./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-lit/bhmr2007.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_87faba0d-21d5-44f9-ac08-8775f3022151/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_87faba0d-21d5-44f9-ac08-8775f3022151/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_87faba0d-21d5-44f9-ac08-8775f3022151/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_87faba0d-21d5-44f9-ac08-8775f3022151/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-lit/bhmr2007.i -s /tmp/vcloud-vcloud-master/worker/run_dir_87faba0d-21d5-44f9-ac08-8775f3022151/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_87faba0d-21d5-44f9-ac08-8775f3022151/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 cc52fae450c71cb08003ff68124573964734a280 ...................................................................................................................................................................................................................................................................................................................................................................................................... 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 08:52:15,111 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:52:15,113 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:52:15,123 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:52:15,123 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:52:15,124 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:52:15,125 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:52:15,127 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:52:15,129 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:52:15,130 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:52:15,131 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:52:15,132 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:52:15,132 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:52:15,133 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:52:15,138 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:52:15,139 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:52:15,140 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:52:15,141 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:52:15,142 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:52:15,144 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:52:15,146 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:52:15,147 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:52:15,148 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:52:15,149 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:52:15,162 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:52:15,163 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:52:15,164 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:52:15,166 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:52:15,166 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:52:15,168 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:52:15,168 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:52:15,169 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:52:15,169 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:52:15,170 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:52:15,172 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:52:15,173 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:52:15,173 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:52:15,173 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:52:15,174 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:52:15,177 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:52:15,178 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:52:15,179 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_87faba0d-21d5-44f9-ac08-8775f3022151/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-25 08:52:15,191 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:52:15,191 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:52:15,192 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:52:15,193 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:52:15,193 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:52:15,193 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:52:15,193 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:52:15,194 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:52:15,194 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:52:15,194 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:52:15,194 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-25 08:52:15,194 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:52:15,195 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-25 08:52:15,195 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:52:15,195 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:52:15,195 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:52:15,195 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-25 08:52:15,196 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:52:15,196 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:52:15,196 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:52:15,196 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:52:15,197 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:52:15,197 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:52:15,197 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:52:15,197 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-25 08:52:15,198 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-25 08:52:15,198 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-25 08:52:15,198 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-25 08:52:15,198 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_87faba0d-21d5-44f9-ac08-8775f3022151/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 -> cc52fae450c71cb08003ff68124573964734a280 [2019-11-25 08:52:15,328 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:52:15,340 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:52:15,343 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:52:15,346 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:52:15,350 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:52:15,351 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_87faba0d-21d5-44f9-ac08-8775f3022151/bin/uautomizer/../../sv-benchmarks/c/loop-lit/bhmr2007.i [2019-11-25 08:52:15,406 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_87faba0d-21d5-44f9-ac08-8775f3022151/bin/uautomizer/data/57967cc8f/f510e0e5b6bd4258b0c752c7c790359b/FLAG2125151f5 [2019-11-25 08:52:15,803 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:52:15,803 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_87faba0d-21d5-44f9-ac08-8775f3022151/sv-benchmarks/c/loop-lit/bhmr2007.i [2019-11-25 08:52:15,809 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_87faba0d-21d5-44f9-ac08-8775f3022151/bin/uautomizer/data/57967cc8f/f510e0e5b6bd4258b0c752c7c790359b/FLAG2125151f5 [2019-11-25 08:52:15,824 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_87faba0d-21d5-44f9-ac08-8775f3022151/bin/uautomizer/data/57967cc8f/f510e0e5b6bd4258b0c752c7c790359b [2019-11-25 08:52:15,827 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:52:15,829 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:52:15,830 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:52:15,831 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:52:15,834 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:52:15,835 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:52:15" (1/1) ... [2019-11-25 08:52:15,837 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7edc44e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:15, skipping insertion in model container [2019-11-25 08:52:15,838 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:52:15" (1/1) ... [2019-11-25 08:52:15,844 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:52:15,860 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:52:16,025 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:52:16,029 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:52:16,111 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:52:16,125 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:52:16,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:16 WrapperNode [2019-11-25 08:52:16,126 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:52:16,127 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:52:16,127 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:52:16,127 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:52:16,136 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:16" (1/1) ... [2019-11-25 08:52:16,141 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:16" (1/1) ... [2019-11-25 08:52:16,160 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:52:16,162 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:52:16,162 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:52:16,162 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:52:16,171 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:16" (1/1) ... [2019-11-25 08:52:16,171 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:16" (1/1) ... [2019-11-25 08:52:16,172 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:16" (1/1) ... [2019-11-25 08:52:16,172 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:16" (1/1) ... [2019-11-25 08:52:16,174 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:16" (1/1) ... [2019-11-25 08:52:16,180 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:16" (1/1) ... [2019-11-25 08:52:16,184 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:16" (1/1) ... [2019-11-25 08:52:16,189 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:52:16,189 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:52:16,190 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:52:16,190 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:52:16,191 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:16" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_87faba0d-21d5-44f9-ac08-8775f3022151/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 08:52:16,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:52:16,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:52:16,424 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:52:16,425 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-25 08:52:16,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:52:16 BoogieIcfgContainer [2019-11-25 08:52:16,426 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:52:16,427 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:52:16,427 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:52:16,429 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:52:16,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:52:15" (1/3) ... [2019-11-25 08:52:16,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e630ef4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:52:16, skipping insertion in model container [2019-11-25 08:52:16,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:16" (2/3) ... [2019-11-25 08:52:16,431 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e630ef4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:52:16, skipping insertion in model container [2019-11-25 08:52:16,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:52:16" (3/3) ... [2019-11-25 08:52:16,433 INFO L109 eAbstractionObserver]: Analyzing ICFG bhmr2007.i [2019-11-25 08:52:16,441 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:52:16,446 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-25 08:52:16,456 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-25 08:52:16,486 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:52:16,487 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-25 08:52:16,487 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:52:16,487 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:52:16,487 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:52:16,487 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:52:16,497 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:52:16,497 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:52:16,509 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2019-11-25 08:52:16,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-25 08:52:16,514 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:52:16,515 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-25 08:52:16,515 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:52:16,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:16,520 INFO L82 PathProgramCache]: Analyzing trace with hash 922414858, now seen corresponding path program 1 times [2019-11-25 08:52:16,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:52:16,529 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871231862] [2019-11-25 08:52:16,529 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:52:16,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:52:16,631 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 08:52:16,632 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871231862] [2019-11-25 08:52:16,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:52:16,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-25 08:52:16,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24746340] [2019-11-25 08:52:16,639 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-25 08:52:16,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:52:16,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-25 08:52:16,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-25 08:52:16,651 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 2 states. [2019-11-25 08:52:16,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:52:16,664 INFO L93 Difference]: Finished difference Result 21 states and 25 transitions. [2019-11-25 08:52:16,664 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-25 08:52:16,665 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2019-11-25 08:52:16,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:52:16,673 INFO L225 Difference]: With dead ends: 21 [2019-11-25 08:52:16,673 INFO L226 Difference]: Without dead ends: 9 [2019-11-25 08:52:16,675 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 08:52:16,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2019-11-25 08:52:16,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2019-11-25 08:52:16,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-11-25 08:52:16,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2019-11-25 08:52:16,702 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2019-11-25 08:52:16,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:52:16,703 INFO L462 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2019-11-25 08:52:16,703 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-25 08:52:16,703 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2019-11-25 08:52:16,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-25 08:52:16,703 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:52:16,703 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-25 08:52:16,704 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:52:16,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:16,704 INFO L82 PathProgramCache]: Analyzing trace with hash 922087157, now seen corresponding path program 1 times [2019-11-25 08:52:16,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:52:16,705 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535298538] [2019-11-25 08:52:16,705 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:52:16,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:52:16,922 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 08:52:16,923 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535298538] [2019-11-25 08:52:16,923 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:52:16,923 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-25 08:52:16,923 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034336114] [2019-11-25 08:52:16,925 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-25 08:52:16,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:52:16,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-25 08:52:16,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-25 08:52:16,926 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand 6 states. [2019-11-25 08:52:16,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:52:16,999 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2019-11-25 08:52:16,999 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-25 08:52:16,999 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2019-11-25 08:52:17,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:52:17,001 INFO L225 Difference]: With dead ends: 15 [2019-11-25 08:52:17,001 INFO L226 Difference]: Without dead ends: 11 [2019-11-25 08:52:17,002 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-25 08:52:17,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-11-25 08:52:17,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2019-11-25 08:52:17,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-25 08:52:17,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2019-11-25 08:52:17,007 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 6 [2019-11-25 08:52:17,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:52:17,007 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2019-11-25 08:52:17,007 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-25 08:52:17,007 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2019-11-25 08:52:17,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-25 08:52:17,008 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:52:17,008 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:52:17,008 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:52:17,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:17,009 INFO L82 PathProgramCache]: Analyzing trace with hash 826668156, now seen corresponding path program 1 times [2019-11-25 08:52:17,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:52:17,009 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347324011] [2019-11-25 08:52:17,009 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:52:17,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:52:17,248 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 08:52:17,249 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347324011] [2019-11-25 08:52:17,249 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895278035] [2019-11-25 08:52:17,249 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_87faba0d-21d5-44f9-ac08-8775f3022151/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 [2019-11-25 08:52:17,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:52:17,285 WARN L253 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 19 conjunts are in the unsatisfiable core [2019-11-25 08:52:17,289 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:52:17,444 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:52:17,470 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 08:52:17,470 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:52:17,471 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2019-11-25 08:52:17,471 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932428700] [2019-11-25 08:52:17,471 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-25 08:52:17,471 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:52:17,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-25 08:52:17,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2019-11-25 08:52:17,472 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand 14 states. [2019-11-25 08:52:17,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:52:17,775 INFO L93 Difference]: Finished difference Result 23 states and 28 transitions. [2019-11-25 08:52:17,776 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-25 08:52:17,776 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 9 [2019-11-25 08:52:17,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:52:17,776 INFO L225 Difference]: With dead ends: 23 [2019-11-25 08:52:17,777 INFO L226 Difference]: Without dead ends: 17 [2019-11-25 08:52:17,778 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2019-11-25 08:52:17,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-11-25 08:52:17,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2019-11-25 08:52:17,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-25 08:52:17,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2019-11-25 08:52:17,782 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 9 [2019-11-25 08:52:17,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:52:17,782 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2019-11-25 08:52:17,782 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-25 08:52:17,782 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2019-11-25 08:52:17,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-25 08:52:17,783 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:52:17,783 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:52:17,983 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:52:17,984 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:52:17,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:17,984 INFO L82 PathProgramCache]: Analyzing trace with hash -2147349609, now seen corresponding path program 1 times [2019-11-25 08:52:17,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:52:17,984 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372769784] [2019-11-25 08:52:17,984 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:52:18,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:52:18,202 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-25 08:52:18,202 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372769784] [2019-11-25 08:52:18,203 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970088399] [2019-11-25 08:52:18,203 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_87faba0d-21d5-44f9-ac08-8775f3022151/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 08:52:18,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:52:18,241 WARN L253 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 25 conjunts are in the unsatisfiable core [2019-11-25 08:52:18,242 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:52:18,421 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:52:18,439 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:52:18,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:52:18,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2019-11-25 08:52:18,440 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089200768] [2019-11-25 08:52:18,440 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-11-25 08:52:18,440 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:52:18,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-11-25 08:52:18,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2019-11-25 08:52:18,441 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand 17 states. [2019-11-25 08:52:18,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:52:18,930 INFO L93 Difference]: Finished difference Result 24 states and 30 transitions. [2019-11-25 08:52:18,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-11-25 08:52:18,931 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 12 [2019-11-25 08:52:18,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:52:18,931 INFO L225 Difference]: With dead ends: 24 [2019-11-25 08:52:18,931 INFO L226 Difference]: Without dead ends: 0 [2019-11-25 08:52:18,932 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=156, Invalid=714, Unknown=0, NotChecked=0, Total=870 [2019-11-25 08:52:18,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-25 08:52:18,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-25 08:52:18,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-25 08:52:18,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-25 08:52:18,933 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2019-11-25 08:52:18,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:52:18,934 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:52:18,934 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-11-25 08:52:18,934 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-25 08:52:18,934 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-25 08:52:19,137 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:52:19,140 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-25 08:52:19,193 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-25 08:52:19,193 INFO L447 ceAbstractionStarter]: At program point L25(lines 10 26) the Hoare annotation is: true [2019-11-25 08:52:19,193 INFO L444 ceAbstractionStarter]: For program point L15(lines 15 21) no Hoare annotation was computed. [2019-11-25 08:52:19,193 INFO L444 ceAbstractionStarter]: For program point L13(line 13) no Hoare annotation was computed. [2019-11-25 08:52:19,193 INFO L444 ceAbstractionStarter]: For program point L15-2(lines 15 21) no Hoare annotation was computed. [2019-11-25 08:52:19,193 INFO L444 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-11-25 08:52:19,194 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-25 08:52:19,194 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-25 08:52:19,194 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-11-25 08:52:19,194 INFO L440 ceAbstractionStarter]: At program point L14-2(lines 14 23) the Hoare annotation is: (let ((.cse1 (* 3 ULTIMATE.start_main_~i~0)) (.cse0 (+ ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~b~0))) (and (< .cse0 (+ (* 3 ULTIMATE.start_main_~n~0) 1)) (<= .cse0 .cse1) (<= .cse1 .cse0))) [2019-11-25 08:52:19,194 INFO L444 ceAbstractionStarter]: For program point L14-3(lines 14 23) no Hoare annotation was computed. [2019-11-25 08:52:19,194 INFO L444 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-11-25 08:52:19,195 INFO L447 ceAbstractionStarter]: At program point L4-2(lines 3 8) the Hoare annotation is: true [2019-11-25 08:52:19,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:52:19 BoogieIcfgContainer [2019-11-25 08:52:19,207 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-25 08:52:19,207 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:52:19,207 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:52:19,207 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:52:19,208 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:52:16" (3/4) ... [2019-11-25 08:52:19,211 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-25 08:52:19,220 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-11-25 08:52:19,220 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-25 08:52:19,274 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_87faba0d-21d5-44f9-ac08-8775f3022151/bin/uautomizer/witness.graphml [2019-11-25 08:52:19,275 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:52:19,277 INFO L168 Benchmark]: Toolchain (without parser) took 3447.52 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -191.5 MB). Peak memory consumption was 216.5 MB. Max. memory is 11.5 GB. [2019-11-25 08:52:19,280 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:52:19,281 INFO L168 Benchmark]: CACSL2BoogieTranslator took 296.40 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -193.4 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-11-25 08:52:19,281 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.69 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 08:52:19,282 INFO L168 Benchmark]: Boogie Preprocessor took 27.23 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 08:52:19,283 INFO L168 Benchmark]: RCFGBuilder took 236.51 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: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. [2019-11-25 08:52:19,286 INFO L168 Benchmark]: TraceAbstraction took 2779.96 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 884.5 MB in the end (delta: 236.5 MB). Peak memory consumption was 236.5 MB. Max. memory is 11.5 GB. [2019-11-25 08:52:19,287 INFO L168 Benchmark]: Witness Printer took 68.00 ms. Allocated memory is still 1.2 GB. Free memory was 884.5 MB in the beginning and 1.1 GB in the end (delta: -253.2 MB). Peak memory consumption was 10.1 MB. Max. memory is 11.5 GB. [2019-11-25 08:52:19,289 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 296.40 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -193.4 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 34.69 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 27.23 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 236.51 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: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2779.96 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 884.5 MB in the end (delta: 236.5 MB). Peak memory consumption was 236.5 MB. Max. memory is 11.5 GB. * Witness Printer took 68.00 ms. Allocated memory is still 1.2 GB. Free memory was 884.5 MB in the beginning and 1.1 GB in the end (delta: -253.2 MB). Peak memory consumption was 10.1 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (a + b < 3 * n + 1 && a + b <= 3 * i) && 3 * i <= a + b - InvariantResult [Line: 3]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Result: SAFE, OverallTime: 2.7s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 25 SDtfs, 40 SDslu, 19 SDs, 0 SdLazy, 233 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 62 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred 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, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 10 NumberOfFragments, 26 HoareAnnotationTreeSize, 3 FomulaSimplifications, 75 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 101 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 54 NumberOfCodeBlocks, 54 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 48 ConstructedInterpolants, 0 QuantifiedInterpolants, 4988 SizeOfPredicates, 12 NumberOfNonLiveVariables, 75 ConjunctsInSsa, 44 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 1/12 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...