23:06,843 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:23:06,856 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:23:06,915 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:23:06,973 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:23:06,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:06 WrapperNode [2019-10-22 11:23:06,974 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:23:06,975 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:23:06,975 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:23:06,975 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:23:06,981 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:06" (1/1) ... [2019-10-22 11:23:06,994 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:06" (1/1) ... [2019-10-22 11:23:07,012 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:23:07,012 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:23:07,012 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:23:07,012 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:23:07,020 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:06" (1/1) ... [2019-10-22 11:23:07,021 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:06" (1/1) ... [2019-10-22 11:23:07,023 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:06" (1/1) ... [2019-10-22 11:23:07,023 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:06" (1/1) ... [2019-10-22 11:23:07,028 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:06" (1/1) ... [2019-10-22 11:23:07,030 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:06" (1/1) ... [2019-10-22 11:23:07,032 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:06" (1/1) ... [2019-10-22 11:23:07,034 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:23:07,035 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:23:07,035 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:23:07,035 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:23:07,036 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:06" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3814e963-c208-4c6e-8668-4f2023552336/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 [2019-10-22 11:23:07,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-22 11:23:07,098 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-10-22 11:23:07,098 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 11:23:07,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 11:23:07,099 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-10-22 11:23:07,099 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-10-22 11:23:07,099 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-10-22 11:23:07,099 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-10-22 11:23:07,099 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-10-22 11:23:07,099 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-10-22 11:23:07,099 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2019-10-22 11:23:07,099 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2019-10-22 11:23:07,100 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-10-22 11:23:07,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:23:07,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:23:07,101 WARN L202 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-10-22 11:23:07,424 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:23:07,424 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-10-22 11:23:07,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:23:07 BoogieIcfgContainer [2019-10-22 11:23:07,425 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:23:07,426 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:23:07,426 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:23:07,428 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:23:07,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:23:06" (1/3) ... [2019-10-22 11:23:07,429 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d043588 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:23:07, skipping insertion in model container [2019-10-22 11:23:07,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:06" (2/3) ... [2019-10-22 11:23:07,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d043588 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:23:07, skipping insertion in model container [2019-10-22 11:23:07,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:23:07" (3/3) ... [2019-10-22 11:23:07,431 INFO L109 eAbstractionObserver]: Analyzing ICFG safe016_pso.oepc.i [2019-10-22 11:23:07,462 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:23:07,462 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:23:07,462 WARN L315 ript$VariableManager]: TermVariabe Thread3_P0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:23:07,462 WARN L315 ript$VariableManager]: TermVariabe Thread3_P0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:23:07,463 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P0_#t~nondet3.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:23:07,463 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P0_#t~nondet3.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:23:07,463 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:23:07,463 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:23:07,463 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P0_#t~nondet3.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:23:07,463 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P0_#t~nondet3.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:23:07,464 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:23:07,464 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:23:07,464 WARN L315 ript$VariableManager]: TermVariabe Thread0_P1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:23:07,464 WARN L315 ript$VariableManager]: TermVariabe Thread0_P1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:23:07,464 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P1_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:23:07,464 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P1_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:23:07,464 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:23:07,465 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:23:07,465 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P1_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:23:07,465 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P1_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:23:07,465 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:23:07,465 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:23:07,466 WARN L315 ript$VariableManager]: TermVariabe Thread1_P2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:23:07,466 WARN L315 ript$VariableManager]: TermVariabe Thread1_P2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:23:07,466 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P2_#t~nondet5.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:23:07,466 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P2_#t~nondet5.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:23:07,466 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:23:07,466 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:23:07,466 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P2_#t~nondet5.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:23:07,467 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P2_#t~nondet5.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:23:07,467 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:23:07,467 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:23:07,467 WARN L315 ript$VariableManager]: TermVariabe Thread2_P3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:23:07,467 WARN L315 ript$VariableManager]: TermVariabe Thread2_P3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:23:07,467 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P3_#t~nondet6.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:23:07,468 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P3_#t~nondet6.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:23:07,468 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:23:07,473 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:23:07,473 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P3_#t~nondet6.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:23:07,473 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P3_#t~nondet6.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:23:07,488 WARN L141 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-10-22 11:23:07,488 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:23:07,494 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 11:23:07,501 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 11:23:07,514 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:23:07,514 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:23:07,514 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:23:07,514 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:23:07,514 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:23:07,514 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:23:07,515 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:23:07,515 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:23:07,521 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 66 places, 62 transitions [2019-10-22 11:23:08,701 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 13134 states. [2019-10-22 11:23:08,703 INFO L276 IsEmpty]: Start isEmpty. Operand 13134 states. [2019-10-22 11:23:08,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-10-22 11:23:08,731 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:08,734 INFO L380 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, 1, 1, 1, 1, 1] [2019-10-22 11:23:08,735 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:23:08,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:08,745 INFO L82 PathProgramCache]: Analyzing trace with hash 264651674, now seen corresponding path program 1 times [2019-10-22 11:23:08,753 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:23:08,754 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840530540] [2019-10-22 11:23:08,754 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:08,754 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:08,755 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:23:08,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:09,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:23:09,065 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840530540] [2019-10-22 11:23:09,066 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:23:09,066 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 11:23:09,066 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064788244] [2019-10-22 11:23:09,070 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 11:23:09,071 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:23:09,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 11:23:09,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:23:09,087 INFO L87 Difference]: Start difference. First operand 13134 states. Second operand 4 states. [2019-10-22 11:23:09,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:23:09,321 INFO L93 Difference]: Finished difference Result 13740 states and 55791 transitions. [2019-10-22 11:23:09,322 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 11:23:09,323 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2019-10-22 11:23:09,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:23:09,398 INFO L225 Difference]: With dead ends: 13740 [2019-10-22 11:23:09,400 INFO L226 Difference]: Without dead ends: 5627 [2019-10-22 11:23:09,402 INFO L600 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 [2019-10-22 11:23:09,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5627 states. [2019-10-22 11:23:09,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5627 to 5627. [2019-10-22 11:23:09,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5627 states. [2019-10-22 11:23:09,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5627 states to 5627 states and 22350 transitions. [2019-10-22 11:23:09,691 INFO L78 Accepts]: Start accepts. Automaton has 5627 states and 22350 transitions. Word has length 33 [2019-10-22 11:23:09,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:23:09,695 INFO L462 AbstractCegarLoop]: Abstraction has 5627 states and 22350 transitions. [2019-10-22 11:23:09,695 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 11:23:09,695 INFO L276 IsEmpty]: Start isEmpty. Operand 5627 states and 22350 transitions. [2019-10-22 11:23:09,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-10-22 11:23:09,701 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:09,702 INFO L380 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, 1, 1, 1, 1, 1, 1] [2019-10-22 11:23:09,702 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:23:09,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:09,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1689731992, now seen corresponding path program 1 times [2019-10-22 11:23:09,703 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:23:09,703 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790146636] [2019-10-22 11:23:09,704 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:09,704 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:09,704 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:23:09,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:09,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:23:09,861 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790146636] [2019-10-22 11:23:09,861 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:23:09,861 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 11:23:09,861 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837039894] [2019-10-22 11:23:09,862 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:23:09,863 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:23:09,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:23:09,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:23:09,863 INFO L87 Difference]: Start difference. First operand 5627 states and 22350 transitions. Second operand 5 states. [2019-10-22 11:23:10,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:23:10,097 INFO L93 Difference]: Finished difference Result 6139 states and 23830 transitions. [2019-10-22 11:23:10,098 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 11:23:10,098 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2019-10-22 11:23:10,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:23:10,132 INFO L225 Difference]: With dead ends: 6139 [2019-10-22 11:23:10,132 INFO L226 Difference]: Without dead ends: 5515 [2019-10-22 11:23:10,133 INFO L600 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 [2019-10-22 11:23:10,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5515 states. [2019-10-22 11:23:10,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5515 to 5515. [2019-10-22 11:23:10,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5515 states. [2019-10-22 11:23:10,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5515 states to 5515 states and 21818 transitions. [2019-10-22 11:23:10,290 INFO L78 Accepts]: Start accepts. Automaton has 5515 states and 21818 transitions. Word has length 34 [2019-10-22 11:23:10,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:23:10,290 INFO L462 AbstractCegarLoop]: Abstraction has 5515 states and 21818 transitions. [2019-10-22 11:23:10,290 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:23:10,290 INFO L276 IsEmpty]: Start isEmpty. Operand 5515 states and 21818 transitions. [2019-10-22 11:23:10,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-10-22 11:23:10,296 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:10,296 INFO L380 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, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:23:10,296 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:23:10,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:10,297 INFO L82 PathProgramCache]: Analyzing trace with hash -135367944, now seen corresponding path program 1 times [2019-10-22 11:23:10,297 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:23:10,297 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962331274] [2019-10-22 11:23:10,297 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:10,297 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:10,297 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:23:10,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:10,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:23:10,383 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962331274] [2019-10-22 11:23:10,383 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:23:10,384 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-22 11:23:10,384 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287918092] [2019-10-22 11:23:10,384 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 11:23:10,384 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:23:10,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 11:23:10,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-22 11:23:10,385 INFO L87 Difference]: Start difference. First operand 5515 states and 21818 transitions. Second operand 6 states. [2019-10-22 11:23:10,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:23:10,519 INFO L93 Difference]: Finished difference Result 5451 states and 20826 transitions. [2019-10-22 11:23:10,519 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 11:23:10,519 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2019-10-22 11:23:10,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:23:10,561 INFO L225 Difference]: With dead ends: 5451 [2019-10-22 11:23:10,561 INFO L226 Difference]: Without dead ends: 4843 [2019-10-22 11:23:10,561 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2019-10-22 11:23:10,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4843 states. [2019-10-22 11:23:10,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4843 to 4843. [2019-10-22 11:23:10,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4843 states. [2019-10-22 11:23:10,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4843 states to 4843 states and 18794 transitions. [2019-10-22 11:23:10,701 INFO L78 Accepts]: Start accepts. Automaton has 4843 states and 18794 transitions. Word has length 35 [2019-10-22 11:23:10,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:23:10,703 INFO L462 AbstractCegarLoop]: Abstraction has 4843 states and 18794 transitions. [2019-10-22 11:23:10,703 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 11:23:10,703 INFO L276 IsEmpty]: Start isEmpty. Operand 4843 states and 18794 transitions. [2019-10-22 11:23:10,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-10-22 11:23:10,711 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:10,711 INFO L380 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, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:23:10,711 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:23:10,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:10,712 INFO L82 PathProgramCache]: Analyzing trace with hash -1222045992, now seen corresponding path program 1 times [2019-10-22 11:23:10,712 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:23:10,712 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851200173] [2019-10-22 11:23:10,712 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:10,712 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:10,713 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:23:10,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:10,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:23:10,805 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851200173] [2019-10-22 11:23:10,805 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:23:10,806 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-22 11:23:10,806 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468081815] [2019-10-22 11:23:10,806 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 11:23:10,806 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:23:10,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 11:23:10,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-22 11:23:10,807 INFO L87 Difference]: Start difference. First operand 4843 states and 18794 transitions. Second operand 7 states. [2019-10-22 11:23:10,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:23:10,923 INFO L93 Difference]: Finished difference Result 3563 states and 13034 transitions. [2019-10-22 11:23:10,924 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-22 11:23:10,924 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2019-10-22 11:23:10,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:23:10,936 INFO L225 Difference]: With dead ends: 3563 [2019-10-22 11:23:10,936 INFO L226 Difference]: Without dead ends: 3051 [2019-10-22 11:23:10,937 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2019-10-22 11:23:10,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3051 states. [2019-10-22 11:23:11,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3051 to 3051. [2019-10-22 11:23:11,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3051 states. [2019-10-22 11:23:11,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3051 states to 3051 states and 11178 transitions. [2019-10-22 11:23:11,014 INFO L78 Accepts]: Start accepts. Automaton has 3051 states and 11178 transitions. Word has length 36 [2019-10-22 11:23:11,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:23:11,016 INFO L462 AbstractCegarLoop]: Abstraction has 3051 states and 11178 transitions. [2019-10-22 11:23:11,016 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 11:23:11,016 INFO L276 IsEmpty]: Start isEmpty. Operand 3051 states and 11178 transitions. [2019-10-22 11:23:11,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-10-22 11:23:11,022 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:11,022 INFO L380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:23:11,023 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:23:11,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:11,023 INFO L82 PathProgramCache]: Analyzing trace with hash -1705240570, now seen corresponding path program 1 times [2019-10-22 11:23:11,023 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:23:11,026 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144821918] [2019-10-22 11:23:11,027 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:11,027 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:11,027 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:23:11,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:11,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:23:11,208 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144821918] [2019-10-22 11:23:11,208 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:23:11,208 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-22 11:23:11,209 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130908186] [2019-10-22 11:23:11,209 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 11:23:11,209 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:23:11,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 11:23:11,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-22 11:23:11,210 INFO L87 Difference]: Start difference. First operand 3051 states and 11178 transitions. Second operand 8 states. [2019-10-22 11:23:11,530 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2019-10-22 11:23:11,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:23:11,561 INFO L93 Difference]: Finished difference Result 7115 states and 26202 transitions. [2019-10-22 11:23:11,561 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-22 11:23:11,561 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 37 [2019-10-22 11:23:11,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:23:11,574 INFO L225 Difference]: With dead ends: 7115 [2019-10-22 11:23:11,575 INFO L226 Difference]: Without dead ends: 3095 [2019-10-22 11:23:11,575 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2019-10-22 11:23:11,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3095 states. [2019-10-22 11:23:11,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3095 to 2711. [2019-10-22 11:23:11,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2711 states. [2019-10-22 11:23:11,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2711 states to 2711 states and 10014 transitions. [2019-10-22 11:23:11,651 INFO L78 Accepts]: Start accepts. Automaton has 2711 states and 10014 transitions. Word has length 37 [2019-10-22 11:23:11,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:23:11,651 INFO L462 AbstractCegarLoop]: Abstraction has 2711 states and 10014 transitions. [2019-10-22 11:23:11,651 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 11:23:11,651 INFO L276 IsEmpty]: Start isEmpty. Operand 2711 states and 10014 transitions. [2019-10-22 11:23:11,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-10-22 11:23:11,655 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:11,655 INFO L380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:23:11,656 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:23:11,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:11,656 INFO L82 PathProgramCache]: Analyzing trace with hash 1508168928, now seen corresponding path program 2 times [2019-10-22 11:23:11,656 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:23:11,656 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971345957] [2019-10-22 11:23:11,657 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:11,657 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:11,657 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:23:11,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:11,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:23:11,796 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971345957] [2019-10-22 11:23:11,796 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:23:11,796 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-22 11:23:11,796 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863563606] [2019-10-22 11:23:11,797 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 11:23:11,797 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:23:11,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 11:23:11,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-22 11:23:11,797 INFO L87 Difference]: Start difference. First operand 2711 states and 10014 transitions. Second operand 8 states. [2019-10-22 11:23:12,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:23:12,075 INFO L93 Difference]: Finished difference Result 7527 states and 28342 transitions. [2019-10-22 11:23:12,075 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-22 11:23:12,075 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 37 [2019-10-22 11:23:12,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:23:12,084 INFO L225 Difference]: With dead ends: 7527 [2019-10-22 11:23:12,084 INFO L226 Difference]: Without dead ends: 2175 [2019-10-22 11:23:12,084 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2019-10-22 11:23:12,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2175 states. [2019-10-22 11:23:12,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2175 to 2175. [2019-10-22 11:23:12,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2175 states. [2019-10-22 11:23:12,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2175 states to 2175 states and 8250 transitions. [2019-10-22 11:23:12,137 INFO L78 Accepts]: Start accepts. Automaton has 2175 states and 8250 transitions. Word has length 37 [2019-10-22 11:23:12,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:23:12,138 INFO L462 AbstractCegarLoop]: Abstraction has 2175 states and 8250 transitions. [2019-10-22 11:23:12,138 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 11:23:12,139 INFO L276 IsEmpty]: Start isEmpty. Operand 2175 states and 8250 transitions. [2019-10-22 11:23:12,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-10-22 11:23:12,141 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:12,141 INFO L380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:23:12,141 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:23:12,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:12,142 INFO L82 PathProgramCache]: Analyzing trace with hash -1640251676, now seen corresponding path program 3 times [2019-10-22 11:23:12,142 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:23:12,142 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077997770] [2019-10-22 11:23:12,142 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:12,142 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:12,142 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:23:12,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:12,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:23:12,219 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077997770] [2019-10-22 11:23:12,219 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:23:12,219 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-22 11:23:12,219 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133511361] [2019-10-22 11:23:12,220 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 11:23:12,220 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:23:12,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 11:23:12,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-22 11:23:12,221 INFO L87 Difference]: Start difference. First operand 2175 states and 8250 transitions. Second operand 7 states. [2019-10-22 11:23:12,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:23:12,304 INFO L93 Difference]: Finished difference Result 1663 states and 6202 transitions. [2019-10-22 11:23:12,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 11:23:12,304 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 37 [2019-10-22 11:23:12,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:23:12,304 INFO L225 Difference]: With dead ends: 1663 [2019-10-22 11:23:12,305 INFO L226 Difference]: Without dead ends: 0 [2019-10-22 11:23:12,305 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2019-10-22 11:23:12,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-22 11:23:12,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-22 11:23:12,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-22 11:23:12,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 11:23:12,306 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 37 [2019-10-22 11:23:12,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:23:12,306 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 11:23:12,306 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 11:23:12,306 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-22 11:23:12,306 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-22 11:23:12,310 INFO L303 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2019-10-22 11:23:12,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 11:23:12 BasicIcfg [2019-10-22 11:23:12,312 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 11:23:12,312 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 11:23:12,312 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 11:23:12,313 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 11:23:12,313 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:23:07" (3/4) ... [2019-10-22 11:23:12,317 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-10-22 11:23:12,323 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2019-10-22 11:23:12,323 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2019-10-22 11:23:12,323 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2019-10-22 11:23:12,323 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2019-10-22 11:23:12,326 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2019-10-22 11:23:12,326 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-10-22 11:23:12,360 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_3814e963-c208-4c6e-8668-4f2023552336/bin/utaipan/witness.graphml [2019-10-22 11:23:12,360 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 11:23:12,362 INFO L168 Benchmark]: Toolchain (without parser) took 5988.62 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 226.5 MB). Free memory was 937.0 MB in the beginning and 946.1 MB in the end (delta: -9.2 MB). Peak memory consumption was 217.3 MB. Max. memory is 11.5 GB. [2019-10-22 11:23:12,362 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 963.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:23:12,362 INFO L168 Benchmark]: CACSL2BoogieTranslator took 599.93 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 937.0 MB in the beginning and 1.1 GB in the end (delta: -171.8 MB). Peak memory consumption was 18.9 MB. Max. memory is 11.5 GB. [2019-10-22 11:23:12,363 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.24 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:23:12,363 INFO L168 Benchmark]: Boogie Preprocessor took 22.59 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:23:12,363 INFO L168 Benchmark]: RCFGBuilder took 390.24 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 11.5 GB. [2019-10-22 11:23:12,364 INFO L168 Benchmark]: TraceAbstraction took 4886.38 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 83.9 MB). Free memory was 1.1 GB in the beginning and 948.4 MB in the end (delta: 132.6 MB). Peak memory consumption was 216.5 MB. Max. memory is 11.5 GB. [2019-10-22 11:23:12,364 INFO L168 Benchmark]: Witness Printer took 47.83 ms. Allocated memory is still 1.3 GB. Free memory was 948.4 MB in the beginning and 946.1 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 11.5 GB. [2019-10-22 11:23:12,366 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 963.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 599.93 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 937.0 MB in the beginning and 1.1 GB in the end (delta: -171.8 MB). Peak memory consumption was 18.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 37.24 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.59 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 390.24 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4886.38 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 83.9 MB). Free memory was 1.1 GB in the beginning and 948.4 MB in the end (delta: 132.6 MB). Peak memory consumption was 216.5 MB. Max. memory is 11.5 GB. * Witness Printer took 47.83 ms. Allocated memory is still 1.3 GB. Free memory was 948.4 MB in the beginning and 946.1 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 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, 86 locations, 1 error locations. Result: SAFE, OverallTime: 4.7s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 537 SDtfs, 950 SDslu, 1475 SDs, 0 SdLazy, 181 SolverSat, 93 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 77 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13134occurred 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: 0.7s AutomataMinimizationTime, 7 MinimizatonAttempts, 384 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 249 NumberOfCodeBlocks, 249 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 242 ConstructedInterpolants, 0 QuantifiedInterpolants, 25854 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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...