./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/trex01-2.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_bc531e1e-1655-4308-a021-52228b13eadb/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_bc531e1e-1655-4308-a021-52228b13eadb/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_bc531e1e-1655-4308-a021-52228b13eadb/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_bc531e1e-1655-4308-a021-52228b13eadb/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops/trex01-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_bc531e1e-1655-4308-a021-52228b13eadb/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_bc531e1e-1655-4308-a021-52228b13eadb/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 ac73664c6b6c540fa41a6c75f0a1d02ae5fcc2e0 .............................................................................................................................................................................................................................................................................................. 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 08:52:48,652 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:52:48,654 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:52:48,664 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:52:48,665 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:52:48,666 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:52:48,667 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:52:48,669 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:52:48,671 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:52:48,672 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:52:48,673 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:52:48,674 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:52:48,674 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:52:48,675 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:52:48,676 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:52:48,677 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:52:48,678 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:52:48,679 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:52:48,680 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:52:48,682 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:52:48,684 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:52:48,685 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:52:48,686 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:52:48,687 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:52:48,689 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:52:48,689 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:52:48,690 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:52:48,690 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:52:48,691 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:52:48,692 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:52:48,692 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:52:48,693 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:52:48,693 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:52:48,694 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:52:48,695 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:52:48,695 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:52:48,696 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:52:48,696 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:52:48,696 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:52:48,697 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:52:48,698 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:52:48,698 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_bc531e1e-1655-4308-a021-52228b13eadb/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-25 08:52:48,711 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:52:48,711 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:52:48,712 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:52:48,712 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:52:48,713 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:52:48,713 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:52:48,713 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:52:48,713 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:52:48,714 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:52:48,714 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:52:48,714 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-25 08:52:48,714 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:52:48,714 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-25 08:52:48,715 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:52:48,715 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:52:48,715 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:52:48,715 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-25 08:52:48,716 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:52:48,716 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:52:48,716 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:52:48,716 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:52:48,716 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:52:48,717 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:52:48,717 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:52:48,717 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-25 08:52:48,717 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-25 08:52:48,718 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-25 08:52:48,718 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-25 08:52:48,718 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_bc531e1e-1655-4308-a021-52228b13eadb/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 -> ac73664c6b6c540fa41a6c75f0a1d02ae5fcc2e0 [2019-11-25 08:52:48,861 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:52:48,873 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:52:48,877 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:52:48,878 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:52:48,879 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:52:48,879 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_bc531e1e-1655-4308-a021-52228b13eadb/bin/uautomizer/../../sv-benchmarks/c/loops/trex01-2.i [2019-11-25 08:52:48,945 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bc531e1e-1655-4308-a021-52228b13eadb/bin/uautomizer/data/787c0d313/e1f4cfac17ce44ee949c37ae9dcac87e/FLAG662857bda [2019-11-25 08:52:49,320 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:52:49,321 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_bc531e1e-1655-4308-a021-52228b13eadb/sv-benchmarks/c/loops/trex01-2.i [2019-11-25 08:52:49,327 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bc531e1e-1655-4308-a021-52228b13eadb/bin/uautomizer/data/787c0d313/e1f4cfac17ce44ee949c37ae9dcac87e/FLAG662857bda [2019-11-25 08:52:49,704 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_bc531e1e-1655-4308-a021-52228b13eadb/bin/uautomizer/data/787c0d313/e1f4cfac17ce44ee949c37ae9dcac87e [2019-11-25 08:52:49,710 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:52:49,711 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:52:49,712 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:52:49,712 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:52:49,715 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:52:49,716 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:52:49" (1/1) ... [2019-11-25 08:52:49,718 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19a2d7d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:49, skipping insertion in model container [2019-11-25 08:52:49,718 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:52:49" (1/1) ... [2019-11-25 08:52:49,725 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:52:49,740 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:52:49,906 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:52:49,910 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:52:49,988 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:52:50,001 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:52:50,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:50 WrapperNode [2019-11-25 08:52:50,002 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:52:50,002 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:52:50,003 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:52:50,003 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:52:50,010 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:50" (1/1) ... [2019-11-25 08:52:50,015 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:50" (1/1) ... [2019-11-25 08:52:50,035 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:52:50,035 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:52:50,036 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:52:50,036 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:52:50,044 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:50" (1/1) ... [2019-11-25 08:52:50,044 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:50" (1/1) ... [2019-11-25 08:52:50,046 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:50" (1/1) ... [2019-11-25 08:52:50,046 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:50" (1/1) ... [2019-11-25 08:52:50,060 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:50" (1/1) ... [2019-11-25 08:52:50,065 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:50" (1/1) ... [2019-11-25 08:52:50,068 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:50" (1/1) ... [2019-11-25 08:52:50,078 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:52:50,079 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:52:50,079 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:52:50,079 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:52:50,080 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:50" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bc531e1e-1655-4308-a021-52228b13eadb/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 08:52:50,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:52:50,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:52:50,439 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:52:50,439 INFO L284 CfgBuilder]: Removed 16 assume(true) statements. [2019-11-25 08:52:50,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:52:50 BoogieIcfgContainer [2019-11-25 08:52:50,440 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:52:50,441 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:52:50,441 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:52:50,443 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:52:50,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:52:49" (1/3) ... [2019-11-25 08:52:50,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2472b075 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:52:50, skipping insertion in model container [2019-11-25 08:52:50,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:50" (2/3) ... [2019-11-25 08:52:50,445 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2472b075 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:52:50, skipping insertion in model container [2019-11-25 08:52:50,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:52:50" (3/3) ... [2019-11-25 08:52:50,457 INFO L109 eAbstractionObserver]: Analyzing ICFG trex01-2.i [2019-11-25 08:52:50,482 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:52:50,488 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-11-25 08:52:50,510 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-11-25 08:52:50,552 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:52:50,552 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-25 08:52:50,552 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:52:50,553 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:52:50,553 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:52:50,553 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:52:50,553 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:52:50,553 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:52:50,570 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2019-11-25 08:52:50,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-25 08:52:50,575 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:52:50,576 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:52:50,576 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:52:50,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:50,582 INFO L82 PathProgramCache]: Analyzing trace with hash -1540372082, now seen corresponding path program 1 times [2019-11-25 08:52:50,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:52:50,590 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972794907] [2019-11-25 08:52:50,590 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:52:50,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:52:50,732 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 08:52:50,732 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972794907] [2019-11-25 08:52:50,733 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:52:50,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-25 08:52:50,735 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254708231] [2019-11-25 08:52:50,739 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-25 08:52:50,739 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:52:50,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-25 08:52:50,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:52:50,750 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 4 states. [2019-11-25 08:52:50,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:52:50,840 INFO L93 Difference]: Finished difference Result 64 states and 101 transitions. [2019-11-25 08:52:50,840 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-25 08:52:50,841 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2019-11-25 08:52:50,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:52:50,846 INFO L225 Difference]: With dead ends: 64 [2019-11-25 08:52:50,846 INFO L226 Difference]: Without dead ends: 0 [2019-11-25 08:52:50,849 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:52:50,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-25 08:52:50,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-25 08:52:50,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-25 08:52:50,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-25 08:52:50,867 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2019-11-25 08:52:50,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:52:50,867 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:52:50,867 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-25 08:52:50,867 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-25 08:52:50,867 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-25 08:52:50,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-25 08:52:50,927 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-11-25 08:52:50,927 INFO L440 ceAbstractionStarter]: At program point L11-1(lines 11 33) the Hoare annotation is: (or (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= 1 ULTIMATE.start_f_~z~0)) [2019-11-25 08:52:50,927 INFO L444 ceAbstractionStarter]: For program point L36(lines 36 40) no Hoare annotation was computed. [2019-11-25 08:52:50,927 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-25 08:52:50,927 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-25 08:52:50,928 INFO L444 ceAbstractionStarter]: For program point L20(line 20) no Hoare annotation was computed. [2019-11-25 08:52:50,928 INFO L444 ceAbstractionStarter]: For program point L20-2(line 20) no Hoare annotation was computed. [2019-11-25 08:52:50,928 INFO L444 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-11-25 08:52:50,928 INFO L440 ceAbstractionStarter]: At program point L4-2(line 19) the Hoare annotation is: (and (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= 1 ULTIMATE.start_f_~z~0)) [2019-11-25 08:52:50,928 INFO L444 ceAbstractionStarter]: For program point L4-3(lines 4 6) no Hoare annotation was computed. [2019-11-25 08:52:50,928 INFO L440 ceAbstractionStarter]: At program point L4-5(line 19) the Hoare annotation is: (and (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= 1 ULTIMATE.start_f_~z~0)) [2019-11-25 08:52:50,929 INFO L444 ceAbstractionStarter]: For program point L21(line 21) no Hoare annotation was computed. [2019-11-25 08:52:50,929 INFO L444 ceAbstractionStarter]: For program point L21-2(line 21) no Hoare annotation was computed. [2019-11-25 08:52:50,929 INFO L444 ceAbstractionStarter]: For program point L13(lines 13 15) no Hoare annotation was computed. [2019-11-25 08:52:50,929 INFO L444 ceAbstractionStarter]: For program point L13-1(lines 13 15) no Hoare annotation was computed. [2019-11-25 08:52:50,929 INFO L444 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-11-25 08:52:50,929 INFO L444 ceAbstractionStarter]: For program point L5-1(line 5) no Hoare annotation was computed. [2019-11-25 08:52:50,929 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-11-25 08:52:50,930 INFO L444 ceAbstractionStarter]: For program point L24(lines 24 31) no Hoare annotation was computed. [2019-11-25 08:52:50,930 INFO L440 ceAbstractionStarter]: At program point L24-2(lines 22 32) the Hoare annotation is: (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) [2019-11-25 08:52:50,930 INFO L444 ceAbstractionStarter]: For program point L24-3(lines 24 31) no Hoare annotation was computed. [2019-11-25 08:52:50,930 INFO L440 ceAbstractionStarter]: At program point L24-5(lines 22 32) the Hoare annotation is: (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) [2019-11-25 08:52:50,930 INFO L440 ceAbstractionStarter]: At program point L16-2(line 16) the Hoare annotation is: (<= 1 ULTIMATE.start_f_~z~0) [2019-11-25 08:52:50,930 INFO L444 ceAbstractionStarter]: For program point L16-3(line 16) no Hoare annotation was computed. [2019-11-25 08:52:50,931 INFO L440 ceAbstractionStarter]: At program point L16-6(line 16) the Hoare annotation is: (<= 1 ULTIMATE.start_f_~z~0) [2019-11-25 08:52:50,931 INFO L444 ceAbstractionStarter]: For program point L16-7(line 16) no Hoare annotation was computed. [2019-11-25 08:52:50,931 INFO L440 ceAbstractionStarter]: At program point L41(lines 34 42) the Hoare annotation is: (or (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= 1 ULTIMATE.start_f_~z~0)) [2019-11-25 08:52:50,931 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-25 08:52:50,931 INFO L444 ceAbstractionStarter]: For program point L25(lines 25 26) no Hoare annotation was computed. [2019-11-25 08:52:50,931 INFO L444 ceAbstractionStarter]: For program point L25-1(lines 25 26) no Hoare annotation was computed. [2019-11-25 08:52:50,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:52:50 BoogieIcfgContainer [2019-11-25 08:52:50,948 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-25 08:52:50,949 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:52:50,949 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:52:50,949 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:52:50,950 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:52:50" (3/4) ... [2019-11-25 08:52:50,953 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-25 08:52:50,972 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2019-11-25 08:52:50,972 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-25 08:52:51,032 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_bc531e1e-1655-4308-a021-52228b13eadb/bin/uautomizer/witness.graphml [2019-11-25 08:52:51,033 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:52:51,034 INFO L168 Benchmark]: Toolchain (without parser) took 1323.05 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 950.2 MB in the beginning and 1.1 GB in the end (delta: -124.8 MB). Peak memory consumption was 16.7 MB. Max. memory is 11.5 GB. [2019-11-25 08:52:51,035 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:52:51,035 INFO L168 Benchmark]: CACSL2BoogieTranslator took 290.20 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 950.2 MB in the beginning and 1.1 GB in the end (delta: -187.5 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. [2019-11-25 08:52:51,036 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.89 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-11-25 08:52:51,036 INFO L168 Benchmark]: Boogie Preprocessor took 43.16 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. [2019-11-25 08:52:51,037 INFO L168 Benchmark]: RCFGBuilder took 361.36 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: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:52:51,037 INFO L168 Benchmark]: TraceAbstraction took 507.43 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: 32.2 MB). Peak memory consumption was 32.2 MB. Max. memory is 11.5 GB. [2019-11-25 08:52:51,038 INFO L168 Benchmark]: Witness Printer took 83.74 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:52:51,040 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 290.20 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 950.2 MB in the beginning and 1.1 GB in the end (delta: -187.5 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 32.89 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 43.16 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 361.36 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: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 507.43 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: 32.2 MB). Peak memory consumption was 32.2 MB. Max. memory is 11.5 GB. * Witness Printer took 83.74 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: !(0 == cond) && 1 <= z - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: !(0 == cond) || 1 <= z - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 1 <= z - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: !(0 == cond) - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: !(0 == cond) && 1 <= z - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: !(0 == cond) - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 1 <= z - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: !(0 == cond) || 1 <= z - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 30 locations, 2 error locations. Result: SAFE, OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 33 SDtfs, 69 SDslu, 22 SDs, 0 SdLazy, 16 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 20 NumberOfFragments, 46 HoareAnnotationTreeSize, 8 FomulaSimplifications, 34 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 90 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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...