./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-lit/jm2006.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_342f5584-7a7b-4a60-a6ca-a76bbaf0ad3a/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_342f5584-7a7b-4a60-a6ca-a76bbaf0ad3a/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_342f5584-7a7b-4a60-a6ca-a76bbaf0ad3a/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_342f5584-7a7b-4a60-a6ca-a76bbaf0ad3a/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-lit/jm2006.i -s /tmp/vcloud-vcloud-master/worker/working_dir_342f5584-7a7b-4a60-a6ca-a76bbaf0ad3a/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_342f5584-7a7b-4a60-a6ca-a76bbaf0ad3a/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 37aa7dd2e80998c2241e95adb0e8008dc0337fe8 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 08:55:01,219 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:55:01,223 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:55:01,241 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:55:01,241 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:55:01,242 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:55:01,243 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:55:01,244 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:55:01,245 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:55:01,246 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:55:01,246 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:55:01,247 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:55:01,247 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:55:01,248 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:55:01,251 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:55:01,252 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:55:01,253 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:55:01,253 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:55:01,255 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:55:01,256 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:55:01,264 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:55:01,266 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:55:01,268 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:55:01,270 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:55:01,273 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:55:01,273 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:55:01,273 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:55:01,274 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:55:01,274 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:55:01,275 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:55:01,275 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:55:01,276 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:55:01,276 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:55:01,277 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:55:01,278 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:55:01,278 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:55:01,279 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:55:01,279 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:55:01,279 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:55:01,280 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:55:01,280 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:55:01,281 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_342f5584-7a7b-4a60-a6ca-a76bbaf0ad3a/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-22 08:55:01,291 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:55:01,291 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:55:01,292 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:55:01,292 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:55:01,293 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:55:01,293 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:55:01,293 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 08:55:01,293 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:55:01,293 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 08:55:01,293 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:55:01,293 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 08:55:01,294 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 08:55:01,294 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 08:55:01,294 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 08:55:01,294 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 08:55:01,294 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:55:01,294 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 08:55:01,295 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:55:01,295 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:55:01,295 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 08:55:01,295 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 08:55:01,295 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 08:55:01,295 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:55:01,295 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 08:55:01,296 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 08:55:01,296 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 08:55:01,296 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 08:55:01,296 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 08:55:01,296 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_342f5584-7a7b-4a60-a6ca-a76bbaf0ad3a/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 -> 37aa7dd2e80998c2241e95adb0e8008dc0337fe8 [2019-10-22 08:55:01,326 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:55:01,340 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:55:01,342 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:55:01,344 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:55:01,345 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:55:01,345 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_342f5584-7a7b-4a60-a6ca-a76bbaf0ad3a/bin/uautomizer/../../sv-benchmarks/c/loop-lit/jm2006.i [2019-10-22 08:55:01,398 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_342f5584-7a7b-4a60-a6ca-a76bbaf0ad3a/bin/uautomizer/data/f1c467743/35a9989ae762460b9641af3ab316e258/FLAG8d66273b4 [2019-10-22 08:55:01,788 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:55:01,792 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_342f5584-7a7b-4a60-a6ca-a76bbaf0ad3a/sv-benchmarks/c/loop-lit/jm2006.i [2019-10-22 08:55:01,797 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_342f5584-7a7b-4a60-a6ca-a76bbaf0ad3a/bin/uautomizer/data/f1c467743/35a9989ae762460b9641af3ab316e258/FLAG8d66273b4 [2019-10-22 08:55:02,181 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_342f5584-7a7b-4a60-a6ca-a76bbaf0ad3a/bin/uautomizer/data/f1c467743/35a9989ae762460b9641af3ab316e258 [2019-10-22 08:55:02,184 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:55:02,185 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 08:55:02,186 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:55:02,186 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:55:02,191 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:55:02,192 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:55:02" (1/1) ... [2019-10-22 08:55:02,194 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70350657 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:02, skipping insertion in model container [2019-10-22 08:55:02,195 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:55:02" (1/1) ... [2019-10-22 08:55:02,202 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:55:02,217 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:55:02,355 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:55:02,359 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:55:02,434 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:55:02,447 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:55:02,448 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:02 WrapperNode [2019-10-22 08:55:02,448 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:55:02,449 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 08:55:02,449 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 08:55:02,449 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 08:55:02,457 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:02" (1/1) ... [2019-10-22 08:55:02,462 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:02" (1/1) ... [2019-10-22 08:55:02,476 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 08:55:02,476 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:55:02,477 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:55:02,477 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:55:02,484 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:02" (1/1) ... [2019-10-22 08:55:02,485 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:02" (1/1) ... [2019-10-22 08:55:02,485 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:02" (1/1) ... [2019-10-22 08:55:02,485 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:02" (1/1) ... [2019-10-22 08:55:02,487 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:02" (1/1) ... [2019-10-22 08:55:02,491 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:02" (1/1) ... [2019-10-22 08:55:02,491 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:02" (1/1) ... [2019-10-22 08:55:02,493 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:55:02,493 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:55:02,493 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:55:02,493 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:55:02,494 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:02" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_342f5584-7a7b-4a60-a6ca-a76bbaf0ad3a/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 08:55:02,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:55:02,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:55:02,673 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:55:02,673 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-10-22 08:55:02,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:55:02 BoogieIcfgContainer [2019-10-22 08:55:02,675 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:55:02,675 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 08:55:02,676 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 08:55:02,678 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 08:55:02,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 08:55:02" (1/3) ... [2019-10-22 08:55:02,679 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40413977 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:55:02, skipping insertion in model container [2019-10-22 08:55:02,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:02" (2/3) ... [2019-10-22 08:55:02,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40413977 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:55:02, skipping insertion in model container [2019-10-22 08:55:02,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:55:02" (3/3) ... [2019-10-22 08:55:02,681 INFO L109 eAbstractionObserver]: Analyzing ICFG jm2006.i [2019-10-22 08:55:02,690 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 08:55:02,695 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 08:55:02,703 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 08:55:02,720 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 08:55:02,720 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 08:55:02,721 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 08:55:02,721 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:55:02,721 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:55:02,721 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 08:55:02,721 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:55:02,722 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 08:55:02,731 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2019-10-22 08:55:02,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-10-22 08:55:02,735 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:02,736 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-10-22 08:55:02,738 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:55:02,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:02,745 INFO L82 PathProgramCache]: Analyzing trace with hash 922201356, now seen corresponding path program 1 times [2019-10-22 08:55:02,750 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:02,750 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628477924] [2019-10-22 08:55:02,750 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:02,750 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:02,751 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:02,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:02,837 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 08:55:02,838 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628477924] [2019-10-22 08:55:02,839 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:02,839 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 08:55:02,839 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256651988] [2019-10-22 08:55:02,842 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 08:55:02,843 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:02,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 08:55:02,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 08:55:02,853 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 2 states. [2019-10-22 08:55:02,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:02,863 INFO L93 Difference]: Finished difference Result 19 states and 24 transitions. [2019-10-22 08:55:02,863 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 08:55:02,864 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2019-10-22 08:55:02,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:02,872 INFO L225 Difference]: With dead ends: 19 [2019-10-22 08:55:02,872 INFO L226 Difference]: Without dead ends: 7 [2019-10-22 08:55:02,875 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 08:55:02,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2019-10-22 08:55:02,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2019-10-22 08:55:02,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-10-22 08:55:02,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2019-10-22 08:55:02,899 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 6 [2019-10-22 08:55:02,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:02,900 INFO L462 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2019-10-22 08:55:02,900 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 08:55:02,900 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2019-10-22 08:55:02,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-10-22 08:55:02,900 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:02,900 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-10-22 08:55:02,901 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:55:02,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:02,901 INFO L82 PathProgramCache]: Analyzing trace with hash 922082192, now seen corresponding path program 1 times [2019-10-22 08:55:02,901 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:02,901 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478529912] [2019-10-22 08:55:02,902 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:02,902 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:02,902 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:02,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:02,993 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 08:55:02,994 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478529912] [2019-10-22 08:55:02,994 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:02,994 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 08:55:02,994 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131486248] [2019-10-22 08:55:02,996 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 08:55:02,996 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:02,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 08:55:02,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:55:02,997 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 5 states. [2019-10-22 08:55:03,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:03,101 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2019-10-22 08:55:03,102 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 08:55:03,102 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2019-10-22 08:55:03,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:03,102 INFO L225 Difference]: With dead ends: 12 [2019-10-22 08:55:03,102 INFO L226 Difference]: Without dead ends: 8 [2019-10-22 08:55:03,103 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-22 08:55:03,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-10-22 08:55:03,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-10-22 08:55:03,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-10-22 08:55:03,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2019-10-22 08:55:03,106 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2019-10-22 08:55:03,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:03,106 INFO L462 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2019-10-22 08:55:03,106 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 08:55:03,106 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2019-10-22 08:55:03,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-10-22 08:55:03,106 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:03,106 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:55:03,107 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:55:03,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:03,107 INFO L82 PathProgramCache]: Analyzing trace with hash -1478617325, now seen corresponding path program 1 times [2019-10-22 08:55:03,108 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:03,108 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234119103] [2019-10-22 08:55:03,108 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:03,108 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:03,108 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:03,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:03,279 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 08:55:03,279 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234119103] [2019-10-22 08:55:03,279 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131146067] [2019-10-22 08:55:03,279 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_342f5584-7a7b-4a60-a6ca-a76bbaf0ad3a/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 08:55:03,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:03,321 WARN L254 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 18 conjunts are in the unsatisfiable core [2019-10-22 08:55:03,330 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:55:03,420 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 08:55:03,442 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 08:55:03,442 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:55:03,442 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-10-22 08:55:03,443 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187810143] [2019-10-22 08:55:03,443 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-22 08:55:03,443 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:03,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-22 08:55:03,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-10-22 08:55:03,444 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 9 states. [2019-10-22 08:55:03,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:03,542 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2019-10-22 08:55:03,543 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 08:55:03,543 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 7 [2019-10-22 08:55:03,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:03,543 INFO L225 Difference]: With dead ends: 13 [2019-10-22 08:55:03,544 INFO L226 Difference]: Without dead ends: 9 [2019-10-22 08:55:03,544 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2019-10-22 08:55:03,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2019-10-22 08:55:03,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2019-10-22 08:55:03,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-10-22 08:55:03,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2019-10-22 08:55:03,547 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2019-10-22 08:55:03,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:03,548 INFO L462 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2019-10-22 08:55:03,548 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-22 08:55:03,548 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2019-10-22 08:55:03,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-10-22 08:55:03,548 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:03,549 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2019-10-22 08:55:03,750 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:55:03,750 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:55:03,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:03,751 INFO L82 PathProgramCache]: Analyzing trace with hash 1409108976, now seen corresponding path program 2 times [2019-10-22 08:55:03,751 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:03,751 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852482327] [2019-10-22 08:55:03,751 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:03,751 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:03,751 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:03,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:03,917 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:03,918 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852482327] [2019-10-22 08:55:03,918 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012602995] [2019-10-22 08:55:03,918 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_342f5584-7a7b-4a60-a6ca-a76bbaf0ad3a/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 08:55:03,963 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-22 08:55:03,963 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 08:55:03,964 WARN L254 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 23 conjunts are in the unsatisfiable core [2019-10-22 08:55:03,965 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:55:04,033 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 08:55:04,049 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:04,050 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:55:04,050 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2019-10-22 08:55:04,050 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783368429] [2019-10-22 08:55:04,050 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-22 08:55:04,051 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:04,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-22 08:55:04,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-10-22 08:55:04,051 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 10 states. [2019-10-22 08:55:04,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:04,276 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2019-10-22 08:55:04,277 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-22 08:55:04,278 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 8 [2019-10-22 08:55:04,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:04,278 INFO L225 Difference]: With dead ends: 17 [2019-10-22 08:55:04,278 INFO L226 Difference]: Without dead ends: 11 [2019-10-22 08:55:04,279 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2019-10-22 08:55:04,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-10-22 08:55:04,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-10-22 08:55:04,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-10-22 08:55:04,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2019-10-22 08:55:04,282 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2019-10-22 08:55:04,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:04,283 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2019-10-22 08:55:04,283 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-22 08:55:04,283 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2019-10-22 08:55:04,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-22 08:55:04,286 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:04,286 INFO L380 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2019-10-22 08:55:04,487 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:55:04,487 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:55:04,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:04,488 INFO L82 PathProgramCache]: Analyzing trace with hash 1290413136, now seen corresponding path program 3 times [2019-10-22 08:55:04,488 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:04,488 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406755789] [2019-10-22 08:55:04,488 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:04,488 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:04,488 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:04,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:04,629 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-22 08:55:04,630 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406755789] [2019-10-22 08:55:04,630 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2025924132] [2019-10-22 08:55:04,630 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_342f5584-7a7b-4a60-a6ca-a76bbaf0ad3a/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:55:04,655 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-10-22 08:55:04,655 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 08:55:04,656 WARN L254 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 31 conjunts are in the unsatisfiable core [2019-10-22 08:55:04,657 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:55:04,756 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 08:55:04,770 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:04,770 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:55:04,771 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 13 [2019-10-22 08:55:04,771 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310103539] [2019-10-22 08:55:04,771 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-10-22 08:55:04,772 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:04,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-10-22 08:55:04,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2019-10-22 08:55:04,772 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 13 states. [2019-10-22 08:55:04,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:04,931 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2019-10-22 08:55:04,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-22 08:55:04,931 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 10 [2019-10-22 08:55:04,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:04,931 INFO L225 Difference]: With dead ends: 14 [2019-10-22 08:55:04,931 INFO L226 Difference]: Without dead ends: 0 [2019-10-22 08:55:04,932 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2019-10-22 08:55:04,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-22 08:55:04,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-22 08:55:04,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-22 08:55:04,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 08:55:04,933 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2019-10-22 08:55:04,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:04,933 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:55:04,933 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-10-22 08:55:04,933 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-22 08:55:04,933 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-22 08:55:05,134 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:55:05,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-22 08:55:05,207 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-22 08:55:05,207 INFO L446 ceAbstractionStarter]: At program point L21(lines 21 23) the Hoare annotation is: true [2019-10-22 08:55:05,207 INFO L439 ceAbstractionStarter]: At program point L17-2(lines 17 20) the Hoare annotation is: (let ((.cse1 (+ ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~i~0)) (.cse0 (+ ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~j~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0))) [2019-10-22 08:55:05,208 INFO L443 ceAbstractionStarter]: For program point L17-3(lines 10 25) no Hoare annotation was computed. [2019-10-22 08:55:05,208 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-10-22 08:55:05,208 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-10-22 08:55:05,208 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-22 08:55:05,208 INFO L446 ceAbstractionStarter]: At program point L24(lines 10 25) the Hoare annotation is: true [2019-10-22 08:55:05,208 INFO L443 ceAbstractionStarter]: For program point L14(line 14) no Hoare annotation was computed. [2019-10-22 08:55:05,208 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-10-22 08:55:05,208 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-10-22 08:55:05,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 08:55:05 BoogieIcfgContainer [2019-10-22 08:55:05,222 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 08:55:05,222 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:55:05,222 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:55:05,223 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:55:05,223 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:55:02" (3/4) ... [2019-10-22 08:55:05,227 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-10-22 08:55:05,238 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-10-22 08:55:05,238 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-10-22 08:55:05,279 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_342f5584-7a7b-4a60-a6ca-a76bbaf0ad3a/bin/uautomizer/witness.graphml [2019-10-22 08:55:05,279 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:55:05,280 INFO L168 Benchmark]: Toolchain (without parser) took 3095.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 944.7 MB in the beginning and 919.0 MB in the end (delta: 25.7 MB). Peak memory consumption was 167.3 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:05,281 INFO L168 Benchmark]: CDTParser took 0.17 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. [2019-10-22 08:55:05,281 INFO L168 Benchmark]: CACSL2BoogieTranslator took 262.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -191.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:05,282 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.54 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:55:05,282 INFO L168 Benchmark]: Boogie Preprocessor took 16.27 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:55:05,282 INFO L168 Benchmark]: RCFGBuilder took 181.67 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: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:05,283 INFO L168 Benchmark]: TraceAbstraction took 2546.58 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 919.0 MB in the end (delta: 200.3 MB). Peak memory consumption was 200.3 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:05,283 INFO L168 Benchmark]: Witness Printer took 56.50 ms. Allocated memory is still 1.2 GB. Free memory is still 919.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:55:05,285 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 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 262.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -191.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 27.54 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 16.27 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 181.67 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: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2546.58 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 919.0 MB in the end (delta: 200.3 MB). Peak memory consumption was 200.3 MB. Max. memory is 11.5 GB. * Witness Printer took 56.50 ms. Allocated memory is still 1.2 GB. Free memory is still 919.0 MB. There was no memory consumed. 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: 17]: Loop Invariant Derived loop invariant: x + j <= y + i && y + i <= x + j - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Result: SAFE, OverallTime: 2.4s, OverallIterations: 5, TraceHistogramMax: 4, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 27 SDtfs, 21 SDslu, 33 SDs, 0 SdLazy, 158 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 63 GetRequests, 16 SyntacticMatches, 6 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 10 NumberOfFragments, 17 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 138 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 62 NumberOfCodeBlocks, 62 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 3698 SizeOfPredicates, 18 NumberOfNonLiveVariables, 116 ConjunctsInSsa, 72 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 1/28 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...