./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 cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_07584165-8553-48fc-915f-fa3e687a9b4f/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_07584165-8553-48fc-915f-fa3e687a9b4f/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_07584165-8553-48fc-915f-fa3e687a9b4f/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_07584165-8553-48fc-915f-fa3e687a9b4f/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops/sum01-2.i -s /tmp/vcloud-vcloud-master/worker/working_dir_07584165-8553-48fc-915f-fa3e687a9b4f/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_07584165-8553-48fc-915f-fa3e687a9b4f/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-cad4683 [2019-10-22 08:56:51,107 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:56:51,109 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:56:51,119 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:56:51,120 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:56:51,121 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:56:51,122 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:56:51,124 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:56:51,126 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:56:51,129 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:56:51,131 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:56:51,132 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:56:51,137 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:56:51,140 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:56:51,140 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:56:51,141 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:56:51,141 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:56:51,142 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:56:51,143 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:56:51,144 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:56:51,145 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:56:51,149 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:56:51,151 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:56:51,153 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:56:51,154 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:56:51,157 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:56:51,157 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:56:51,158 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:56:51,158 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:56:51,159 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:56:51,159 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:56:51,159 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:56:51,160 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:56:51,160 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:56:51,161 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:56:51,161 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:56:51,161 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:56:51,161 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:56:51,162 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:56:51,164 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:56:51,166 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:56:51,166 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_07584165-8553-48fc-915f-fa3e687a9b4f/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-22 08:56:51,177 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:56:51,186 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:56:51,187 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:56:51,188 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:56:51,188 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:56:51,188 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:56:51,188 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 08:56:51,188 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:56:51,188 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 08:56:51,189 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:56:51,189 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 08:56:51,189 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 08:56:51,189 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 08:56:51,189 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 08:56:51,189 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 08:56:51,189 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:56:51,190 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 08:56:51,191 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:56:51,191 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:56:51,191 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 08:56:51,191 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 08:56:51,192 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 08:56:51,192 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:56:51,192 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 08:56:51,192 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 08:56:51,192 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 08:56:51,192 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 08:56:51,193 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 08:56:51,193 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/working_dir_07584165-8553-48fc-915f-fa3e687a9b4f/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 [2019-10-22 08:56:51,226 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:56:51,237 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:56:51,240 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:56:51,242 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:56:51,242 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:56:51,243 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_07584165-8553-48fc-915f-fa3e687a9b4f/bin/uautomizer/../../sv-benchmarks/c/loops/sum01-2.i [2019-10-22 08:56:51,292 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_07584165-8553-48fc-915f-fa3e687a9b4f/bin/uautomizer/data/8182d4496/547814a0d23f44d79474cba1d745d733/FLAGd56227cdf [2019-10-22 08:56:51,667 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:56:51,667 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_07584165-8553-48fc-915f-fa3e687a9b4f/sv-benchmarks/c/loops/sum01-2.i [2019-10-22 08:56:51,675 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_07584165-8553-48fc-915f-fa3e687a9b4f/bin/uautomizer/data/8182d4496/547814a0d23f44d79474cba1d745d733/FLAGd56227cdf [2019-10-22 08:56:51,687 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_07584165-8553-48fc-915f-fa3e687a9b4f/bin/uautomizer/data/8182d4496/547814a0d23f44d79474cba1d745d733 [2019-10-22 08:56:51,689 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:56:51,690 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 08:56:51,690 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:56:51,691 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:56:51,694 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:56:51,695 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:56:51" (1/1) ... [2019-10-22 08:56:51,696 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@377ddfcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:51, skipping insertion in model container [2019-10-22 08:56:51,696 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:56:51" (1/1) ... [2019-10-22 08:56:51,703 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:56:51,717 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:56:51,841 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:56:51,844 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:56:51,912 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:56:51,928 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:56:51,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:51 WrapperNode [2019-10-22 08:56:51,929 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:56:51,930 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 08:56:51,930 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 08:56:51,930 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 08:56:51,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:51" (1/1) ... [2019-10-22 08:56:51,943 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:51" (1/1) ... [2019-10-22 08:56:51,959 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 08:56:51,959 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:56:51,960 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:56:51,960 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:56:51,968 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:51" (1/1) ... [2019-10-22 08:56:51,968 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:51" (1/1) ... [2019-10-22 08:56:51,969 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:51" (1/1) ... [2019-10-22 08:56:51,969 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:51" (1/1) ... [2019-10-22 08:56:51,970 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:51" (1/1) ... [2019-10-22 08:56:51,974 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:51" (1/1) ... [2019-10-22 08:56:51,975 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:51" (1/1) ... [2019-10-22 08:56:51,976 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:56:51,976 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:56:51,976 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:56:51,976 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:56:51,977 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:51" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_07584165-8553-48fc-915f-fa3e687a9b4f/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 [2019-10-22 08:56:52,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:56:52,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:56:52,191 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:56:52,191 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-10-22 08:56:52,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:56:52 BoogieIcfgContainer [2019-10-22 08:56:52,192 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:56:52,194 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 08:56:52,195 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 08:56:52,199 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 08:56:52,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 08:56:51" (1/3) ... [2019-10-22 08:56:52,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ac03cd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:56:52, skipping insertion in model container [2019-10-22 08:56:52,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:51" (2/3) ... [2019-10-22 08:56:52,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ac03cd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:56:52, skipping insertion in model container [2019-10-22 08:56:52,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:56:52" (3/3) ... [2019-10-22 08:56:52,205 INFO L109 eAbstractionObserver]: Analyzing ICFG sum01-2.i [2019-10-22 08:56:52,213 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 08:56:52,218 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 08:56:52,227 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 08:56:52,244 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 08:56:52,244 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 08:56:52,244 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 08:56:52,244 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:56:52,245 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:56:52,245 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 08:56:52,245 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:56:52,245 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 08:56:52,257 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2019-10-22 08:56:52,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-10-22 08:56:52,271 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:52,272 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-10-22 08:56:52,274 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:56:52,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:52,279 INFO L82 PathProgramCache]: Analyzing trace with hash 922230154, now seen corresponding path program 1 times [2019-10-22 08:56:52,287 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:52,287 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393639123] [2019-10-22 08:56:52,287 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:52,288 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:52,288 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:52,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:52,368 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 08:56:52,368 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393639123] [2019-10-22 08:56:52,369 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:56:52,369 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 08:56:52,369 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55584894] [2019-10-22 08:56:52,373 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 08:56:52,373 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:52,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 08:56:52,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 08:56:52,384 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 2 states. [2019-10-22 08:56:52,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:52,403 INFO L93 Difference]: Finished difference Result 18 states and 21 transitions. [2019-10-22 08:56:52,403 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 08:56:52,404 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2019-10-22 08:56:52,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:52,415 INFO L225 Difference]: With dead ends: 18 [2019-10-22 08:56:52,415 INFO L226 Difference]: Without dead ends: 8 [2019-10-22 08:56:52,418 INFO L600 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 [2019-10-22 08:56:52,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-10-22 08:56:52,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-10-22 08:56:52,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-10-22 08:56:52,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2019-10-22 08:56:52,453 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2019-10-22 08:56:52,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:52,454 INFO L462 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2019-10-22 08:56:52,454 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 08:56:52,454 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2019-10-22 08:56:52,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-10-22 08:56:52,454 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:52,454 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-10-22 08:56:52,455 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:56:52,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:52,455 INFO L82 PathProgramCache]: Analyzing trace with hash 922051408, now seen corresponding path program 1 times [2019-10-22 08:56:52,455 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:52,455 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782989329] [2019-10-22 08:56:52,455 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:52,456 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:52,456 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:52,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:52,597 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 08:56:52,598 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782989329] [2019-10-22 08:56:52,598 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:56:52,598 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 08:56:52,598 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232392082] [2019-10-22 08:56:52,599 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 08:56:52,600 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:52,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 08:56:52,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 08:56:52,600 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 4 states. [2019-10-22 08:56:52,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:52,630 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2019-10-22 08:56:52,630 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 08:56:52,630 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2019-10-22 08:56:52,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:52,631 INFO L225 Difference]: With dead ends: 13 [2019-10-22 08:56:52,631 INFO L226 Difference]: Without dead ends: 9 [2019-10-22 08:56:52,632 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:56:52,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2019-10-22 08:56:52,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2019-10-22 08:56:52,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-10-22 08:56:52,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2019-10-22 08:56:52,643 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2019-10-22 08:56:52,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:52,643 INFO L462 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2019-10-22 08:56:52,643 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 08:56:52,643 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2019-10-22 08:56:52,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-10-22 08:56:52,644 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:52,644 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:56:52,644 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:56:52,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:52,645 INFO L82 PathProgramCache]: Analyzing trace with hash 1381372562, now seen corresponding path program 1 times [2019-10-22 08:56:52,645 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:52,645 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520545304] [2019-10-22 08:56:52,645 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:52,645 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:52,645 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:52,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:52,876 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:52,877 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520545304] [2019-10-22 08:56:52,877 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112116890] [2019-10-22 08:56:52,877 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_07584165-8553-48fc-915f-fa3e687a9b4f/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:56:52,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:52,905 WARN L254 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 15 conjunts are in the unsatisfiable core [2019-10-22 08:56:52,909 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:53,052 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 08:56:53,075 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:53,075 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:56:53,076 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2019-10-22 08:56:53,076 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606184761] [2019-10-22 08:56:53,076 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-10-22 08:56:53,076 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:53,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-10-22 08:56:53,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2019-10-22 08:56:53,077 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 13 states. [2019-10-22 08:56:53,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:53,267 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2019-10-22 08:56:53,268 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-22 08:56:53,268 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 8 [2019-10-22 08:56:53,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:53,268 INFO L225 Difference]: With dead ends: 19 [2019-10-22 08:56:53,268 INFO L226 Difference]: Without dead ends: 13 [2019-10-22 08:56:53,269 INFO L600 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 [2019-10-22 08:56:53,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-10-22 08:56:53,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-10-22 08:56:53,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-10-22 08:56:53,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2019-10-22 08:56:53,272 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 8 [2019-10-22 08:56:53,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:53,272 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2019-10-22 08:56:53,272 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-10-22 08:56:53,273 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2019-10-22 08:56:53,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-10-22 08:56:53,273 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:53,273 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1] [2019-10-22 08:56:53,474 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:56:53,475 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:56:53,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:53,475 INFO L82 PathProgramCache]: Analyzing trace with hash 693843862, now seen corresponding path program 2 times [2019-10-22 08:56:53,475 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:53,475 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606603702] [2019-10-22 08:56:53,475 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:53,475 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:53,476 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:53,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:53,677 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-22 08:56:53,677 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606603702] [2019-10-22 08:56:53,677 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725100491] [2019-10-22 08:56:53,677 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_07584165-8553-48fc-915f-fa3e687a9b4f/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 [2019-10-22 08:56:53,712 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-22 08:56:53,712 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 08:56:53,715 WARN L254 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 23 conjunts are in the unsatisfiable core [2019-10-22 08:56:53,716 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:53,871 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 08:56:53,887 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:53,887 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:56:53,887 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11] total 17 [2019-10-22 08:56:53,887 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307781695] [2019-10-22 08:56:53,888 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-10-22 08:56:53,888 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:53,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-10-22 08:56:53,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2019-10-22 08:56:53,889 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 18 states. [2019-10-22 08:56:54,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:54,227 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2019-10-22 08:56:54,227 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-22 08:56:54,227 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 12 [2019-10-22 08:56:54,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:54,228 INFO L225 Difference]: With dead ends: 17 [2019-10-22 08:56:54,228 INFO L226 Difference]: Without dead ends: 0 [2019-10-22 08:56:54,229 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=136, Invalid=676, Unknown=0, NotChecked=0, Total=812 [2019-10-22 08:56:54,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-22 08:56:54,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-22 08:56:54,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-22 08:56:54,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 08:56:54,229 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2019-10-22 08:56:54,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:54,230 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:56:54,230 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-10-22 08:56:54,230 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-22 08:56:54,230 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-22 08:56:54,431 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:56:54,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-22 08:56:54,488 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-22 08:56:54,489 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2019-10-22 08:56:54,489 INFO L443 ceAbstractionStarter]: For program point L13(line 13) no Hoare annotation was computed. [2019-10-22 08:56:54,489 INFO L443 ceAbstractionStarter]: For program point L5(lines 5 7) no Hoare annotation was computed. [2019-10-22 08:56:54,489 INFO L446 ceAbstractionStarter]: At program point L5-2(lines 1 18) the Hoare annotation is: true [2019-10-22 08:56:54,489 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-10-22 08:56:54,490 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-22 08:56:54,490 INFO L443 ceAbstractionStarter]: For program point L14-2(lines 14 16) no Hoare annotation was computed. [2019-10-22 08:56:54,490 INFO L439 ceAbstractionStarter]: At program point L14-3(lines 14 16) the Hoare annotation is: (or (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)))) (and (= ULTIMATE.start_main_~sn~0 0) (= ULTIMATE.start_main_~i~0 1))) [2019-10-22 08:56:54,490 INFO L443 ceAbstractionStarter]: For program point L14-4(lines 14 16) no Hoare annotation was computed. [2019-10-22 08:56:54,490 INFO L443 ceAbstractionStarter]: For program point L6(line 6) no Hoare annotation was computed. [2019-10-22 08:56:54,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 08:56:54 BoogieIcfgContainer [2019-10-22 08:56:54,504 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 08:56:54,504 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:56:54,504 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:56:54,504 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:56:54,505 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:56:52" (3/4) ... [2019-10-22 08:56:54,511 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-10-22 08:56:54,518 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-10-22 08:56:54,519 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-10-22 08:56:54,551 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_07584165-8553-48fc-915f-fa3e687a9b4f/bin/uautomizer/witness.graphml [2019-10-22 08:56:54,552 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:56:54,554 INFO L168 Benchmark]: Toolchain (without parser) took 2863.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 168.8 MB). Free memory was 945.8 MB in the beginning and 947.2 MB in the end (delta: -1.4 MB). Peak memory consumption was 167.4 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:54,554 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:56:54,555 INFO L168 Benchmark]: CACSL2BoogieTranslator took 238.65 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 168.8 MB). Free memory was 945.8 MB in the beginning and 1.2 GB in the end (delta: -217.7 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:54,555 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.72 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. [2019-10-22 08:56:54,555 INFO L168 Benchmark]: Boogie Preprocessor took 16.34 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. [2019-10-22 08:56:54,556 INFO L168 Benchmark]: RCFGBuilder took 216.37 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: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:54,556 INFO L168 Benchmark]: TraceAbstraction took 2309.87 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 952.6 MB in the end (delta: 193.9 MB). Peak memory consumption was 193.9 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:54,557 INFO L168 Benchmark]: Witness Printer took 47.71 ms. Allocated memory is still 1.2 GB. Free memory was 952.6 MB in the beginning and 947.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:54,559 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 238.65 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 168.8 MB). Free memory was 945.8 MB in the beginning and 1.2 GB in the end (delta: -217.7 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 29.72 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 16.34 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. * RCFGBuilder took 216.37 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: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2309.87 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 952.6 MB in the end (delta: 193.9 MB). Peak memory consumption was 193.9 MB. Max. memory is 11.5 GB. * Witness Printer took 47.71 ms. Allocated memory is still 1.2 GB. Free memory was 952.6 MB in the beginning and 947.2 MB 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: 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 + 2 <= 2 * i && 2 * i <= sn + 2) && sn < 2 * n + 1) || (sn == 0 && i == 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: 2.2s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 0.6s, 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, 1.0s 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, 0.8s 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...