./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/sum01-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_9874ce7d-bcb4-48ea-ac84-5a286631d532/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_9874ce7d-bcb4-48ea-ac84-5a286631d532/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_9874ce7d-bcb4-48ea-ac84-5a286631d532/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_9874ce7d-bcb4-48ea-ac84-5a286631d532/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops/sum01-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_9874ce7d-bcb4-48ea-ac84-5a286631d532/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_9874ce7d-bcb4-48ea-ac84-5a286631d532/bin/uautomizer --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3ef497a13bffaa6a3ec01f2d87f935fee9ff2c5a ................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-25 08:53:28,323 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:53:28,324 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:53:28,339 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:53:28,339 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:53:28,341 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:53:28,342 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:53:28,351 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:53:28,355 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:53:28,359 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:53:28,361 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:53:28,362 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:53:28,362 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:53:28,364 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:53:28,365 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:53:28,366 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:53:28,367 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:53:28,368 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:53:28,370 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:53:28,374 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:53:28,378 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:53:28,381 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:53:28,382 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:53:28,383 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:53:28,386 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:53:28,386 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:53:28,387 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:53:28,388 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:53:28,389 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:53:28,390 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:53:28,390 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:53:28,391 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:53:28,392 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:53:28,392 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:53:28,393 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:53:28,393 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:53:28,394 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:53:28,394 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:53:28,394 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:53:28,395 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:53:28,396 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:53:28,397 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_9874ce7d-bcb4-48ea-ac84-5a286631d532/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-25 08:53:28,421 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:53:28,431 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:53:28,432 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:53:28,433 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:53:28,433 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:53:28,433 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:53:28,433 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:53:28,434 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:53:28,434 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:53:28,434 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:53:28,434 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-25 08:53:28,434 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:53:28,435 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-25 08:53:28,435 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:53:28,435 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:53:28,435 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:53:28,435 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-25 08:53:28,436 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:53:28,437 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:53:28,437 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:53:28,437 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:53:28,438 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:53:28,438 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:53:28,438 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:53:28,439 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-25 08:53:28,439 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-25 08:53:28,439 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-25 08:53:28,439 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-25 08:53:28,439 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_9874ce7d-bcb4-48ea-ac84-5a286631d532/bin/uautomizer 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 -> Automizer 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 -> 3ef497a13bffaa6a3ec01f2d87f935fee9ff2c5a [2019-11-25 08:53:28,607 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:53:28,624 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:53:28,627 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:53:28,628 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:53:28,628 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:53:28,629 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_9874ce7d-bcb4-48ea-ac84-5a286631d532/bin/uautomizer/../../sv-benchmarks/c/loops/sum01-2.i [2019-11-25 08:53:28,690 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9874ce7d-bcb4-48ea-ac84-5a286631d532/bin/uautomizer/data/490f28525/78f11cfa529b48fd9d59ac62f862feef/FLAG3ddf627ae [2019-11-25 08:53:29,104 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:53:29,105 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_9874ce7d-bcb4-48ea-ac84-5a286631d532/sv-benchmarks/c/loops/sum01-2.i [2019-11-25 08:53:29,110 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9874ce7d-bcb4-48ea-ac84-5a286631d532/bin/uautomizer/data/490f28525/78f11cfa529b48fd9d59ac62f862feef/FLAG3ddf627ae [2019-11-25 08:53:29,524 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_9874ce7d-bcb4-48ea-ac84-5a286631d532/bin/uautomizer/data/490f28525/78f11cfa529b48fd9d59ac62f862feef [2019-11-25 08:53:29,527 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:53:29,528 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:53:29,529 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:53:29,529 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:53:29,533 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:53:29,534 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:53:29" (1/1) ... [2019-11-25 08:53:29,536 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35ac5180 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:29, skipping insertion in model container [2019-11-25 08:53:29,537 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:53:29" (1/1) ... [2019-11-25 08:53:29,546 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:53:29,562 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:53:29,717 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:53:29,722 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:53:29,800 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:53:29,812 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:53:29,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:29 WrapperNode [2019-11-25 08:53:29,812 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:53:29,813 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:53:29,813 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:53:29,813 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:53:29,822 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:29" (1/1) ... [2019-11-25 08:53:29,827 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:29" (1/1) ... [2019-11-25 08:53:29,846 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:53:29,848 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:53:29,849 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:53:29,849 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:53:29,857 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:29" (1/1) ... [2019-11-25 08:53:29,858 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:29" (1/1) ... [2019-11-25 08:53:29,859 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:29" (1/1) ... [2019-11-25 08:53:29,859 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:29" (1/1) ... [2019-11-25 08:53:29,861 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:29" (1/1) ... [2019-11-25 08:53:29,867 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:29" (1/1) ... [2019-11-25 08:53:29,868 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:29" (1/1) ... [2019-11-25 08:53:29,874 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:53:29,875 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:53:29,875 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:53:29,875 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:53:29,876 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:29" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9874ce7d-bcb4-48ea-ac84-5a286631d532/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:53:29,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:53:29,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:53:30,144 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:53:30,144 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-25 08:53:30,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:53:30 BoogieIcfgContainer [2019-11-25 08:53:30,145 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:53:30,146 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:53:30,146 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:53:30,148 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:53:30,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:53:29" (1/3) ... [2019-11-25 08:53:30,149 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@686a59ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:53:30, skipping insertion in model container [2019-11-25 08:53:30,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:29" (2/3) ... [2019-11-25 08:53:30,150 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@686a59ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:53:30, skipping insertion in model container [2019-11-25 08:53:30,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:53:30" (3/3) ... [2019-11-25 08:53:30,154 INFO L109 eAbstractionObserver]: Analyzing ICFG sum01-2.i [2019-11-25 08:53:30,163 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:53:30,175 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-25 08:53:30,193 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-25 08:53:30,225 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:53:30,225 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-25 08:53:30,225 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:53:30,225 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:53:30,226 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:53:30,226 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:53:30,226 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:53:30,227 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:53:30,243 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2019-11-25 08:53:30,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-25 08:53:30,248 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:53:30,248 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-25 08:53:30,249 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:53:30,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:53:30,255 INFO L82 PathProgramCache]: Analyzing trace with hash 922230154, now seen corresponding path program 1 times [2019-11-25 08:53:30,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:53:30,263 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096768775] [2019-11-25 08:53:30,264 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:53:30,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:53:30,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:53:30,382 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096768775] [2019-11-25 08:53:30,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:53:30,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-25 08:53:30,385 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21554171] [2019-11-25 08:53:30,389 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-25 08:53:30,390 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:53:30,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-25 08:53:30,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-25 08:53:30,408 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 2 states. [2019-11-25 08:53:30,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:53:30,424 INFO L93 Difference]: Finished difference Result 18 states and 21 transitions. [2019-11-25 08:53:30,425 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-25 08:53:30,426 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2019-11-25 08:53:30,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:53:30,435 INFO L225 Difference]: With dead ends: 18 [2019-11-25 08:53:30,435 INFO L226 Difference]: Without dead ends: 8 [2019-11-25 08:53:30,438 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-25 08:53:30,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-11-25 08:53:30,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-11-25 08:53:30,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-25 08:53:30,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2019-11-25 08:53:30,471 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2019-11-25 08:53:30,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:53:30,472 INFO L462 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2019-11-25 08:53:30,472 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-25 08:53:30,472 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2019-11-25 08:53:30,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-25 08:53:30,472 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:53:30,472 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-25 08:53:30,473 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:53:30,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:53:30,473 INFO L82 PathProgramCache]: Analyzing trace with hash 922051408, now seen corresponding path program 1 times [2019-11-25 08:53:30,473 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:53:30,474 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647908709] [2019-11-25 08:53:30,474 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:53:30,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:53:30,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:53:30,535 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647908709] [2019-11-25 08:53:30,535 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:53:30,536 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-25 08:53:30,536 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635539055] [2019-11-25 08:53:30,537 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-25 08:53:30,537 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:53:30,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-25 08:53:30,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:53:30,538 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 4 states. [2019-11-25 08:53:30,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:53:30,573 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2019-11-25 08:53:30,574 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-25 08:53:30,574 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2019-11-25 08:53:30,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:53:30,575 INFO L225 Difference]: With dead ends: 13 [2019-11-25 08:53:30,575 INFO L226 Difference]: Without dead ends: 9 [2019-11-25 08:53:30,576 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:53:30,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2019-11-25 08:53:30,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2019-11-25 08:53:30,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-11-25 08:53:30,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2019-11-25 08:53:30,578 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2019-11-25 08:53:30,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:53:30,578 INFO L462 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2019-11-25 08:53:30,578 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-25 08:53:30,579 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2019-11-25 08:53:30,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-25 08:53:30,579 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:53:30,579 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:53:30,579 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:53:30,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:53:30,580 INFO L82 PathProgramCache]: Analyzing trace with hash 1381372562, now seen corresponding path program 1 times [2019-11-25 08:53:30,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:53:30,580 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720685283] [2019-11-25 08:53:30,580 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:53:30,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:53:30,835 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:53:30,835 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720685283] [2019-11-25 08:53:30,835 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033458788] [2019-11-25 08:53:30,836 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9874ce7d-bcb4-48ea-ac84-5a286631d532/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2019-11-25 08:53:30,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:53:30,878 WARN L253 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 15 conjunts are in the unsatisfiable core [2019-11-25 08:53:30,881 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:53:31,014 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:53:31,040 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:53:31,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:53:31,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2019-11-25 08:53:31,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566514672] [2019-11-25 08:53:31,041 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-25 08:53:31,042 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:53:31,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-25 08:53:31,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2019-11-25 08:53:31,043 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 13 states. [2019-11-25 08:53:31,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:53:31,246 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2019-11-25 08:53:31,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-25 08:53:31,246 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 8 [2019-11-25 08:53:31,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:53:31,247 INFO L225 Difference]: With dead ends: 19 [2019-11-25 08:53:31,247 INFO L226 Difference]: Without dead ends: 13 [2019-11-25 08:53:31,248 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2019-11-25 08:53:31,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-11-25 08:53:31,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-11-25 08:53:31,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-25 08:53:31,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2019-11-25 08:53:31,252 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 8 [2019-11-25 08:53:31,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:53:31,252 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2019-11-25 08:53:31,252 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-25 08:53:31,252 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2019-11-25 08:53:31,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-25 08:53:31,253 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:53:31,253 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1] [2019-11-25 08:53:31,454 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:53:31,454 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:53:31,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:53:31,454 INFO L82 PathProgramCache]: Analyzing trace with hash 693843862, now seen corresponding path program 2 times [2019-11-25 08:53:31,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:53:31,455 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667735920] [2019-11-25 08:53:31,455 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:53:31,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:53:31,655 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-25 08:53:31,656 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667735920] [2019-11-25 08:53:31,656 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74366368] [2019-11-25 08:53:31,656 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9874ce7d-bcb4-48ea-ac84-5a286631d532/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:53:31,689 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-25 08:53:31,689 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:53:31,690 WARN L253 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 23 conjunts are in the unsatisfiable core [2019-11-25 08:53:31,693 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:53:31,918 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:53:31,939 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:53:31,940 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:53:31,940 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11] total 17 [2019-11-25 08:53:31,940 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760801374] [2019-11-25 08:53:31,940 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-11-25 08:53:31,941 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:53:31,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-11-25 08:53:31,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2019-11-25 08:53:31,941 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 18 states. [2019-11-25 08:53:32,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:53:32,357 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2019-11-25 08:53:32,357 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-25 08:53:32,358 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 12 [2019-11-25 08:53:32,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:53:32,358 INFO L225 Difference]: With dead ends: 17 [2019-11-25 08:53:32,358 INFO L226 Difference]: Without dead ends: 0 [2019-11-25 08:53:32,359 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=136, Invalid=676, Unknown=0, NotChecked=0, Total=812 [2019-11-25 08:53:32,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-25 08:53:32,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-25 08:53:32,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-25 08:53:32,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-25 08:53:32,359 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2019-11-25 08:53:32,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:53:32,360 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:53:32,360 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-11-25 08:53:32,360 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-25 08:53:32,360 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-25 08:53:32,561 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:53:32,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-25 08:53:32,646 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-25 08:53:32,646 INFO L444 ceAbstractionStarter]: For program point L13(line 13) no Hoare annotation was computed. [2019-11-25 08:53:32,646 INFO L444 ceAbstractionStarter]: For program point L5(lines 5 7) no Hoare annotation was computed. [2019-11-25 08:53:32,647 INFO L447 ceAbstractionStarter]: At program point L5-2(lines 1 18) the Hoare annotation is: true [2019-11-25 08:53:32,647 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-25 08:53:32,647 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-25 08:53:32,647 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2019-11-25 08:53:32,647 INFO L444 ceAbstractionStarter]: For program point L14-2(lines 14 16) no Hoare annotation was computed. [2019-11-25 08:53:32,648 INFO L440 ceAbstractionStarter]: At program point L14-3(lines 14 16) the Hoare annotation is: (or (and (= ULTIMATE.start_main_~sn~0 0) (= ULTIMATE.start_main_~i~0 1)) (let ((.cse1 (* 2 ULTIMATE.start_main_~i~0)) (.cse0 (+ ULTIMATE.start_main_~sn~0 2))) (and (<= .cse0 .cse1) (<= .cse1 .cse0) (< ULTIMATE.start_main_~sn~0 (+ (* 2 ULTIMATE.start_main_~n~0) 1))))) [2019-11-25 08:53:32,648 INFO L444 ceAbstractionStarter]: For program point L14-4(lines 14 16) no Hoare annotation was computed. [2019-11-25 08:53:32,648 INFO L444 ceAbstractionStarter]: For program point L6(line 6) no Hoare annotation was computed. [2019-11-25 08:53:32,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:53:32 BoogieIcfgContainer [2019-11-25 08:53:32,665 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-25 08:53:32,666 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:53:32,666 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:53:32,667 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:53:32,667 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:53:30" (3/4) ... [2019-11-25 08:53:32,671 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-25 08:53:32,679 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-11-25 08:53:32,679 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-25 08:53:32,723 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_9874ce7d-bcb4-48ea-ac84-5a286631d532/bin/uautomizer/witness.graphml [2019-11-25 08:53:32,723 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:53:32,725 INFO L168 Benchmark]: Toolchain (without parser) took 3196.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.8 MB). Free memory was 951.4 MB in the beginning and 929.8 MB in the end (delta: 21.6 MB). Peak memory consumption was 178.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:53:32,726 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:53:32,727 INFO L168 Benchmark]: CACSL2BoogieTranslator took 283.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.8 MB). Free memory was 951.4 MB in the beginning and 1.2 GB in the end (delta: -202.8 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-11-25 08:53:32,727 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.01 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:53:32,728 INFO L168 Benchmark]: Boogie Preprocessor took 26.28 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-11-25 08:53:32,728 INFO L168 Benchmark]: RCFGBuilder took 270.42 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. [2019-11-25 08:53:32,729 INFO L168 Benchmark]: TraceAbstraction took 2519.47 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 929.8 MB in the end (delta: 198.0 MB). Peak memory consumption was 198.0 MB. Max. memory is 11.5 GB. [2019-11-25 08:53:32,729 INFO L168 Benchmark]: Witness Printer took 57.49 ms. Allocated memory is still 1.2 GB. Free memory is still 929.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:53:32,732 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 283.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.8 MB). Free memory was 951.4 MB in the beginning and 1.2 GB in the end (delta: -202.8 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 35.01 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 26.28 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 270.42 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2519.47 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 929.8 MB in the end (delta: 198.0 MB). Peak memory consumption was 198.0 MB. Max. memory is 11.5 GB. * Witness Printer took 57.49 ms. Allocated memory is still 1.2 GB. Free memory is still 929.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: 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 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (sn == 0 && i == 1) || ((sn + 2 <= 2 * i && 2 * i <= sn + 2) && sn < 2 * n + 1) - InvariantResult [Line: 1]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Result: SAFE, OverallTime: 2.4s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 24 SDtfs, 23 SDslu, 24 SDs, 0 SdLazy, 139 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 57 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 7 NumberOfFragments, 31 HoareAnnotationTreeSize, 2 FomulaSimplifications, 34 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 53 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 46 ConstructedInterpolants, 0 QuantifiedInterpolants, 3627 SizeOfPredicates, 10 NumberOfNonLiveVariables, 60 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 4/20 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...