./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/sum_10x0_true-unreach-call_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_d51c3440-2096-49a8-8458-57eee12edf1c/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_d51c3440-2096-49a8-8458-57eee12edf1c/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_d51c3440-2096-49a8-8458-57eee12edf1c/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_d51c3440-2096-49a8-8458-57eee12edf1c/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/sum_10x0_true-unreach-call_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_d51c3440-2096-49a8-8458-57eee12edf1c/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_d51c3440-2096-49a8-8458-57eee12edf1c/bin-2019/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 b1d9bbb15ebabc8fa7bed11dd5ef1fc8e11e37bc ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-aa41828 [2018-11-23 07:22:36,485 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 07:22:36,486 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 07:22:36,495 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 07:22:36,495 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 07:22:36,496 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 07:22:36,497 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 07:22:36,498 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 07:22:36,499 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 07:22:36,500 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 07:22:36,500 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 07:22:36,501 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 07:22:36,501 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 07:22:36,502 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 07:22:36,503 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 07:22:36,503 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 07:22:36,504 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 07:22:36,505 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 07:22:36,506 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 07:22:36,507 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 07:22:36,508 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 07:22:36,509 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 07:22:36,510 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 07:22:36,510 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 07:22:36,510 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 07:22:36,511 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 07:22:36,511 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 07:22:36,512 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 07:22:36,512 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 07:22:36,513 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 07:22:36,513 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 07:22:36,514 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 07:22:36,514 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 07:22:36,514 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 07:22:36,515 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 07:22:36,516 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 07:22:36,516 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_d51c3440-2096-49a8-8458-57eee12edf1c/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-23 07:22:36,526 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 07:22:36,526 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 07:22:36,527 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 07:22:36,527 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 07:22:36,528 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-23 07:22:36,528 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-23 07:22:36,528 INFO L133 SettingsManager]: * Use SBE=true [2018-11-23 07:22:36,528 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 07:22:36,528 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-23 07:22:36,528 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 07:22:36,528 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-23 07:22:36,529 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 07:22:36,529 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 07:22:36,529 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 07:22:36,529 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 07:22:36,529 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-23 07:22:36,529 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 07:22:36,529 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 07:22:36,530 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 07:22:36,530 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 07:22:36,530 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 07:22:36,530 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 07:22:36,530 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 07:22:36,530 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 07:22:36,530 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 07:22:36,531 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 07:22:36,531 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 07:22:36,531 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-23 07:22:36,531 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 07:22:36,531 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-23 07:22:36,531 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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_d51c3440-2096-49a8-8458-57eee12edf1c/bin-2019/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 -> b1d9bbb15ebabc8fa7bed11dd5ef1fc8e11e37bc [2018-11-23 07:22:36,556 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 07:22:36,566 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 07:22:36,569 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 07:22:36,570 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 07:22:36,570 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 07:22:36,571 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_d51c3440-2096-49a8-8458-57eee12edf1c/bin-2019/uautomizer/../../sv-benchmarks/c/recursive-simple/sum_10x0_true-unreach-call_true-termination.c [2018-11-23 07:22:36,620 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d51c3440-2096-49a8-8458-57eee12edf1c/bin-2019/uautomizer/data/56c8bccbd/1c50ffce116e4d3b99d286151f971af7/FLAG88ce3d950 [2018-11-23 07:22:36,961 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 07:22:36,961 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_d51c3440-2096-49a8-8458-57eee12edf1c/sv-benchmarks/c/recursive-simple/sum_10x0_true-unreach-call_true-termination.c [2018-11-23 07:22:36,966 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d51c3440-2096-49a8-8458-57eee12edf1c/bin-2019/uautomizer/data/56c8bccbd/1c50ffce116e4d3b99d286151f971af7/FLAG88ce3d950 [2018-11-23 07:22:37,382 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_d51c3440-2096-49a8-8458-57eee12edf1c/bin-2019/uautomizer/data/56c8bccbd/1c50ffce116e4d3b99d286151f971af7 [2018-11-23 07:22:37,385 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 07:22:37,386 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 07:22:37,387 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 07:22:37,387 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 07:22:37,391 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 07:22:37,392 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 07:22:37" (1/1) ... [2018-11-23 07:22:37,394 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fb74b4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:22:37, skipping insertion in model container [2018-11-23 07:22:37,395 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 07:22:37" (1/1) ... [2018-11-23 07:22:37,405 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 07:22:37,420 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 07:22:37,535 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 07:22:37,538 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 07:22:37,548 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 07:22:37,557 INFO L195 MainTranslator]: Completed translation [2018-11-23 07:22:37,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:22:37 WrapperNode [2018-11-23 07:22:37,557 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 07:22:37,558 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 07:22:37,558 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 07:22:37,558 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 07:22:37,563 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:22:37" (1/1) ... [2018-11-23 07:22:37,567 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:22:37" (1/1) ... [2018-11-23 07:22:37,571 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 07:22:37,571 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 07:22:37,572 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 07:22:37,572 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 07:22:37,578 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:22:37" (1/1) ... [2018-11-23 07:22:37,578 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:22:37" (1/1) ... [2018-11-23 07:22:37,579 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:22:37" (1/1) ... [2018-11-23 07:22:37,579 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:22:37" (1/1) ... [2018-11-23 07:22:37,581 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:22:37" (1/1) ... [2018-11-23 07:22:37,583 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:22:37" (1/1) ... [2018-11-23 07:22:37,583 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:22:37" (1/1) ... [2018-11-23 07:22:37,584 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 07:22:37,584 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 07:22:37,585 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 07:22:37,585 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 07:22:37,585 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:22:37" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d51c3440-2096-49a8-8458-57eee12edf1c/bin-2019/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 [2018-11-23 07:22:37,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-23 07:22:37,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-23 07:22:37,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 07:22:37,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 07:22:37,665 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2018-11-23 07:22:37,665 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2018-11-23 07:22:37,665 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-23 07:22:37,665 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-23 07:22:37,772 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 07:22:37,772 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-11-23 07:22:37,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 07:22:37 BoogieIcfgContainer [2018-11-23 07:22:37,773 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 07:22:37,773 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-23 07:22:37,773 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-23 07:22:37,775 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-23 07:22:37,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 07:22:37" (1/3) ... [2018-11-23 07:22:37,776 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@628c17eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 07:22:37, skipping insertion in model container [2018-11-23 07:22:37,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:22:37" (2/3) ... [2018-11-23 07:22:37,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@628c17eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 07:22:37, skipping insertion in model container [2018-11-23 07:22:37,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 07:22:37" (3/3) ... [2018-11-23 07:22:37,778 INFO L112 eAbstractionObserver]: Analyzing ICFG sum_10x0_true-unreach-call_true-termination.c [2018-11-23 07:22:37,785 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-23 07:22:37,791 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-23 07:22:37,802 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-23 07:22:37,828 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-23 07:22:37,829 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-23 07:22:37,829 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-23 07:22:37,829 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-23 07:22:37,829 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 07:22:37,829 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 07:22:37,830 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-23 07:22:37,830 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 07:22:37,830 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-23 07:22:37,846 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2018-11-23 07:22:37,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-23 07:22:37,852 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 07:22:37,853 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 07:22:37,855 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 07:22:37,859 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 07:22:37,859 INFO L82 PathProgramCache]: Analyzing trace with hash 2001781660, now seen corresponding path program 1 times [2018-11-23 07:22:37,860 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 07:22:37,861 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 07:22:37,896 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:22:37,896 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 07:22:37,896 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:22:37,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 07:22:38,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 07:22:38,006 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 07:22:38,006 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-23 07:22:38,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 07:22:38,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 07:22:38,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-23 07:22:38,021 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 5 states. [2018-11-23 07:22:38,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 07:22:38,093 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2018-11-23 07:22:38,093 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-23 07:22:38,094 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2018-11-23 07:22:38,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 07:22:38,102 INFO L225 Difference]: With dead ends: 30 [2018-11-23 07:22:38,103 INFO L226 Difference]: Without dead ends: 18 [2018-11-23 07:22:38,105 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-23 07:22:38,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-11-23 07:22:38,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-11-23 07:22:38,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-11-23 07:22:38,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2018-11-23 07:22:38,135 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 13 [2018-11-23 07:22:38,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 07:22:38,135 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2018-11-23 07:22:38,135 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 07:22:38,136 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2018-11-23 07:22:38,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-23 07:22:38,137 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 07:22:38,137 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 07:22:38,138 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 07:22:38,138 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 07:22:38,138 INFO L82 PathProgramCache]: Analyzing trace with hash -118151420, now seen corresponding path program 1 times [2018-11-23 07:22:38,138 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 07:22:38,138 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 07:22:38,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:22:38,139 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 07:22:38,140 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:22:38,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 07:22:38,202 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-23 07:22:38,202 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 07:22:38,202 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d51c3440-2096-49a8-8458-57eee12edf1c/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 07:22:38,222 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 07:22:38,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 07:22:38,243 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 07:22:38,269 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-23 07:22:38,286 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 07:22:38,286 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-11-23 07:22:38,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-23 07:22:38,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-23 07:22:38,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-11-23 07:22:38,288 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 6 states. [2018-11-23 07:22:38,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 07:22:38,354 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2018-11-23 07:22:38,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-23 07:22:38,354 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2018-11-23 07:22:38,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 07:22:38,355 INFO L225 Difference]: With dead ends: 25 [2018-11-23 07:22:38,355 INFO L226 Difference]: Without dead ends: 21 [2018-11-23 07:22:38,356 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-23 07:22:38,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-11-23 07:22:38,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-11-23 07:22:38,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-11-23 07:22:38,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2018-11-23 07:22:38,360 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 19 [2018-11-23 07:22:38,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 07:22:38,361 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2018-11-23 07:22:38,361 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-23 07:22:38,361 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2018-11-23 07:22:38,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-23 07:22:38,362 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 07:22:38,362 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 07:22:38,362 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 07:22:38,362 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 07:22:38,362 INFO L82 PathProgramCache]: Analyzing trace with hash 764931548, now seen corresponding path program 2 times [2018-11-23 07:22:38,362 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 07:22:38,363 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 07:22:38,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:22:38,364 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 07:22:38,364 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:22:38,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 07:22:38,441 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-23 07:22:38,441 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 07:22:38,441 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d51c3440-2096-49a8-8458-57eee12edf1c/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 07:22:38,450 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-23 07:22:38,474 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-23 07:22:38,474 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 07:22:38,476 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 07:22:38,490 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-23 07:22:38,508 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 07:22:38,508 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-11-23 07:22:38,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-23 07:22:38,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-23 07:22:38,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-11-23 07:22:38,509 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 7 states. [2018-11-23 07:22:38,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 07:22:38,568 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2018-11-23 07:22:38,568 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-23 07:22:38,568 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2018-11-23 07:22:38,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 07:22:38,569 INFO L225 Difference]: With dead ends: 28 [2018-11-23 07:22:38,570 INFO L226 Difference]: Without dead ends: 24 [2018-11-23 07:22:38,570 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-23 07:22:38,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-11-23 07:22:38,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-11-23 07:22:38,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-11-23 07:22:38,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2018-11-23 07:22:38,575 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 25 [2018-11-23 07:22:38,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 07:22:38,576 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2018-11-23 07:22:38,576 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-23 07:22:38,576 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2018-11-23 07:22:38,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-11-23 07:22:38,577 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 07:22:38,577 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 07:22:38,577 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 07:22:38,577 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 07:22:38,578 INFO L82 PathProgramCache]: Analyzing trace with hash 601942852, now seen corresponding path program 3 times [2018-11-23 07:22:38,578 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 07:22:38,578 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 07:22:38,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:22:38,579 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 07:22:38,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:22:38,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 07:22:38,667 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-11-23 07:22:38,668 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 07:22:38,668 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d51c3440-2096-49a8-8458-57eee12edf1c/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 07:22:38,681 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-23 07:22:38,701 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-11-23 07:22:38,702 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 07:22:38,704 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 07:22:38,726 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-11-23 07:22:38,747 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 07:22:38,747 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-11-23 07:22:38,748 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-23 07:22:38,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-23 07:22:38,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-23 07:22:38,748 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 8 states. [2018-11-23 07:22:38,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 07:22:38,807 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2018-11-23 07:22:38,807 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-23 07:22:38,807 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2018-11-23 07:22:38,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 07:22:38,808 INFO L225 Difference]: With dead ends: 31 [2018-11-23 07:22:38,808 INFO L226 Difference]: Without dead ends: 27 [2018-11-23 07:22:38,809 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2018-11-23 07:22:38,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-11-23 07:22:38,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-11-23 07:22:38,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-11-23 07:22:38,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2018-11-23 07:22:38,814 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 31 [2018-11-23 07:22:38,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 07:22:38,814 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2018-11-23 07:22:38,814 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-23 07:22:38,815 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2018-11-23 07:22:38,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-11-23 07:22:38,815 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 07:22:38,816 INFO L402 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 07:22:38,816 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 07:22:38,816 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 07:22:38,816 INFO L82 PathProgramCache]: Analyzing trace with hash -183109604, now seen corresponding path program 4 times [2018-11-23 07:22:38,816 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 07:22:38,816 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 07:22:38,817 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:22:38,817 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 07:22:38,817 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:22:38,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 07:22:38,914 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2018-11-23 07:22:38,914 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 07:22:38,915 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d51c3440-2096-49a8-8458-57eee12edf1c/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 07:22:38,924 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-23 07:22:38,935 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-23 07:22:38,936 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 07:22:38,938 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 07:22:38,953 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2018-11-23 07:22:38,979 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 07:22:38,979 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-11-23 07:22:38,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-23 07:22:38,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-23 07:22:38,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2018-11-23 07:22:38,980 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 9 states. [2018-11-23 07:22:39,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 07:22:39,070 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2018-11-23 07:22:39,070 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-23 07:22:39,070 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2018-11-23 07:22:39,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 07:22:39,071 INFO L225 Difference]: With dead ends: 34 [2018-11-23 07:22:39,072 INFO L226 Difference]: Without dead ends: 30 [2018-11-23 07:22:39,072 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2018-11-23 07:22:39,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-11-23 07:22:39,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2018-11-23 07:22:39,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-11-23 07:22:39,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2018-11-23 07:22:39,077 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 37 [2018-11-23 07:22:39,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 07:22:39,078 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2018-11-23 07:22:39,078 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-23 07:22:39,078 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2018-11-23 07:22:39,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-11-23 07:22:39,079 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 07:22:39,079 INFO L402 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 07:22:39,079 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 07:22:39,080 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 07:22:39,080 INFO L82 PathProgramCache]: Analyzing trace with hash -155447420, now seen corresponding path program 5 times [2018-11-23 07:22:39,080 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 07:22:39,080 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 07:22:39,081 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:22:39,081 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 07:22:39,081 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:22:39,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 07:22:39,171 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2018-11-23 07:22:39,171 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 07:22:39,171 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d51c3440-2096-49a8-8458-57eee12edf1c/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 07:22:39,179 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-23 07:22:39,221 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-11-23 07:22:39,221 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 07:22:39,224 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 07:22:39,248 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2018-11-23 07:22:39,271 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 07:22:39,271 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-11-23 07:22:39,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-23 07:22:39,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-23 07:22:39,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-23 07:22:39,272 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 10 states. [2018-11-23 07:22:39,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 07:22:39,359 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2018-11-23 07:22:39,359 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-23 07:22:39,359 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 43 [2018-11-23 07:22:39,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 07:22:39,360 INFO L225 Difference]: With dead ends: 37 [2018-11-23 07:22:39,361 INFO L226 Difference]: Without dead ends: 33 [2018-11-23 07:22:39,361 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2018-11-23 07:22:39,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-11-23 07:22:39,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-11-23 07:22:39,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-23 07:22:39,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2018-11-23 07:22:39,366 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 43 [2018-11-23 07:22:39,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 07:22:39,367 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2018-11-23 07:22:39,367 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-23 07:22:39,367 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2018-11-23 07:22:39,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-11-23 07:22:39,368 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 07:22:39,368 INFO L402 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 07:22:39,368 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 07:22:39,369 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 07:22:39,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1716183644, now seen corresponding path program 6 times [2018-11-23 07:22:39,369 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 07:22:39,369 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 07:22:39,369 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:22:39,370 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 07:22:39,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:22:39,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 07:22:39,452 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2018-11-23 07:22:39,452 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 07:22:39,452 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d51c3440-2096-49a8-8458-57eee12edf1c/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 07:22:39,459 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-23 07:22:39,480 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-11-23 07:22:39,480 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 07:22:39,483 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 07:22:39,498 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2018-11-23 07:22:39,514 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 07:22:39,514 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-11-23 07:22:39,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-23 07:22:39,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-23 07:22:39,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2018-11-23 07:22:39,516 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 11 states. [2018-11-23 07:22:39,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 07:22:39,597 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions. [2018-11-23 07:22:39,597 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-23 07:22:39,597 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 49 [2018-11-23 07:22:39,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 07:22:39,598 INFO L225 Difference]: With dead ends: 40 [2018-11-23 07:22:39,598 INFO L226 Difference]: Without dead ends: 36 [2018-11-23 07:22:39,599 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=110, Invalid=196, Unknown=0, NotChecked=0, Total=306 [2018-11-23 07:22:39,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-23 07:22:39,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-11-23 07:22:39,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-23 07:22:39,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2018-11-23 07:22:39,605 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 49 [2018-11-23 07:22:39,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 07:22:39,606 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2018-11-23 07:22:39,606 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-23 07:22:39,606 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2018-11-23 07:22:39,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-11-23 07:22:39,606 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 07:22:39,606 INFO L402 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 07:22:39,607 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 07:22:39,607 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 07:22:39,607 INFO L82 PathProgramCache]: Analyzing trace with hash -1079602236, now seen corresponding path program 7 times [2018-11-23 07:22:39,607 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 07:22:39,607 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 07:22:39,608 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:22:39,608 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 07:22:39,608 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:22:39,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 07:22:39,674 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2018-11-23 07:22:39,674 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 07:22:39,674 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d51c3440-2096-49a8-8458-57eee12edf1c/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 07:22:39,680 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 07:22:39,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 07:22:39,697 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 07:22:39,714 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2018-11-23 07:22:39,732 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 07:22:39,733 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-11-23 07:22:39,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-23 07:22:39,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-23 07:22:39,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2018-11-23 07:22:39,734 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand 12 states. [2018-11-23 07:22:39,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 07:22:39,855 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2018-11-23 07:22:39,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-23 07:22:39,856 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 55 [2018-11-23 07:22:39,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 07:22:39,857 INFO L225 Difference]: With dead ends: 43 [2018-11-23 07:22:39,857 INFO L226 Difference]: Without dead ends: 39 [2018-11-23 07:22:39,858 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=137, Invalid=243, Unknown=0, NotChecked=0, Total=380 [2018-11-23 07:22:39,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-11-23 07:22:39,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-11-23 07:22:39,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-11-23 07:22:39,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2018-11-23 07:22:39,865 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 55 [2018-11-23 07:22:39,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 07:22:39,865 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2018-11-23 07:22:39,865 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-23 07:22:39,867 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2018-11-23 07:22:39,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-11-23 07:22:39,868 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 07:22:39,868 INFO L402 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 07:22:39,868 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 07:22:39,868 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 07:22:39,869 INFO L82 PathProgramCache]: Analyzing trace with hash 1035381916, now seen corresponding path program 8 times [2018-11-23 07:22:39,869 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 07:22:39,869 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 07:22:39,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:22:39,870 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 07:22:39,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:22:39,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 07:22:39,996 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2018-11-23 07:22:39,996 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 07:22:39,996 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d51c3440-2096-49a8-8458-57eee12edf1c/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 07:22:40,007 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-23 07:22:40,023 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-23 07:22:40,023 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 07:22:40,026 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 07:22:40,045 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2018-11-23 07:22:40,071 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 07:22:40,071 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-11-23 07:22:40,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-23 07:22:40,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-23 07:22:40,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2018-11-23 07:22:40,072 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand 13 states. [2018-11-23 07:22:40,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 07:22:40,165 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions. [2018-11-23 07:22:40,166 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-23 07:22:40,166 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 61 [2018-11-23 07:22:40,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 07:22:40,167 INFO L225 Difference]: With dead ends: 46 [2018-11-23 07:22:40,167 INFO L226 Difference]: Without dead ends: 42 [2018-11-23 07:22:40,168 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=167, Invalid=295, Unknown=0, NotChecked=0, Total=462 [2018-11-23 07:22:40,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-11-23 07:22:40,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2018-11-23 07:22:40,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-11-23 07:22:40,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2018-11-23 07:22:40,172 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 61 [2018-11-23 07:22:40,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 07:22:40,173 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2018-11-23 07:22:40,173 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-23 07:22:40,173 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2018-11-23 07:22:40,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-11-23 07:22:40,173 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 07:22:40,173 INFO L402 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 07:22:40,174 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 07:22:40,174 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 07:22:40,174 INFO L82 PathProgramCache]: Analyzing trace with hash 952137732, now seen corresponding path program 9 times [2018-11-23 07:22:40,174 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 07:22:40,174 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 07:22:40,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:22:40,175 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 07:22:40,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:22:40,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 07:22:40,276 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2018-11-23 07:22:40,276 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 07:22:40,276 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d51c3440-2096-49a8-8458-57eee12edf1c/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 07:22:40,283 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-23 07:22:40,313 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2018-11-23 07:22:40,313 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 07:22:40,316 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 07:22:40,340 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2018-11-23 07:22:40,356 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 07:22:40,357 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2018-11-23 07:22:40,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-23 07:22:40,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-23 07:22:40,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2018-11-23 07:22:40,358 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand 14 states. [2018-11-23 07:22:40,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 07:22:40,458 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2018-11-23 07:22:40,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-23 07:22:40,458 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 67 [2018-11-23 07:22:40,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 07:22:40,459 INFO L225 Difference]: With dead ends: 49 [2018-11-23 07:22:40,459 INFO L226 Difference]: Without dead ends: 45 [2018-11-23 07:22:40,459 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=200, Invalid=352, Unknown=0, NotChecked=0, Total=552 [2018-11-23 07:22:40,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-11-23 07:22:40,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-11-23 07:22:40,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-11-23 07:22:40,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2018-11-23 07:22:40,462 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 67 [2018-11-23 07:22:40,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 07:22:40,462 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2018-11-23 07:22:40,463 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-23 07:22:40,463 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2018-11-23 07:22:40,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-11-23 07:22:40,463 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 07:22:40,463 INFO L402 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 07:22:40,463 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 07:22:40,463 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 07:22:40,464 INFO L82 PathProgramCache]: Analyzing trace with hash 1540970204, now seen corresponding path program 10 times [2018-11-23 07:22:40,464 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 07:22:40,464 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 07:22:40,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:22:40,464 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 07:22:40,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:22:40,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 07:22:40,955 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2018-11-23 07:22:40,955 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 07:22:40,955 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d51c3440-2096-49a8-8458-57eee12edf1c/bin-2019/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 07:22:40,971 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-23 07:22:40,992 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-23 07:22:40,992 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 07:22:40,996 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 07:22:41,153 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2018-11-23 07:22:41,170 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-23 07:22:41,170 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [29] total 32 [2018-11-23 07:22:41,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-11-23 07:22:41,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-11-23 07:22:41,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=929, Unknown=0, NotChecked=0, Total=992 [2018-11-23 07:22:41,171 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand 32 states. [2018-11-23 07:22:42,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 07:22:42,130 INFO L93 Difference]: Finished difference Result 48 states and 50 transitions. [2018-11-23 07:22:42,131 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-11-23 07:22:42,131 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 73 [2018-11-23 07:22:42,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 07:22:42,131 INFO L225 Difference]: With dead ends: 48 [2018-11-23 07:22:42,131 INFO L226 Difference]: Without dead ends: 0 [2018-11-23 07:22:42,133 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 78 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=300, Invalid=3006, Unknown=0, NotChecked=0, Total=3306 [2018-11-23 07:22:42,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-23 07:22:42,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-23 07:22:42,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-23 07:22:42,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-23 07:22:42,134 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 73 [2018-11-23 07:22:42,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 07:22:42,134 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 07:22:42,134 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-11-23 07:22:42,134 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-23 07:22:42,134 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-23 07:22:42,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-23 07:22:42,168 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-23 07:22:42,168 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-23 07:22:42,168 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-23 07:22:42,168 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-23 07:22:42,168 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-23 07:22:42,168 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-23 07:22:42,168 INFO L448 ceAbstractionStarter]: For program point sumEXIT(lines 3 9) no Hoare annotation was computed. [2018-11-23 07:22:42,168 INFO L444 ceAbstractionStarter]: At program point L7(line 7) the Hoare annotation is: (and (= sum_~m |sum_#in~m|) (= sum_~n |sum_#in~n|) (<= (+ |sum_#in~m| 1) (+ sum_~n sum_~m))) [2018-11-23 07:22:42,168 INFO L448 ceAbstractionStarter]: For program point L7-1(line 7) no Hoare annotation was computed. [2018-11-23 07:22:42,168 INFO L448 ceAbstractionStarter]: For program point L4(lines 4 8) no Hoare annotation was computed. [2018-11-23 07:22:42,168 INFO L448 ceAbstractionStarter]: For program point sumFINAL(lines 3 9) no Hoare annotation was computed. [2018-11-23 07:22:42,168 INFO L451 ceAbstractionStarter]: At program point sumENTRY(lines 3 9) the Hoare annotation is: true [2018-11-23 07:22:42,169 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 11 18) the Hoare annotation is: true [2018-11-23 07:22:42,169 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 11 18) no Hoare annotation was computed. [2018-11-23 07:22:42,169 INFO L448 ceAbstractionStarter]: For program point L16(line 16) no Hoare annotation was computed. [2018-11-23 07:22:42,169 INFO L448 ceAbstractionStarter]: For program point L15(lines 15 17) no Hoare annotation was computed. [2018-11-23 07:22:42,169 INFO L444 ceAbstractionStarter]: At program point L14(line 14) the Hoare annotation is: (and (<= 10 main_~a~0) (<= main_~a~0 10)) [2018-11-23 07:22:42,169 INFO L448 ceAbstractionStarter]: For program point L14-1(line 14) no Hoare annotation was computed. [2018-11-23 07:22:42,169 INFO L448 ceAbstractionStarter]: For program point L15-2(lines 11 18) no Hoare annotation was computed. [2018-11-23 07:22:42,169 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2018-11-23 07:22:42,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 07:22:42 BoogieIcfgContainer [2018-11-23 07:22:42,172 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-23 07:22:42,172 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 07:22:42,172 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 07:22:42,172 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 07:22:42,172 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 07:22:37" (3/4) ... [2018-11-23 07:22:42,175 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-23 07:22:42,182 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-23 07:22:42,182 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure sum [2018-11-23 07:22:42,182 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-23 07:22:42,185 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-11-23 07:22:42,185 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-23 07:22:42,186 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-23 07:22:42,214 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_d51c3440-2096-49a8-8458-57eee12edf1c/bin-2019/uautomizer/witness.graphml [2018-11-23 07:22:42,214 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 07:22:42,214 INFO L168 Benchmark]: Toolchain (without parser) took 4829.12 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 306.7 MB). Free memory was 959.3 MB in the beginning and 1.2 GB in the end (delta: -208.2 MB). Peak memory consumption was 98.5 MB. Max. memory is 11.5 GB. [2018-11-23 07:22:42,215 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 07:22:42,215 INFO L168 Benchmark]: CACSL2BoogieTranslator took 170.74 ms. Allocated memory is still 1.0 GB. Free memory was 959.3 MB in the beginning and 948.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-23 07:22:42,216 INFO L168 Benchmark]: Boogie Procedure Inliner took 13.49 ms. Allocated memory is still 1.0 GB. Free memory is still 948.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 07:22:42,216 INFO L168 Benchmark]: Boogie Preprocessor took 12.74 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-23 07:22:42,216 INFO L168 Benchmark]: RCFGBuilder took 188.26 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -180.5 MB). Peak memory consumption was 19.4 MB. Max. memory is 11.5 GB. [2018-11-23 07:22:42,217 INFO L168 Benchmark]: TraceAbstraction took 4398.39 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 163.6 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -41.1 MB). Peak memory consumption was 122.5 MB. Max. memory is 11.5 GB. [2018-11-23 07:22:42,217 INFO L168 Benchmark]: Witness Printer took 42.09 ms. Allocated memory is still 1.3 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 07:22:42,219 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 170.74 ms. Allocated memory is still 1.0 GB. Free memory was 959.3 MB in the beginning and 948.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 13.49 ms. Allocated memory is still 1.0 GB. Free memory is still 948.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 12.74 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 188.26 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -180.5 MB). Peak memory consumption was 19.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4398.39 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 163.6 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -41.1 MB). Peak memory consumption was 122.5 MB. Max. memory is 11.5 GB. * Witness Printer took 42.09 ms. Allocated memory is still 1.3 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 16]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. SAFE Result, 4.3s OverallTime, 11 OverallIterations, 11 TraceHistogramMax, 1.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 142 SDtfs, 214 SDslu, 968 SDs, 0 SdLazy, 1150 SolverSat, 105 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 709 GetRequests, 521 SyntacticMatches, 2 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 474 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 11 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 9 NumberOfFragments, 26 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 3 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 933 NumberOfCodeBlocks, 928 NumberOfCodeBlocksAsserted, 47 NumberOfCheckSat, 912 ConstructedInterpolants, 0 QuantifiedInterpolants, 151872 SizeOfPredicates, 88 NumberOfNonLiveVariables, 1330 ConjunctsInSsa, 261 ConjunctsInUnsatCore, 21 InterpolantComputations, 2 PerfectInterpolantSequences, 1346/2420 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...