./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/test25_true-unreach-call.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_627858e1-472a-406f-b7c3-e06c197620f6/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_627858e1-472a-406f-b7c3-e06c197620f6/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_627858e1-472a-406f-b7c3-e06c197620f6/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_627858e1-472a-406f-b7c3-e06c197620f6/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-regression/test25_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_627858e1-472a-406f-b7c3-e06c197620f6/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_627858e1-472a-406f-b7c3-e06c197620f6/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 5d33db1882917813547794c8974f871f0a78640e ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 02:27:27,541 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 02:27:27,542 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 02:27:27,549 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 02:27:27,550 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 02:27:27,550 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 02:27:27,551 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 02:27:27,553 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 02:27:27,554 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 02:27:27,555 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 02:27:27,556 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 02:27:27,556 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 02:27:27,557 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 02:27:27,557 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 02:27:27,558 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 02:27:27,559 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 02:27:27,560 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 02:27:27,561 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 02:27:27,563 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 02:27:27,564 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 02:27:27,565 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 02:27:27,567 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 02:27:27,569 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 02:27:27,569 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 02:27:27,569 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 02:27:27,570 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 02:27:27,571 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 02:27:27,572 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 02:27:27,572 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 02:27:27,573 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 02:27:27,574 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 02:27:27,574 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 02:27:27,575 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 02:27:27,575 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 02:27:27,576 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 02:27:27,576 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 02:27:27,576 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_627858e1-472a-406f-b7c3-e06c197620f6/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-23 02:27:27,585 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 02:27:27,585 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 02:27:27,586 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 02:27:27,586 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 02:27:27,587 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-23 02:27:27,587 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-23 02:27:27,587 INFO L133 SettingsManager]: * Use SBE=true [2018-11-23 02:27:27,587 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 02:27:27,588 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-23 02:27:27,588 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 02:27:27,588 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-23 02:27:27,588 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 02:27:27,588 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 02:27:27,588 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 02:27:27,589 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 02:27:27,589 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-23 02:27:27,589 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 02:27:27,589 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 02:27:27,589 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 02:27:27,589 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 02:27:27,590 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 02:27:27,590 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 02:27:27,590 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 02:27:27,590 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 02:27:27,590 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 02:27:27,590 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 02:27:27,591 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 02:27:27,591 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-23 02:27:27,591 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 02:27:27,591 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-23 02:27:27,591 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_627858e1-472a-406f-b7c3-e06c197620f6/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 -> 5d33db1882917813547794c8974f871f0a78640e [2018-11-23 02:27:27,620 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 02:27:27,631 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 02:27:27,634 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 02:27:27,635 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 02:27:27,636 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 02:27:27,636 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_627858e1-472a-406f-b7c3-e06c197620f6/bin-2019/uautomizer/../../sv-benchmarks/c/ldv-regression/test25_true-unreach-call.c [2018-11-23 02:27:27,691 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_627858e1-472a-406f-b7c3-e06c197620f6/bin-2019/uautomizer/data/a90fac9da/91cb6bfdf9e54137a003d29f2a6f0f64/FLAG4c5485555 [2018-11-23 02:27:28,058 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 02:27:28,059 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_627858e1-472a-406f-b7c3-e06c197620f6/sv-benchmarks/c/ldv-regression/test25_true-unreach-call.c [2018-11-23 02:27:28,066 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_627858e1-472a-406f-b7c3-e06c197620f6/bin-2019/uautomizer/data/a90fac9da/91cb6bfdf9e54137a003d29f2a6f0f64/FLAG4c5485555 [2018-11-23 02:27:28,082 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_627858e1-472a-406f-b7c3-e06c197620f6/bin-2019/uautomizer/data/a90fac9da/91cb6bfdf9e54137a003d29f2a6f0f64 [2018-11-23 02:27:28,085 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 02:27:28,087 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 02:27:28,088 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 02:27:28,088 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 02:27:28,092 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 02:27:28,093 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:27:28" (1/1) ... [2018-11-23 02:27:28,096 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@242fcc11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:27:28, skipping insertion in model container [2018-11-23 02:27:28,096 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:27:28" (1/1) ... [2018-11-23 02:27:28,107 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 02:27:28,129 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 02:27:28,282 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 02:27:28,289 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 02:27:28,306 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 02:27:28,320 INFO L195 MainTranslator]: Completed translation [2018-11-23 02:27:28,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:27:28 WrapperNode [2018-11-23 02:27:28,321 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 02:27:28,321 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 02:27:28,321 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 02:27:28,321 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 02:27:28,328 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:27:28" (1/1) ... [2018-11-23 02:27:28,336 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:27:28" (1/1) ... [2018-11-23 02:27:28,344 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 02:27:28,344 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 02:27:28,344 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 02:27:28,344 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 02:27:28,396 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:27:28" (1/1) ... [2018-11-23 02:27:28,396 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:27:28" (1/1) ... [2018-11-23 02:27:28,398 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:27:28" (1/1) ... [2018-11-23 02:27:28,399 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:27:28" (1/1) ... [2018-11-23 02:27:28,407 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:27:28" (1/1) ... [2018-11-23 02:27:28,411 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:27:28" (1/1) ... [2018-11-23 02:27:28,412 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:27:28" (1/1) ... [2018-11-23 02:27:28,413 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 02:27:28,413 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 02:27:28,413 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 02:27:28,414 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 02:27:28,414 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:27:28" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_627858e1-472a-406f-b7c3-e06c197620f6/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 02:27:28,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-23 02:27:28,455 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-23 02:27:28,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-23 02:27:28,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-23 02:27:28,455 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-23 02:27:28,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 02:27:28,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 02:27:28,456 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-23 02:27:28,456 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-23 02:27:28,456 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-23 02:27:28,456 INFO L130 BoogieDeclarations]: Found specification of procedure check [2018-11-23 02:27:28,456 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2018-11-23 02:27:28,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-23 02:27:28,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-23 02:27:28,628 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 02:27:28,628 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-11-23 02:27:28,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:27:28 BoogieIcfgContainer [2018-11-23 02:27:28,628 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 02:27:28,629 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-23 02:27:28,629 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-23 02:27:28,632 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-23 02:27:28,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:27:28" (1/3) ... [2018-11-23 02:27:28,633 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@969b3f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:27:28, skipping insertion in model container [2018-11-23 02:27:28,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:27:28" (2/3) ... [2018-11-23 02:27:28,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@969b3f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:27:28, skipping insertion in model container [2018-11-23 02:27:28,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:27:28" (3/3) ... [2018-11-23 02:27:28,636 INFO L112 eAbstractionObserver]: Analyzing ICFG test25_true-unreach-call.c [2018-11-23 02:27:28,647 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-23 02:27:28,655 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-23 02:27:28,668 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-23 02:27:28,690 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-23 02:27:28,691 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-23 02:27:28,691 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-23 02:27:28,691 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-23 02:27:28,691 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 02:27:28,692 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 02:27:28,692 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-23 02:27:28,692 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 02:27:28,692 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-23 02:27:28,705 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2018-11-23 02:27:28,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-23 02:27:28,710 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:27:28,711 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 02:27:28,713 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 02:27:28,717 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:27:28,718 INFO L82 PathProgramCache]: Analyzing trace with hash -899836778, now seen corresponding path program 1 times [2018-11-23 02:27:28,719 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:27:28,720 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:27:28,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:27:28,766 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:27:28,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:27:28,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:27:28,841 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 02:27:28,843 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 02:27:28,843 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-23 02:27:28,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-23 02:27:28,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-23 02:27:28,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-23 02:27:28,858 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2018-11-23 02:27:28,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:27:28,873 INFO L93 Difference]: Finished difference Result 42 states and 52 transitions. [2018-11-23 02:27:28,873 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-23 02:27:28,874 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2018-11-23 02:27:28,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:27:28,881 INFO L225 Difference]: With dead ends: 42 [2018-11-23 02:27:28,881 INFO L226 Difference]: Without dead ends: 20 [2018-11-23 02:27:28,884 INFO L631 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 [2018-11-23 02:27:28,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-11-23 02:27:28,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-11-23 02:27:28,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-11-23 02:27:28,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2018-11-23 02:27:28,912 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 17 [2018-11-23 02:27:28,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:27:28,913 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2018-11-23 02:27:28,913 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-23 02:27:28,913 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2018-11-23 02:27:28,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-23 02:27:28,913 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:27:28,914 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 02:27:28,914 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 02:27:28,914 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:27:28,914 INFO L82 PathProgramCache]: Analyzing trace with hash -1137678901, now seen corresponding path program 1 times [2018-11-23 02:27:28,914 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:27:28,915 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:27:28,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:27:28,916 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:27:28,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:27:28,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:27:28,970 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 02:27:28,971 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 02:27:28,971 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 02:27:28,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 02:27:28,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 02:27:28,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 02:27:28,974 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 3 states. [2018-11-23 02:27:28,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:27:28,995 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2018-11-23 02:27:28,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 02:27:28,996 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2018-11-23 02:27:28,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:27:28,997 INFO L225 Difference]: With dead ends: 34 [2018-11-23 02:27:28,997 INFO L226 Difference]: Without dead ends: 22 [2018-11-23 02:27:28,998 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 02:27:28,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-11-23 02:27:29,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2018-11-23 02:27:29,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-11-23 02:27:29,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2018-11-23 02:27:29,002 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 18 [2018-11-23 02:27:29,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:27:29,002 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2018-11-23 02:27:29,002 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 02:27:29,002 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2018-11-23 02:27:29,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-23 02:27:29,003 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:27:29,003 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 02:27:29,003 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 02:27:29,003 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:27:29,003 INFO L82 PathProgramCache]: Analyzing trace with hash 278779309, now seen corresponding path program 1 times [2018-11-23 02:27:29,003 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:27:29,004 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:27:29,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:27:29,004 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:27:29,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:27:29,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:27:29,069 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:27:29,070 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 02:27:29,070 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_627858e1-472a-406f-b7c3-e06c197620f6/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 02:27:29,078 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:27:29,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:27:29,119 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:27:29,145 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:27:29,165 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 02:27:29,165 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-11-23 02:27:29,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 02:27:29,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 02:27:29,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-23 02:27:29,166 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 5 states. [2018-11-23 02:27:29,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:27:29,194 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2018-11-23 02:27:29,194 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-23 02:27:29,194 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2018-11-23 02:27:29,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:27:29,196 INFO L225 Difference]: With dead ends: 36 [2018-11-23 02:27:29,196 INFO L226 Difference]: Without dead ends: 24 [2018-11-23 02:27:29,196 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-23 02:27:29,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-11-23 02:27:29,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2018-11-23 02:27:29,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-11-23 02:27:29,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2018-11-23 02:27:29,200 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 20 [2018-11-23 02:27:29,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:27:29,200 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2018-11-23 02:27:29,201 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 02:27:29,201 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2018-11-23 02:27:29,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-23 02:27:29,201 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:27:29,201 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 02:27:29,202 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 02:27:29,202 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:27:29,202 INFO L82 PathProgramCache]: Analyzing trace with hash -9513713, now seen corresponding path program 2 times [2018-11-23 02:27:29,202 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:27:29,202 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:27:29,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:27:29,203 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:27:29,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:27:29,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:27:29,274 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:27:29,274 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 02:27:29,274 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_627858e1-472a-406f-b7c3-e06c197620f6/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 02:27:29,291 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-23 02:27:29,321 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-11-23 02:27:29,321 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 02:27:29,324 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:27:29,385 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2018-11-23 02:27:29,388 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2018-11-23 02:27:29,389 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-23 02:27:29,391 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 02:27:29,394 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-23 02:27:29,395 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:17, output treesize:5 [2018-11-23 02:27:29,413 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-23 02:27:29,431 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-23 02:27:29,431 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2018-11-23 02:27:29,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-23 02:27:29,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-23 02:27:29,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-11-23 02:27:29,432 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 8 states. [2018-11-23 02:27:29,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:27:29,524 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2018-11-23 02:27:29,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-23 02:27:29,527 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2018-11-23 02:27:29,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:27:29,527 INFO L225 Difference]: With dead ends: 40 [2018-11-23 02:27:29,527 INFO L226 Difference]: Without dead ends: 28 [2018-11-23 02:27:29,528 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2018-11-23 02:27:29,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-11-23 02:27:29,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2018-11-23 02:27:29,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-11-23 02:27:29,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2018-11-23 02:27:29,533 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 22 [2018-11-23 02:27:29,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:27:29,533 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2018-11-23 02:27:29,533 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-23 02:27:29,533 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2018-11-23 02:27:29,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-23 02:27:29,534 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:27:29,534 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 02:27:29,535 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 02:27:29,535 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:27:29,535 INFO L82 PathProgramCache]: Analyzing trace with hash -50594516, now seen corresponding path program 1 times [2018-11-23 02:27:29,535 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:27:29,535 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:27:29,536 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:27:29,536 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 02:27:29,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:27:29,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:27:29,616 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-23 02:27:29,616 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 02:27:29,616 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_627858e1-472a-406f-b7c3-e06c197620f6/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 02:27:29,627 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:27:29,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:27:29,654 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:27:29,682 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-23 02:27:29,700 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 02:27:29,700 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2018-11-23 02:27:29,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-23 02:27:29,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-23 02:27:29,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-11-23 02:27:29,701 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 7 states. [2018-11-23 02:27:29,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:27:29,725 INFO L93 Difference]: Finished difference Result 44 states and 46 transitions. [2018-11-23 02:27:29,725 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-23 02:27:29,725 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2018-11-23 02:27:29,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:27:29,726 INFO L225 Difference]: With dead ends: 44 [2018-11-23 02:27:29,726 INFO L226 Difference]: Without dead ends: 30 [2018-11-23 02:27:29,726 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-11-23 02:27:29,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-11-23 02:27:29,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2018-11-23 02:27:29,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-11-23 02:27:29,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2018-11-23 02:27:29,729 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 26 [2018-11-23 02:27:29,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:27:29,730 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2018-11-23 02:27:29,730 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-23 02:27:29,730 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2018-11-23 02:27:29,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-11-23 02:27:29,730 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:27:29,730 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 02:27:29,731 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 02:27:29,731 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:27:29,731 INFO L82 PathProgramCache]: Analyzing trace with hash 619997966, now seen corresponding path program 2 times [2018-11-23 02:27:29,731 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:27:29,731 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:27:29,732 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:27:29,732 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:27:29,732 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:27:29,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:27:29,802 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-23 02:27:29,803 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 02:27:29,803 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_627858e1-472a-406f-b7c3-e06c197620f6/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 02:27:29,818 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-23 02:27:29,854 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-23 02:27:29,855 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 02:27:29,857 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:27:29,870 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-23 02:27:29,900 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 02:27:29,900 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2018-11-23 02:27:29,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-23 02:27:29,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-23 02:27:29,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-11-23 02:27:29,902 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 8 states. [2018-11-23 02:27:29,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:27:29,984 INFO L93 Difference]: Finished difference Result 46 states and 48 transitions. [2018-11-23 02:27:29,984 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-23 02:27:29,984 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2018-11-23 02:27:29,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:27:29,985 INFO L225 Difference]: With dead ends: 46 [2018-11-23 02:27:29,985 INFO L226 Difference]: Without dead ends: 32 [2018-11-23 02:27:29,986 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-11-23 02:27:29,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-11-23 02:27:29,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2018-11-23 02:27:29,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-11-23 02:27:29,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2018-11-23 02:27:29,990 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 28 [2018-11-23 02:27:29,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:27:29,991 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2018-11-23 02:27:29,991 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-23 02:27:29,991 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2018-11-23 02:27:29,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-23 02:27:29,992 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:27:29,992 INFO L402 BasicCegarLoop]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 02:27:29,992 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 02:27:29,992 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:27:29,992 INFO L82 PathProgramCache]: Analyzing trace with hash 814278768, now seen corresponding path program 3 times [2018-11-23 02:27:29,992 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:27:29,993 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:27:29,994 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:27:29,994 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 02:27:29,994 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:27:30,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:27:30,111 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-23 02:27:30,111 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 02:27:30,112 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_627858e1-472a-406f-b7c3-e06c197620f6/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 02:27:30,125 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-23 02:27:30,157 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2018-11-23 02:27:30,158 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 02:27:30,161 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:27:30,210 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2018-11-23 02:27:30,220 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2018-11-23 02:27:30,221 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-23 02:27:30,224 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 02:27:30,237 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-23 02:27:30,238 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:17, output treesize:5 [2018-11-23 02:27:30,252 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2018-11-23 02:27:30,283 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 02:27:30,283 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 12 [2018-11-23 02:27:30,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-23 02:27:30,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-23 02:27:30,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2018-11-23 02:27:30,284 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 12 states. [2018-11-23 02:27:30,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:27:30,394 INFO L93 Difference]: Finished difference Result 50 states and 53 transitions. [2018-11-23 02:27:30,395 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-23 02:27:30,395 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 30 [2018-11-23 02:27:30,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:27:30,396 INFO L225 Difference]: With dead ends: 50 [2018-11-23 02:27:30,396 INFO L226 Difference]: Without dead ends: 36 [2018-11-23 02:27:30,396 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2018-11-23 02:27:30,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-23 02:27:30,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2018-11-23 02:27:30,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-11-23 02:27:30,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2018-11-23 02:27:30,401 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 30 [2018-11-23 02:27:30,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:27:30,402 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2018-11-23 02:27:30,402 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-23 02:27:30,403 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2018-11-23 02:27:30,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-11-23 02:27:30,404 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:27:30,404 INFO L402 BasicCegarLoop]: trace histogram [6, 6, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 02:27:30,404 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 02:27:30,404 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:27:30,405 INFO L82 PathProgramCache]: Analyzing trace with hash 1119042125, now seen corresponding path program 4 times [2018-11-23 02:27:30,405 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:27:30,405 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:27:30,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:27:30,406 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 02:27:30,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:27:30,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:27:30,490 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-23 02:27:30,491 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 02:27:30,491 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_627858e1-472a-406f-b7c3-e06c197620f6/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 02:27:30,500 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-23 02:27:30,520 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-23 02:27:30,520 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 02:27:30,522 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:27:30,569 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2018-11-23 02:27:30,572 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2018-11-23 02:27:30,572 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-23 02:27:30,574 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 02:27:30,576 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-23 02:27:30,576 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:17, output treesize:5 [2018-11-23 02:27:30,587 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2018-11-23 02:27:30,606 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 02:27:30,606 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 14 [2018-11-23 02:27:30,606 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-23 02:27:30,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-23 02:27:30,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2018-11-23 02:27:30,607 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 14 states. [2018-11-23 02:27:30,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:27:30,713 INFO L93 Difference]: Finished difference Result 56 states and 59 transitions. [2018-11-23 02:27:30,713 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-23 02:27:30,713 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 34 [2018-11-23 02:27:30,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:27:30,714 INFO L225 Difference]: With dead ends: 56 [2018-11-23 02:27:30,714 INFO L226 Difference]: Without dead ends: 40 [2018-11-23 02:27:30,715 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2018-11-23 02:27:30,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-11-23 02:27:30,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2018-11-23 02:27:30,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-11-23 02:27:30,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2018-11-23 02:27:30,719 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 34 [2018-11-23 02:27:30,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:27:30,720 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2018-11-23 02:27:30,720 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-23 02:27:30,720 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2018-11-23 02:27:30,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-11-23 02:27:30,720 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:27:30,720 INFO L402 BasicCegarLoop]: trace histogram [7, 7, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 02:27:30,721 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 02:27:30,722 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:27:30,722 INFO L82 PathProgramCache]: Analyzing trace with hash -820541462, now seen corresponding path program 5 times [2018-11-23 02:27:30,722 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:27:30,722 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:27:30,723 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:27:30,723 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 02:27:30,723 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:27:30,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:27:30,822 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-11-23 02:27:30,822 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 02:27:30,822 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_627858e1-472a-406f-b7c3-e06c197620f6/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 02:27:30,839 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-23 02:27:34,619 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2018-11-23 02:27:34,620 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 02:27:34,625 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:27:34,635 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-11-23 02:27:34,657 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 02:27:34,658 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2018-11-23 02:27:34,658 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-23 02:27:34,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-23 02:27:34,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-11-23 02:27:34,658 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand 11 states. [2018-11-23 02:27:34,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:27:34,692 INFO L93 Difference]: Finished difference Result 60 states and 62 transitions. [2018-11-23 02:27:34,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-23 02:27:34,692 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 38 [2018-11-23 02:27:34,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:27:34,693 INFO L225 Difference]: With dead ends: 60 [2018-11-23 02:27:34,693 INFO L226 Difference]: Without dead ends: 42 [2018-11-23 02:27:34,693 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-11-23 02:27:34,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-11-23 02:27:34,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2018-11-23 02:27:34,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-11-23 02:27:34,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2018-11-23 02:27:34,697 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 38 [2018-11-23 02:27:34,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:27:34,697 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2018-11-23 02:27:34,698 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-23 02:27:34,698 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2018-11-23 02:27:34,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-11-23 02:27:34,698 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:27:34,698 INFO L402 BasicCegarLoop]: trace histogram [8, 8, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 02:27:34,699 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 02:27:34,699 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:27:34,699 INFO L82 PathProgramCache]: Analyzing trace with hash 478163660, now seen corresponding path program 6 times [2018-11-23 02:27:34,699 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:27:34,699 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:27:34,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:27:34,700 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 02:27:34,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:27:34,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:27:34,816 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-11-23 02:27:34,817 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 02:27:34,817 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_627858e1-472a-406f-b7c3-e06c197620f6/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 02:27:34,833 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-23 02:27:34,896 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2018-11-23 02:27:34,896 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 02:27:34,899 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:27:34,911 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2018-11-23 02:27:34,911 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-23 02:27:34,914 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 02:27:34,914 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:8 [2018-11-23 02:27:34,929 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-11-23 02:27:34,932 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-11-23 02:27:34,932 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-23 02:27:34,934 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 02:27:34,947 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 12 [2018-11-23 02:27:34,950 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2018-11-23 02:27:34,950 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-23 02:27:34,953 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 02:27:34,965 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-23 02:27:34,965 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 5 variables, input treesize:50, output treesize:28 [2018-11-23 02:27:37,092 WARN L854 $PredicateComparison]: unable to prove that (exists ((|v_main_~#cont~0.base_BEFORE_CALL_1| Int)) (not (= (select (select |c_#memory_$Pointer$.base| |v_main_~#cont~0.base_BEFORE_CALL_1|) 0) |v_main_~#cont~0.base_BEFORE_CALL_1|))) is different from true [2018-11-23 02:27:43,152 WARN L180 SmtUtils]: Spent 6.02 s on a formula simplification that was a NOOP. DAG size: 30 [2018-11-23 02:27:43,213 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2018-11-23 02:27:43,237 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 02:27:43,237 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2018-11-23 02:27:43,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-23 02:27:43,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-23 02:27:43,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=270, Unknown=1, NotChecked=34, Total=380 [2018-11-23 02:27:43,238 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand 20 states. [2018-11-23 02:27:43,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:27:43,672 INFO L93 Difference]: Finished difference Result 60 states and 63 transitions. [2018-11-23 02:27:43,673 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-11-23 02:27:43,673 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 40 [2018-11-23 02:27:43,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:27:43,674 INFO L225 Difference]: With dead ends: 60 [2018-11-23 02:27:43,674 INFO L226 Difference]: Without dead ends: 0 [2018-11-23 02:27:43,675 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=227, Invalid=898, Unknown=1, NotChecked=64, Total=1190 [2018-11-23 02:27:43,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-23 02:27:43,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-23 02:27:43,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-23 02:27:43,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-23 02:27:43,675 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 40 [2018-11-23 02:27:43,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:27:43,676 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 02:27:43,676 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-23 02:27:43,676 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-23 02:27:43,676 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-23 02:27:43,680 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-23 02:27:43,746 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-23 02:27:43,747 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-23 02:27:43,747 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-23 02:27:43,747 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-23 02:27:43,747 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-23 02:27:43,747 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-23 02:27:43,747 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-23 02:27:43,747 INFO L444 ceAbstractionStarter]: At program point L37-4(lines 37 39) the Hoare annotation is: (let ((.cse0 (select (select |#memory_$Pointer$.base| |main_~#cont~0.base|) |main_~#cont~0.offset|)) (.cse1 (+ (select (select |#memory_$Pointer$.offset| |main_~#cont~0.base|) |main_~#cont~0.offset|) 4))) (let ((.cse2 (select (select |#memory_int| .cse0) .cse1))) (and (= main_~pa~0.base .cse0) (= |main_~#cont~0.offset| 0) (= main_~pa~0.offset .cse1) (<= main_~i~0 .cse2) (not (= .cse0 |main_~#cont~0.base|)) (<= .cse2 main_~i~0) (not (= |main_~#array~0.base| |main_~#cont~0.base|))))) [2018-11-23 02:27:43,748 INFO L448 ceAbstractionStarter]: For program point L27-2(lines 27 30) no Hoare annotation was computed. [2018-11-23 02:27:43,748 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 20 50) no Hoare annotation was computed. [2018-11-23 02:27:43,748 INFO L444 ceAbstractionStarter]: At program point L27-3(lines 27 30) the Hoare annotation is: (and (= |main_~#cont~0.offset| 0) (not (= |main_~#array~0.base| |main_~#cont~0.base|))) [2018-11-23 02:27:43,748 INFO L448 ceAbstractionStarter]: For program point L27-4(lines 21 50) no Hoare annotation was computed. [2018-11-23 02:27:43,748 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 48) no Hoare annotation was computed. [2018-11-23 02:27:43,748 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 20 50) no Hoare annotation was computed. [2018-11-23 02:27:43,748 INFO L448 ceAbstractionStarter]: For program point L40(line 40) no Hoare annotation was computed. [2018-11-23 02:27:43,748 INFO L448 ceAbstractionStarter]: For program point L40-1(lines 40 42) no Hoare annotation was computed. [2018-11-23 02:27:43,748 INFO L448 ceAbstractionStarter]: For program point L32(lines 32 44) no Hoare annotation was computed. [2018-11-23 02:27:43,748 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 20 50) the Hoare annotation is: true [2018-11-23 02:27:43,748 INFO L444 ceAbstractionStarter]: At program point L41(lines 21 50) the Hoare annotation is: false [2018-11-23 02:27:43,749 INFO L448 ceAbstractionStarter]: For program point L37-1(lines 37 39) no Hoare annotation was computed. [2018-11-23 02:27:43,749 INFO L448 ceAbstractionStarter]: For program point L35(lines 35 43) no Hoare annotation was computed. [2018-11-23 02:27:43,749 INFO L444 ceAbstractionStarter]: At program point L37-3(lines 37 39) the Hoare annotation is: (let ((.cse0 (select (select |#memory_$Pointer$.base| |main_~#cont~0.base|) |main_~#cont~0.offset|))) (and (= main_~pa~0.base .cse0) (= |main_~#cont~0.offset| 0) (<= main_~i~0 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset)) (= main_~pa~0.offset (+ (select (select |#memory_$Pointer$.offset| |main_~#cont~0.base|) |main_~#cont~0.offset|) 4)) (not (= .cse0 |main_~#cont~0.base|)) (not (= |main_~#array~0.base| |main_~#cont~0.base|)))) [2018-11-23 02:27:43,749 INFO L451 ceAbstractionStarter]: At program point checkENTRY(lines 15 18) the Hoare annotation is: true [2018-11-23 02:27:43,749 INFO L448 ceAbstractionStarter]: For program point checkFINAL(lines 15 18) no Hoare annotation was computed. [2018-11-23 02:27:43,749 INFO L448 ceAbstractionStarter]: For program point checkEXIT(lines 15 18) no Hoare annotation was computed. [2018-11-23 02:27:43,756 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2018-11-23 02:27:43,757 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2018-11-23 02:27:43,758 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2018-11-23 02:27:43,759 WARN L1272 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2018-11-23 02:27:43,760 WARN L1272 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-23 02:27:43,760 WARN L1272 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2018-11-23 02:27:43,760 WARN L1272 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2018-11-23 02:27:43,762 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2018-11-23 02:27:43,762 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2018-11-23 02:27:43,762 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2018-11-23 02:27:43,763 WARN L1272 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2018-11-23 02:27:43,763 WARN L1272 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-23 02:27:43,763 WARN L1272 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2018-11-23 02:27:43,763 WARN L1272 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2018-11-23 02:27:43,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:27:43 BoogieIcfgContainer [2018-11-23 02:27:43,766 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-23 02:27:43,766 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 02:27:43,766 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 02:27:43,766 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 02:27:43,767 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:27:28" (3/4) ... [2018-11-23 02:27:43,770 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-23 02:27:43,776 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-23 02:27:43,777 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-23 02:27:43,777 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure check [2018-11-23 02:27:43,780 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2018-11-23 02:27:43,781 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2018-11-23 02:27:43,781 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-23 02:27:43,821 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_627858e1-472a-406f-b7c3-e06c197620f6/bin-2019/uautomizer/witness.graphml [2018-11-23 02:27:43,822 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 02:27:43,822 INFO L168 Benchmark]: Toolchain (without parser) took 15736.56 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.6 MB). Free memory was 959.2 MB in the beginning and 921.4 MB in the end (delta: 37.9 MB). Peak memory consumption was 170.5 MB. Max. memory is 11.5 GB. [2018-11-23 02:27:43,823 INFO L168 Benchmark]: CDTParser took 0.18 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 02:27:43,823 INFO L168 Benchmark]: CACSL2BoogieTranslator took 233.07 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 945.8 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. [2018-11-23 02:27:43,824 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.74 ms. Allocated memory is still 1.0 GB. Free memory is still 945.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 02:27:43,824 INFO L168 Benchmark]: Boogie Preprocessor took 69.12 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.6 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -184.2 MB). Peak memory consumption was 14.6 MB. Max. memory is 11.5 GB. [2018-11-23 02:27:43,825 INFO L168 Benchmark]: RCFGBuilder took 214.96 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. [2018-11-23 02:27:43,825 INFO L168 Benchmark]: TraceAbstraction took 15136.77 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 924.7 MB in the end (delta: 188.3 MB). Peak memory consumption was 188.3 MB. Max. memory is 11.5 GB. [2018-11-23 02:27:43,825 INFO L168 Benchmark]: Witness Printer took 55.56 ms. Allocated memory is still 1.2 GB. Free memory was 924.7 MB in the beginning and 921.4 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2018-11-23 02:27:43,828 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 233.07 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 945.8 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 22.74 ms. Allocated memory is still 1.0 GB. Free memory is still 945.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 69.12 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.6 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -184.2 MB). Peak memory consumption was 14.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 214.96 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 15136.77 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 924.7 MB in the end (delta: 188.3 MB). Peak memory consumption was 188.3 MB. Max. memory is 11.5 GB. * Witness Printer took 55.56 ms. Allocated memory is still 1.2 GB. Free memory was 924.7 MB in the beginning and 921.4 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 48]: 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: 37]: Loop Invariant [2018-11-23 02:27:43,832 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2018-11-23 02:27:43,832 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2018-11-23 02:27:43,832 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2018-11-23 02:27:43,833 WARN L1272 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2018-11-23 02:27:43,833 WARN L1272 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-23 02:27:43,833 WARN L1272 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2018-11-23 02:27:43,833 WARN L1272 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2018-11-23 02:27:43,834 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2018-11-23 02:27:43,834 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2018-11-23 02:27:43,834 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2018-11-23 02:27:43,835 WARN L1272 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2018-11-23 02:27:43,835 WARN L1272 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-23 02:27:43,835 WARN L1272 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2018-11-23 02:27:43,835 WARN L1272 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ Derived loop invariant: ((((pa == #memory_$Pointer$[cont][cont] && cont == 0) && i <= unknown-#memory_int-unknown[pa][pa]) && pa == #memory_$Pointer$[cont][cont] + 4) && !(#memory_$Pointer$[cont][cont] == cont)) && !(array == cont) - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: cont == 0 && !(array == cont) - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 25 locations, 1 error locations. SAFE Result, 15.0s OverallTime, 10 OverallIterations, 8 TraceHistogramMax, 0.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 180 SDtfs, 58 SDslu, 638 SDs, 0 SdLazy, 376 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 316 GetRequests, 224 SyntacticMatches, 1 SemanticMatches, 91 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 9.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=9, 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, 10 MinimizatonAttempts, 8 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 19 PreInvPairs, 33 NumberOfFragments, 119 HoareAnnotationTreeSize, 19 FomulaSimplifications, 196 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 59 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 4.1s SatisfiabilityAnalysisTime, 9.2s InterpolantComputationTime, 511 NumberOfCodeBlocks, 481 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 493 ConstructedInterpolants, 3 QuantifiedInterpolants, 47732 SizeOfPredicates, 54 NumberOfNonLiveVariables, 1042 ConjunctsInSsa, 98 ConjunctsInUnsatCore, 18 InterpolantComputations, 3 PerfectInterpolantSequences, 190/480 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...